Patchy particles: Difference between revisions
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'''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> | '''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 | ||
== | these "patchy" models the idea of "anisotropy dimensions" has been put forward. | ||
Anisotropy dimensions is a classification scheme for patchy particles | ==Taxonomy: anisotropy dimensions== | ||
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>. | |||
The eight attributes are as follows: | The eight attributes are as follows: | ||
====Surface coverage (A)==== | ====Surface coverage (A)==== | ||
:[[Image:patchy_dimension_A.png|500px]] | |||
====Aspect ratio (B)==== | ====Aspect ratio (B)==== | ||
:::[[Image:patchy_dimension_B.png|500px]] | |||
====Faceting (C)==== | ====Faceting (C)==== | ||
:[[Image:patchy_dimension_C.png|500px]] | |||
====Pattern quantisation (D)==== | ====Pattern quantisation (D)==== | ||
:[[Image:patchy_dimension_D.png|500px]] | |||
====Branching (E)==== | ====Branching (E)==== | ||
:[[Image:patchy_dimension_E.png|500px]] | |||
====Chemical ordering (F)==== | ====Chemical ordering (F)==== | ||
:::[[Image:patchy_dimension_F.png|500px]] | |||
====Shape gradient (G)==== | ====Shape gradient (G)==== | ||
:::[[Image:patchy_dimension_G.png|500px]] | |||
====Roughness (H)==== | ====Roughness (H)==== | ||
::[[Image:patchy_dimension_H.png|500px]] | |||
==Models== | ==Models== | ||
*[[Bol model of water]] | *[[Bol model of water]] | ||
*[[Dahl and Andersen model of water]] | *[[Dahl and Andersen model of water]] | ||
*[[Inverse patchy colloids]] | |||
*[[Kern and Frenkel patchy model]] | *[[Kern and Frenkel patchy model]] | ||
*[[Modulated patchy Lennard-Jones model]] | *[[Modulated patchy Lennard-Jones model]] | ||
*[[Smith and Nezbeda associated fluid model]] | *[[Smith and Nezbeda associated fluid model]] | ||
*[[Laponite]] | |||
==See also== | ==See also== | ||
*[[Colloids]] | *[[Colloids]] | ||
| Line 22: | Line 35: | ||
*[[Janus particles]] | *[[Janus particles]] | ||
*[[Phase diagram of anisotropic particles with octahedral symmetry]] | *[[Phase diagram of anisotropic particles with octahedral symmetry]] | ||
*[[ | *[[Anisotropic particles with tetrahedral symmetry]] | ||
*[[Wertheim's first order thermodynamic perturbation theory (TPT1)]] | *[[Wertheim's first order thermodynamic perturbation theory (TPT1)]] | ||
*[[TPT-CF| Multi-patch RTPT-CF]] | |||
==References== | ==References== | ||
| Line 29: | Line 43: | ||
'''Related reading''' | '''Related reading''' | ||
*[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)] | *[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)] | ||
*[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)] | |||
*[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)] | |||
[[category: models]] | [[category: models]] | ||
Latest revision as of 13:27, 23 March 2015
Patchy particles [1] 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 these "patchy" models the idea of "anisotropy dimensions" has been put forward.
Taxonomy: anisotropy dimensions[edit]
Anisotropy dimensions is a classification scheme for patchy particles [2]. The eight attributes are as follows:
Surface coverage (A)[edit]
Aspect ratio (B)[edit]
Faceting (C)[edit]
Pattern quantisation (D)[edit]
Branching (E)[edit]
Chemical ordering (F)[edit]
Shape gradient (G)[edit]
Roughness (H)[edit]
Models[edit]
- Bol model of water
- Dahl and Andersen model of water
- Inverse patchy colloids
- Kern and Frenkel patchy model
- Modulated patchy Lennard-Jones model
- Smith and Nezbeda associated fluid model
- Laponite
See also[edit]
- Colloids
- Emulsions
- Janus particles
- Phase diagram of anisotropic particles with octahedral symmetry
- Anisotropic particles with tetrahedral symmetry
- Wertheim's first order thermodynamic perturbation theory (TPT1)
- Multi-patch RTPT-CF
References[edit]
Related reading
- Amar B. Pawar and Ilona Kretzschmar "Fabrication, Assembly, and Application of Patchy Particles", Macromolecular Rapid Communications 31 pp. 150-168 (2010)
- Willem K. Kegel and Henk N. W. Lekkerkerker "Colloidal gels: Clay goes patchy", Nature Materials 10 pp. 5-6 (2011)
- Zhenping He and Ilona Kretzschmar "Template-Assisted Fabrication of Patchy Particles with Uniform Patches", Langmuir 28 pp. 9915-9919 (2011)