72, Tzarigradsko chaussee Blvd., 1784 Sofia

Tel: (+359 2) 875 80 61, Fax: (+359 2) 975 36 32,

URL: http://www.issp.bas.bg

BULGARIAN ACADEMY OF SCIENCES

GEORGI NADJAKOV INSTITUTE OF SOLID

STATE PHYSICS

STRUCTURE

Division THEORY

THEORETICAL DEPARTMENT Research Group COLLECTIVE PHENOMENA

Division MATERIAL PHYSICS

Lab ELECTRON-PHONON INTERACTIONSLab CRYSTAL GROWTH AND STRUCTURAL METHODSLab BIOCOMPATIBLE MATERIALS

Division NANOPHYSICS

Lab PHOTOELECTRICAL AND OPTICAL PHENOMENA IN WIDE BAND GAP SEMICONDUCTORS Lab SEMICONDUCTOR HETEROSTRUCTURЕS

Division MICRO - AND ACOUSTOELECTRONICS

Lab PHYSICAL PROBLEMS OF MICROELECTRONICS Lab ACOUSTOELECTRONICS

Division LOW TEMPERATURE PHYSICS

Lab LOW TEMPERATURE PHYSICS Lab ENVIROMENTAL PHYSICS Supporting unit CRYOGENIC TECHNOLOGY

Division PHYSICAL OPTICS AND OPTICAL METHODS

Lab OPTICS AND SPECTROSCOPY

Division SOFT MATTER PHYSICS

Lab LIQUID CRYSTALS Lab BIOMOLECULAR LAYERS

Division LASER, ATOMIC, MOLECULAR

AND PLASMA PHYSICS

Lab ATOMIC SPECTROSCOPY Lab METAL VAPOUR LASERS Supporting units OPTICS AND GLASS BLOWING

Applied research unit MOLECULAR BEAM EPITAXY Innovation Department

Education Department

Research Center Physical Properties of Materials, Surfaces and Structures

Museum on History of Physics in Bulgaria

ISSP IS SEEKING A NEW WAY FOR A BRIGHTER FUTURE

MAKING BREAK-TROUGHS IN SCIENCE AND TECHNOLOGY

Since its establishment in 1972, ISSP has provided a basic science support to theemerging Bulgarian microelectronics and solar energy utilization. Two independentinstitutes were nucleated from ISSP, the Institute of Microelectronics and the CentralLaboratory of Solar Energy and New Energy Sources. We played a leading role in condensed matter physics, laser physics, theory of solid state, theory of phase transitions, superconductivity and superconducting materials, low temperature physics,liquid crystal physics, physics of living matter, structure and properties of crystals andamorphous materials, atom and plasma physics, acoustoelectronics and micro-electronics. We provided valuable research results in energy, the environment, nationaldefense, materials, healthcare, integral and functional microelectronics. We sharedthese results with universities and industry nationwide. We have also been successfulin training new talents on both national and international level.

Today, as members of the European Research Area, we are looking for a newfuture in the country's transition to knowledge-based economy and in the globalizationand convergence of technologies.

Our commitment remains to continuing innovation and upholding the vision of thescientists who have established ISSP 40 years ago. We are determined to stay a leading national institute in the condensed matter theory, physics of new materials,nanophysics, micro- and acoustoelectronics, low temperature physics, physical opticsand optical methods, soft and living matter physics, laser, atomic, molecular and plasma physics. We also wish to find our proper and deserved place in the scientific establishment of United Europe and the world. To this aim, we are actively involved inthe global academic research and industrial collaboration.

ISSP with its longstanding reputation and depth of experience is a valuable assetfor Bulgaria, and can be a driving force for its economic growth. First steps as the formation of a business incubator for SME business have already been done by us. Itis a long way ahead that will lead us to new break-troughs in science and technologyfor the benefit of our knowledge-based society.

Prof.Alexander G. Petrov, DSc, member of BAS

3

The Institute of Solid State Physics (ISSP) was founded in 1972 with the aim to develop

fundamental and applied research in the fields of microelectronics, acoustoelectronics, low

temperature physics, superconductivity, optics and spectroscopy. Important scientific results were

obtained. The achievements of the Institute became the fundament for the development of the

Bulgarian microelectronic industry. Throughout the years ISSP grew up covering new modern

areas like liquid crystal physics, soft and living matter physics, nanophysics. Today ISSP is a

leading centre in Bulgaria in the field of condensed matter physics, optics, spectroscopy and laser

physics.

