Electrostatic repulsion between highly injecting metals: An experimental investigation

Dervos, CT

dc.contributor.author	Dervos, CT	en
dc.date.accessioned	2014-03-01T01:12:51Z
dc.date.available	2014-03-01T01:12:51Z
dc.date.issued	1997	en
dc.identifier.issn	08827516	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12264
dc.subject.other	Electric charge	en
dc.subject.other	Electric contacts	en
dc.subject.other	Electric currents	en
dc.subject.other	Electric resistance	en
dc.subject.other	Electrodes	en
dc.subject.other	Electrostatics	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Electrostatic repulsion	en
dc.subject.other	Mechanically contacted metals	en
dc.subject.other	Particle beam injection	en
dc.title	Electrostatic repulsion between highly injecting metals: An experimental investigation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1155/1997/19198	en
heal.identifier.secondary	http://dx.doi.org/10.1155/1997/19198	en
heal.publicationDate	1997	en
heal.abstract	This paper is an experimental investigation of the major implications brought in the crossing resistance of mechanically contacted metals when operating in the high electronic injection regime, i.e., steady state interfacial voltage values greater than the max. acceptable level determined by specifications and less than the melting voltage. Under such operating conditions, monolayers of positive ions may be formed within interfacial cavities filled by the material from the surrounding space. The dominating ion neutralization process on the cathode controls the formation of ""Helmholtz"" inner layers at the metal cathode+oxide+gas interface. The presence of a positive ion monolayer over the cathode electrode will tend to reduce the field threshold required for electronic field emission and affect the overall current-voltage characteristics. The response of contacts operating under high charge injection is monitored on an injected charge vs. interfacial field phase space, which clearly demonstrates non-linear conductivity phenomena and hysteresis effects for the examined structures Experimental results indicate convincingly the importance of the dielectric media around highly injecting metal contacts. The excessive positive ion formation may also account for the experimentally observed electrostatic repulsion between highly injecting metal contacts. Under low contact pressure situations spontaneous separation of the current carying electrodes may occur. During a spontaneous contact breaking process, the transient current and voltage profiles across the metal contacts have been monitored using state-of-the-art data logging systems. The importance of the oxide capacitance and (time varying) gap capacitance on V(t) and I(t) profiles has been discussed. The obtained results provide evidence for the positive ion laser formation over the cathode electrodes.	en
heal.journalName	Active and Passive Electronic Components	en
dc.identifier.doi	10.1155/1997/19198	en
dc.identifier.volume	20	en
dc.identifier.issue	1	en
dc.identifier.spage	19	en
dc.identifier.epage	39	en