Hyun S Kim et al 2007 Nanotechnology 18 065201 doi:10.1088/0957-4484/18/6/065201
Hyun S Kim1, Hua Qin1, Michael S Westphall2, Lloyd M Smith2 and Robert H Blick1
Show affiliationsWe measured field emission from a silicon nanopillar mechanically oscillating between two electrodes. The pillar has a height of about 200 nm and a diameter of 50 nm, allowing resonant mechanical excitations at radio frequencies. The tunnelling barriers for field emission are mechanically modulated via displacement of the gold island on top of the pillar. We present a rich frequency-dependent response of the emission current in the frequency range of 300–400 MHz at room temperature. Modified Fowler–Nordheim field emission is observed and attributed to the mechanical oscillations of the nanopillar.
79.70.+q Field emission, ionization, evaporation, and desorption
62.25.-g Mechanical properties of nanoscale systems
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Issue 6 (14 February 2007)
Received 30 October 2006, in final form 27 November 2006
Published 10 January 2007
Hyun S Kim et al 2007 Nanotechnology 18 065201
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