BrainMap

Mr. George Stan

PhD Materials Engineering

Senior Researcher rank I - INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Researcher | Scientific reviewer

Web of Science ResearcherID: https://www.webofscience.com/wos/author/record/B-5690-2011

Curriculum Vitae (08/03/2024)

Expertise & keywords

Optoelectric microfluidic system for tumor cells characterization and separation according to their malignancy grade Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2021-0451 2022 - 2024

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE "CAROL DAVILA" (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation:

Project website: https://cetal.inflpr.ro/newsite/ped_596

Abstract:

In the present project we shall fabricate and validate a microfluidic device based on dielectrophoresis and optical tweezers capable to characterize and separate cancer cells according to their malignancy potency. Specifically, using a novel fabrication approach, we will develop a compact glass based optoelectric biochip for efficient cell trapping followed by microfluidic separation. The device will provide a complete label-free method of cell separation and consists in creating a double trap due to gradients of electric field amplitude and laser light intensity. The sorted cells can be further used for downstream applications (such as, precision medicine diagnostic by providing specific cell subsets or obtaining specific cell cultures for selection of chemotherapy drugs). The device has the perspective to be integrated into an automated theranostic technology or system to evaluate specific cancer cells types and to sort them in designated groups.

Towards perovskite large area photovoltaics Call name: EEA Grants - Proiecte Colaborative de Cercetare
EEA-RO-NO-2018-0106 2021 - 2024

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); University of Oslo (NO); Reykjavík University (IS); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH (RO); TRITECH GROUP SRL (RO)

Affiliation:

Project website: http://perla-pv.ro/

Abstract:

The perovskite solar cells (PSC) have attracted a considerable interest in photovoltaics community, showing a very fast development in terms of power conversion efficiency (PCE), reaching now values over 25% certified PCE in not stabilized small area samples, proving that they can become real competitors to commonly used solar-cell materials (e.g based on Si). Not only the remarkably large PCE is an important asset, but also the low production costs makes the PSCs very attractive for the solar cell technology, as solution processing techniques are typically employed. In addition, they can be hosted by a long range of flexible substrates, pushing further the record for power per weight and implicitly their utility. However, while the high PCE values and the low production costs are important advantages for PSC, the real challenges to overcome prior of industrial production are their stability in time, reliability and reproducibility of the performance as well as environmental issues raised by the use of toxic elements/solvents. These are well known problems for the small area standard and inverted PSCs, produced by spin-coating in research laboratories and inherently remain the same when envisaged is the fabrication of large area devices. The project addresses these issues starting from the premise that coherent experimental and theoretical studies should be done using from the start cheap deposition techniques applicable on large areas (printing and sputtering). Beside allowing the scaling up, such techniques can be better controlled offering a better homogeneity in deposition than the spin-coating method. The present project includes fundamental and applicative research aiming to achieve both scientific and practical goals. The overall aims/objectives of the project are: A) to develop efficient, stable, reproducible standard and inverted perovskite solar cells and photovoltaic modules fabricated with affordable large area and environmental friendly technologies. It is expected that by developing low cost and stable photovoltaic panels with optimized efficiency the use of such devices in public and private buildings will be boosted, contributing thus to increasing the share of renewable energy in energy balance in Romania and Donor States; B) to strengthen the knowledge base concerning the application of environmental technology; new knowledge will be acquired regarding how PSCs can be optimized for large scale applications and how can they be fabricated using environmentally friendly technologies with low carbon footprint. Specific objectives to be achieved during the project are: O1 - understand the physical working principles of perovskite solar cells and find solutions to increase and stabilize the PCE while enlarging the area of the cells; O2 – reduce the amount of costly materials and toxic solvents used in the fabrication process of both standard and inverted PSC structures with other inexpensive and environmental friendly; O3 - stabilize the PCE performance of PSC via compositional engineering and proper replacements including the selective contacts; O4 - enhance the charge collection efficiency by optimizing interfaces between the layers in the cell; O5 - develop cheap large area fabrication technologies (printing and sputtering) for all the component layers in PSCs, standard and inverted structures; O6 - obtain efficient large area encapsulated PSCs and photovoltaic modules with PCE over 15%. The starting TRL is 3 and the envisaged TRL is 6, meaning that fully operational photovoltaic modules will be manufactured and tested in relevant industrial environment with the help of the SME partner.

The consortium is composed by 5 partners: National Institute of Materials Physics (NIMP), Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), and Tritech Group (WATTROM), a SME as end-user, all from Romania; Oslo University (UiO) from Norway, and Reykjavik University (RU) from Iceland.

