Pustovalov A.A. STATUS AND PROSPECTS OF APPLICATION OF RTGS IN SPACE.
Institute of Dynamics of Geosphere of the Russian Academy of Sciences.
Russia. 2007, No.3.- p.7-14.
Brief review of RTG application for research of planets and deep space
in conditions, where the use of solar batteries because of large remoteness
from the Sun is inefficient, is surveyed. More than 40-years experience of RTG use in space
has shown their obvious advantages: high reliability and long service life, construction
compactness, stability of parameters irrespective of external conditions and light level.
The significance of RTG application for space missions of the 21st century is emphasized,
especially in the probes, landed on surface of planets of the Solar system (rovers, autonomous
stations, etc.).
Bulat L.P. SOLID-STATE COOLING SYSTEMS. Saint-Petersburg State University of Low-Temperature
and Food Technologies. Russia. 2007, No.3.- p.15-21.
Unconventional solid-state methods of cold products are considered. Comparative analysis
of cooling methods provides a way to expect that in the future the solid-state cooling machines will
gradually replace traditional coolers first in electronic elements thermal stabilization systems,
and later on in everyday life and industry.
Anatychuk L.I., Luste О.J., Nitsovich О.V. COMPUTER RESEARCH ON THE TRANSVERSE
THERMOEMF IN A THREE-LAYER THERMOELEMENT WITH PERIODIC.ALLY PROFILED SURFACE.
Institute of Thermoelectricity, Chernivtsi, Ukraine. 2007, No.3.- p.22-28.
Computer model of a new type of a three-layer thermoelement with periodically
profiled surface has been developed. It allows finding the temperature, current
density and electric potential distribution in thermoelement working medium and
determining its efficiency and thermoEMF which is transverse to temperature
gradient. Optimization of thermoelement geometry and transverse thermoEMF has been made.
Chernysh V.V., Cuamba B.C. THERMOEMF IN L1–Δ1 MODEL OF GERMANIUM. Eduardo
Mondlane University, Maputo, Mozambique. 2007, No.3.- p.29-44.
The theoretical investigation of thermoEMF in elastic and uniaxially deformed P║[001]
n-Ge has been realized. In this case at high pressure the conduction band
structure of germanium becomes similar to that of uniaxially deformed P║[001]
silicon, allowing to study the characteristics of the valleys and
peculiarities of electron scattering. The calculation of the thermoEMF
caused by the electron’s diffusion and electron-phonon drag has been
done, taking into account the interband scattering of electrons between
the L1- and Δ1c-valleys and f- and g- scattering of electrons in Δ1c - valleys.
The anisotropy of the termoEMF has been considered before and after the
inversion of the L1↔Δ1c valleys.
Casian A. PROSPECTS OF THE THERMOELECTRICITY BASED ON ORGANIC MATERIALS.
Technical University of Moldova, Chisinau, Rep. of Moldova.
2007, No.3.- p.45-51.
A significant increase of thermoelectric figure of merit is predicted
in some highly conducting quasi-one-dimensional organic crystals. This increase can be
achieved due to the capacity of these materials to unite together the diversity of
physical properties of organic compounds and the growth of the density of electronic
states typical for quasi-one-dimensional quantum wires. The highest calculated up to
now values of the thermoelectric figure of merit at room temperature in such materials
are presented.
Siniavskiy E.P.1, Solovenko V.G.1, Nikolaeva А.А.2,
Konopko L.А.2, Huber Т.Е.3 INVESTIGATION OF THERMOPOWER IN BISMUTH
QUANTUM WIRES. 1 - Institute of Applied Physics, Academy of
Science of Moldova, Chisinau, Republic of Moldova, 2 - Institute of
Electronic Engineering and Industrial Technologies, Chisinau, Republic of Moldova, 3 -
Department of Chemistry, Howard University, Washington, USA. 2007. No.3.- p.52-56.
