The effect of structure on the low-temperature electrical conductivity of carbon nanocomposite temperature sensors

2019 ◽  
Vol 45 (10) ◽  
pp. 1104-1108
Author(s):  
V. V. Vainberg ◽  
A. S. Pylypchuk ◽  
V. N. Poroshin ◽  
Yu. N. Gudenko ◽  
A. S. Nikolenko
Keyword(s):  
Electrical Conductivity ◽  
Low Temperature ◽  
Temperature Sensors ◽  
Carbon Nanocomposite ◽  
Effect Of Structure

Single superconducting quantum interference device multiplexer for arrays of low-temperature sensors

2001 ◽  
Vol 78 (3) ◽  
pp. 371-373 ◽  
Author(s):  
Jongsoo Yoon ◽  
John Clarke ◽  
J. M. Gildemeister ◽  
Adrian T. Lee ◽  
M. J. Myers ◽  
...  
Keyword(s):  
Low Temperature ◽  
Quantum Interference ◽  
Temperature Sensors ◽  
Superconducting Quantum Interference Device ◽  
Superconducting Quantum Interference

Electrical conductivity of low-temperature carbons as a function of frequency

1978 ◽  
Vol 30 (1) ◽  
pp. 87-98 ◽  
Author(s):  
J.C. Giuntini ◽  
D. Jullien ◽  
J.V. Zanchetta ◽  
F. Carmona ◽  
P. Delhaes
Keyword(s):  
Electrical Conductivity ◽  
Low Temperature

ChemInform Abstract: EFFECT OF STRUCTURE ON THE ELECTRICAL CONDUCTIVITY OF SELENIUM

1982 ◽  
Vol 13 (42) ◽  
Author(s):  
K. E. MURPHY ◽  
B. B. WUNDERLICH ◽  
B. WUNDERLICH
Keyword(s):  
Electrical Conductivity ◽  
Effect Of Structure

LOW TEMPERATURE THERMOELECTRIC PROPERTIES AND AGING PHENOMENA OF NANOSTRUCTURED p-TYPE Bi2-XSbXTe3 (x = 1.46, 1.48, 1.52 AND 1.55)

2013 ◽  
Vol 06 (05) ◽  
pp. 1340008 ◽  
Author(s):  
DALE HITCHCOCK ◽  
YEN-LIANG LIU ◽  
YUFEI LIU ◽  
TERRY M. TRITT ◽  
JIAN HE ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Low Temperature ◽  
Thermoelectric Properties ◽  
Optimal Composition ◽  
Ambient Conditions ◽  
Bulk Materials ◽  
The Past ◽  
Aging Phenomena ◽  
P Type ◽  
Cold Pressed

Over the past decade the widely used p-type ( Bi 2-x Sb x) Te 3 bulk thermoelectric materials have been subject to various nanostructuring processes for higher thermoelectric performance. However, these nanostructuring processing were conducted on compositions optimized for bulk materials (x ~ 1.52–1.55). This leads to the question of whether the optimal composition for bulk materials is the same for their nanoscale counterparts. In this work we hydrothermally grew Bi 2-x Sb x Te 3 nanopowders (nominally, x = 1.46, 1.48, 1.52 and 1.55) and measured their thermoelectric properties on cold-pressed vacuum-sintered pellets (74–78% of the theoretical density) below 300 K. The measurements were conducted 18 months apart to probe the aging phenomena, with the samples stored in ambient conditions. We have found that (i) the peak of thermopower shifts to lower temperatures upon nanostructuring but it shifts back to higher temperatures upon aging; (ii) the electrical conductivity degrades by a factor of 1.5–2.3 upon aging while the temperature dependence is largely retained; and (iii) the ZT of freshly made samples is sensitive to the x value, a maximum ZT ~ 1.25(~ 0.62) at ~ 270 K (~ 255 K) was attained in the freshly made sample x = 1.55(x = 1.46), respectively; while the ZT of aged samples is significantly lowered by a factor of 2–4 but lesser x-dependent. These observations have been discussed in the context of charge buildup and compensation at grain boundaries.

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