|
PROJECTS
CONTRACT No BG-RRP-2.017-0001
"LASER METHODS FOR DEVELOPMENT OF SENSORS AND SELF CLEANING SURFACES"
- CONTRACTOR: Institute of Electronics, BAS
- Contract duration - 20.12.2024 - 30.06.2026
See full text in PDF format.
Project of OP „Science and Education for Smart Growth“ "Creation and development of centres of competence" - BG05M2OP001−1.002−0023−C01
BUILDING SUSTAINABLE NATIONAL CENTER OF COMPETENCE "INTELLIGENT MECHATRONICS, ECO- AND ENERGY-SAVING SYSTEMS AND TECHNOLOGIES" (IMEEST)
Beneficients (Project partners):
- Technical University - Gabrovo;
- Technical University - Sofia;
- Central Laboratory of Applied Physics at the Bulgarian Academy of Sciences - Plovdiv;
- Institute of System Engineering and Robotics;
- Sofia University "St. Kliment Ohridski";
- Technical University - Varna;
- Institute of Electronics at the Bulgarian Academy of Sciences.
The funding for the project is provided under Priority Axis 1 "Scientific Research and Technological Development" of Operational program "Science and education for smart growth", co-funded by the European Regional Development Fund.
Terms of implementation of the project: 30 March 2018 − 30 November 2023
See full text in PDF format (in Bulgarian).
Project of OP „Innovation and competitivness“ "Development of an innovative integrated system for personalized diagnosis and treatment of oncological diseases" - BG16RFOP002−1.005−0046
"DEVELOPMENT OF PRODUCT AND PRODUCTION INNOVATIONS" Procedure BG16RFOP002-1.005 under the OP "INNOVATION AND COMPETITIVENESS" 2014-2020.
Beneficients (Project partners):
- Ambulatory for Outpatient Specialized Assistance - "Medical Center for Integrative Medicine OOD"
- Institute of Electronics at the Bulgarian Academy of Sciences.
The funding for the project is provided under the Grant Agreement BG16RFOP002-1.005-0046.
Terms of implementation of the project: 24 months
See full text in PDF format (in Bulgarian).
See also the announcement to the project (in Bulgarian).
Project DN 08-19/14.12.2016 NSFB
"NEW COHERENT AND COOPERATIVE EFFECTS IN HOT ALKALI ATOMS" (2016-2019)
Coordinator: Assoc. Prof. Sanka Gateva, PhD
Read more (in Bulgarian).
Project DNTS/Russia 01/5 (23.06.2017)
"ÍÅËÈÍÅÉÍÀ ÑÏÅÊÒÐÎÑÊÎÏÈß ÍÀ ÏÐÎÑÒÐÀÍÑÒÂÅÍÎ ÎÃÐÀÍÈ×ÅÍÈ ÀËÊÀËÍÈ ÏÀÐÈ: ÌÅÒÎÄÎËÎÃÈß È ÏÐÈËÎÆÅÍÈß"
Coordinators:
- Dr. Stefka Kartaleva (IE-BAS)
- Prof. Tigran Vartanyan Dr.Sc.
Read more (in Bulgarian).
"FORMATION AND PHYSICAL PROPERTIES OF COMPOSITE NANOSTRUCTURES OF METAL OXIDES AND NOBLE METALS"
Coordinator: Assoc. Prof. Anna Dikovska, PhD
Read more.
"LASER-ASSISTED FORMATION OF 3D NANOPARTICLE STRUCTURES AND STUDY OF THEIR OPTICAL PROPERTIES"
Coordinator: Prof. N. Nedyalkov, DSc
Read more (in Bulgarian).
Project: DNTS/Russia 02/3 - 2018-2020
"COMBINED LASER AND ION IMPLANTATION TECHNIQUES FOR NANOSTRUCTURING OF Ag/ZnO COMPOSITES FOR SERS APPLICATIONS"
- Coordinator: Assoc. Prof. Mihaela Koleva, PhD
- Partner organization: Kazan Physical-Technical Institute (Russia)
Read more (in Bulgarian).
Project DO−02−112/2008 "National Center of Excellence on Biomedical Photonics"
RESEARCH INFRASTRUCTURE - NCBP
Read more.
