scholarly journals Liquid crystal phase transitions in suspensions of mineral colloids: new life from old roots

2013 ◽  
Vol 371 (1988) ◽  
pp. 20120263 ◽  
Author(s):  
H. N. W. Lekkerkerker ◽  
G. J. Vroege
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Colloidal Suspensions ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Future Developments ◽  
Mineral Particles ◽  
Crystal Phases ◽  
Liquid Crystal Phases

A review is given of the field of mineral colloidal liquid crystals : liquid crystal phases formed by individual mineral particles within colloidal suspensions. Starting from their discovery in the 1920s, we discuss developments on the levels of both fundamentals and applications. We conclude by highlighting some promising results from recent years, which may point the way towards future developments.

scholarly journals QUANTUM LIQUID CRYSTAL PHASES IN FERMIONIC SUPERFLUIDS WITH PAIRING BETWEEN FERMION SPECIES OF UNEQUAL DENSITIES

2013 ◽  
Vol 27 (15) ◽  
pp. 1362001 ◽  
Author(s):  
KUN YANG
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Bose Condensation ◽  
Cooper Pairs ◽  
Quantum Liquid ◽  
Fermionic Systems ◽  
Crystal Phases ◽  
Unified Description ◽  
Liquid Crystal Phases

Superfluidity in fermionic systems originates from pairing of fermions, and Bose condensation of these Cooper pairs. The Cooper pairs are usually made of fermions of different species; thus the most favorable situation for pairing and superfluidity is when the two species of fermions that form pairs have the same density. This paper studies the possible superfluid states when the two pairing species have different densities, and show that the resultant states have remarkable similarities to the phases of liquid crystals. This enables us to provide a unified description of the possible pairing phases and understand the phase transitions among them.

scholarly journals Liquid Crystals Phase Transitions and AC-Calorimetry

2011 ◽  
Vol 1 ◽  
pp. 25-31
Author(s):  
Krishna P. Sigdel
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Ac Calorimetry ◽  
Crystal Phases ◽  
Liquid Crystal Phases

Liquid crystal is a delicate and beautiful phase of matter showing the order in between liquid and crystals. They have different phases and phase transitions. A powerful tool called AC calorimetry can be used to characterize the different phases and phase transitions. In this article, use of ac-calorimetry technique in liquid crystal phases and phase transitions is described.Key words: Liquid and crystals; AC calorimetryThe Himalayan Physics Vol.1, No.1, May, 2010Page: 25-31Uploaded Date: 28 July, 2011

scholarly journals Biaxial nematics of hard cuboids in an external field

Soft Matter ◽  
2019 ◽  
Vol 15 (9) ◽  
pp. 1922-1926 ◽  
Author(s):  
Alejandro Cuetos ◽  
Effran Mirzad Rafael ◽  
Daniel Corbett ◽  
Alessandro Patti
Keyword(s):  
Computer Simulation ◽  
Liquid Crystal ◽  
External Field ◽  
Colloidal Suspensions ◽  
Phase Behaviour ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Biaxial Nematics ◽  
Biaxial Nematic

By computer simulation, we model the phase behaviour of colloidal suspensions of board-like particles under the effect of an external field and assess the still disputed occurrence of the biaxial nematic (NB) liquid crystal phase.

Antiferroelectric Liquid Crystals from Achiral Molecules And A Liquid Conglomerate

1999 ◽  
Vol 559 ◽  
Author(s):  
David M. Walba ◽  
Eva Körblova ◽  
Renfan Shao ◽  
Joseph E. Maclennan ◽  
Darren R. Link ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Crystalline Structures ◽  
Chiral Liquid Crystal ◽  
Antiferroelectric Liquid Crystals ◽  
Liquid Crystal Structure

ABSTRACTUntil recently, it was an empirical fact that creation of a chiral liquid crystal phase required enantiomerically enriched molecules. In addition, to date known ferroelectric and antiferroelectric smectics have also been composed of enantiomerically enriched molecules. Herein are described the first examples of the formation of chiral and antiferroelectric supermolecular liquid crystalline structures from achiral molecules. In one case (apparently metastable) the liquid crystal structure is macroscopically chiral, with samples composed of heterochiral macroscopic domains: a liquid conglomerate.

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