Preferential alignment

Preferential alignment

The preferential alignment is a criterion of an orientation of a molecule or atom. The preferential alignment can be related to the formation of the crystal structure of an amorphous structure.

For a polymer material with liquid crystals, the liquid crystals are molecules shaped like rigid rods. Just as logs being floated down a river tend to travel parallel to the direction of the river, liquid crystals have a preferential alignment with each other. At high temperatures, this alignment is disrupted and the material is said to be in the isotropic state. At lower temperatures, the alignment will take place and the liquid crystals are said to be in the pneumatic state [Hoong.C.C] .


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Crystallographic defects in diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique, the diamond size is 2 mm …   Wikipedia

  • Rheoscopic fluid — literally means current showing fluid. Such liquids can be effective in visualizing dynamic currents for the study and demonstration of fluid flow. They are suspensions of microscopic crystalline platelets which, When put into motion, orient the… …   Wikipedia

  • Grazing-incidence small-angle X-ray scattering — (GISAXS) is a scattering technique most commonly done at synchrotron radiation facilities. A related technique also exists for neutron scattering (GISANS). 300px|thumb|right|Scheme 1: GISAXS scattering geometry. The incident beam strikes the… …   Wikipedia

  • Abkürzungen/Luftfahrt/L–R — Dies ist der vierte Teil der Liste Abkürzungen/Luftfahrt. Liste der Abkürzungen Teil 1 A A Teil 2 B–D B; C; D Teil 3 E–K …   Deutsch Wikipedia

  • LACMTA Expo Line — The Metro Expo Line of the Los Angeles County Metro Rail is a light rail line currently under construction in Los Angeles County, California, USA, which will run from Downtown Los Angeles to Culver City and eventually to Santa Monica. Its route… …   Wikipedia

  • international trade — Introduction       economic transactions that are made between countries. Among the items commonly traded are consumer goods, such as television sets and clothing; capital goods, such as machinery; and raw materials and food. Other transactions… …   Universalium

  • HISTORICAL SURVEY: THE STATE AND ITS ANTECEDENTS (1880–2006) — Introduction It took the new Jewish nation about 70 years to emerge as the State of Israel. The immediate stimulus that initiated the modern return to Zion was the disappointment, in the last quarter of the 19th century, of the expectation that… …   Encyclopedia of Judaism

  • UNITED STATES OF AMERICA — UNITED STATES OF AMERICA, country in N. America. This article is arranged according to the following outline: introduction Colonial Era, 1654–1776 Early National Period, 1776–1820 German Jewish Period, 1820–1880 East European Jewish Period,… …   Encyclopedia of Judaism

  • Missionary position — This article is about the sex position. For the book by Christopher Hitchens, see The Missionary Position. The missionary position The missionary position is a man on top sex position usually described as the act in which the woman lies on her… …   Wikipedia

  • Brazilian military government — Federative Republic of Brazil (Republic of United States of Brazil until 1967) Republica Federativa do Brasil (República dos Estados Unidos do Brasil until 1967) Military dictatorship …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”