The scientific staff now (2012) includes 101 persons (2 academicians, 13 professors, 50

associate professors and 34 assistant professors). 17 have DSc degree and 66 have PhD degree.

Mission of the Institute: achievement of fundamental knowledge in the condensed matter

physics, optics, spectroscopy and laser physics; application of this knowledge for the creation of

new materials, devices and analytical methods for micro- and nano-technologies, as well as for

new approaches in the interdisciplinary fields of the physics with biology, medicine, archaeology;

transfer of the achieved results to the economy of Bulgaria.

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MISSION

HISTORY

Academician Georgi Nadjakov(1896-1981)Discovered the photoelectretstate of matter (1937)

GEORGI NADJAKOV INSTITUTE OF SOLID STATE PHYSICS

ISSP has a steady experience in education of young scientists, PhD students and post docs,

both from Bulgaria and other countries. Every year about 10 students prepare their MSc theses

in the Institute and some of them continue their education as PhD students. The Institute

disposes distinguished specialists and has the potential for preparation and supervising PhD

theses in the following 6 disciplines: Physics of plasma and gas discharge; Atom and molecular

physics; Physics of wave processes; Structure, mechanical and thermal properties of condensed

matter; Electric, magnetic and optical properties of condensed matter; Biophysics.

Scientists from ISSP lecture and work with students in the Universities of Sofia, Plovdiv, and

Blagoevgrad, as well as in the Technical University - Sofia. Some of them are also invited to give

lectures at universities and institutes abroad.

ISSP participates in many contracts funded by the European Union and NATO (Euroatom,

Eureka), as well as in projects for cooperation with universities and research institutes from

Germany, France, Italy, USA, UK, Austia, Australia, Switzerland, Greece, Serbia, Macedonia,

Rusia, Poland, Hungary, Romania, Belgium, Slovenia, etc. Scientists from the Institute perform

successfully their investigations in the International Centre for Theoretical Physics in Trieste,

Joint Institute for Nuclear Research in Dubna, Forschungszentrum Rossendorf and International

Laboratory of High Magnetic Fields and Low Temperatures in Wroclaw, Poland.

The fruitful cooperation results in 39 joint research projects for 2011, 28 of them within the

academic bilateral cooperation.

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INTERNATIONAL COLLABORATION

The main scientific and applied achievements of the Institute are in the field of condensed

matter theory, critical phenomena and phase transitions, superconductivity and superconducting

materials, low temperature physics, microelectronics and acoustoelectronics, nanophysics, liquid

crystal physics, living matter physics, structure and properties of crystals and amorphous

materials, atom and plasma physics, nonlinear, integrated and fibre optics, metal vapour lasers.

ISSP participates successfully in many programs funded by the European Union and NATO. The

research areas and topics of the Institute fit the national and EU research priorities, namely: new

materials, nanoscience and nanotechnologies, information and communication technologies,

environment, energy and health.

The scientific production of the Institute for 2011 includes over 140 papers in prestigious

international journals like Physical Review Letters, Monthly Notices of the RAS, Optics Express,

Applied Physics Letters, Physical Review, Laser Physics Letters, New Journal of Physics, Optics

Letters, Journal of Raman Spectroscopy, Journal of Physical Chemistry, Plasma Processes and

Polymer, Journal of Applied Physics, IEEE Journal of Quantum Electronics, Journal of Physics,

European Physical Journal, European Biophysical Journal, Surface Science, Thin Solid Films,

Physics Letters, Progress in Crystal Growth, Sensor and Actuators, Chemistry and Physics of

Lipids. The citations for 2011 are over 900.

Every second year since 1980, the Institute organizes at the Black Sea coast an International

school-symposium on contemporary problems in condensed matter physics (ISCMP).

RESEARCH

EDUCATION

Head: Prof. Hassan CHAMATI, DSc

Research topics: superconductivity, magnetism, phase transitions and critical phenomena,

superfluidity and BEC, nonlinear phenomena and solitons in condensed media, optical pulses in

nonlinear systems and waveguides, application of statistical physics to economics, social networks

and biological problems, modeling of materials.

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THEORY

ТЕОРИЯ

Model of a stable metallic superparamagnetic nanoparticle.

Such nanoparticles may be used for diagnostics in biology

and magnetic storage in modern technology.

