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Romania
Citizenship:
Romania
Ph.D. degree award:
2012
Mr.
Vlad-Andrei
ANTOHE
Assoc. Prof. Ph.D. Eng.
Associate Professor
-
UNIVERSITATEA BUCURESTI
Other affiliations
Scientific Collaborator
-
UNIVÉRSITE CATHOLIQUE DE LOUVAIN
(
Belgium
)
Researcher | Teaching staff | Scientific reviewer
18
years
Web of Science ResearcherID:
http://www.researcherid.com/rid/D-2158-2012
Personal public profile link.
Curriculum Vitae (17/01/2022)
Expertise & keywords
Nanotechnology; Nanomaterials science and engineering
Nanowires development by template free/assisted methods
Development of nanoporous templates; Track-etched polycarbonate templates; Supported and self-supported nanoporous anodic aluminum oxide (alumina) templates
Fabrication and characterization of nanostructured electronic and otoelectronic devices
Solar cells; Hybrid organic/inorganic photovoltaic cells; Solar cells based on A2-B6 heterojunctions
Solid state physics; Electricity and Magnetism; Biophysics
Nanomaterials design by electochemical pathways; Electrochemical deposition; Electropolymerization; Electrochemical oxidation (Anodization); Electropolishing
Physical vapor deposition (PVD); Chemical vapor deposition (CVD)
Cleanroom micro and nano-processing; Optical lithohraphy; Electron-beam lithography (EBL)
Scanning electron microscopy (SE, BSE, EDX, STEM); Atomic Force microscopy (AFM, C-AFM, EFM, MFM, PFM, STM)
Development of functional nanomaterials for sensors and biosesors
Development and characterization of Transparent Conducting Oxides (TCO)
Nanolithography by nano-indentation (scratching) with an Atomic Force Microscope (AFM)
Nanolithography by Local Anodic Oxidation (LAO) with an Atomic Force Microscope (AFM)
Fabrication and characterization of optical devices based on Surface Plasmon Resonance (SPR)
Projects
Publications & Patents
Entrepreneurship
Reviewer section
Impact of nanocomposite modified anodes on microbial fuel cells performance through changes in biofilm microbial community composition
Call name:
P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-0956
2021
-
2023
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BUCURESTI
Project partners:
UNIVERSITATEA BUCURESTI (RO)
Affiliation:
Project website:
https://sites.google.com/view/anca-dumitru/home/research/biomoda-mfc
Abstract:
Microbial fuel cells (MFCs) are sustainable technology that potentially combines wastewater treatment and bioenergy production in a single step by exploiting the microbial metabolism developed on the electrode. Exploring of feasible MFCs technology could be the answer to the worldwide concern for development of alternative water cleanup technology. Despite all efforts, practical applications of MFCs still face a number of challenges and require extensive investigation. Among them anode materials and biofilm microbial community developed on the anode are identified to play a pivotal role in MFCs performance. The present proposal aims to bring new insights on the improvement of MFCs performance thorough anode modification with conducting polymers/nano- metal oxide nanocomposites correlated with characterization of biofilm microbial communities composition on modified electrodes. The outcome of the proposal will be quantified by: development of new modified MFC anode based on conducting polymers/nano-oxide metal nanocomposite; new insights in the understanding of biofilm microbial community selection on nanocomposite modified anode and MFC performance, increasing researchers potential by accumulating knowledge, expertise and results in the interdisciplinary field; reinforcement of the interdisciplinary team in a research area that becomes a necessity for higher chances in European projects competition and results dissemination in the scientific community.
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Nanoimprint lithography for photovoltaic devices
Call name:
P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2019-0846
2020
-
2022
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BUCURESTI
Project partners:
UNIVERSITATEA BUCURESTI (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://mdeo.eu/MDEO/Proiecte/TE25/
Abstract:
This proposal introduces the use of nanoimprint lithography (NIL) for the development of photovoltaic devices based on cadmium telluride (CdTe) as absorber. Our innovative design assumes that CdTe nanopillars (CdTe nnp) with dimensions of 500 nm × 500 nm and 700 nm × 700 nm will be prepared by NIL and electrochemical deposition, leading to an entirely nanostructured absorber. The heterojunction will be completed either by cadmium sulfide (CdS), zinc sulfide (ZnS), and zinc selenide (ZnSe), as window layers, deposited by radio frequency magnetron sputtering. As back electrode, copper (Cu) and gold (Au) co-evaporated thin films will be used, while the transparent electrode will be obtained by radio frequency magnetron sputtering from indium tin oxide (ITO).