Project: Ä01-151/28.08.2018
"NATIONAL RESEARCH INFRASTRUCTURE FOR OBSERVING ATMOSPHERIC AEROSOLS, CLOUDS AND GAS POLLUTANTS INTEGRATED WITHIN THE PAN-EUROPEAN INFRASTRUCTURE ACTRIS"
Included in the Bulgarian Roadmap for research infrastructure 2017-2023 and supported by the Ministry of Education and Science of Bulgaria
(Agreement ¹ Ä01-151/28.08.2018)
- Coordinator for IE-BAS - Assoc.Prof. Tanja Dreischuh, PhD
Read more.
Project: Ä01-151/28.08.2018
NATIONAL SCIENCE PROGRAM "ENVIRONMENTAL PROTECTION AND REDUCTION OF RISKS OF ADVERSE EVENTS AND NATURAL DISASTERS"
Approved by the Resolution of the Council of Ministers ¹ 577/ 17.08.2018
and supported by the Ministry of Education and Science of Bulgaria
(Agreement ¹ ÄÎ-230/ 06-12-2018).
- Coordinator for IE-BAS - Assoc.Prof. Tanja Dreischuh, PhD
Read more.
Research Infrastructure "ELI−ERIC−BG"
ELI "EXTREME LIGHT INFRASTRUCTURE" is a new research infrastructure of pan-European interest and part of the European roadmap (ESFRI).
Beneficients (Project partners):
- Scientific-research team of the Institute of Electronics - BAS
- Scientific-research team of the Physics Department, Sofia University:
- Scientific-research team of the Institute of Solid State Physics - BAS
Coordinator for ELI-ERIC
Prof. Jean Claude Kieffer - INRS-Canada
Read more
Project 861138 AIMED H2020, 2020-2023
H2020, Marie Skłodowska-Curie Innovative Training Networks (MSCA-ITN)
"ANTIMICROBIAL INTEGRATED METHODOLOGIES FOR ORTHOPEDIC APPLICATIONS" - AIMed
Coordinator for IE-BAS: Assoc.Prof. Albena Daskalova, PhD
Read more
Project KP-06-India/12, NSF, (2019-2021)
REFINING OF HAFNIUM SPONGE BY ELECTRON BEAM MELTING AND OBTAINING OF HAFNIUM TARGETS FOR ELECTRONIC APPLICATIONS
Coordinator - Prof. DSc K.Vutova
SELECTED PROJECTS (2012)
EC-Project EURATOM of FP7 Contract No FU07-CT-2007-00059/Fusion CSA/EURATOM MODELING AND SIMULATION OF GYROTRONS FOR ITER
S. Sabchevski1, M. Damyanova1, I. Zhelyazkov2, P. Dankov2, P. Malinov2, E. Balabanova1, E. Vasileva1 and R. Enikov1
1Emil Djakov Institute of Electronics,
Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria,
Association EURATOM-INRNE
2Faculty of Physics, St. Kliment Ohridski University of Sofia,
5 James Bourchier Blvd., 1164 Sofia, Bulgaria
Association EURATOM-INRNE
Introduction: scope and main activities of the project
As the most powerful sources of coherent radiation operating in a continuous wave (CW) mode in the sub-terahertz frequency range (i.e., with millimeter and sub-millimeter wavelengths) the gyrotrons are considered as indispensable components of the systems for electron cyclotron resonance heating (ECRH) and electron cyclotron current drive of magnetically confined plasmas in various reactors (most notably of the tokamak type) for controlled thermonuclear fusion. Additionally, they are used for startup (ignition), stabilization (e.g., NTM suppression and MHD control) and diagnostics of the plasma. It should also be noted that the gyrotrons are the only sources of RF heating, which can be both localized and steerable.
See full text in PDF format.
REGENERATION OF MATERIALS BY ELECTRON BEAM MELTING AND REFINING OF REFRACTORY METALS AND ALLOYS IN VACUUM Project DO 02/200 financed by the Bulgarian National Science Fund at the Ministry of Education, Youth and Science
K Vutova, V Donchev, V Vassileva, E Koleva and G Mladenov
Emil Djakov Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
The relevance of the problem of fabricating new materials by recycling of scrap by electron beam melting and refining (EBMR) of refractory and reactive metals and alloys is justified by the environmental friendliness of the method and the fact that it enables one to obtain materials with new and improved chemical composition, structure, and properties. The materials thus processed find numerous applications in the nuclear power industry, medicine, space engineering, automotive industry, tool engineering, etc. A sharp increase in the activities on designing, implementating and operating equipment for refractory and reactive metals and alloys by EBMR has taken place in recent years. Large manufacturers in countries such as the U.S., India, China, Russia, France, Germany, have shown particular interest in developing such technologies.
