Tunably Soft Colloids Synthesis and Characterization by Holographic Microscopy

Chen Wang; Hagay Shpaisman; David Grier

Abstract

Polydimethylsiloxane(PDMS) is an industrially important, widely used silicon-based organic polymer. Previous work showed that the addition of trivalent cross-linker transforms PDMS emulsion droplets into complied spheres, whose elasticity scales with the concentration of cross-linker. We use holographic video microscopy to characterize the synthesized PDMS with varying degree of deformability. Holographic characterization yields measurements of cross-linker concentration through the influence on the particles' sizes and refractive indices. In the performed experiments, we are able to detect the transition between liquid droplets and complied particles. and monitor the polymerization progress. The particles' compliance can be gauged in their interactions with rigid surfaces that we measure with holographic optical trapping and holographic particle characterization.

Original language	American English
Pages	T18.012
State	Published - 1 Mar 2014
Event	APS March Meeting 2014 - Colorado Convention Center, Denver, United States Duration: 3 Mar 2014 → 7 Mar 2014 https://www.aps.org/meetings/baps/march14.cfm

Conference

Conference	APS March Meeting 2014
Country/Territory	United States
City	Denver
Period	3/03/14 → 7/03/14
Internet address	https://www.aps.org/meetings/baps/march14.cfm

Bibliographical note

APS March Meeting 2014, abstract id. T18.012

Access to Document

https://ui.adsabs.harvard.edu/abs/2014APS..MART18012W

Cite this

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title = "Tunably Soft Colloids Synthesis and Characterization by Holographic Microscopy",

abstract = "Polydimethylsiloxane(PDMS) is an industrially important, widely used silicon-based organic polymer. Previous work showed that the addition of trivalent cross-linker transforms PDMS emulsion droplets into complied spheres, whose elasticity scales with the concentration of cross-linker. We use holographic video microscopy to characterize the synthesized PDMS with varying degree of deformability. Holographic characterization yields measurements of cross-linker concentration through the influence on the particles' sizes and refractive indices. In the performed experiments, we are able to detect the transition between liquid droplets and complied particles. and monitor the polymerization progress. The particles' compliance can be gauged in their interactions with rigid surfaces that we measure with holographic optical trapping and holographic particle characterization.",

author = "Chen Wang and Hagay Shpaisman and David Grier",

note = "APS March Meeting 2014, abstract id. T18.012 ; APS March Meeting 2014 ; Conference date: 03-03-2014 Through 07-03-2014",

year = "2014",

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pages = "T18.012",

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TY - CONF

T1 - Tunably Soft Colloids Synthesis and Characterization by Holographic Microscopy

AU - Wang, Chen

AU - Shpaisman, Hagay

AU - Grier, David

N1 - APS March Meeting 2014, abstract id. T18.012

PY - 2014/3/1

Y1 - 2014/3/1

N2 - Polydimethylsiloxane(PDMS) is an industrially important, widely used silicon-based organic polymer. Previous work showed that the addition of trivalent cross-linker transforms PDMS emulsion droplets into complied spheres, whose elasticity scales with the concentration of cross-linker. We use holographic video microscopy to characterize the synthesized PDMS with varying degree of deformability. Holographic characterization yields measurements of cross-linker concentration through the influence on the particles' sizes and refractive indices. In the performed experiments, we are able to detect the transition between liquid droplets and complied particles. and monitor the polymerization progress. The particles' compliance can be gauged in their interactions with rigid surfaces that we measure with holographic optical trapping and holographic particle characterization.

AB - Polydimethylsiloxane(PDMS) is an industrially important, widely used silicon-based organic polymer. Previous work showed that the addition of trivalent cross-linker transforms PDMS emulsion droplets into complied spheres, whose elasticity scales with the concentration of cross-linker. We use holographic video microscopy to characterize the synthesized PDMS with varying degree of deformability. Holographic characterization yields measurements of cross-linker concentration through the influence on the particles' sizes and refractive indices. In the performed experiments, we are able to detect the transition between liquid droplets and complied particles. and monitor the polymerization progress. The particles' compliance can be gauged in their interactions with rigid surfaces that we measure with holographic optical trapping and holographic particle characterization.

M3 - Abstract

SP - T18.012

T2 - APS March Meeting 2014

Y2 - 3 March 2014 through 7 March 2014