BrainMap

Polosan Silviu

- INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Researcher

Web of Science ResearcherID: J-3593-2019

Expertise & keywords

Highly conductive and transparent metallic electrodes for Organic Light-Emitting Diodes Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2021-0828 2022 - 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)

Affiliation:

Project website: https://infim.ro/project/electrozi-metalici-transparenti-si-conductori-pentru-diode-organice-electroluminescente/

Abstract:

The project describes fabricating transparent metallic electrodes (TCE) for Organic Light Emitted Diodes technologies, which enable increasing the charge transport across the OLED sandwich structures and increasing the light output through double side electroluminescence. Furthermore, as a novelty, applying a patent based on low-energy electron irradiation for metallic surfaces will facilitate the obtaining transparent anodes with higher electrical conductivity through the decrease in roughness, using nanozonal heating of metallic thin films under the electron beam. Concerning the transparent cathodes, the project develops a new strategy for the low work function electrodes obtained for alloys between an alkali earth metal (magnesium) with the more stable silver metal. The optimisation of Ag-Mg alloys as cathodes with uniform distribution and optimal Ag/Mg ratio represents the second challenge of this current project. This fact implies obtaining suitable quality alloy thin films using the thermal co-evaporation technique with two evaporation sources, which is compared with the thermionic vacuum arc deposition technique.

Flexible organic light emitting diode on bacterial cellulose substrate with transparent electrospun web anode. Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2019-1459 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 CHIMICO - FARMACEUTICA - I.C.C.F. BUCURESTI (RO)

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

Project website: https://infim.ro/en/project/flexible-organic-light-emitting-diode-on-bacterial-cellulose-substrate-with-transparent-electrospun-web-anode/

Abstract:

The project brings together three new technologies: a) the using of modified bacterial cellulose for FLOEDs substrates by improving the transparency and mechanical properties. This type of technology covers the flexibility class of materials in which the glass substrates are removed from the future electroluminescent diodes. Besides this aspect, the future of the FOLEDs opens new perspectives in the optoelectronic area; b) applying the electrospun web technology for the FOLEDs anodes to increase the light output of these devices. The appliance of this technology will offer an alternative of the brittle and expensive indium tin oxide, allowing the improvement of the rolling technologies for the displaying and lightening domain; c) integrating of the new organometallic compound with dual electroluminescence as emissive layer and comparison with the commercial one. The strategy consists of using a freestanding sandwich structure with successively deposited organic layers onto a transparent electrospun metallic web as an anode. Thus, this structure will be easily attached to the glass and BC composite membrane by thermal transfer to obtain either OLEDs and FOLEDs devices. A comparison between the luminance of the FOLEDs and OLEDs will be performed related to the transparency of the BC substrate and electrospun web anode. The level of the involved technologies will be tested and validated in laboratory conditions as a functional system while the performances will be highlighted in comparison with classical technologies.

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:

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.

New advanced nanocomposites. Technological developments and applications Call name: P 1 - SP 1.2 - Proiecte complexe realizate in consorții CDI
PN-III-P1-1.2-PCCDI-2017-0871 2018 - 2021

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 OPTOELECTRONICA INOE 2000 INCD (RO); UNIVERSITATEA DE VEST TIMISOARA (RO); ACADEMIA ROMANA FILIALA TIMISOARA (RO); UNIVERSITATEA BABES BOLYAI (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA TEHNICA-IFT IASI (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO); INSTITUTUL NATIONAL DE CERCETARE- DEZVOLTARE PENTRU MICROTEHNOLOGIE - IMT BUCURESTI INCD (RO); UNIVERSITATEA "DUNAREA DE JOS" (RO); UNIVERSITATEA TRANSILVANIA BRASOV (RO); Ministerul Apararii Nationale prin Centrul de Cercetare Stiintifica pentru Aparare CBRN si Ecologie (RO)

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

Project website: http://infim.ro/project/kuncser_noi_directii_de_dezvoltare_tehnologica_si_utilizare_nanocompozite_avansate_47pccdi_2018

Abstract:

The development of complex nanocomposite materials consisting of different matrices (polymer-like, oxides, intermetallics, liquids) functionalized by different nasnostructured additions (carbon allotropes, magnetic nanoparticles with different organizations, nanostructured semiconductors, etc.) is the aim of this project. The unique combinations of interacting nanophases offeres to the hybrid nanocomposite material new or enhanced proprieties of high interest for applications. In this context, according to the previous experience of the involved teams, the complex project (formed by 4 component projects) is focused on the development of new optimized nanocomposite systems to be included in experimental demonstrators or final products to be transferred to economical companies. The project will contribute both to an increased scientific visibility of the partners as well as to enhancing the institutional performances by the development of new technical and scientific capacities.