The human organism is an integrated network where

complex physiologic systems, each with its own

regulatory mechanisms, continuously interact, and a

failure of one system can trigger a breakdown of the

entire network.

The free energy of model system of interacting fermions

(elementary particles) abundant in synchrotrons and

condensed matter.

Monographs and scientific articles on

condensed matter theory, statistical physics

and mathematical methods in physics.

Resonance transmission (a), trapping (b) and

reflection (c) of soliton pulses in nonlinear

inhomogeneous media (optical, molecular,

magnetic) as a function of the length of the

inhomogeneity. Possible application area:

nonlinear optics, biomolecular dynamics,

self-localization etc.

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MATERIAL PHYSICS

Method of LLS process HA/DND composites HA structure

Head: Prof. Marin GOSPODINOV, DSc

Laboratory “Crystal Growth and Structural Methods”

Research topics: crystal growth using Czochralski, Bridgman, high temperature solutions and gasphase methods; preparation of crystals from complex oxides compounds as ferroelectrics,multiferroics, semiconductors and topological insulators; investigations on the structure,electrical, dielectrical, optical and magnetic properties of the crystals, study of the carbonnanotubes properties.

Experimental research on the crystal growth processes. Determination of the structure offerroelectric and multiferroic crystals.

Determination of the influence of different dopants on the phase transitions of relaxorferroelectric crystals.

Study of the magnetic and ferroelectric phase transitions in multifferoic crystals.Theoretical and experimental research of carbon nanotubes.Study of the conditions for crystal growth of topological insulator crystals: Bi2Se3, Bi2Te3,

Bi2(Se,Te)3, Bi2Se:Sb. Bi2Se3:Mg.

Laboratory “Electron-Phonon Interactions”

Research topics: Experimental and theoretical investigations on electromagnetic field-matter interactions, sensors for different applications.

The sensors are quick, highly sensitive, small, reliable and cheap, detect impurities, reactions,defects, surface structures, liquid levels, changes in fluids and raw materials, electricalcharacteristics such as type of conductivity; semiconductor properties, etc.

Аpplications experimentally tested by us up to now are: visualizing the shape of producedsurface structures; contactless characterization of semiconductors; remote retrieval ofinformation for a solid object and its displacement.

Sensors for the octane factor of gasoline, level-meter without moving parts, deposition ofCaCO3, chemical composition testing of samples, counterfeit coins, absorbing filters for gases andliquids, testing of drinking water, foods, details for the industry, incoming raw materials, etc.

Laboratory “Biocompatible materials”

Research topics: Nanobiocomposites: new materials for bone implants, Biocompatible materials:obtaining composite layers on solid substrates, Development of the method - interferometry withwhite light for studying thick and rough coatings of HA and HA-DND composite layers.

Nanostructured coatings are obtained, using innovative technology, which includes lasertreatments of the substrate surface, immersed in simulated body fluid (SBF) and nanodiamondparticles (DND) and the results is growth of composite layers HA/DND (method of laser-liquid-solid-interaction, LLSI, process).

Obtaining of nanostructured composite coatings, using plasma polymerized hexamethyldisiloxane (HMDS).There are 2 patents on Nanobiomaterials theme (№ 107247 и № 6408).

Head: Prof. Diana NESHEVA, DSc

Research topics: preparation of thin films, multilayers and nanoheterostructures including low-

dimensional crystalline and amorphous semiconductor materials; synthesis of chalcogenide

glasses; investigations of the structure, optical and electrical properties of the produced materials,

deep levels in semiconductors, radiation effects, and mechanical stress in the prepared structures.

Preparation of SiOxNy by plasma immersion N+ ion implantation in Si wafers by varying the

ion fluence and post-implantation annealing duration. Shallow silicon oxynitride layers of

adjustable structure, composition and thickness are prepared with potential for specific

applications.

8

NANOPHYSICS

Surface image of a nano-

crystalline film from In2S3obtained by a Multimode

Atomic Force Microscope (AFM).

Three-dimensional AFM surface

image of a nano-crystalline

ZnCdSe thin film.

Cross-section electron

micrograph of a

c-Si/Si-SiO2/SiO2 structure.

Ion profiles before and after

high temperature annealing.

The FTIR and SE

results, as well as the

SRIM-based modeling

allow identifying the

layers as nano-structured

silicon-rich SiOxNy films

with low N content.