See full text in PDF format.
PLASMON AND OPTICAL PROPERTIES OF METAL NANOPARTICLES AND THEIR APPLICATION TO HIGH-SENSITIVITY RAMAN SPECTROSCOPY AND BIOPHOTONICS Project DO 02/293 funded by the Bulgarian National Science Fund
Project coordinator: Assoc. Prof. Dr. Nikolay Nedyalkov Project period: 2009 - 2012
- Partners:
- Emil Djakov Institute of Electronics,
Bulgarian Academy of Sciences, 72 Tsaridradsko Chaussee, 1784 Sofia, Bulgaria,
Micro and Nanophotonics Laboratory, group leader Prof. Dr.Sc. P. Atanasov
-
- Institute of Experimental Morphology, Pathology and Anthropology,
Bulgarian Academy of Sciences, G. Bonchev Str., bl. 25, 1113 Sofia, Bulgaria,
group leader Dr. R. Toshkova
-
- National Center of Oncology, 1756 Sofia, Bulgaria,
group leader Prof. R. Balanski
Project goals
The objects of investigations in this project were the mechanisms and effects of interaction between the electromagnetic field and noble metal nanoparticles and nanostructures. The main efforts were directed to a detailed description of the optical properties of these structures in the near- and far-field zones. The interest was also focused on two applications of these structures: gold-nanoparticles-assisted cancer-cell photothermal therapy and design of structures for surface enhanced Raman spectroscopy (SERS).
See full text in PDF format.
HIGH RESOLUTION SPECTROSCOPY OF CS VAPOR CONFINED IN -MICRON THICKNESS OPTICAL CELLS
S Cartaleva1, A Krasteva1, A Sargsyan2, D Sarkisyan2, D Slavov1 and T Vartanyan3
1Emil Djakov Institute of Electronics, Bulgarian Academy of Sciences,
72, Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
2Institute for Physical Research, National Academy of Sciences of Armenia,
0203 Ashtarak, Armenia;
3St. Petersburg National Research University of Information Technologies, Mechanics and Optics,
49 Kronverkskiy Blvd., 197101 St. Petersburg, Russian Federation.
Introduction
Laser spectroscopy of alkali vapor contained in optical cells is widely used in various laboratory experiments and photonic devices. Reducing the cell thickness L is of importance not only for optical photonic sensor miniaturization, but it also results in the observation of new phenomena with L approaching the wavelength λ of the irradiating light. Recently, significant efforts have been devoted to the development of miniaturized atomic clocks and magnetometers based on electro-magnetically-induced transparency (EIT) resonances. The EIT resonances have been prepared in Cs atoms confined in cells of sub-millimeter thickness with a high-pressure buffer gas added to prevent frequent collisions of alkali atoms with the cell walls, which destroy the atomic coherence. The EIT resonance contrast measured in such cells is similar in magnitude to that obtained in centimeter-size cells, but a substantially higher laser intensity is needed when sufficient buffer-gas pressure is used. The buffer gas broadens the optical transitions, which limits the pumping efficiency and compromises the performance of vapor cell clocks and magnetometers. A promising strategy for increasing the atom-light interaction time consists in the use of anti-relaxation-wall coated cells. However, the atomic-vapor density is limited owing to coating degradation with the temperature.
See full text in PDF format.
