Visualizing polymeric liquid/solid interfaces by atomic force microscopy utilizing quartz tuning fork sensors

We investigated a polymeric liquid/solid interface by frequency modulation atomic force microscopy (FM-AFM) using a quartz tuning fork sensor, so-called qPlus sensor. We carried out topographic imaging on a muscovite mica surface in poly(dimethylsiloxane) (PDMS) which has 1000 times higher viscosity...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 59; no. SN; p. SN1009
Main Authors Yamada, Yuya, Ichii, Takashi, Utsunomiya, Toru, Sugimura, Hiroyuki
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2020
Subjects
atomic force microscopy
lubrication
nanotribology
polymeric liquid
qPlus sensor
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Summary:We investigated a polymeric liquid/solid interface by frequency modulation atomic force microscopy (FM-AFM) using a quartz tuning fork sensor, so-called qPlus sensor. We carried out topographic imaging on a muscovite mica surface in poly(dimethylsiloxane) (PDMS) which has 1000 times higher viscosity than that of water and the crystal structure of the mica surface was successfully imaged. Two-dimensional frequency shift mapping was also demonstrated at the interface and the layered structure of density distribution of the PDMS was imaged. The monotonic energy dissipation curve indicated the fluid-like behavior of the PDMS near the mica surface. In addition, lateral variation of density distribution was also imaged. The results in this work indicated usefulness of FM-AFM using qPlus sensors for lubrication study.
Bibliography:JJAP-S1101790.R1
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/ab84b0