This article is cited in 4 papers

XVI International conference ''Thermoelectrics and their applications" - 2018 (ISCTA 2018), St. Petersburg, October, 2018

Miniaturized heat-flux sensor based on a glass-insulated Bi–Sn microwire

L. A. Konopko^a, A. A. Nikolaeva^a, T. E. Huber^b, A. K. Kobylianskaya<sup>a

a</sup> Ghitu Institute of Electronic Engineering and Nanotechnology, Chisinau, Republic of Moldova
^b Department of Chemistry, Howard University, Washington, USA

Abstract: Thermoelectric-energy conversion based on a single element made of an anisotropic material is considered. In such materials, the heat flux generates a transverse electric field. We fabricate an experimental heat-flux sensor (HFS) sample consisting of a 10-m-long glass-insulated single-crystal tin-doped bismuth microwire (outer diameter $D$ = 18 $\mu$m, microwire diameter $d$ = 4 $\mu$m). The microwire is wound into a flat spiral after recrystallization in a strong electric field, during which the main crystallographic axis $C_3$ is oriented at the optimum angle with respect to the microwire axis. The sensor sensitivity reaches 10$^{-2}$ V/W with the time constant $\tau\approx$ 0.2 s. The sensor fabrication technology is rather simple and reliable for industrial applications.

Received: 20.12.2018
Revised: 24.12.2018
Accepted: 28.12.2018

DOI: 10.21883/FTP.2019.05.47560.18

 English version: Semiconductors, 2019, 53:5, 662–666

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