Modification of field emitter array (FEA) tip shape by focused ion beam irradiation

Description

Tip shapes of Si field emitter arrays (FEAs), fabricated by a conventional dry etching process, have successfully bean modified by focused ion beam (FIB) irradiation to obtain a sharp cone shape. Flat-topped Si tips could be sharpened by localized sputtering using FIBs for a short time.

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