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<div>'''Patchy particles''' <ref>[http://dx.doi.org/10.1021/nl0493500 Zhenli Zhang and Sharon C. Glotzer "Self-Assembly of Patchy Particles", Nano Letters '''4''' pp. 1407-1413 (2004)]</ref> are models designed to keep pace with the rapid advances in the field of [[colloids]]. It is now possible to synthesise or fabricate tiny particles that have a variety of shapes, composition etc. In order to simulate these structures, there is a corresponding growth in the number of [[idealised models]] being developed and studied. With a view to classifying<br />
these "patchy" models the idea of "anisotropy dimensions" has been put forward.<br />
==Taxonomy: anisotropy dimensions==<br />
Anisotropy dimensions is a classification scheme for patchy particles <ref>[http://dx.doi.org/10.1038/nmat1949 Sharon C. Glotzer and Michael J. Solomon "Anisotropy of building blocks and their assembly into complex structures", Nature Materials '''6''' pp. 557-562 (2007)]</ref>.<br />
The eight attributes are as follows:<br />
====Surface coverage (A)====<br />
:[[Image:patchy_dimension_A.png|500px]]<br />
====Aspect ratio (B)====<br />
:::[[Image:patchy_dimension_B.png|500px]]<br />
====Faceting (C)====<br />
:[[Image:patchy_dimension_C.png|500px]]<br />
====Pattern quantisation (D)====<br />
:[[Image:patchy_dimension_D.png|500px]]<br />
====Branching (E)====<br />
:[[Image:patchy_dimension_E.png|500px]]<br />
====Chemical ordering (F)====<br />
:::[[Image:patchy_dimension_F.png|500px]]<br />
====Shape gradient (G)====<br />
:::[[Image:patchy_dimension_G.png|500px]]<br />
====Roughness (H)====<br />
::[[Image:patchy_dimension_H.png|500px]]<br />
<br />
==Models==<br />
*[[Bol model of water]]<br />
*[[Dahl and Andersen model of water]]<br />
*[[Kern and Frenkel patchy model]] <br />
*[[Modulated patchy Lennard-Jones model]]<br />
*[[Smith and Nezbeda associated fluid model]]<br />
*[[Laponite]]<br />
<br />
==See also==<br />
*[[Colloids]]<br />
*[[Emulsions]]<br />
*[[Janus particles]]<br />
*[[Phase diagram of anisotropic particles with octahedral symmetry]]<br />
*[[Anisotropic particles with tetrahedral symmetry]]<br />
*[[Wertheim's first order thermodynamic perturbation theory (TPT1)]]<br />
*[[TPT-CF| Multi-patch RTPT-CF]]<br />
<br />
==References==<br />
<references/><br />
'''Related reading'''<br />
*[http://dx.doi.org/10.1002/marc.200900614 Amar B. Pawar and Ilona Kretzschmar "Fabrication, Assembly, and Application of Patchy Particles", Macromolecular Rapid Communications '''31''' pp. 150-168 (2010)]<br />
*[http://dx.doi.org/10.1038/nmat2927 Willem K. Kegel and Henk N. W. Lekkerkerker "Colloidal gels: Clay goes patchy", Nature Materials '''10''' pp. 5-6 (2011)]<br />
*[http://dx.doi.org/10.1021/la3017563 Zhenping He and Ilona Kretzschmar "Template-Assisted Fabrication of Patchy Particles with Uniform Patches", Langmuir '''28''' pp. 9915-9919 (2011)]<br />
<br />
[[category: models]]</div>216.220.114.135