BrainMap

Mr. Petru Palade

Dr.

Senior researcher 2-nd degree - INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA MATERIALELOR BUCURESTI RA

Researcher

Web of Science ResearcherID: not public

Curriculum Vitae (04/10/2019)

Expertise & keywords

New methods of diagnosis and treatment: current challanges abd technologic solutions based on nanomaterials and biomaterials Call name:
PN-III-P1-1.2-PCCDI-2017-0062 2018 - 2020

Role in this project: Key expert

Coordinating institution:

Project partners: (RO)

Affiliation:

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); and (v) (bio)sensors for monitoring the bioavailability of pharmaceutical compounds and detecting the reactive oxygen species and their biologic effect. 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:
PN-III-P1-1.2-PCCDI-2017-0871 -

Role in this project: Key expert

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

Project partners:

Affiliation:

Project website:

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

High energy efficient permanent magnets without rare-earth elements Call name: Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-0971 2014 - 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); UNIVERSITATEA BABES BOLYAI (RO); PurTech SRL (RO)

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

Project website: http://www.infim.ro/projects/high-energy-efficient-permanent-magnets-without-rare-earth-elements

Abstract:

This project aims at producing, characterizing and optimizing the magnetic properties of a new class of permanent magnets with high energy efficiency based on iron nitride Fe16N2 with martensite structure. Theoretical predictions for this permanent magnet indicate a maximum energy product (BH)max of up to twice the theoretically maximum allowed for the highest performance magnet up to date, namely Nd2Fe14B. The project addresses a theme that became an imperative of global research and development activities taking into account the tremendous increase of the price of rare earths. It follows a multi-disciplinary approach to the problem. Theoretical calculations based on density functional theory are used for choosing optimal doping elements (transition metals and non-metals) of Fe16N2 which show a favourable effect on increasing thermodynamic stability and also in magnetic properties improvement, i.e. increase of magnetization (via population of sublattices presenting ferrimagnetic configuration) and anisotropy. Simulations of the Fe16N2 magnetic particles embedded in matrices will allow us directing preparation methods in order to obtain magnetic particle size and morphology suitable for enhanced coercivity and high remanence magnetization. Several preparation routes will converge on the obtaining of the compound Fe16N2 and other similar. A first route of preparation uses wet chemical methods that allow obtaining Fe16N2 doped particles. Firstly, it will be obtained the iron oxide or iron oxy-hydroxide precursor with controlled morphology and size using different chemical methods in solution. Subsequently, by thermal treatments of the iron oxide or oxy-hydroxide precursors in hydrogen and ammonia atmosphere one gets Fe16N2 fine magnetic particles with needle-like or ellipsoidal shape that show an important shape anisotropy and high coercivity. The second procedure is to obtain nanocomposites based on Fe16N2 by ball milling the iron powders and doping elements under hydrogen and nitrogen/ammonia reactive atmosphere. Processing of the milled composites and Fe16N2 magnetic particles doped with transition metals and non-metals will be performed using a glove box with controlled atmosphere in order to avoid the exposure to oxygen and moisture from air. Procedures for mixing with binder, orientation in applied magnetic field, pressing and sintering for long time at temperatures below 200 0C will allow to obtain anisotropic permanent magnets based on Fe16N2 with high coercivity and remanence magnetization. The energy product of this magnet will be higher than that of cheap magnets that do not contain rare earth. The magnetic particles and final sintered magnets will by characterized by X-Ray diffraction, neutron diffraction, electron microscopy. Iron-containing phases will be analyzed by Mossbauer spectroscopy. A complex characterization of the magnetic properties (hysteresis, saturation and remanence magnetization, coercivity) will be performed. Optimization of the magnetic properties will assume a permanent feedback between preparation methods – structural / compositional characterization – magnetic properties. The magnets will be coated against corrosion. The new innovative technologies used to produce these magnets will be the subject of patent application. The main outcome of the project, after performing the project activities, will be the permanent magnet without rare earth, which has higher energy product than cheap commercial magnets. A part of the results, which are not subject to patenting, will be disseminated through ISI publications and communications at international conferences.

Advanced approach of magnetic relaxation Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0425 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/projects/advanced-approach-magnetic-relaxation

Abstract:

The project proposes a suite of tools and methodologies for a comprehensive characterization of the magnetic response and the magnetic relaxation process in real systems of interacting non-identical nanoparticles, to be applied in different domains (from biomedical applications to nanoelectronics and spintronics). The accomplishment of the project objectives will lead to a deeper knowledge of relaxation mechanisms in nanosized magnetic systems and to derived possibilities of controlling the relaxation process. It will be taken into consideration composition and stoichiometry, phase structure, size distribution, morphology, couplings among magnetic entities and surface effects in the attempt to correlate the mechanism of relaxation to all and every specific parameter related to nanosystems. Theoretical and experimental approaches will be developed and permanently corroborated. A new possibility for adjusting the magnetic relaxation of nanoparticulate systems via molecular control over distances between particles and surface ligands through a new class of bio-inspired architectures is also proposed. Ways to develop self-assembly approaches for the controlled encapsulation of magnetic nanoparticles in viral protein cages are envisaged. The tuning of magnetic relaxation through inter-particle interactions or by increasing the anisotropy energy of each particle via non-spherical shapes or intra-particle interfacial couplings in core-shell configurations, will be considered.