Kerner Ia.I. NUMERICAL ANALYSIS OF THE THERMOELECTRIC SENSORS FOR INFRA-RED RADIATION
BASED ON BISMUTH, ANTIMONY AND Bi-Sb ALLOYS. Institute of Electronic
Engineering and Industrial Technologies, Academy of Sciences of Moldova, Chisinau, Moldova.
2007. No.3.- p.57-62.
Calculation and optimization of parameters for thermoelectric sensors of infra-red
radiation based on bismuth, antimony and Bi-Sb alloys were realized. Sensitivity, time
constant and noise equivalent power (NEP) of those sensors were determined at different
conditions. It was fulfilled the comparative analysis of sensors based on wires or films.
Both advantages and disadvantages of corresponding structures were discussed. The obtained
results were compared with experimental data received in Academy of Sciences of Moldova (ASM)
and literature data. This comparison confirms a good quality and perspective of studied structures.
А.А.Snarskii1, М.I.Zhenirovskyy2. PERCOLATION EFFECTS IN THERMOELECTRIC
DISORDERED TWO-PHASE MEDIA. 1 - National Technical University of Ukraine “KPI”,
Kyiv, Ukraine; 2 - N.N.Bogolyubov Institute for Theoretical Physics, Kyiv, Ukraine).
2007. No.3.- p.63-79.
Critical review of the properties of thermoelectric two-phase disordered media close to
percolation threshold is presented. Applicability of various approximations in the determination
of critical behaviour of effective thermoelectric coefficient and figure of merit is discussed.
The unsolved problems are considered.
M.A. Korzhuyev, L.D. Ivanova, Yu.V. Granatkina. COPPER STABILITY IN BISMUTH AND ANTIMONY
CHALCOGENIDES. A.A. Baikov Institute of Metallurgy and Materials Science, Moscow, Russia.
2007. No.3.- p.80-85.
The analysis of the nature of copper instability in thermoelectric materials based
on bismuth and antimony chalcogenides (BACh) is carried out and the basic lines of work
for prevention of sample “aging” are outlined.
А.О. Druzhynin, І.P. Ostrovsky, Yu.R. Kohut. THERMOELECTRIC PROPERTIES OF Si-Ge WHISKERS.
“Lvivska Polytekhnika” National University, Lviv, Ukraine. 2007. No.3.- p.86-90.
The purpose of this work consists in the investigation of thermoelectric properties
of Si1–xGex (x=0.01÷0.11) whiskers in the temperature range of 4.2–500 K. Characteristics of whiskers
with boron concentration close to metal-dielectric transition were measured from the dielectric side of
transition. Temperature dependences of the Seebeck coefficient for whiskers with different resistivity
(ρ=0.01÷0.05 Ohm cm) were investigated. It was determined that the Seebeck coefficient generally weakly
grows with temperature increase. Angular coefficient α(Т) depends on the doping level of whiskers. The
value of α is about 1 mV/K that is promising for their application as elements of temperature sensors.
To determine the efficiency of such sensor, thermoelectric figure of merit Z of whiskers was defined.
Depending on the doping level, thermoelectric figure of merit of whiskers makes up ~(12)÷10–4K–1 in
the temperature range under investigation. Thus, the results obtained make it possible to conclude that
heavily doped Si-Ge (x = 0.01–0.1) whiskers can be used for producing sensors of cryogenic and higher
than room temperatures.
L.I. Anatychuk, R.G. Cherkez. PERMEABLE THERMOELECTRIC COOLING ELEMENT USING THE JOULE-THOMSON EFFECT.
Institute of Thermoelectricity, Chernivtsi, Ukraine. 2007. No.3.- p.91-102.
Physical model of cooling thermoelement utilizing a combined action of thermoelectric effects
and the Joule-Thomson effect is represented. Methods for calculation of temperature distribution,
determination of energy characteristics of power conversion and thermoelement design under maximum
coefficient of performance are described. Results of computer investigation of such thermoelements
for the case of using Bi2Te3 material for thermoelement legs are presented. It is shown that rational
use of thermophysical and electric operating conditions of thermoelement allows increasing coefficient
of performance by 60–100 % as compared to traditional thermocouple elements.