A finite-cluster phase in lambda-DNA-coated colloids

Tatiana Schmatko; Behnaz Bozorgui; Nienke Geerts; Daan Frenkel; Erika Eiser; Wilson C. K. Poon

doi:10.1039/b618028k

A finite-cluster phase in lambda-DNA-coated colloids

Tatiana Schmatko, Behnaz Bozorgui, Nienke Geerts, Daan Frenkel, Erika Eiser, Wilson C. K. Poon

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We studied the aggregation of 1 mu m colloids bridged by DNA with 32 mu m contour length. We mixed two species of particles with grafted double-stranded lambda-DNA displaying short, complementary single-stranded 'overhangs' as free binding-ends. Confocal microscopy showed the formation of stable, size-limited clusters in which the two species of particles were at touching contact. Simulations suggest that the observed close contact and the limitation to grow both result from entropic exclusion of the bridging DNA from the space between nearby particle surfaces.

Original language	English
Pages (from-to)	703-706
Number of pages	4
Journal	Soft Matter
Volume	3
Issue number	6
DOIs	https://doi.org/10.1039/b618028k
Publication status	Published - 2007

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10.1039/b618028k

Edinburgh Soft Matter and Statistical Physics Group: Programme Grant
Cates, M. (Principal Investigator), Ackland, G. (Co-investigator), Egelhaaf, S. (Co-investigator), Evans, M. (Co-investigator), Poon, W. (Co-investigator) & Pusey, P. (Co-investigator)
EPSRC
1/10/03 → 31/03/08
Project: Research

Cite this

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title = "A finite-cluster phase in lambda-DNA-coated colloids",

abstract = "We studied the aggregation of 1 mu m colloids bridged by DNA with 32 mu m contour length. We mixed two species of particles with grafted double-stranded lambda-DNA displaying short, complementary single-stranded 'overhangs' as free binding-ends. Confocal microscopy showed the formation of stable, size-limited clusters in which the two species of particles were at touching contact. Simulations suggest that the observed close contact and the limitation to grow both result from entropic exclusion of the bridging DNA from the space between nearby particle surfaces.",

author = "Tatiana Schmatko and Behnaz Bozorgui and Nienke Geerts and Daan Frenkel and Erika Eiser and Poon, {Wilson C. K.}",

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AU - Schmatko, Tatiana

AU - Bozorgui, Behnaz

AU - Geerts, Nienke

AU - Frenkel, Daan

AU - Eiser, Erika

AU - Poon, Wilson C. K.

PY - 2007

Y1 - 2007

N2 - We studied the aggregation of 1 mu m colloids bridged by DNA with 32 mu m contour length. We mixed two species of particles with grafted double-stranded lambda-DNA displaying short, complementary single-stranded 'overhangs' as free binding-ends. Confocal microscopy showed the formation of stable, size-limited clusters in which the two species of particles were at touching contact. Simulations suggest that the observed close contact and the limitation to grow both result from entropic exclusion of the bridging DNA from the space between nearby particle surfaces.

AB - We studied the aggregation of 1 mu m colloids bridged by DNA with 32 mu m contour length. We mixed two species of particles with grafted double-stranded lambda-DNA displaying short, complementary single-stranded 'overhangs' as free binding-ends. Confocal microscopy showed the formation of stable, size-limited clusters in which the two species of particles were at touching contact. Simulations suggest that the observed close contact and the limitation to grow both result from entropic exclusion of the bridging DNA from the space between nearby particle surfaces.

U2 - 10.1039/b618028k

DO - 10.1039/b618028k

M3 - Article

SN - 1744-683X

VL - 3

SP - 703

EP - 706

JO - Soft Matter

JF - Soft Matter

IS - 6

ER -

A finite-cluster phase in lambda-DNA-coated colloids

Abstract

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Edinburgh Soft Matter and Statistical Physics Group: Programme Grant

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