BrainMap

Maria Poienar

- INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA

Researcher

Curriculum Vitae (23/10/2019)

Expertise & keywords

Improved multifunctional crednerite type oxides: from magnetism to catalysis Call name: Projects for Young Research Teams - RUTE -2014 call
PN-II-RU-TE-2014-4-2179 2015 - 2017

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA

Project partners: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA

Affiliation: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA

Project website: http://cremm.icmct.ro/

Abstract:

Layered 3d metal ABO2 oxides have recently attracted a lot of interest due to their variety of properties. Continued efforts are made to study such transition metal oxides ABO2 especially for oxygen insertion, essential in many applications, such as energy conversion, oxygen sensing or oxygen storage. Among these multifunctional materials, the crednerite Cu1+xMn1-xO2 solid solution presents rich physics and promising applications. Considering its complexity, the aim of this project is to give more information about the impurity effects (oxygen excess/nonstoichiometry, substitution with nonmagnetic elements) upon the relationship structures/properties in these materials. Our study will be a step forward in understanding the stability of these materials and even a possibility of tuning their properties.

Advanced research regarding development of fast method and techniques for pesticides detection from food chain Call name: Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-0826 2014 - 2017

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA

Project partners: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA; INSTITUTUL NATIONAL DE CERCETARE- DEZVOLTARE PENTRU MICROTEHNOLOGIE - IMT BUCURESTI INCD; UNIVERSITATEA BUCURESTI; ECONIRV SRL

Affiliation: INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA

Project website: http://pesti-senz.icmct.ro

Abstract:

Pesticide pollution of the environment is an actual acute problem, with expansion on a global scale and tends to rise. These contaminants are released into the air, water and soil from where are taken by organisms. By ingestion, organophosphorus pesticides get in human and animal body where they cause serious diseases such as irreversible damage to the immune system, cancer, genetic disorders. For the safety and security of the population, devices and advanced techniques for pollutants detection and monitoring in food and agriculture, are necessary.
The project PESTI-SENZ meets these needs and proposes the development of micro-biosensors based on lead-free piezoelectric materials, undoped and doped with different ions (Na, K, Bi, Zr) with selective properties and high sensitivity for the detection and monitoring of pesticides in agriculture and food.
Piezoelectric biosensors are being increasingly investigated because such devices allow direct label-free biological detection by monitoring target molecules in real time.
Detecting and tracking the compound of interest is very important in order to study the function and behavior of biological systems. In this sense, the purpose of PESTI-SENZ project is to get the environment friendly piezoelectric materials (lead free) and deposited to different substrates in order to be used to build FBAR-type piezoelectric arrays microsensor, functionalized with sensitive biomolecules for detection of organophosphorus compounds in aqueous media.
The main objective of the project is films and membranes obtaining based on piezoceramic materials free lead, in order to make devices for analysis and detection of biochemical compounds using innovative laboratory processes and technologies. The specific objectives of the project will pursue solving important theoretical and experimental issues which will contribute to the development of micro-sensors devices which incorporates demonstrator device based on new nanocrystalline piezoceramic with similar characteristics like PZT, and will provide guarantee of a safe exploitation environment.
Methodologies, materials and techniques used in project take into consideration requirements and international standards regarding environmental protection, avoiding the potential damage of property, natural resources, research staff and population health.
The project research team aims to merge skills and complementary expertise of consortium partners, to develop innovative technologies to achieve high efficiency for a sensing device with global applications.
The original aspects of the project, partners expertise combined to achieve a specific aim correlated with the current needs of modern society, provides the foundation for national research network consisting of multidisciplinary teams capable to collaborate synergic and complementary to exploit the extensive research results designed to lead to the realization of a device to ensure safe operation without adverse effects on human health.
Also we propose that the scientific and technical results that we obtain to bring added value to national and international scientific and, as well economic value at least at the national level in the first stage.
Scientific and technical activities carried out within the project by the consortium members will be widely disseminated among national and international scientific community through scientific papers, participation in specialized scientific conferences, patents, presentations at meetings of business people.

Influence of temperature and high pressure on the structural and physical properties in Fe-based Charge Order systems Call name: Joint Research Projects Romania-France - IDROFR-2011 call
PN-II-ID-JRP-RO-FR-2011-2-0056 2011 -

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE – DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA TIMISOARA

Project partners: INSTITUTUL NATIONAL DE CERCETARE – DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA TIMISOARA; Laboratoire de Cristallographie et Sciences des Matériaux UMR CNRS 6508

Affiliation: INSTITUTUL NATIONAL DE CERCETARE – DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA TIMISOARA

Project website:

Abstract:

This project deals with the preparation and the study of iron based oxides (in form of poly- and single-crystals) presenting charge ordering, combining the +2 and +3 iron oxidation states. Indeed, charge ordering in transition metal oxides is a fundamental parameter for obtaining original magnetic and/or electric properties. That was largely shown within the framework of the studies on colossal magneto-resistance in manganese perovskites and it again seems at the origin of the ferroelectricity in CaMn7O12 or LuFe2O4.

Our project breaks up into several sections:
- We chose to revisit the systems of “iron borates and phosphates” presenting iron mixed valences on the basis of literature and of our experience of solid state chemists in this field, to highlight unusual properties (in which multiferroicity).
- The second research orientation is more creative and relates to the exploration of new systems, always on a “Fe, P, B, O” basis, to obtain new compounds of which we will characterize the structures and the properties.
- The (structural and properties) evolution of materials will be followed versus temperature, magnetic field and also high pressure. Not only this last factor allows obtaining new phase diagrams, but it can lead to the stabilization of new crystalline “buildings”, and thus to new properties. This effect was already illustrated in a convincing way in the case of charge order compounds, with the appearance of an irreversible structural transition in LuFe2O4. A broad panel of techniques of laboratory and large scale facilities will be implemented for the most detailed and complete possible description of the structural, micro structural and physical properties of our materials.
- The purpose of this crystallo-chemistry work of is to establish relationships between the structures and the (magnetic and electric) properties of our compounds. This has as much interest from the fundamental point of view as for the optimization of the properties for potential applications.

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