The specific objectives of this proposal are:
Ob1. The fabrication and complete characterization of constitutive and Cu:Au/CdTe nanopillars/CdS/ITO photovoltaic device
Ob2. The fabrication and complete characterization of constitutive and Cu:Au/CdTe nanopillars/ZnS/ITO photovoltaic device
Ob3. The fabrication and complete characterization of constitutive and Cu:Au/CdTe nanopillars/ZnSe/ITO photovoltaic device
The chosen of these materials was motivated by the very good results obtained for AIIBVI heterojunction, in planar configuration, and the good compatibility between CdTe as absorber and CdS, ZnS, and ZnSe as window layer, on one hand, and on the other by the extensive expertise of project leader in the research area of photovoltaic devices based on inorganic materials. Moreover, due to nanostructuring, the active area surface will be considerably increased and the photo-electric processes at the p-n interface will be improved, as so the overall performance of the device.
We admit that at the end of this project an innovative working routine of development of photovoltaic structures will be delivered together with complete reports describing the physical properties of customized devices and their components.
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Nanowire-Templated Back-Electrodes for High Efficiency Solar Cells
Call name:
P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2019-0868
2020
-
2022
Role in this project:
Project coordinator
Coordinating institution:
UNIVERSITATEA BUCURESTI
Project partners:
UNIVERSITATEA BUCURESTI (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://mdeo.eu/MDEO/Proiecte/TE115/ ; http://ava.myasustor.com/nanodell
Abstract:
This project deals with some of the yet remaining challenges related with the “Second Generation” of solar cells based on semiconducting AII-BVI heterojunctions, namely the improving of charge collection efficiency by smartly re-configuring the cell architecture. In this context, we proposed a novel “substrate”-type cell design relying exclusively on non-toxic chalcogenide Zn-based compounds, and owning nanostructured electrodes for improving the collection efficiency of the photo-generated charge carriers.
On one hand we will develop a reliable platform for the growth of localized arrays of vertically-aligned nanowires featuring geometrical parameters (i.e. density and aspect-ratio) adjustable in a large extent. Such nanowire-templated substrates will be used as highly-performant nanostructured back-electrodes for holes collection within the cell structure. On the other hand, we will improve the electrons collection too, by creating a novel and optimized ZnO-based “window layer/top transparent electrode” interface.
All the technological novelties approached in this project will certainly open an outstanding pathway towards large-scale integrability and manufacturing, not only of more efficient photovoltaic elements, but of the next generation of modern nanostructured devices, possessing small physical dimensions but extremely high functional surfaces.
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Advanced nanoelectronic devices based on graphene/ferroelectric heterostructures (GRAPHENEFERRO)
Call name:
P 4 - Proiecte Complexe de Cercetare de Frontieră
PN-III-P4-ID-PCCF-2016-0033
2018
-
2022
Role in this project:
Key expert
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); UNIVERSITATEA BUCURESTI (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://www.imt.ro/grapheneferro/
Abstract:
Applications such as high-frequency and neuromorphic circuits, optoelectronic/plasmonic detection of biomolecules or thermo-opto-electronics energy harvesting, require tunable and reconfigurable functionalities. Graphene is suitable for these applications because of electrostatic doping, its optical constants being tuned via gate voltages. However, oxide substrates limit the mobility in graphene to few thousands cm2/V•s. On the contrary, the mobility in graphene/ferroelectric (G/F) heterostructures is 2-3 orders of magnitude larger. The groundbreaking nature of the project is based on the possibility of significantly enhancing the functionality of graphene-based transistors/devices by using crystalline ferroelectric substrates instead of common oxides or SiC substrates. The G/F heterostructures allow: (i) the achievement of very high mobilities in G/F field effect transistors (FETs), which push the transistor gain in the 0.3-1 THz range, far above 70 GHz at which the maximum gain is attained nowadays, (ii) the fabrication of uncooled tunable detectors working in the THz and IR, (iii) the exploitation of the hysteretic resistance behaviour, essential for neuromorphic applications such as artificial synapses, (iv) the fabrication of reconfigurable microwave circuits, and (v) of tunable thermoelectronic devices, since graphene displays a giant thermoelectric effect. The project will consist of the design, fabrication and testing of groundbreaking, innovative nanoelectronic devices, in particular ultrafast electronic devices, neuromorphic circuits for computation, reconfigurable and harvesting devices, all based on the outstanding physical properties of G/F heterostructures. All fabrication techniques for growing graphene-ferroelectric heterostructures in this project should be scalable at wafer scale. The project is implemented by a consortium of 3 national R&D institutes and the leading Romanian university, which have the necessary advanced infrastructure.