3D direct ink writing (robocasting) of bioceramic porous scaffolds: towards a new generation of bone graft substitutes Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2019-0463 2021 - 2022

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: https://infim.ro/en/project/robonegraft/

Abstract:

Bone transplantation demand stems from tissue deficiency or a substantial skeletal loss, and has multiple causes: age, severe trauma, chronical bone disorders/infections, tumor resections, congenital bone defects. Bone grafting evolved in the last decade into a distinct biomedical segment, which will continuously expand. Responding to this necessity, the project proposal aims to delineate series of innovative architectural solutions of porous bone graft substitutes (BGSs) to be fabricated by accessible and performant 3D robocasting technologies, from bioactive and/or piezoelectric ceramics. Their functional performance will be assessed to prospect their potential for developing a new generation of BGSs capable to satisfy the mechanical and biological requirements of both trabecular and the more demanding cortical bone regions. New routes for endowing angiogenesis, osteogenesis and antibacterial capabilities to both the bioactive and piezoceramic BGSs, such as to enable their rapid, safe and long-lasting osseointegration, will be explored and implemented. Not least the proposal will tackle another highly important issue: the lack of standard in vitro protocols for uniform cell seeding of porous scaffolds.

Innovative and original fundamental and technological elements are expected to emerge: (a) design of bioactive ceramics with controlled degradability and therapeutic ion release, (b) coupling of mechanical strong piezoelectric ceramics with biofunctional materials and (c) in vitro testing of piezoelectric effect on cells behavior under dynamical mechanical stress conditions. The project will lead to the creation of an independent research team of young scientists with complementary skills, and strive to (i) attract human resources in the national research; (ii) create opportunities of professional formation for young researchers, and (iii) generate premises for the future formation of a larger scientific community with skills and knowledge in materials for medicine.

High quality HZO and AlN films grown by industrially compatible techniques for next generation electronic and sensing devices Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2019-0688 2020 - 2022

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: https://infim.ro/en/project/high-quality-hzo-and-aln-films-grown-by-industrially-compatible-techniques-for-next-generation-electronic-and-sensing-devices/

Abstract:

The project aims to (i) delineate the conditions for the synthesis of high-quality Aluminum Nitride (AlN) and Hafnium – Zirconium Oxide (HZO) layers onto large-area substrates by Chemical Vapor Deposition (CVD) and Atomic Layer Deposition (ALD), and to (ii) integrate them into electronic devices. These two materials (AlN and HZO) have a great potential for high-tech industry, e.g. pyroelectric sensors and next-generation field effect transistors.

Fundamental physics and applicative studies will be harmoniously intertwined for a better understanding of these topical materials characteristics and of their impact on the output parameters of the devices.

The project activities are designed to find the answers to several critical pending issues, such as the pyroelectricity and the origin of ferroelectricity in HZO and of the negative capacitance effect, or the sustainability and limits of AlN-based sensors in harsh environments. Ferroelectric memories, metal-insulator-semiconductor and thin film field effect transistors structures will be fabricated and subsequently analyzed, and the results will be interpolated and discussed with respect to the physico-chemical features of the AlN and HZO thin films.

CVD and ALD techniques are underdeveloped in Romania, even though they have demonstrated tremendous advantages and applicability potential for the development and large-scale production of nano- and micro-electronics. Thereby, the development and successful application of the CVD and ALD techniques, in the framework of this project, for the deposition of high-quality thin films, will represent an important achievement, of high-interest, at both regional and national level.

Controlling the electronic properties in heterostructures based on ferroelectric perovskites: from theory to applications Call name: P 4 - Proiecte Complexe de Cercetare de Frontieră
PN-III-P4-ID-PCCF-2016-0047 2018 - 2022

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://infim.ro/en/project/control-of-electronic-properties-in-ferroelectric-perovskite-heterostructures-from-theory-to-applications/

Abstract:

The main objective of the project is to obtain ferroelectric materials with controlled electronic properties at the same level as this properties are controlled in Si. This will be realized by hetero-valent doping, correlated with stress engineering and band gap engineering without affecting, as much as possible, the ferroelectric properties. The main objective is complex and ambitious because, up to date, there was no experimental demonstration that it possible to obtain n or/and p type conduction in epitaxial ferroelectrics. The successful achievement of this objective will open a new domain, that of ferroelectric electronics or ferrotronics, by producing electronic devices of p-n homo-junction type or junction transistors with ferroelectric materials. Two types of materials are envisaged, namely lead titanate-zirconate (PZT with tetragonal structure and a mixed bismuth ferrite (BFO) with bismuth chromit (BCO). In the first case the heterovalent doping will be studied on Pb or Zr/Ti sites with the aim to obtain n and p type conduction. The final goal is to produce a p-n homo-junction based on epitaxial PZT films. In the second case band gap engineering will be tested by varying the Fe/Cr content, and the dominant conduction mechanism will be identified, the goal being to use the material in photovoltaic applications. The activities will contain: theoretical studies regarding the relation between dopants, electronic properties and the ferroelectricity, including self-doping effects or electrostatic doping; target preparation for deposition of thin films; epitaxial growth of the film; characterization activities of the structure and physical properties. Not only classic doping in the target is envisaged but also doping during the epitaxial growth. The consortium is composed of 4 teams from three different institutions, including a number of 14 young researchers full time equivalent.

