Dielectrophoretic Manipulation Of Individual Nickel Nanowires For Electrical Transport Measurements

dc.creatorPuydinger dos Santos
dc.creatorMarcos V.; Lima
dc.creatorLucas P. B.; Mayer
dc.creatorRafael A.; Beron
dc.creatorFanny; Pirota
dc.creatorKleber R.; Diniz
dc.creatorJose A.
dc.date2015-MAY
dc.date2016-06-07T13:17:24Z
dc.date2016-06-07T13:17:24Z
dc.date.accessioned2018-03-29T01:37:57Z
dc.date.available2018-03-29T01:37:57Z
dc.identifier
dc.identifierDielectrophoretic Manipulation Of Individual Nickel Nanowires For Electrical Transport Measurements. A V S Amer Inst Physics, v. 33, p. MAY-2015.
dc.identifier1071-1023
dc.identifierWOS:000355011700039
dc.identifier10.1116/1.4918732
dc.identifierhttp://scitation.aip.org/content/avs/journal/jvstb/33/3/10.1116/1.4918732
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/242315
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1306013
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionNanowires (NW) have received much attention due to their high aspect ratio, shape anisotropy, relatively large surface area and particular electron transport properties. In addition, since NW present low current levels and high sensitivity, they can be used as sensor devices for several applications. One of the major challenges when dealing with transport measurements in NW is to trap them between electrodes, which allow electrical characterization and therefore fabrication of nanowire-based devices. Electrically neutral NW can be deposited by dielectrophoresis (DEP) method, which requires the application of an alternating electric field between electrodes. In this work, properly dispersed Ni nanowires (NiNW) (length = 4+/-1 mu m, diameter = 35+/-5 nm) were deposited on top of Pt electrodes using the DEP method. The effects of electrodes geometry and electric field frequency on DEP efficiency were evaluated. For optimized DEP parameters, the process efficiency is up to 85%. The deposited NiNW exhibit a Schottky-like current versus voltage behavior due to the high contact resistance between NiNW and electrode. Its reduction down to two orders of magnitude, reaching value less than the NiNW resistance (similar to 6k Omega), was achieved by depositing a 10 nm-thick Pt layer over the NW extremities. Therefore, this method presents a selection of adequate electrical DEP parameters and electrode geometry, making it a suitable process of NW deposition and electrical characterization. This can be used for investigation of electrical transport properties of individual NW and fabrication of NW-based devices, like sensors and field effect transistors. (C) 2015 American Vacuum Society.
dc.description33
dc.description3
dc.description
dc.description
dc.description
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description
dc.description
dc.description
dc.languageen
dc.publisherA V S AMER INST PHYSICS
dc.publisher
dc.publisherMELVILLE
dc.relationJOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
dc.rightsaberto
dc.sourceWOS
dc.subjectBeam
dc.subjectFabrication
dc.subjectConductivity
dc.subjectParticles
dc.subjectMotion
dc.subjectNi
dc.titleDielectrophoretic Manipulation Of Individual Nickel Nanowires For Electrical Transport Measurements
dc.typeArtículos de revistas


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