Ultrasonic Nanofabrication with an AFM

TL;DR

This paper explores ultrasonic AFM as a novel nanofabrication method that leverages ultrasonic vibrations to enhance surface manipulation, reduce friction, and enable subsurface feature control at the nanoscale.

Contribution

It introduces ultrasonic vibration into AFM to improve nanofabrication capabilities, including subsurface manipulation and reduced friction effects.

Findings

Ultrasonic vibration enables indentation and scratching on hard surfaces with soft AFM tips.

Ultrasound reduces friction, enhancing manipulation precision.

Subsurface nanoscale features can be manipulated using ultrasonic actuation.

Abstract

Ultrasonic AFM may improve fabrication technologies on the nanometer scale. In the presence of ultrasonic vibration, hard surfaces can be indented and scratched with the tip of a soft cantilever, due to its inertia. Ultrasound reduces or even eliminates friction, and hence modifies the tip-nanoparticle-surface interactions in AFM manipulation. The subsurface sensitivity of the technique makes feasible the purposed manipulation of subsurface nanoscale features by ultrasonic actuation.