Development of doped vanadium oxide/graphene composites for ultra-performance batteries and supercapacitors by physical vapour deposition for sustainable and eco-friendly energy storage applications Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2019-4519 2020 - 2022

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU TEHNOLOGII CRIOGENICE SI IZOTOPICE - I.C.S.I. RAMNICU VALCEA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: https://infim.ro/en/project/development-of-doped-vanadium-oxide-graphene-composites-for-ultra-performance-batteries-and-supercapacitors-by-physical-vapour-deposition-for-sustainable-and-eco-friendly-energy-storage-applications/

Abstract:

Energy storage plays an important role in the modern world. One of the main trends that drive energy storage development is the rise of electrical devices (e.g. smart phones, smart watches, e-books, smart keys), internet of Things (IoT) in our daily life. Despite their great success, lithium ion batteries (LIBs) still need improvements in energy density, fast charge capabilities, cyclic durability and cost. LIBs are not fully safe in certain conditions and the commercial failure of Samsung Galaxy Note 7 in 2016 is an incontestable example. Extensive efforts have been devoted to either improve LiBs by replacing the commercial cathode (e.g. LiCoO2) or by designing new batteries without Lithium (Li) (e.g. Al, Mg, Na, Zn batteries) responding to the concern about the limited Li resource. New devices are required to be more sustainable and greener with respect to our environment. In this context, vanadium oxides, graphene and their related compounds are nowadays the most appealing materials for applications in energy harvesting.

VANABATSUP project intends to synthesize, test and develop advanced batteries or super capacitors based on doped vanadium oxide/graphene composites as sustainable, eco-friendly and ultra-performance storage resources. Despite their good promises, the commercialization of hybrids vanadium oxides-graphene based composites is hampered by various obstacles including fastidious synthesis methods, including the current use of graphene oxide which can lose its efficiency due to a tendency to aggregate. Recently, the project leader has demonstrated not only the possibility to synthesis few layers of graphene by physical vapor deposition (PVD) method, but also shown their applicability as electrochemical devices. A recent review underlined that those graphene layers have not yet been tested for energy storage application. Therefore, VANABATSUP intends to fill this gap and aims to propose alternative cathodes for energy storage application.

NEW METHODS OF DIAGNOSIS AND TREATMENT: CURRENT CHALLENGES AND TECHNOLOGIC SOLUTIONS BASED ON NANOMATERIALS AND BIOMATERIALS Call name: P 1 - SP 1.2 - Proiecte complexe realizate in consorții CDI
PN-III-P1-1.2-PCCDI-2017-0062 2018 - 2021

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE IN DOMENIUL PATOLOGIEI SI STIINTELOR BIOMEDICALE "VICTOR BABES" (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE "CAROL DAVILA" (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE "GRIGORE T. POPA" DIN IAŞI (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE CHIMICO - FARMACEUTICA - I.C.C.F. BUCURESTI (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO); UNIVERSITATEA TRANSILVANIA BRASOV (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://infim.ro/en/project/sanomat/

Abstract:

The project will develop novel conceptual and functional solutions of biomedical devices for treatment, reinforcement/repair/replacement (of human tissues) and diagnosis based on nanostructured and/or biocompatible materials, with high attractivity and certain potential for technology transfer to industry. The experience of the interdisciplinary consortium will allow a passage from concepts of nanomaterials and biomaterials with extended and/or complementary functional features to implementation to new biomedical applications of great interest: (i) antitumoral therapeutic systems (by localized magnetic hyperthermia, photodynamic therapy and drug delivery); (ii) biocompatible compounds with enhanced antimicrobial efficacy; (iii) stent or vein/arterial filters implants based on ferromagnetic shape-memory alloys (with the advantage of repositioning without the need of new invasive interventions); (iv) personalized bone regenerative implants (i.e. porous ceramic scaffolds for bone tissue engineering; dental implants with rapid osseointegration); (v) (bio)sensors for monitoring the bioavailability of pharmaceutical compounds and detecting the reactive oxygen species and their biologic effect; and (vi) correlation of physico-chemical properties with clinical investigations for two types of aerosols (salt particles and essential oils), and their prospective coupling with possible synergistic effects. The synergic development of the institutional capacity of the project partners will be achieved by: creating new jobs and purchasing new equipment and software, providing technical/scientific assistance to the emerging institutions, initiating and fostering collaborations with partners from industry in view of technology transfer, and increasing the international visibility of the involved institutions by capitalizing on the obtained research results. The project will create the core of the first national cluster in the field of healthcare technologies.