Potential applications of the investigated materials: in ionizingradiation and gas detection,electronic and optical informationstorage, optoelectronics,telecommunications, etc.

Bulgarian patent № 65971/09.09.2010 “Metal-isolator-siliconstructures and method for theirproduction” for application innon-volatile memories.

Temperature evolution of

the photoluminescence

spectrum of 1.8 mol%

Er2S3 - doped Ge-S-Ga

glass.

Refractive index dispersion of

SiOxNy, layers grown in N+

implanted Si at 1050°C in dry O2.

Head: Prof. Elena ATANASSOVA, DSc

Research topics: physics and technology of metal-oxide-silicon structures, thin dielectric,

semiconductor, magnetic and metal layers for the modern nano- and microelectronics; Si

dielectric interface microsystem; microelectronic silicon sensors technology, micromashining,

microelectronic gas sensors, magnetotransistors, magnetoresistors; excitation and propagation of

acoustic waves in condensed matter; materials for acoustoelectronics; acoustoelectronic elements

and devices in communications; acoustoelectronic sensors; calibration and certification of

elements and devices for temperature measurements.

One-dimensional analytical model suitable for interpretation of current-voltage characteris-

tics of large scale cells under illumination is developed.

Two-step annealing technology for double-layer SiO2-Si nanocrystals/SiO2 gate dielectric,

suitable for application in non-volatile memory devices is developed.

Multi-channel generator (4-40 MHz) with acoustic resistance up to 120 Ohm is developed for

piezoelectric microsensors.

Parameters of quartz temperature sensors (up to 250° C) are optimized.

Surface properties modification of thin films of Al2O3, ZrO2, Ta2O5 under the action of stem

cells is established.

Active layer as sensor element for detection of N2O, based on the Si-QCM structure, is

developed.

Plasma polymers and composite films on quartz resonators are synthesized as a sensing

elemen for detection of ammonia and humidity.

9

MICRO- AND ACOUSTOELECTRONICS

Si wafer (1/2, 3 inch) withmemory capacitors based onhigh-k dielectrics. Eachpicture corresponds to 4capacitors with differentgate area (10-4-10-3 cm2).

Test board with the

DSBAR filter as used in

VCO prototype. The

DSBAR device in the

center occupies a space of

0.03 mm3.

Memory capacitors basedon doped high-k dielectric(Al:Ta2O5; Hf:Ta2O5) fornanoscale dynamic memories are developed.Technology for obtaininghigh-k layers, ZrAlO;ZrSiO, with equivalentoxide thickness less than 1 nm satisfying the requirements for next generation dynamic memories is optimized.

A novel very low noise 1.5 GHz voltage controlled oscillator (VCO)with 3 % tuning bandwidth using asubminiature two-pole dielectricallystacked bulk acoustic resonator(DSBAR) is developed.

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Head: Prof. Nikolay TONCHEV, DSc

Research topics: condensed matter physics, theoretical studies of phase transitions (classical and

quantum) and critical phenomena in various physical systems, materials properties at low

temperatures (4.2 K - 400 K) and high magnetic fields up to 9 T, magnetic materials and

phenomena in bulk samples and thin films, superconductivity, new materials for superconducting

fusion magnets (Euratom project), composite materials, environmental physics, modeling and

interpretation of eco-physical systems, evaluation and analysis of energy effectiveness,

cryogenics, liquefaction of gases.

LOW TEMPERATURE PHYSICS

Monographs and books on Theory of critical phenomena in finite size systems; Energy dissipation insuperconducting materials; Synergetics, chaos, order and self-organization; Enviromental physics.

Automated furnace Carbolite with vacuumsystem for samples synthesis.

Results from cluster analysis of environmentalpollution near large industrial center.

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PHYSICAL OPTICS AND OPTICAL METHODS

Head: Prof. Svetoslav RASHEV, DSc

Research topics: thin layer and surface integrated optics, planar waveguides; optical fibres, in-fibre Bragg gratings as refractometric sensor elements; holographic diffraction grating; micro-and nanophotonics; quantum optics; optics, spectroscopy and elecrooptics of thermotropic liquidcrystals; multyphoton processes, nonlinear optics; linear and nonlinear laser spectroscopy ofcomplex organic molecules including biomolecules; theoretical methods in molecular physics.

