期刊
CARBON
卷 43, 期 3, 页码 503-510出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2004.10.009
关键词
graphite oxide; etching, surface treatment; modeling; electronic properties
Some preliminary studies to realize a carbonaceous electronic circuit were carried out using the liquid-dispersible thin-film particles of graphite oxide and their conductive reduction product. (1) The affinity of insulator substrates (diamond, silicon carbide, silicon, sapphire and three kinds of glass) for the particles was improved by heating and immersion in water. (2) The electric conductivity was measured for a wide wiring pattern formed by a large number of the reduced thin-film particles mounted on the substrate, and the value was 1600 S/m after heating at 500degreesC. (3) To make the prototype of a narrow wiring or a micro device, the internal micro fabrication (position-selective removal) of a single particle was attempted using focused ion beam. Many kinds of patterns which contain narrow wiring having a width of 200 nm etc. were formed in the reduced thin-film particle having about 10 nm thickness. (4) The simple model calculation of anisotropic conductivity was executed for thin graphite which has a small number of layers and finite size. In the case of the fine graphitic carbonaceous devices and circuits, much attention must be paid to their sizes in all directions. (C) 2004 Elsevier Ltd. All rights reserved.
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