Laser welding of aluminium based metal matrix nanocomposites under high speed imaging and spectroscopic monitoring Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2016-2015 2018 - 2020

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO)

Project website: http://cetal.inflpr.ro/newsite/te-136

Abstract:

Metal matrix nanocomposites (MMnC) are light metals or alloys (matrix) reinforced with nanosized elements. The resulting composite material will have the properties of interest of the metal such as lightweight and resistance to corrosion, but will also gain strength, ductility, and wear resistance, elastic modulus, multiplied by orders of magnitude. However, MMnC are not widespread yet in our everyday life due to the difficulties impeded in joining these metals by conventional welding. The main element of difficulty is to keep the nanoparticles homogeneously spread in the liquid matrix during the welding process. Another drawback for particular aluminium based matrixes is the generation of brittle phases which reduce the mechanical properties of the seam. Therefore current approaches are limited to using stir welding for joining MMnC, the only approach that provided until present some positive results in reducing pores, cracking and dissolution of the reinforcement. The aim of this Project is to conduct welding on such materials using laser sources and to provide significant improvements that will put laser welding on the map for viable welding techniques in case of MMnC materials. We will use different laser sources with variable wavelength and pulse duration, process monitoring by optical spectroscopy, imaging and an in-depth physico-chemical and metallurgical study of the welds. We will use new techniques in order to solve this problem: use of laser beams with very short pulses, use of defocused beams of low energy on thin sheets of MMnC (so that welding to be conduction welding instead of keyhole welding and reducing liquid movement), tests with rapid cooling using liquid nitrogen, low concentrations of dispersed nanoparticle phase in order to diminish clustering phenomena.

Intrinsic properties in microwave dielectric materials investigated by terahertz time-domain spectroscopy Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2016-1711 2018 - 2020

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://infim.ro/en/project/intrinsic-properties-in-microwave-dielectric-materials-investigated-by-terahertz-time-domain-spectroscopy

Abstract:

The main goal of the project is the investigation of extrinsic sources that degrade the complex permittivity of low-loss dielectrics/ ferroelectrics in microwaves, millimeter-waves, and submillimeter-waves. The studies will be focused on the broad-band frequency behavior of bulk dielectrics (titanates, tantalates, niobates) and thin/thick film ferroelectrics (barium tinanate-based films) with different microstructures. In this sense, samples will be prepared by using several experimental techniques (conventional ceramic technology, spark plasma sintering, radio frequency–magnetron sputtering, and pulsed laser ablation deposition). Apart of usual structural and morphological characterizations (X-ray diffraction, electron microscopy), the extrinsic contribution to the complex permittivity will be investigated with following innovative techniques: terahertz time-domain spectroscopy, split ring resonator, quasi-optical free-space measurements, and spectroscopic ellipsometry. It is aimed to solve through the analysis of the synthesis - microstructure - properties cycle a very important scientific and applied problem of national and international interest. This knowledge will allow to achieve the intrinsic limit of dielectric properties of materials with low-loss microwaves, millimeter-waves, and submillimeter-waves.

Synergy of antimicrobial agents incorporated in durable bio-glass coatings for endosseous implants Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2016-1501 2018 - 2020

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://infim.ro/en/project/synerglass/

Abstract:

Nowadays, antibiotic resistance becomes an important issue; as bacterial strains resistant to all known antibiotics appear, we are entering the “post-antibiotic era”. Acute complications emerge after implant surgery, as trauma will weaken the local immune response and allow pathogens to adhere and rapidly evolve within the implantation site. Severity increases in dentistry, where one cannot achieve an oral aseptic environment during implantation.