AEROSOLS, CLOUDS AND TRACE GASSES RESEARCH INFRASTRUCTURE NETWORK (ACTRIS)
Research Infrastructure Action of the FP7 Capacities Specific Program for Integrating Activities, Grant Agreement # 262254
D Stoyanov, I Grigorov, Z Peshev, A Deleva, G Kolarov, N Kolev, Tz Evgenieva, E Toncheva and T Dreischuh
Emil Djakov Institute of Electronics, Bulgarian Academy of Sciences, 72, Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
ACTRIS (Aerosols, Clouds, and Trace gasses Research InfraStructure Network) is a European Project aiming at integrating European ground-based stations equipped with advanced atmospheric probing instrumentation for aerosols, clouds, and short-lived gas-phase species. ACTRIS has an essential role in supporting the acquisition of new knowledge and in solving issues related to climate changes, air-quality, and long-range transport of pollutants. ACTRIS is building the next generation of the ground-based component of the EU observing system by integrating three existing research infrastructures EUSAAR, EARLINET, CLOUDNET, and a new trace-gas network component into a single coordinated framework. ACTRIS is funded by the European Community - Research Infrastructure Action of the FP7 Capacities Specific Program for Integrating Activities under ACTRIS Grant Agreement No. 262254. The project started on 1/4/2011 for a four-year period.
See full text in PDF format.
IMPROVING THE RESOLUTION OF THOMSON SCATTERING LIDARS BY APPLICATION OF NOVEL DECONVOLUTION-BASED ALGORITHMS EC-Project EURATOM of FP7 Contract ¹ FU07-CT-2007-00059/Fusion CSA/EURATOM
Stoyanov D1,3, Dreischuh T1,3, Gurdev L1,3, Vankov O1,3 and Protochristov Ch2,3
1Emil Djakov Institute of Electronics, Bulgarian Academy of Sciences,
72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
2Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences,
72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
3EURATOM-INRNE Fusion Association, 72 Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
Investigatory goals
Effective observation and control of the fusion process is only possible when based on effective plasma diagnostics involving the determination with high accuracy and (spatio-temporal) resolution of the electron temperature Te and concentration ne and of the pressure P in the torus. Thomson scattering (TS) methods are routinely used for measuring plasma temperature and density in fusion devices, but the only tokamak to have a LIDAR variant of this diagnostic is the Joint European Torus (JET), Culham, UK. The TS lidar approach is based on the remote sensing of the plasma with an intense laser pulse and on the detection of the backscattered light from the plasma electrons. It allows one to obtain simultaneously the Te and ne profiles along a lidar line of sight (LOS) through the torus core. This diagnostic has been successfully used for reliable measurement of Te and ne profiles at JET and is intended to be used in ITER. The investigations performed are of great importance for the ITER LIDAR development as JET is the only place in the world where this measurement technique can be tested.
See full text in PDF format.
DEVELOPMENT AND INTRODUCTION OF OPTICAL BIOPSY SYSTEM FOR EARLY DIAGNOSTIC OF MALIGNANT TUMORS Contract #DMU-03-46/2011 Project financed by the National Science Fund
E Borisova
Emil Djakov Institute of Electronics, Bulgarian Academy of Sciences, 72, Tsarigradsko Chaussee, 1784 Sofia, Bulgaria
- Project Coordinator:
- Assoc. Prof. Dr. Ekaterina Georgieva Borisova.
- Project team members:
- Irina Angelova Bliznakova, PhD student, IE-BAS;
- Aleksandra Zhivkova Zhelyazkova, PhD student, IE-BAS;
- Momchil Dimitrov Keremedchiev, PhD student, Queen Giovanna - ISUL University Hospital;
- Liliya Plamenova Angelova, IE- BAS.
- Project terms: 2011-2013.
- Web-site: http://www.ncbp.ie-bas.org/Projects.htm
- 1. Main objectives
- Development and optimization of optoelectronic instrumentation and methodology for optical biopsy and their approbation and introduction into the clinical practice for early diagnosis of malignant tumors of the skin and mucosa.
- Optimization of fluorescent and reflective diffuse spectroscopic techniques for obtaining maximum diagnostic accuracy in identifying the main types of malignant neoplasias in dermatology and gastroenterology.
- 2. Specific project objectives
- To achieve a maximum diagnostic accuracy in identifying the main types of malignant neoplasias in dermatology and gastro-enterology. To apply the developed 1-D and 2-D systems for spectroscopic analysis to local measurement of the spectral characteristics and the topography of skin and mucosa tumors, and to intraoperative monitoring of tumor excisions (surgical removal) allowing precise determination of the tumor borders and metastasized cells in tissue and adjacent lymph nodes.
See full text in PDF format.