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Extensive use of experience in space and security activities
Call name:
P 1 - SP 1.2 - Proiecte complexe realizate in consorții CDI
PN-III-P1-1.2-PCCDI-2017-0371
2018
-
2021
Role in this project:
Key expert
Coordinating institution:
INSTITUTUL DE STIINTE SPATIALE-FILIALA INFLPR
Project partners:
INSTITUTUL DE STIINTE SPATIALE-FILIALA INFLPR (RO); UNIVERSITATEA DE VEST TIMISOARA (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU OPTOELECTRONICA INOE 2000 INCD (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA PAMANTULUI - INCDFP RA (RO); UNIVERSITATEA TEHNICA DIN CLUJ - NAPOCA (RO); CENTRUL INTERNAŢIONAL PENTRU PREGĂTIRE AVANSATĂ ŞI CERCETARE ÎN FIZICĂ-FILIALĂ A INCDFM BUCUREŞTI (RO); UNIVERSITATEA BUCURESTI (RO); INSTITUTUL ASTRONOMIC (RO); UNIVERSITATEA "DUNAREA DE JOS" (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://www.spacescience.ro/projects/vess
Abstract:
The goal of the project is to improve the institutional performance of the partners, including those with the potential for relaunching, by developing space and security competencies and by encouraging the orientation of research activities in pragmatic directions. Space activity involves the development of technologies and technologies validated in extreme conditions, which have significant applicative potential in various priority economic and social domains.
The VESS project is based on the experience gained by the Coordinator through participation in ESA scientific missions, the development and validation of flight software and hardware components, the development of countermeasures in the context of human crew space missions. Partners contribute with their own skills in areas such as math physics, computer science, advanced technologies, astronomy. VESS will provide knowledge sharing and exploitation within and outside the consortium by creating technology transfer and knowledge transfer offers to other areas of activity. Furthermore, VESS will allow joint use of existing research infrastructures for partners. The four component projects are oriented, each by its specificity, both to the consolidation of the Romanian presence in the activities of ESA, as well as to the capitalization in the economic and social environment of the obtained results. Ensuring synergic interaction between component projects at the level of the complex project will maximize the chances of success and superior valorisation of the results. The joint RDI program to be developed will lay the foundations for a field of competence in space and derivative applications. The offer of services to the socio-economic environment will be achieved by organizing workshops that will be provided with adequate advertising. The patenting of the results will be done by the partners directly involved in the activities that produced these results.
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Eco-innovative technologies for recovering of the platinum group metals from scrap catalytic convertors
Call name:
P 1 - SP 1.2 - Proiecte complexe realizate in consorții CDI
PN-III-P1-1.2-PCCDI-2017-0185
2018
-
2021
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BUCURESTI
Project partners:
UNIVERSITATEA BUCURESTI (RO); INSTITUTUL DE CHIMIE "CORIOLAN DRĂGULESCU" (RO); INSTITUTUL DE CHIMIE MACROMOLECULARA "PETRU PONI" (RO); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO); INSTITUTUL DE BIOLOGIE (RO); INOE 2000 - FILIALA INSTITUTUL DE CERCETARI PENTRU HIDRAULICA SI PNEUMATICA BUCURESTI RA (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://www.3nanosae.org/ecotech-gmp/
Abstract:
Autocatalysts are used to convert vehicle exhaust (carbon monoxide, nitrogen oxides, hydrocarbons, etc.) into less harmful products, such as: carbon dioxide and nitrogen. Platinum group metals (PGMs) are the active component in autocatalysts and consequently the auto industry is the largest PGM consumer. Limited PGM resources demands recycling to support an expanding auto market. Traditional recycling methods are using high temperatures and highly oxidative agents (e.g. aqua regia) making them large energy consumers and environmental pollutants. As a result, there is a need to develop alternative ways to recycle PGMs with a significant decrease in energy consumption and a reduced impact on the environment. ECOTECH-GMP project at hand draws from the knowledge, skills and competences of top leading Romanian research institutions in materials science, physics, chemistry and engineering for creating the know-how to develop the eco-technologies required to recycle PGM with zero emissions. There is currently no such technology available in the world. Four sub-projects are proposed to solve the issue of PGM eco-recycling, encompassing electrochemistry, coordination chemistry, hydrodynamics and bioelectrochemistry. The sub-projects are intertwined and function in synergy to deliver several solutions to the issue at hand. The potential of this project is mesmerizing for any interested company: small initial capital, low energy consumption and high throughput. The benefits for the society at large are thrilling: improved public health because of decreased toxic pollutants (chlorides, nitrates, nitrides, etc.) and creating new jobs owing to the potential of this technology to transform into an industry.
