Lateral force contrast for the detection of hydrophillc beads embedded within a PDMS surface

Peter Livingston; Tomoo Tsuzuki; Reinhard I. Boysen; Dan V. Nicolau

doi:10.1117/12.707690

Lateral force contrast for the detection of hydrophillc beads embedded within a PDMS surface

Peter Livingston, Tomoo Tsuzuki, Reinhard I. Boysen, Dan V. Nicolau

School of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

The Atomic Force Microscope (AFM) has been used for the characterization of polydimethylsiloxane (PDMS) surfaces with embedded, randomly dispersed micron-sized glass beads as a model system for a nano-topographical composite material with adjacent hydrophobic/hydrophilic areas. The use of lateral force microscopy (LFM) for the differentiation of regions within a composite material allowed for a mapping of the position of the hydrophilic glass beads, the determination of the height of the protruding beads and the surface area of the glass. Material properties of the PDMS were obtained from AFM contact-mode scans, contact angle measurements and from Fourier transform infrared spectroscopy for both, unexposed surfaces and surfaces exposed for 3 hours with a 185 nm deep UV light source. The UV exposure was found to have an effect on the lateral force signal via a change in the stiffness of the PDMS but the resulting lower contrast was still sufficient for the discrimination of the different regions.

Original language	English
Title of host publication	Biomedical Applications of Micro- and Nanoengineering III
Volume	6416
DOIs	https://doi.org/10.1117/12.707690
Publication status	Published - 2007
Event	Biomedical Applications of Micro- and Nanoengineering III - Adelaide, Australia Duration: 11 Dec 2006 → 13 Dec 2006

Conference

Conference	Biomedical Applications of Micro- and Nanoengineering III
Country/Territory	Australia
City	Adelaide
Period	11/12/06 → 13/12/06

Keywords

Atomic force microscopy
Glass beads
Lateral force contrast
Polydimethylsiloxane

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10.1117/12.707690

Cite this

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title = "Lateral force contrast for the detection of hydrophillc beads embedded within a PDMS surface",

abstract = "The Atomic Force Microscope (AFM) has been used for the characterization of polydimethylsiloxane (PDMS) surfaces with embedded, randomly dispersed micron-sized glass beads as a model system for a nano-topographical composite material with adjacent hydrophobic/hydrophilic areas. The use of lateral force microscopy (LFM) for the differentiation of regions within a composite material allowed for a mapping of the position of the hydrophilic glass beads, the determination of the height of the protruding beads and the surface area of the glass. Material properties of the PDMS were obtained from AFM contact-mode scans, contact angle measurements and from Fourier transform infrared spectroscopy for both, unexposed surfaces and surfaces exposed for 3 hours with a 185 nm deep UV light source. The UV exposure was found to have an effect on the lateral force signal via a change in the stiffness of the PDMS but the resulting lower contrast was still sufficient for the discrimination of the different regions.",

keywords = "Atomic force microscopy, Glass beads, Lateral force contrast, Polydimethylsiloxane",

author = "Peter Livingston and Tomoo Tsuzuki and Boysen, {Reinhard I.} and Nicolau, {Dan V.}",

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doi = "10.1117/12.707690",

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AU - Livingston, Peter

AU - Tsuzuki, Tomoo

AU - Boysen, Reinhard I.

AU - Nicolau, Dan V.

PY - 2007

Y1 - 2007

N2 - The Atomic Force Microscope (AFM) has been used for the characterization of polydimethylsiloxane (PDMS) surfaces with embedded, randomly dispersed micron-sized glass beads as a model system for a nano-topographical composite material with adjacent hydrophobic/hydrophilic areas. The use of lateral force microscopy (LFM) for the differentiation of regions within a composite material allowed for a mapping of the position of the hydrophilic glass beads, the determination of the height of the protruding beads and the surface area of the glass. Material properties of the PDMS were obtained from AFM contact-mode scans, contact angle measurements and from Fourier transform infrared spectroscopy for both, unexposed surfaces and surfaces exposed for 3 hours with a 185 nm deep UV light source. The UV exposure was found to have an effect on the lateral force signal via a change in the stiffness of the PDMS but the resulting lower contrast was still sufficient for the discrimination of the different regions.

AB - The Atomic Force Microscope (AFM) has been used for the characterization of polydimethylsiloxane (PDMS) surfaces with embedded, randomly dispersed micron-sized glass beads as a model system for a nano-topographical composite material with adjacent hydrophobic/hydrophilic areas. The use of lateral force microscopy (LFM) for the differentiation of regions within a composite material allowed for a mapping of the position of the hydrophilic glass beads, the determination of the height of the protruding beads and the surface area of the glass. Material properties of the PDMS were obtained from AFM contact-mode scans, contact angle measurements and from Fourier transform infrared spectroscopy for both, unexposed surfaces and surfaces exposed for 3 hours with a 185 nm deep UV light source. The UV exposure was found to have an effect on the lateral force signal via a change in the stiffness of the PDMS but the resulting lower contrast was still sufficient for the discrimination of the different regions.

KW - Atomic force microscopy

KW - Glass beads

KW - Lateral force contrast

KW - Polydimethylsiloxane

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SN - 9780819465245

VL - 6416

BT - Biomedical Applications of Micro- and Nanoengineering III

T2 - Biomedical Applications of Micro- and Nanoengineering III

Y2 - 11 December 2006 through 13 December 2006

ER -

Lateral force contrast for the detection of hydrophillc beads embedded within a PDMS surface

Abstract

Conference

Keywords

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