COHERENT OPTICS SENSORS FOR MEDICAL APPLICATIONS (COSMA) Project financed by the EC (7th FWP) Duration of the project: 2012 - 2016
- Project Partners:
- 1. University of Siena - Department of Physics - Italy
- 2. Swansea University - College of Human and Health Sciences - UK
- 3. University College London - Department of Physics and Astronomy - UK
- 4. Bulgarian Academy of Sciences - Institute of Electronics - Bulgaria
- 5. Bar-Ilan University - Department of Chemistry - Israel
- 6. Jagiellonian University - Department of Physics - Poland
- 7. National Academy of Sciences of Armenia - Institute for Physical Research - Armenia
- 8. Siberian Branch of Russian Academy of Sciences - Institute of Automation and Electrometry - Russia
- 9. University of Calcutta - Department of Physics - India
- 10. University of California at Berkeley - Department of Physics - USA
The Project aims to develop a class of optical atomic magnetometers (OAMs) specifically designed for medical applications, namely: direct detection of magnetic fields from the human body through real-time and/or multichannel magnetocardiography; detection of signals in ultra-low-field nuclear magnetic resonance (NMR) and in magnetic-resonance imaging (MRI). The project is being implemented with the participation of ten research groups from Italy, the United Kingdom, Bulgaria, Israel, Armenia, Russia, India, Poland and the USA.
See full text in PDF format.
OTHER ONGOING PROJECTS
Project under the "Centers of Excellence in Scientific Research"
financed by the National Scientific Fund of Republic of Bulgaria
Total support: 1.7 Million BGN
- Consortium:
- Institute of Electronics (IE) - Basic organization,
- Institute of Organic Chemistry (IOCh),
- National Oncology Center (NOC) - Specialized Hospital for Active Treatment,
- University Hospital (UH) "Tsaritsa Ioanna".
- Project Leader:
- L. Avramov, PhD
- Research Team:
- E. Borisova IE,
- A. Tacheva Daskalova IE,
- A. Gisbreht IE,
- I. Bliznakova IE,
- D. Petkov IE,
- I. Tsakova IE,
- D. Dogandjiiska IE,
- D. Stoyanov IE,
- T. Dreischuh IE,
- L. Gurdev IE,
- O. Vankov IE,
- Dr. P. Troyanova NOC,
- Dr. E. Pavlova NOC,
|
- Dr. N. Hadjiyolov NOC,
- Dr. V. Draganov NOC,
- Dr. M. Shindov NOC,
- Dr. B. Vladimirov UH "QG",
- Dr. V. Atanasov UH "QG",
- Dr. I. Terziev UH "QG",
- Dr. R. Ivanova, UH "Alexandrovska",
- B. Tchorbanov, IOCh,
- V. Mantareva IOCh,
- I. Angelov IOCh,
- P. Pavlova, TU-Sofia - Plovdiv Branch,
- Dr. K. Koev UH "Alexandrovska",
- A. Tcherveniakov Hospital"Pirogov",
- V. Kussovski IMb.
|
Main Project Topics:
- Tissue optics
- Medical imaging (spectroscopy, topography, tomography)
- Photodynamic and nano-medicine
- Instrumentation and implementation
Based on the modern economic theory of the competitiveness of the nations, a program was developed in IE-BAS for creating a new high-technology market niche, namely, Laser Medicine. It was awarded the first prize of the Bulgarian Academy of Sciences' competition "Bulgaria in 21st Century. Promising Market Niches and Related Research Activities" The research in this field comprises the study of the optical properties of biological tissues and of the interaction of light and laser light with biological structures and the development on this basis of diagnostic the therapeutic techniques and equipment.
In order to achieve the above goals, a new scientific research laboratory was established in IE-BAS that has at its disposal multifunctional experimental equipment for studying the photophysical characteristics of human and other biological tissues, in particular, for acquiring and analyzing fluorescence, reflection and absorption spectra in the UV, visible and near IR ranges on different time scales.
The research team of the laboratory completed systematic in vivo and in vitro research cycles on the optical properties of human tissues. The changes were registered occurring in the auto-fluorescence and reflectance spectra due to pathological processes. The main lesions were classified with respect to their optical characteristics. Diagnostic methods and algorithms were developed for the analysis of benign and malignant lesions in the skin and other tissues based on their fluorescence and reflection properties. The results were published in over 100 scientific reports in specialized journals, proceedings and chapters in monographs.