Experimental and theoretical studies on Vertical Emission Semiconductor Lasers (VCSEL);Theoretical studies on the working mode of the combination VCSEL + photonic crystal;Theoretical studies on the effect of soliton formation on the operation of VCSELs.

Self-organized relief

Resonancediffractiongratting

Cylindricaldiffarctiongrating

The texture of the chiral

smectic CG phase in the

nanocomposite achiral

hydrogen bonded LC

(7OBA) - CNTs

Two-dimensional diffraction of

nematic with short range

smectic C order

Experimental setupfor recording Ramanwaveguide spectrum

Mode spectrum of aproton exchangeLiNb waveguide

New integral optical Max-Zender modulator

Fundamental and applied studies on various aspects of the fabricationand operation of holographic diffraction gratings:

Integrated optics research activities involve the development of technologiesfor planar and strip waveguides,elements and devices based on them;fundamental material science studies on their properties; studies on the mechanisms responsible for the waveguide formation.

The mixtures of mesogenic (liquid crystals-LCs) and nonmesogenic materials (carbon nano-tubes-CNTs) are promising nanocomposites, able to create a new stage in the LC-displaytechniques development. The nanocomposite-achiral hydrogen bonded LC (heptyloxyben-zoic acid-7OBA)-CNTs, manifests a new chiral ferroelectric LC phase CG, with unique elec-trooptical properties. The nematic with short range smectic C order (for 7OBA) in the regimeof electro-convectivity manifests an electrically driving two-dimensional diffraction grating.

Head: Prof. Alexander PETROV, DSc, member of BAS

Research topics: physical properties of thermotropic and liotropic liquid crystals, ferroelectric

and polymer liquid crystals, model lipid membranes and biomembranes; basic research and

application in the field of soft and living matter physics: bilayer lipid membranes and

biomembranes, ultrathin molecular layers on solid substrates, smectic and lyotropic systems,

nanostructured liquid crystals, surface liquid crystal physics.

First optical observation

of phase transition from

non-chiral to chiral phase

of synthetic lecithin.

Chiral gel phase at 35.5°C.Non-chiral fluid phase at 61.3°C.

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SOFT MATTER PHYSICS

Monograph – “The Lyotropic State of Matter:

Molecular Physics and Living Matter Physics”.

Dry red wine. Semidry red wine.

Experimental

equipment for

studying the

elastic properties,

both stretching

and bending, of

model membranes

and monolayers.Fluorescence and phase contrast

microscopy. Flickering spectroscopy with

stroboscopic illumination of the samples.

Micromanipulation of lipid vesicles and

emulsion drops.

Optical method for

quality testing of wines.

Alexander G. Petrov is awarded the

Freedericksz Medal of the Russian Liquid

Crystal Society.

13

Head: Prof. Nikola SABOTINOV, DSc, member of BAS

Research topics: research and development of new laser systems, manipulation and control of

laser beam parameters; laser beam interaction with matter; low energy atomic interactions;

processes and coherent phenomena in low temperature gas discharge plasma.

The developed apparatus and methods can be

applied for remote element control in real time

during the process of new material synthesis or

other technological processes, as well as for

diagnostics of environment pollution or wasted

industrial zone contaminations.

LASER, ATOMIC, MOLECULAR AND PLASMA PHYSICS

Second harmonic generation in

three-component telluride glass.

The atom cooling experimental set-up (the

temperature of the atoms ensemble is about

100 K, collected in a cloud with diameter 1 mm

containing about 10 million Rubidium atoms).

Quantum optics – manipulation of ensembles of laser

cooled atoms, transfer of quantum information;

manipulation of the quantum ensembles by

arbitrary-shaped composite pulses.

New materials – characterization and assessment of the

nonlinear optical properties of multi-component glasses;

laser modification of the macroscopic glass matrix

symmetry and formation of crystalline domains in the glass

to achieve quasi synchronism and generation of second

harmonics in glass matrix.

Archaeometry – interdisciplinary

investigations for diagnostics,

restoration and conservation of cultural

heritage: multi-element quantitative

and qualitative analysis, LIBS and LIF

diagnostics, laser cleaning.

а) b)

с)

Portable LIBSCAN system; LIBS

analysis in situ: outdoors

(a,b) and in museum hall (c).

Laser cleaning (a) of marble (b) and corroded

metal by CuBr (c) and YAG (d) lasers.

