Difference between revisions of "Colloidal self-assembly at an interface"

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reference: [http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6X1J-5073XXG-K&_user=10&_coverDate=06%2F30%2F2010&_alid=1466670858&_rdoc=3&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=7244&_st=13&_docanchor=&view=c&_ct=3&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1161e2fe9073b7d2ff61bae65fc775da&searchtype=a]
 
reference: [http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6X1J-5073XXG-K&_user=10&_coverDate=06%2F30%2F2010&_alid=1466670858&_rdoc=3&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=7244&_st=13&_docanchor=&view=c&_ct=3&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1161e2fe9073b7d2ff61bae65fc775da&searchtype=a]
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It has been well known that colloidal particles can form at the interfaces between liquids. This phenomenon can be used to self-assemble colloidal particles and ultimately to synthesize new materials.
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The colloidal particles' ability to bind to liquid and stabilize emulsion is guided by the need to minimize interfacial energy. When a particle moves from a liquid to a liquid-liquid interface, the change in free energy is
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<math>\Delta G=-\pi R^2\gamma_{OW} (1-\cos\theta_C)^2</math>
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where <math>R</math> is the particle radius, <math>\gamma_{OW}</math> is the energy per unit area of the liquid-liquid interface, and <math>\theta_C</math> is the contact angle.

Revision as of 04:08, 20 September 2010

Edited by Qichao Hu

September 19th, 2010


reference: [1]


It has been well known that colloidal particles can form at the interfaces between liquids. This phenomenon can be used to self-assemble colloidal particles and ultimately to synthesize new materials.

The colloidal particles' ability to bind to liquid and stabilize emulsion is guided by the need to minimize interfacial energy. When a particle moves from a liquid to a liquid-liquid interface, the change in free energy is

<math>\Delta G=-\pi R^2\gamma_{OW} (1-\cos\theta_C)^2</math>

where <math>R</math> is the particle radius, <math>\gamma_{OW}</math> is the energy per unit area of the liquid-liquid interface, and <math>\theta_C</math> is the contact angle.