Hence, the project targets to unveil routes towards the synergic coupled effect of antimicrobial oxide agents (i.e. Ga2O3, CuO, Fe3O4, Ag2O), with different action mechanisms, incorporated in bio-glass magnetron sputtered layers, and thereby, the development of an advanced generation of implant coatings, capable to meet the current challenging requirements of osseous implantology: mechanical durability, match of coating and metallic substrate coefficients of thermal expansion, conservation of network connectivity along with bioactivity and osseointegration ability, match of bone healing rate with coating degradation speed, and effective antimicrobial action against a wide spectrum of pathogens. This will ineluctably translate in the safe and long-lasting performance of functionalized medical devices. Solutions to i) boost and control the duration of antimicrobial effect by means of sacrificial layers, ii) eliminate costly and time consuming stages from the intricate technological chain, and iii) improve the existing in vitro testing protocols, will be also proposed. The degree of innovation comprised in project goals can enable surpassing the current knowledge boundaries in the field of implant coatings, and thus, generate premises for technological transfer to industry and local economical growth. Besides the scientific targets, the project will aim to attract valuable human resources in national research and create opportunities of continual professional formation for young researchers to expand their knowledge and skills

3D laser additive manufacturing of cranial metallic prostheses functionalized with bioactive ceramic coatings Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2016-1309 2017 - 2018

Role in this project: Partner team leader

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://cetal.inflpr.ro/projects/LaMP/PED241/

Abstract:

This Project starts from an existing technology for synthesis of personalized cranial prostheses developed in collaboration between the Laser-Surface-Plasma Interactions Laboratory in INFLPR and Dr. Oblu Hospital in Iasi and it aims towards a radical modification of the method for easier implementation, an increase in prostheses shape and dimensions flexibility and a drastic reduction of production costs. The initial procedure started with acquisition of commercial metallic prostheses shaped in form of a mesh (1), their coating with a thin film of bioactive ceramic by pulsed laser deposition, identification of fractures dimensions by computer tomography (3), manual cutting of the meshes function of the wound dimensions (5). The new method involves a single step direct synthesis by laser additive manufacturing of a prosthesis with required dimensions covered by a bioactive layer, starting from metallic and ceramic powders. The aim is to eliminate the steps that involve acquisition of expensive commercial devices and the deposition techniques that require high vacuum and heating of the prostheses at high temperatures. We aim at the end of the Project to delineate the technology that will allow a single user to scan a patient by computer tomography, the fracture’s dimensions to be introduced in a pre-established CAD-CAM software and with the push of a single button to be able to generate in real time a prosthesis with required dimensions and functionality.

Novel generation of pyroelectric detectors based on polar semiconductors Call name: P 3 - SP 3.2 - Proiecte ERA.NET
ERA-M-NOPYDET 2015 - 2018

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); MICROELECTRONICA SA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website:

Abstract:

The project is proposing to develop a new generation of pyroelectric detectors based on wide gap polar semiconductor materials (e.g. AlN, ZnO) able to withstand high operating temperatures. The innovative aspects will go further beyond the state of the art by proposing multilayer structures based on nitrides (AlN, GaN, etc.) and ZnO-ferroelectric structures with the aim to enhance the sensitivity as much as possible at elevated temperatures. Specific innovative aspects can result also from packaging solutions, electronic for signal processing, etc. The detectors are primarily designated for internal combustion and jet engines used in automobile and airplane industries. The aim is to increase the lifetime of the engines, their safety and to optimize the fuel consumption with reduction of green house gases emissions. The expected impact is very high considering the share of the two industries at EU level and worldwide.

Distribution and dynamics of paramagnetic impurities in nanostructured ZnO for advanced applications in spintronics, opto- and nanoelectronics Call name: Projects for Young Research Teams - RUTE -2014 call
PN-II-RU-TE-2014-4-0939 2015 - 2017

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://www.infim.ro/projects/distribution-and-dynamics-paramagnetic-impurities-nanostructured-zno-advanced-applications

Abstract:

Magnetic and electrical properties of doped nanostructures can be tailored by varying the impurities concentration and distribution, cleverly manipulating their segregation degree. Currently used methods for mapping the nature and distribution of low concentration (

Field effect transistors based on new transparent heterostructures synthesized at low temperatures Call name: Projects for Young Research Teams - RUTE -2014 call
PN-II-RU-TE-2014-4-1122 2015 - 2017

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://www.infim.ro/projects/field-effect-transistors-based-new-transparent-heterostructures-synthesized-low

Abstract:

The main objective of the project is to manufacture transparent field effect transistors with superior performances, based on aluminum nitride gate dielectrics. Although aluminum nitride is a very promising material for such type of applications, its use as gate dielectric in transparent transistors is an international novelty. Therefore, this project can generate, by its implementation, a significant impact to the development of transparent electronics. The project proposal will entail complex and fluid research activities, from the synthesis of materials and their characterization in view of optimization, to the fabrication of high performing devices on both rigid and flexible substrates. In order to achieve transistors with an functional response superior to the one of the devices used currently in transparent electronics, the project team will employ a series of optimization solutions (testing new geometries, post-fabrication thermal treatments and various encapsulation solutions). Last but not least, the project will represent a great opportunity for the young project team to form a strong scientific nucleus, which, by using the complex infrastructure of the host institution, will be able to contribute to the progress of micro-nano-electronics, on both nationally and internationally level.

