Journal article

Artifact-free dynamic atomic force microscopy reveals monotonic dissipation for a simple confined liquid

GB Kaggwa, JI Kilpatrick, JE Sader, SP Jarvis

APPLIED PHYSICS LETTERS | AMER INST PHYSICS | Published : 2008

Abstract

We present definitive interaction measurements of a simple confined liquid (octamethylcyclotetrasiloxane) using artifact-free frequency modulation atomic force microscopy. We use existing theory to decouple the conservative and dissipative components of the interaction, for a known phase offset from resonance (90° phase shift), that has been deliberately introduced into the experiment. Further we show the qualitative influence on the conservative and dissipative components of the interaction of a phase error deliberately introduced into the measurement, highlighting that artifacts, such as oscillatory dissipation, can be readily observed when the phase error is not compensated for in the for..

View full abstract

University of Melbourne Researchers