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Thermoelectric power measurements on graphite pencil lead and tracesThermoelectric power measurements on graphite pencil lead and traces

Other Titles
Thermoelectric power measurements on graphite pencil lead and traces
Authors
Gu, DaewonNam, Youngwoo
Issue Date
Nov-2023
Publisher
Korean Physical Society
Keywords
Graphite pencil lead; Graphite pencil traces; TEP measurement techniques; Thermoelectric power (TEP)
Citation
Journal of the Korean Physical Society, v.83, no.12, pp 978 - 983
Pages
6
Indexed
SCIE
SCOPUS
KCI
Journal Title
Journal of the Korean Physical Society
Volume
83
Number
12
Start Page
978
End Page
983
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/68821
DOI
10.1007/s40042-023-00963-y
ISSN
0374-4884
1976-8524
Abstract
Inducing a temperature difference across a conductor causes the generation of an internal electric field owing to the diffusion of carriers from the hotter side to the colder side. This is known as the thermoelectric effect whose origin is the simultaneous transfer of thermal energy and electric charge by the carriers when phonon effects are negligible. In this study, the thermoelectric transport properties were investigated using conventional bulk graphite pencil lead and pencil traces formed by drawing on the alumina plate with the same pencil lead. Two different thermoelectric power measurement techniques—steady-state DC and slowly varying AC—were employed in a single-device setup to systematically examine this phenomenon, demonstrating consistent results. We believe that the thorough verification of thermoelectric power using the two techniques is virtually unique and may provide additional insight into the measurement of elusive thermal transport phenomena emerging from delicate changes in the density of states near the Fermi level in the physics of correlated electrons. © 2023, The Korean Physical Society.
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자연과학대학 (물리학과)
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