Enhancement of dental implants biointegration by coating with bioglass thin films with osteoinductive and antimicrobial properties Call name: Projects for Young Research Teams - RUTE -2014 call
PN-II-RU-TE-2014-4-0180 2015 - 2017

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://www.infim.ro/projects/enhancement-dental-implants-biointegration-coating-bioglass-thin-films-osteoinductive-and

Abstract:

The project aims to develop and test in vivo a new generation of dental implants functionalized with bioglass (BG) coatings with osteoinductive and antimicrobial properties, capable to enable a faster osseointegration, safety and comfort, a high success rate, and long lifetime. The project will build on a rich experience in fabricating BG coatings by magnetron sputtering (RF-MS) and a trans-disciplinary and dynamic team, constituted of young researchers with complementary expertise. The BG implant-coating design refinements and in vitro functional interrogations will continue, in order to maximize the biological response, allowing, in a next stage, the in vivo testing on animal model of the true potential of BG films synthesized by RF-MS to induce a rapid and long-lasting osseointegration. The novel research directions to be addressed – determination of BG critical coating thickness, attainment of BG layer dissolution/tissue reconstruction equilibrium, tailoring of the surface energy targeting the augmentation of osseointegration, study of the synergy of various antimicrobial agents, or the preliminary studies regarding alkali-free BG films from innovative formulations – will work fluidly for the accomplishment of the project objectives. Another project priority is the creation of a critical mass of young researchers able to coherently implement complex themes, and to actively involve in national/international consortia for the development of the biomedical domain.

Temperature sensor based on GHz operating AlN/Si SAW structures Call name: Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-0677 2014 - 2017

Role in this project: Partner team leader

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE- DEZVOLTARE PENTRU MICROTEHNOLOGIE - IMT BUCURESTI INCD

Project partners: INSTITUTUL NATIONAL DE CERCETARE- DEZVOLTARE PENTRU MICROTEHNOLOGIE - IMT BUCURESTI INCD (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO); ROM-QUARTZ S.A. (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO)

Project website: http://www.imt.ro/setsal

Abstract:

The main objective of this project consists in the manufacturing of the first temperature sensor based on a SAW type device on AlN/Si. The sensor is based on the variation of the SAW resonance frequency vs. temperature. The sensor will be characterized ”on wafer” in the 25-150 oC temperature range. The sensor structures mounted on a special ceramic carrier, provided with SMA connectors and cables, will be characterized in the 5-500 K temperature range inside a cryostat. We aim to obtain a sensitivity >75 ppm/oC (on-wafer measurements) and 60 ppm/ oC for measurements with connectors and cables, in the 23-150 oC temperature range.

The project corresponds to the world wide effort to obtain acoustic devices operating in the gigahertz frequency range, using wide band gap semiconductors (AlN, GaN). These materials have very good piezoelectric properties. High quality GaN and AlN layers grown or deposited on Sapphire SiC or Si substrate permits to use in the fabrication protocol nanolithography, micromachining techniques and monolithic integration. The advantage of using AlN for the SAW structure consist in the possibility to obtain a higher resonance frequency and a higher sensitivity for the sensor. The project has few objectives beyond the state of the art.

The main element will be a SAW structure on AlN/Si with the resonance frequency in the 6-9 GHz range. The highest resonance frequency obtained up to now for SAW structures on AlN/Si is 5.1 GHz and was reported by the IMT and INCD-FM groups, partners in this project, using an IDT structure with digits and interdigit spacing 300 nm wide. This project requires interdigitated transducers having the digit/interdigit spacing 80-150 nm wide, a challenge due to the major difficulties of the nanolithographyic process on materials like AlN or GaN. Up to now, the narrowest lines on AlN have been reported on an AlN/Diamond based SAW structure in 2012 (200 nm).

For the proposed sensor a „single resonator” structure will be developed. Compared with classical structures based on face-to-face resonators and delay lines, the single resonator structure offers few advantages: higher quality factor, lower losses and mainly, higher values for the sensitivity, as it was recently proved by IMT for GaN.

A two steps, low temperature, deposition process will be developed, for the synthesis of thin AlN films. The goal is to lower the FWHM of rocking curve at 1.5° for the AlN films deposited on Si.