A family was developed of novel light and laser light diagnostic and therapeutic techniques and devices. Most of them have successfully passed technical and clinical tests and have been introduced in the medical practice of Bulgaria's healthcare network. Using them, more than 1000 surgical and therapeutic procedures have been performed on patients with over 50 types of ailments with exceptionally high clinical effect. The remarkably high medical and social significance was thus proved of the laser techniques and equipment developed.
Apart from the above, information, including telemedical, systems were developed with the purpose of the efficient dissemination and application of the laser diagnostic and therapeutic methods.
In the past few years in IE-BAS, more than 40 diploma works (for the BS degree) and one PhD thesis in the field of Biomedical Photonics were completed and successfully defended; training courses were also organized for medical personnel working with laser equipment. Currently, several undergraduate and graduate students are working on topics in the field considered.
The base team of the project proposed has created a wide network of international relations with scientists from more than 20 countries in Europe and the Commonwealth of Independent States, which have been formalized in several contracts, including under the EU Framework Programs. Activities on topics of the field of the Center proposed are carried out under ongoing projects with research institutions in the United Kingdom, Germany, Italy, Romania, India, and Russia.
The research teams established and operating under these contracts have acquires experience in all fields of activities envisaged in he project proposed, namely, tissue optics, image diagnostics, photodynamic medicine, and their applications.
A main priority of the research team is participation in national and international research networks. The fruitful cooperation with the GIS Transfer Center has resulted in the preparation and submission in 2007 - 2008 of two projects under the 7th FP of EU. A project was also submitted under the "Research for the Benefit of SME" Program of EU.
In March 2007, following the initiative of members of the team of the Center proposed, Bulgaria joined the newly established European Platform for Photodynamic Medicine".
The present project is a logical continuation in the development of the research capacity of the existing structure, both in terms of human resources and of physical research infrastructure.
The main effort will be focused on expanding and updating the experimental equipment with respect to spectral and temporal measurements. In what concerns the spectral techniques, the existing equipment covers the electromagnetic spectrum from the UV to the near IR ranges; while the temporal resolution techniques extend cover c.w. to picosecond processes. By the end of the three-year period the Center will achieve experimental and thematic completeness by means of the equipment capacity expansion envisaged in the project to the IR range and femtosecond processes, as well as by including Raman and LIDS spectroscopic techniques.
The human resources will be developed in conjunction with and in relation to the improvement of the research infrastructure. By way of opening new employment positions and graduate studies opportunities, the possibility will be created for the Center of Excellence's adequate functioning as a sustainable and self-perfecting unit that will corresponds to, and in some aspects exceeds, the average level of the European laboratories in the field in question.
PLASMON AND OPTICAL PROPERTIES OF METAL NANOPARTICLES AND THEIR APPLICATION IN HIGH SENSITIVITY RAMAN SPECTROSCOPY AND BIOPHOTONICS
Project TK01-103 financed by the National Scientific Fund of Republic of Bulgaria
Terms: 2009-2011 Total support: 240 kEUR
- Project Leader:
- N.N. Nedialkov, Ph.D.
- Research Team:
- P.A. Atanasov,
- M.E. Koleva,
- A.Og. Dikovska,
- A.S. Nikolov,
- St.D. Donchev,
|
- S.E. Imamova,
- E.L. Pavlov;
- I.G. Dimitrov,
- N.E. Stankova,
- D.R. Milev,
- Ts.G. Naidenova,
- R.B. Rangelov.
|
Objectives:
The objects of investigation of the scientific project are the mechanisms and effects of interaction of the electromagnetic field with noble metal nanoparticles and nanostructured objects, their optical properties, the characteristics of the electromagnetic field in the near field in the vicinity of these structures, their plasmon properties and applications.
Partners:
- Gas Lasers and Laser Technologies Laboratory at the Acad. E. Djakov Institute of Electronics, Bulgarian Academy of Sciences (IE-BAS);
- Specialized Hospital for Active Treatment of Cancer (SHATC), Sofia, Bulgaria;
- Immunology Department at the Institute of Experimental Pathology and Parasitology, Bulgarian Academy of Sciences (IEPP-BAS).
