THE _PINKS _PHER0 _
Phase transitions in lyotropic colloidal and polymer liquid crystals
G J Vroege et al 1992 Rep. Prog. Phys. 55 1241-1309 doi: 10.1088/0034-4885/55/8/003
PDF (2.73 MB) References Articles citing this article
G J Vroege and H N W LekkerkerkerVan 't Hoff Lab., Utrecht Univ., Netherlands
Abstract. An overview is given of theory and experiments on liquid crystal phases which appear in solutions of elongated colloidal particles or stiff polymers. The Onsager (1949) virial theory for the isotropic-nematic transition of thin rodlike particles is treated comprehensively along with extensions to polydisperse solutions and soft interactions. Computer simulations of liquid crystal phases in hard particle fluids are summarized and used to assess the quality of statistical mechanical theories for stiff particles at higher volume fraction-like the inclusion of higher virial coefficients, y-expansion, scaled particle theory and density functional theory. Both computer simulations and density functional theory indicate formation of more highly ordered smectic phases. The range of experimental applicability is strongly widened by the extension of the virial theory to wormlike chains by Khokhlov and Semenov (1981,1982). Finally, experimental results for a number of carefully studied, charged and uncharged colloids and polymers are summarized and compared to theoretical results. In many cases the agreement is semi-quantitative.
Print publication: Issue 8 (August 1992)PDF (2.73 MB) References Articles citing this article
AAUP » Publications & Research » Academe » 2007 Issues » January-February 2007 » Features » Etiquette for the Professoriate
Etiquette for the Professoriate
Do you want respect from your students? Start with your own manners.
By Ronald S. Lemos
In writing about etiquette, my goal isn’t to talk about how to behave at tea with the board of trustees. And I am not interested in the proper title with which to address honorary degree recipients. The etiquette that concerns me is the kind we used to worry about back in the days of Emily Post—standards for the way we treat one another in everyday encounters. Etiquette involves showing respect and concern for others’ well-being and comfort. It is not just for special occasions or something you practice only when you want to impress someone. Etiquette should be practiced all the time with every type of person—including students. If our society is becoming less civil, perhaps we faculty members are not doing as much as we should to set an example of what a civilized society should look like.
Tuesday, April 22, 2008
Subscribe to:
Posts (Atom)