There is a potential advantage of monolithic integration of the SAW based AlN temperature sensor in a CMOS ICs. AlN technology is CMOS compatible, due to its low deposition temperature. In such circuits fabrication protocols contain nanolithographic processes, therefore these processes for the sensor will not add significant costs.

The project consortium consists in four teams with excellent expertise and complementarity in the project topics. The IMT team has many contributions in the state of the art for acoustic devices on GaN and AlN, in nanolithography and microwave characterization. INCD-FM has an excellent expertise in high quality AlN films deposition. UPB has excellence expertise in design and modelling of high frequency devices and circuits. ROMQUARZ is the only Romanian enterprise with an authentiq experience in SAW type devices manufacturing on classical piezoelectric materials.They have been involved in SAW devices manufacturing on non-semiconductor materials (quartz, lithium niobate, etc) in the last 20 years.

Multi-parameter nanosensors synthesized by advanced metal oxide technologies Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0735 2012 - 2016

Role in this project: Key expert

Coordinating institution: Institutul National de Cercetare-Dezvoltare pentru Fizica Laserilor, Plasmei si Radiatiei (INFLPR)

Project partners: Institutul National de Cercetare-Dezvoltare pentru Fizica Laserilor, Plasmei si Radiatiei (INFLPR) (RO)

Affiliation: Institutul National de Cercetare-Dezvoltare pentru Fizica Laserilor, Plasmei si Radiatiei (INFLPR) (RO)

Project website: http://lspi.inflpr.ro/contracte%20noi/site%20ID%20304/index.html

Abstract:

The main goal of this project is the research, design, testing and prototype fabrication of multi-parameter sensors based on nanostructured metal-oxides. A selection of advanced laser-assisted techniques (PLD - pulsed laser deposition; CPLD - combinatorial pulsed deposition, MAPLE - matrix assisted pulsed laser evaporation, LIFT - laser induced forward transfer, PLALM-pulsed laser ablation in liquid media) along with alternative non-laser based techniques such as MS - magnetron sputtering will be considered to fabricate high-quality nanometric/nanostructured metal oxide layers. The multipulse laser ablation will be conducted in parallel with ns (excimer) or fs (Ti:sapphire) laser pulses. The materials of interest for sensing in this project are Fe2O3, TiO2, ZnO, and WO3. The end products will be advanced thermo-photo-tenso-gas-magnetic-bio sensors (multi-parameter sensors) in form of thin films, nanoparticles or nanowires on integrated microelectronic and optical components. The sensing structures will be: monosensors based on single metal oxide layers, multi-parameter sensors with alternate layers in form of parallel strips or superposed layers of the same oxide in different structures, or multi-parameter sensors with alternate layers in form of parallel strips of different oxides. For all types of deposited nanostructures, the sensing performance will be boosted through coverage with noble metal nanoparticles generated by PLALM.

Biofunctionalization of 3D titanium implants with highly adherent bioactive glass films produced by magnetron sputtering: from research to production Call name: Projects for Young Research Teams - TE-2011 call
PN-II-RU-TE-2011-3-0164 2011 - 2014

Role in this project: Project coordinator

Coordinating institution: Institutul National de Cercetare-Dezvoltare pentru Fizica Materialelor

Project partners: Institutul National de Cercetare-Dezvoltare pentru Fizica Materialelor (RO)

Affiliation: Institutul National de Cercetare-Dezvoltare pentru Fizica Materialelor (RO)

Project website: http://www.infim.ro/node/3887

Abstract:

Bioactive glasses (BG) are osteoproductive-type inorganic materials which present the ability to form a bond with the living bone tissue and enhance the osteosynthesis process. There are still no commercial BG implant-type coatings because of their poor adhesion determined by the significant CTE mismatch between BG and Ti-based implant substrate. The recent progresses made on the synthesis/processing of BGs that allowed the formulation of new compositional systems with lower CTE and enhanced bioactivity reopened the issue of BG coatings as a viable biomedical solution for load-bearing applications.The project will propose magnetron sputtering as a solid deposition solution, aiming to create a new class of implants with extended life, which will not longer require reintervention. Solutions for improving the BG coating adhesion to the metallic substrate will be prospected. The implant coatings will be fully characterized by: FTIR, Raman, XPS, XRD, SEM-EDS,TEM, pull-out and nanoindentation tests. Their biofunctionality will be tested by in vitro tests in solutions that mimic the intercellular environment: the classic SBF ((ISO/FDIS 23317:2007) and the innovative test of DMEM cell culture media at 37°C and 5% CO2. Their citotoxicity, bioactivity and differentiation induction capacity will be comprehensively studied in vitro on a stem cells/osteoblast cell culture model.