Smart multifunctional materials for high-tech applications Call name:
POC 2016 - 2020

Role in this project: Partner team leader

Coordinating institution: INSTITUTUL NAŢIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA MATERIALELOR - INCDFM BUCUREŞTI

Project partners: INSTITUTUL NAŢIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA MATERIALELOR - INCDFM BUCUREŞTI (RO); NANOM MEMS SRL (RO)

Affiliation: INSTITUTUL NAŢIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA MATERIALELOR - INCDFM BUCUREŞTI (RO)

Project website:

Abstract:

High efficiency electrospinning Call name: Joint Applied Research Projects - PCCA-2011 call, Type 2
PN-II-PT-PCCA-2011-3.2-1017 2012 - 2016

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 FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO); UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); UNIVERSITATEA BUCURESTI (RO); ADINA S.R.L. (RO)

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

Project website: http://www.infim.ro/projects/high-efficiency-electrospinning

Abstract:

The main objective of the project is to develop a highly efficient alternative of the electrospinning method for preparing polymer nanofibers. The fabrication process we develop aims at using, instead of the classical spinnerets (syringes and pipettes), arrays of metallic micronic and submicronic tubules.

Secondary objectives will be the fabrication of functional metallic fibers, fabrics and products based on it for shielding applications and of complex fibers and fabrics for photovoltaic applications.

The process of electrospinning has numerous advantages. Properties of the fibers can be well controlled. The fibers are very thin and have a high length to diameter ratio, thereby providing a very large surface area per mass unit. A wide range of polymers can be processed in this manner including here natural polymers such as collagen, fibrinogen or polysaccharides. Is a method that allows one to deposit very thin polymer fibers, diameter down to few tens of nanometers.

Although the process is studied since long time ago, a scan through recent scientific literature presents the main shortcoming of the method, the low yield in terms of quantity of material produced.

Thus, the consortium approaches a problem of high technical and scientific interest, namely to develop an alternative to the method in order to increase the efficiency of nanofiber fabrication through electrospinning. We aim at replacing the classic syringe needle, pipette or other capillary with an array of metallic micrometer or submicrometer tubules prepared by a template approach.

The main objective of the groups involved in the present project is related to making the transition from the simple preparation of nanostructures towards fabricating functional nanostructures , namely of polymer, metallic and complex semiconducting fibers with high application potential. The research which will be performed is channeled in a direction strongly connected to the tendencies at international scale.

COMPLEX LANDSLIDE MONITORING SYSTEM USING TRANSDUCERS BASED ON NEW MATERIALS AND TECHNOLOGIES Call name: Joint Applied Research Projects - PCCA-2011 call, Type 2
PN-II-PT-PCCA-2011-3.2-0975 2012 - 2016

Role in this project:

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA TEHNICA-IFT RA (RO); INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA (RO); UNIVERSITATEA "ALEXANDRU IOAN CUZA" IASI (RO); QUARTZ MATRIX SRL (RO)

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

Project website: http://www.landslide.tuiasi.ro

Abstract:

The project objective is conceiving, design, realization and testing of a complete and complex system devoted to continuously monitoring the displacement under three axes of the geomorfological structures and of other specific parameters in order to detect and monitor landslides by using smart sensors based on special micro and nanostructured materials and advanced information processing techniques. The system is able to automatically acquire data on the filed, locally processing information and storing and remotely data transmitting by means of a wireless sensor communication network to a central server. The system comprises three parts: i) instrumentation part, ii) communication part and iii) data processing and user interface part. The instrumentation part consists of a complex set of new transducers devoted to measure very small spatial soil displacements, pore water pressure, conductivity and temperature at different levels under ground. The communication part is a wireless sensor network working under protocols specially designed for this application. The third part is the database continuously updated available for all users by means of a web interface. The project will have a coordinator and 4 partners from which one is a medium enterprise. The project activities are divided into four phases: the first phase devoted to building the instrumentation part, the second, to laboratory testing and calibration of all sensing devices, the third to system assembly and to realization and testing of wireless sensor network and the fourth to testing the monitoring system on the field working under real conditions. There are previewed a series of concrete deliverables materialized on four new types of sensors, the complex smart transducer, the sensor network, the assembly system ready to be implemented on the field and a database contained date collected on a high natural hazard risk area and a user friendly interface on which people may watch on the web the phenomenon.

Characterization by IBA (Ion Beam Analysis) and other advanced techniques of hydrogen and other light elements in thin films of materials used in nuclear industries Call name: Joint Applied Research Projects - PCCA-2011 call, Type 1
PN-II-PT-PCCA-2011-3.1-1510 2012 - 2016

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH (RO); 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://proiecte.nipne.ro/pn2/139-proiecte.html

Abstract:

The need to characterize hydrogen in materials is very important to many areas including the semiconductor, transportation and nuclear industries. Among all the elements the structure of the H atom is the most simple but its detection and chemical analysis in materials (qualitatively and quantitatively) is anything but simple. H is the most difficult atomic species to analyses with many traditional methods. Because of its low Z, methods based on X ray or Auger emission do not work, and, because of its low Z and mass RBS can not be used. Nuclear physics methods of non-destructive elemental analysis of materials including the determination of hydrogen and its isotopes are now intensively used. Because the concentration and depth distribution of light elements such as H, C, N and O play an important role in many processes, different accelerator techniques such as NRA and resonance reactions have been developed to detect and profile these elements. However, more than one reaction or resonance is needed to profile several elements. For the detection and profiling of H, ERDA is an often used technique.

In this project we propose the construction of a performant experimental setup for the characterization of H isotopes and of other light elements using IBA techniques in thin films of materials used in nuclear industries. The thin films will be also characterized by additional advanced techniques such as SEM,XRD, EDX and FTIR.The materials which will be investigated in this project are composite materials and multilayers structures. These will be produced using a novel deposition technique in plasma (the sequential deposition method) developed recently by the INFLPR partner. Using a combination of MS and PECVD there will be deposited mixtures and multilayered films of W/C, with different elemental concentrations of W, C, H and D(as replacement for tritium), similar with the codeposited layers obtained in the tokamak reactors.

DUAL EMITTERS FOR DISPLAYS BASED ON OLED COMPOUNDS Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0620 2011 - 2016

Role in this project:

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/NationalProjects/idei78_2011/

Abstract:

The main goal of this project is an improvement in OLED technology through a series of elements that leads to a greater stability of OLED’s, eliminating the molecular aggregation phenomena, increasing the lifetime of displays and controlling the charge carriers injection through the following innovations: a) the synthesis of organometallic compounds with dual emission (red and green), b) changing the anode structure by adding ZnO nanowires over the ITO layer, c) the inclusion in the emissive layer of magnetic nanoparticles that leads to an increasing of electroluminescence efficiency by controlling the charge carriers in the OLED device. The nanoparticles acts as traps for the charge carriers. These traps balances the currents of holes and electrons, resulting in an increase of the critical voltage and a significant enhancement of electroluminescence quantum efficiency. The effect of an external magnetic field is to align the spins of magnetic nanoparticles, which increases the fraction of singlets and thus the quantum efficiency via a spin-polarized charge transfer process. The dual emission will be obtained in organometallic compounds with two types of ligands and the ZnO nanowires can be obtained by electrochemical deposition.

A decrease of applied voltages to the OLED devices will be expected.

Eulytite materials to detect radiations Call name:
PN-2, 71-007/2007-2010 2007 - 2010

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NAŢIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA MATERIALELOR - INCDFM BUCUREŞTI

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

Affiliation: INSTITUTUL NAŢIONAL DE CERCETARE-DEZVOLTARE PENTRU FIZICA MATERIALELOR - INCDFM BUCUREŞTI (RO)

Project website:

Abstract:

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