New vitreous magneto-optical materials applied in optoelectronics Call name: Joint Applied Research Projects - PCCA-2011 call, Type 2
PN-II-PT-PCCA-2011-3.2-0348 2012 - 2016

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU OPTOELECTRONICA INOE 2000 INCD

Project partners: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU OPTOELECTRONICA INOE 2000 INCD (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); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO); PRO OPTICA SA (RO)

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

Project website: http://movitopt.inoe.ro/

Abstract:

The project intends to develop the research into materials with a high magneto-optical effect used as magnetic field sensors and optical isolators. Glass materials are of interest for these applications because they are transparent in the visible and near infrared spectral region and can be readily formed into complex shapes. One of the magneto-optical effects, the Faraday effect in glass will be investigated. The primary trend of the study is to develop glass compositions having a large specific Faraday rotation and low absorption in the visible and near infrared regions.

In the frame of the project, new vitreous materials containing transition, post transition and rare-earth ions will be investigated as good Faraday rotators that should satisfy certain requirements as: low absorption at the laser wavelength, low birefringence and high homogeneity.

An other direction of research will be focused on diamagnetic glasses as magnetic field sensors (via magneto-optical effect) with small size, immunity to noise and a high speed response. Both of these applications require temperature insensitivity over a broad temperature range. From this point of view, diamagnetic glasses are chosen for the sensing element with high stability and their temperature dependence which is much less than that of paramagnetic materials. The magnetic field sensors will be obtained as thin films by sol-gel and PLD methods.

The vitreous magneto-optical materials as bulk and thin films will be optical, structural and magnetic characterized (UV-Vis-NIR, FTIR, Raman, fluorescence spectroscopy, elipsometry, testing of magneto-optical parameters and magnetic characteristics, thermo-mechanical parameters, scanning electron microscopy).

New complex hydrides for hydrogen storage in hydride tank suitable for vehicular applications Call name:
PN-II-72196 / 2008 2008 - 2011

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 PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO); INSTITUTUL DE CHIMIE FIZICA - ILIE MURGULESCU (RO)

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

Project website:

Abstract:

The project promotes and develops technologies capable to generate innovative mixed complex hydrides with very good storage properties mainly due to the special microstructure but also due proper compositions. A demonstrative hydride tank which exploits the optimized material, will be built and special designed for mobile (vehicular) applications. The project subscribes to the general tendency concerning the pollution and green house effect diminishing. The activities will be twofold. The main activity concerns the synthesis of a conglomerate/ mixture of new complex hydrides having special microstructure and in consequence optimized storage properties. Metal hydrides work at room temperature, but the reversible absorbed/desorbed (abs/des) hydrogen content by weight (wt%) is very low (2 wt% H2) while the classical complex hydrides with catalysts additions can reach a reversible storage of 4.5 wt% at 150 deg C. The project envisages the synthesis of a material, based on mixture of complex hydrides, which contain at least 6 wt% H and the release temperature in the range of 200-230 deg C. Taking into account the previous experience of the teams and based on the most recent literature data, the most promising systems are: (i) mixtures boranates/ metal hydrides (with more than 10 wt % H2), in what case the aim is to decrease the release temperature (now of about 400 deg C) (ii) amides/ metal hydrides mixtures, in which case by suitable mixtures (complex systems) will increase the H content by weight (now of about 5 wt%). Very recent preparation routes will be used for these materials: impregnation from hydride solutions into light mesoporous matrix (functionalized support), co-impregnation of the mixed hydride solutions together with catalyst, co-milling of the insoluble hydrides together with soluble hydrides impregnated on supports. This will generate the decrease of the kinetic barriers for the solid state hetereogeneous reactions (between the two components of the mixture) from which hydrogen is generated and implicitly the diminishing of the hydrogen releasing temperature. New type of materials will be prepared: boranates of Ca and Mg modified with transitional metals (TM), mixed boranates as Li-(TM, Si, Al) and mixed systems boranates/hydrides/Si or amides/hydrides/Si with more than 6 wt % H2 and decomposition temperatures around 200 0C. Quantum chemical calculations will be used for the prognosis of new materials stability and for the optimization of the compositions hydrides/ mesoporous supports. As a corollary of the main direction, finally is settled the design and realization of the demonstrative complex hydrides tank which will valorize the improved storage properties of the optimized material (patent protected).

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