Burnout current density of bismuth nanowires

Autor:	Jinglai Duan, Sven Müller, Shafqat Karim, Thomas W. Cornelius, R. Neumann, Oliver Picht, F. Völklein
Rok vydání:	2008
Předmět:	chemistry.chemical_classification Materials science Orders of magnitude (temperature) Nanowire General Physics and Astronomy chemistry.chemical_element Nanotechnology Polymer Bismuth Ion chemistry Melting point Composite material Current (fluid) Current density
Zdroj:	Journal of Applied Physics. 103:103713
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.2927443
Popis:	Single bismuth nanowires with diameters ranging from 100nmto1μm were electrochemically deposited in ion track-etched single-pore polycarbonate membranes. The maximum current density the wires are able to carry was investigated by ramping up the current until failure occurred. It increases by three to four orders of magnitude for nanowires embedded in the template compared to bulk bismuth and rises with diminishing diameter. Simulations show that the wires are heated up electrically to the melting temperature. Since the surface-to-volume ratio rises with diminishing diameter, thinner wires dissipate the heat more efficiently to the surrounding polymer matrix and, thus, can tolerate larger current densities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::53bcae4f695babd651d0fd8a19f9999b https://doi.org/10.1063/1.2927443 Zobrazit plný text záznamu