Main scientific goals of the project
Investigation of the characteristics of the plasmon resonance and related optical properties of noble metal nanoparticles and nanostructured objects; study of the dependence of the particle and nanostructured objects parameters, properties of environment and the incident irradiation on their optical properties.
Description of the properties of the electromagnetic filed in the near field zone in the vicinity of noble metal nanoparticles and of two and three dimensional nanostructured objects; determination of the influence of the nanoobjects parameters, properties of environment and the incident irradiation.
Development of a method for fabrication of metal nanoparticles and nanostructures based on laser ablation.
Application of the unique properties of noble metal nanoparticles in the field of precise molecular analysis and biophotonics; in vitro experiments on tumor cells lines (human and mouse) for estimation of the toxic effect of using nanoparticles; in vitro experiments with normal cells for assessment of the immune reaction due to application of gold nanoparticles. In vivo treatments of tumors in animals using a photothermal effect mediated by gold nanoparticles.
Expected results
- Revealing the fundamental physical basis of the interaction between an electromagnetic field and noble metal nanoparticles and nanostructures.
- Describing the optical and plasmon characteristics of noble metal nanoparticles and nanostructures.
- Practical application in biophotonics and the area of high-sensitivity material analysis. Obtaining results with high social impact.
NEW MAGNETIC AND MAGNETO-ELECTRIC MATERIALS FOR THE NEW GENERATION OF ELECTRONIC ELEMENTS (DO 02-224)
Project under the "Promotion of Scientific Research in Priority Fields" financed by the National Scientific Fund of Republic of Bulgaria
Terms: 2009-2011 Total support: 500 kBGN
- Project Leader:
- K. Krezhov, Dr.Sc.
- Research Team:
- I. Nedkov,
- T. Koutzarova,
- S. Kolev,
- V. Pencheva,
- S. Penchev,
- L. Slavov,
- P. Lukanov,
- R. Kakanakov,
- D. Kovacheva,
- T. Ruskov,
- N. Trendefilova,
|
- I. Spirov,
- V. Antonov,
- I. Georgieva,
- S. Kovachev,
- P. Krastev,
- H. Penchev,
- P. Tzvetkov,
- Tz. Lazarova,
- A. Zaleski,
- R.E. Vandenberghe,
- E. Svab,
- A. Alons.
|
Project objectives
The multifunctional composite materials are promising in view of the development of novel devices characterized by reduced energy consumption and environmental impact. The main project objectives are preparation, characterization and comprehensive study of new magnetic and magneto-electric oxide materials. To this end, chemical substitutions will be employed to optimize the materials' properties, together with theoretical modeling of the electronic bonds. Techniques will be applied for synthesis of bulk and of thin-film samples, such as co-precipitation, sol-gel, ignition synthesis, spray pyrolysis, thermal and e-beam evaporation, magnetron sputtering, electric-arc deposition. Another objective is acquiring structural information on the effect of the synthesis on the structural relations responsible for the transport properties and of other manifestations of the electronic structure. Phase transitions will be explored in near- and long-range order in view of clarifying the relationships between the local structural deformations and the global magneto-electric properties. Techniques such as X-ray and neutron diffraction and Mössbauer spectroscopy will be employed, together with optical, magnetic and electric measurements. These will be performed in cooperation with leading laboratories in the field of synthesis and characterization of materials. The project will promote the transfer of knowledge to the industry and the development of novel materials and technologies.
Results expected from the project implementation
Mastering of modern numerical techniques and applying them to the modeling of the properties of magnetic and magneto-electric materials; development of ways of preparation of stable materials with reproducible properties; contributions to the field of fabrication of novel bulk and thin-film materials with various sizes of the constituting particles; determining the effect of atomic substitutions on characteristic (critical) temperatures - ferroelectric, ferromagnetic, anti-ferromagnetic - of magnetic and magneto-electric materials studied during the project implementation; revealing the particle size effect on the structural parameters and electric, optical and magnetic properties of the materials studied; establishing clear functional dependencies of changes in optical radiation properties caused by magnetic transitions; verifying the reliability of various theoretical models predicting the materials' structure and properties; clarifying the relationships between the techniques of synthesis and the materials' structural and morphological parameters.
