Observation of Bridge Size in Micro-gap by Using Cantilever Used Gap Control System (国際セッションIS--EMD 2003) -- (Session 1 Contact phenomena(1))

概要

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According to our former experiments, the cyclic convex waveforms of the bridge-voltage were observed at the instant of the contacts separation with a micro-steps of 0.5 μm each and holding the constant contact gap with step by step. In order to investigate this phenomenon more precisely, the authors have developed a new micro-gap separating system using the cantilever. The observed results are shown in this paper for Pd contacts. A cylindrical bridge was observed. An interesting phenomenon was observed that the contact gap shrank as the current increases and it expanded as the current decreases. This gap variations can be assumed due to temperature variation of the contact bridge. In this paper, the images of the bridges and the measured data of the bridge length and the diameter of the cylindrical bridge are shown.
2003-11-13