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Nanostructures for quantum and plasmonic computing
Call name:
P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0122
2017
-
2019
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BUCURESTI
Project partners:
UNIVERSITATEA BUCURESTI (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://www.mdeo.eu/MDEO/Proiecte/ID35/Main.php
Abstract:
The project addresses the problem of fast, reliable and accessible computation motivated by the fact that present-day classical Boolean computers are reaching rapidly their limits. Two alternative approaches based on new principles and architectures will be investigated in this multidisciplinary project: quantum and plasmonic computing, the objective being the development of novel and compact configurations of quantum and plasmonic logic gates and algorithms implemented using nanostructures.
This multidisciplinary project will investigate
(i) quantum computing configurations in ballistic two-dimensional electron gases/materials, focusing on developing compact configurations for quantum algorithms working at room-temperature and/or using current measurements as readout procedures.
(ii) logic gates in the plasmonic slot configuration, which involves gap surface plasmons propagating along narrow dielectric gaps in metals (of the order of 100 nm) that can be fabricated with standard technologies.
(iii) tunable plasmonic slot logic circuits with enhanced functionality, in which two-dimensional materials with gate-tunable refractive index influence the outcome of nearby plasmonic circuits.
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Multilayered Photovoltaic Structures for Space Applications
Call name:
Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-0776
2014
-
2017
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BUCURESTI
Project partners:
UNIVERSITATEA BUCURESTI (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH (RO); MGM STAR CONSTRUCT S.R.L. (RO)
Affiliation:
UNIVERSITATEA BUCURESTI (RO)
Project website:
http://mdeo.eu/MDEO/Proiecte/PN288-2014/
Abstract:
Thin film based PV structures are well fitted for space technology, due to their reduced mass. This proposal aims at investigating technological routes for fabricating thin film based multiple junction photovoltaic (PV) structures of the type ZnS/ZnSe/CdTe in superstrate configurations and to study their endurance to energetic (2-10 MeV) protons and alpha particles, which are the main components of cosmic rays, at 10^10 - 10^14 cm^-2 fluencies. In the superstrate configuration one starts with depositing the transparent front-electrode onto the glass substrate which supports the entire structure, and then, on top of it the ZnS, ZnSe, CdTe layers and finally the back-electrode. The efficiencies of the cells in superstrate configurations will be characterized, and also their endurance to irradiation. Special attention will be paid to the physical properties and the electrical response of the back-contact metal/CdTe. CdTe, an excellent photon absorber with a forbidden gap of 1.4 eV and a large light absorption coefficient, is known as a “difficult” semiconductor: due to its rather large work function, a special care must be taken to prepare a quasi-ohmic low-resistance contact with a metal. Ion implantation will be used to control electrical properties of CdTe layer, by doping with properly selected electrically active impurities. A special attention will be paid to the quality of interfaces; an optimization of the PV structures will be performed. The nature of the defects introduced by irradiation will be studied and their influence on the performance of the structures will be indicated.
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Advanced Soft Systems for Applications in Optics and Materials Science
Call name:
Projects for Young Research Teams - TE-2010 call
PN-II-RU-TE-2010-0225
2010
-
2013
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA DIN BUCURESTI
Project partners:
UNIVERSITATEA DIN BUCURESTI (RO)
Affiliation:
UNIVERSITATEA DIN BUCURESTI (RO)
Project website:
http://www.unibuc.ro/n/cercetare/proiecte/fizica/PN-II-RU-TE-2009-225/ ; http://www.unibuc.ro/n/cercetare/proiecte/fizica/PN-II-RU-TE-2009-225/ro/
Abstract:
The project describes a multidisciplinary program whose goal is to develop and investigate a new class of advanced materials with special enhanced properties in order to exploit their unique optical, dielectrical, magnetical and structural features. The controlled design, characterization and functionalization of self-assembled soft material structures over several length scales is currently one of the most important challenges facing materials science, in order to combine their unique properties to modulate the order and the physical properties of extant systems. An initial step is to optimize each desired property via adequate formulations. By using modern holographic and lithographic techniques in parallel with original research ideas we aim for creating innovative advanced systems with special properties (and their characterization). The addressed aspects will demonstrate that the proposed subject can significantly contribute to the development of knowledge in the field through its interdisciplinary character, originality, elaboration of new experimental methods and theoretical approaches. The technological impact is further increased by significant fundamental research. Our primary objectives hinge on the importance of interdisciplinary research, as it symbiotically combines our expertise in the field of physics, chemistry and engineering.Much new physics and exciting novel scientific prospects may be uncovered by studying the wave propagation in quasi-periodic structures made out of optically-active soft materials. Therefore, we anticipate strong scientific impact from the results. Beyond the mainly scientific goals that can be realistically achieved by the end of this project, there is a longer-term motivation associated with the formation of this young, yet experienced work team corroborated with the high technological potential of this work in the field of photonics and advanced materials.
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FILE DESCRIPTION
DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects
Download (90.39 kb) 17/01/2022
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