THICK FERRITE FILMS PREPARATION BY
DEPOSITION IN A MAGNETIC FIELD
Project under the Bilateral Scientific Cooperation between Republic of Bulgaria and Republic of Slovenia - DO 02-99 financed by the National Scientific Fund of Republic of Bulgaria
Terms: 2009-2011 Total support: 28.8 kBGN
- Project Leader:
- T. Koutzarova, Ph.D.
- Research Team:
- I. Nedkov,
- S. Kolev,
- Ch. Ghelev.
Project objectives
The increasing exploitation of microwave frequencies for telecommunications has stimulated the expansion of civil applications to mm-waves. Nonreciprocal devices, such as circulators, are irreplaceable parts in highly efficient microwave modules for telecommunication systems. Among the several types of ferrites, hexaferrites are the only materials suitable for mm-wave applications. The anisotropic crystal structure of BaFe12O19 results in high saturation magnetization and high magentocrystalline anisotropy with anisotropy field. The ferromagnetic resonance of BaHF occurs at around 50 GHz, which makes it suitable for mm-wave applications and optimum properties are predicted for magnetically oriented thick films.
The main goal of this project is to obtain knowledge for the preparation of magnetically oriented thick films. We intend to study the deposition of BaHF particles in the presence of a magnetic field. The idea is to exploit the magnetism of the BaHF particles and the driving force of an applied magnetic field for controlled deposition of the particles. Among the project objectives is optimizing the processes parameters, starting from the synthesis of nanosized BaHF particles, to stabilizing them in a liquid carrier, to orienting them by applying an external magnetic field.
Expected results
The main result of the implementation of the present project has to do with forming the basis for the development of a novel technology for the fabrication of high-quality magnetic thick films of, in particular, barium hexaferrite, that are suitable for advanced applications in the mm-range of the electromagnetic spectrum, such as communications and information technologies. It is envisaged that the following scientific goals be achieved:
- knowledge on the preparation of monodispersed monodomain nanosized particles of barium hexaferrite;
- knowledge on the stabilization of these particles in solutions, i.e., on the preparation of stable suspensions by way of establishing the necessary process parameters;
- knowledge on the magnetic field distribution during the deposition process when magnetic field sources of various shapes and size are used;
- knowledge on the mechanism of deposition of monodomain nanosized BaFe12O19 particles on various substrates;
- knowledge on the preparation of magnetically oriented thick BaHF films;
- knowledge on the electromagnetic properties of the films thus prepared.
ORIENTED BaFe12O19 LAYERS FOR MICROWAVE ELEMENTS
Post-doctoral research project No DO 02 343 financed by the National Scientific Fund of Republic of Bulgaria
Terms: 2009-2011 Total support: 49.9 kBGN
- Project Leader:
- C.M. Kolev, Ph.D.
Project objectives
The main driving force for this project, besides the considerably lower cost of the equipment necessary in comparison with the well known physical techniques, is the growing interest to hexaferrite films applications in telecommunications. The present project is important from the viewpoint of the development of new, simple and inexpensive solution of the problem of fabricating oriented films of BaFe12O19 (BaHF). The objective of the project proposed is the preparation of magnetically oriented BaHF thick films by means of using magnetophoretic deposition (MPD) in an external magnetic field. Suspensions must be prepared for this purpose that will remain stable during the MPD process. The suspensions' stability is affected by a number of factors, such as the particles' concentration, size, shape, and surface potential, as well as by the viscosity and polarity of the liquid carrier and the type of stabilization. The project implementation will include optimizing the process parameters, from preparing the suspensions to designing the magnet-cell system necessary for conducting the MPD. The overall project objective is acquiring new knowledge on BaHF particles' stabilization in a liquid carrier and on the mechanism of the particles' deposition and orientation in a magnetic field. The project's final phase will consist in assessing the oriented films' microwave properties in view of possible applications as microwave elements.
Results expected from the project implementation
The main project results expected are preparation of thick oriented BaHF films and assessment of their applicability as microwave components. The results of the separate projects stages are expected to be:
Preparation of stable suspensions of BaHF particles;
Preparation of oriented BaHF films;
Knowledge on the influence of the magnetic behavior of hard magnetic nanoparticles on the suspensions' stability and knowledge on the relationship between the suspensions' stability and the quality of the films prepared by using MPD;
Knowledge on the microwave properties of oriented films prepared by using MPD and on their applicability.
|