Liquid metal contact as possible element for thermotunneling

Liquid metal contact as possible element for thermotunneling

We investigated a possibility of application of liquid metal contacts for devices based on thermotunneling. Electric and thermal characteristics of low wetting contact Hg/Si, and high wetting contacts Hg/Cu were determined and compared. We got tunneling I-V characteristics for Hg/Si, while for Hg/Cu...

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Veröffentlicht in:arXiv.org 2008-07
Hauptverfasser: Tavkhelidze, Avto, Taliashvili, Zaza, Leri Tsakadze, Jangidze, Larissa, Nodari Ushveridze
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Sprache:eng
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Casting
Current voltage characteristics
Electric contacts
Resistance
Silicon
Wetting
Work functions
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creator Tavkhelidze, Avto
Taliashvili, Zaza
Leri Tsakadze
Jangidze, Larissa
Nodari Ushveridze
description We investigated a possibility of application of liquid metal contacts for devices based on thermotunneling. Electric and thermal characteristics of low wetting contact Hg/Si, and high wetting contacts Hg/Cu were determined and compared. We got tunneling I-V characteristics for Hg/Si, while for Hg/Cu, I-V characteristics were ohmic. We explained tunneling I-V characteristics by presence of nanogap between the contact materials. Heat conductance of high wetting and low wetting contacts were compared, using calorimeter measurements. Heat conductance of high wetting contact was 3-4 times more than of low wetting contact. Both electric and thermal characteristics of liquid metal contact indicated that it could be used for thermotunneling devices. We solved liquid Cs in liquid Hg to reduce work function and make liquid metal more suitable for room temperature cooling. Work function as low as 2.6 eV was obtained.
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subjects Casting
Current voltage characteristics
Electric contacts
Resistance
Silicon
Wetting
Work functions
title Liquid metal contact as possible element for thermotunneling
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