а) b)

с) d)

Head: Assoc. Prof. Vasil LOVCHINOV, PhD

Research topics: Using modern apparatus: Atomic Force Microscope, Physical Properties

Measurement System, Scanning Electron Microscope and High-Temperature Infrared Camera,

measurements in the fields of material science and ecology are carried out: materials for

electronics, micro-electro-mechanical systems (MEMS), semiconductors, biomaterials and

polymers, as well as nano-manipulations and nanolithography are put into practice.

Measurement moduleprofile

Vacuum space

Cooling cover

Sample “puck”

Sample insertion tool

Connector (12-pin)

Sample size -

17 х 10 х 5 mm

Thermal transportThermal conductivitySeebeck coefficientThermoelectricityThermal capacityMicrocalorimetryRelaxation technique

Temperature controlTemperature interval 1.9 300 K

Temperature control precision - 0.01K

Smooth temperature change - 0.01K

Magnetic field control High homogeneity of the magnetic field up

to 9 Т - 0.01% - in a volume of 5.5 x1,0 cm

Longitudinal field - 9.0 Тesla

High efficiency; Low noise; Bipolar power

supply to the magnetic field up to

150 Amps.

MagnitometryAlternating current (АС)Direct current (DС)Magnetic susceptibilityTransport propertiesElectricResistance (АС & DС)Critical current 2,0 АHall effectV/A characteristics

Properties of the

Atomic Force

Microscope

Multimode V

(Veeco).

Equipment PPMS-9 (Physical

Properties Measurement

System) for investigation of

the temperature and magnetic

dependence of the magnetic

susceptibility, thermal capacity

and electric conductivity in the

temperature interval 1.9 K to

300 K and magnetic fields up

to 9 Т.

.

.

Two scanners:

Resistant to liquids scanner -

scanned area 10μm x 10μm XY; 2.5μm Z

Feedback scanner for precise measurements

of large surfaces suitable for nanolithography,

nano-indentation, force modulation and etc. –

scanned area 120 μmx 120μm XY; 15μm Z

Sample size - maximal diameter 1 cm,

thickness up to 5 mm

CENTER FOR INVESTIGATION OF PHYSICAL PROPERTIES OF MATERIALS,

SURFACES AND STRUCTURES

14

High temperature sensitivity – 0.08°C 30°C

Wide temperature interval (-20°C to 350°C)

with 2% or 2°C accuracy

Focal plane array detector 240 x 180 pixels

IR resolution (43,200 pixels)

Interchangeable lens with 1X-2X

continuous ZOOM

Manual/automatic focus camera with laser pointer,

3.5" multifunction Touch Screen LCD display

and 120° swivel lens

Built-in 3.1 megapixels visible light digital camera

with videolamp

Scalable picture-in-picture (PIP),

differential temperature (Delta T),

voice annotation copy to USB and

IR Windows correction

METERLiNK™ wireless communication

SD card slot for image storage

(>1,000 radiometric JPEG images)

Secondary electronic emission

Back scattered electrons

Imaging of qualitative differences

in the elemental composition

Accelerating voltage – 5. – 25 kV

Maximal enlargement – 100 000 Х

Maximal lateral resolution – 10 nm

.

.

Scanning electron

microscope (SEM)

Jeol T-200 for the

surface morphology

imaging of solid state

samples and

biological objects.

High-Temperature

Infrared Thermal

Imaging Camera

(FLIR T200).

The camera allows

measurements of

the thermal energy

expenses for final

users on regional

and municipal

infrastructure

aiming increase of

the energy

efficiency.

15

GEORGI NADJAKOV INSTITUTE OF SOLID STATE PHYSICS

72, Tzarigradsko chaussee Blvd., 1784 Sofia

Tel: (+359 2) 875 80 61, Fax: (+359 2) 975 36 32,

URL: http://www.issp.bas.bg

Director:

Professor Alexander G. Petrov, DSc, member of BAS

tel.: 875 80 61, 979 5792

director@issp.bas.bg

Deputy Directors:

Professor Kiril Blagoev, DSc

tel.: 979 5790

kblagoev@issp.bas.bg

Professor Isak Bivas, DSc

tel.: 979 5725

bivas@issp.bas.bg

Scientific Secretary:

Associate Professor Marina Primatarowa, PhD

tel.: 979 5785

prima@issp.bas.bg

Chairman of the Scientific Council:

Professor Nicholay Tonchev, DSc

tel.: 979 5702

tonchev@issp.bas.bg