Study of Induced Effects by Defects and Impurities on Optical, Electrical and Electronic Properties of Wide Band Gap Semiconductors Call name: Projects for Young Research Teams - TE-2011 call
PN-II-RU-TE-2011-3-0016 2011 - 2014

Role in this project: Key expert

Coordinating institution: Institutul National de Cercetare-Dezvoltare pentru Fizica Materialelor

Project partners: Institutul National de Cercetare-Dezvoltare pentru Fizica Materialelor (RO)

Affiliation: Institutul National de Cercetare-Dezvoltare pentru Fizica Materialelor (RO)

Project website: http://www.infim.ro/projects/study-induced-effects-defects-and-impurities-optical-electrical-and-electronic-properties

Abstract:

The aim of this project is the analysis of wide band gap semiconductor (WBS) thin films by use of non-destructive characterization techniques: ellipsometry, XRD and luminescence. These materials have existing or potential applications in optics and/or electronics. WBS thin films will be obtained by use of different thin films growth methods: pulsed laser deposition, magnetron sputtering, sol-gel and direct growth from colloidal suspension. The influence of defects and impurities on optical, electrical and electronic properties of such materials will be analyzed. The results from presented optical studies will be verified by conventional electrical measurements and structural analysis by electronic microscopy.

The project is focused on 3 types of wide band gap semiconductors: zinc oxide (ZnO) pure or doped with different elements; zinc nitride (Zn3N2) and the intermediary phases during controlled oxidation; and aluminum indium nitride (AlxIn1-xN) pure and doped with Zn. One objective is to grow and to characterize the n-type semiconductors with reproducible properties.

The estimated results will bring new insights regarding the physics phenomena involved in the growth process and the material properties, essential for obtaining viable results. In addition, special activities will be included in the project concerning the correlation between the fundamental knowledge and practical necessities of electronics, and the standardization of the growth of thin films below 200C.

Surface and Interface Science: Physics, chemistry, biology, applications. Call name: Complex Exploratory Research Projects - PCCE-2008 call
PN-II-ID-PCCE-2008-0076 2010 - 2013

Role in this project: Key expert

Coordinating institution: INSATITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA MATERIALELOR

Project partners: INSATITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA MATERIALELOR (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU INGINERIE ELECTRICA (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE CAROL DAVILA DIN BUCURESTI (RO); UNIVERSITATEA ALEXANDRU IOAN CUZA DIN IASI (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA TEHNICA DIN IASI (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE DIN CLUJ-NAPOCA (RO); UNIVERSITATEA BABES-BOLYAI DIN CLUJ-NAPOCA (RO); ACADEMIA ROMANA FILIALA TIMISOARA (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE VICTOR BABES TIMISOARA (RO)

Affiliation: INSATITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA MATERIALELOR (RO)

Project website: http://www.infim.ro/projects/siinta-suprafetelor-si-interfetelor-fizica-chimie-biologie-aplicatii

Abstract:

This project intends to provide a financial background for developing the community of Surface Science in Romania. Thematics from physics and chemistry of surfaces will be tackled together with applications of surface science in biology and in technology; also new standards will be proposed for consistent data interpretation. The Project clusterizes the most important Romanian teams with preoccupations in surface science, namely all X-ray photoelectron spectroscopy teams with most of the community of thin film deposition, cluster and nanoparticle physics, surface reactivity, surface chemistry and photochemistry, multilayer physics and applications, magnetic fluids, functionalization of surfaces, cell attachment, studies of cellular membrane. The research teams belong to highly prominent Universities and Research Institutes from practically all geographical areas of the country. The Consortium disposes of infrastructure exceeding 10 million euros, of more than one hundreed highly qualified scientists which have generated during the past years more than 3 % of the national scientific visibility. The research will concentrate into four main areas: (i) magnetic properties of surfaces and low-dimensional systems; (ii) electrical properties of surfaces and heterostructures; (iii) surface chemistry; (iv) application of surface science in functionalized systems and in biology, together with (v) an area concentrating on standardization in X-ray photoelectron spectroscopy, Auger electron spectroscopy and related techniques. Each area is divided into several thematics; each thematic has at least one in-charge scientist. This Project will foster the surface science community in Romania and will contribute strongly to the development of high-technological industrial preoccupation in all geographical areas concerned. Several cutting-edge applications are also foreseen by pursuing the fundamental research proposed.

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List of research grants as project coordinator or partner team leader	Download (270.87 kb) 08/10/2019
Significant R&D projects for enterprises, as project manager	Download (111.56 kb) 08/10/2019
R&D activities in enterprises
Peer-review activity for international programs/projects