scholarly journals A nematic to nematic transformation exhibited by a rod-like liquid crystal

2017 ◽  
Vol 19 (18) ◽  
pp. 11429-11435 ◽  
Author(s):  
Richard J. Mandle ◽  
S. J. Cowling ◽  
J. W. Goodby
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Order Phase Transition ◽  
Liquid Crystalline ◽  
Crystalline Material ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase ◽  
Liquid Crystalline Material

A polar, rod-like liquid crystalline material was observed to exhibit two distinct nematic mesophases separated by a first-order phase transition.

ORDER PHASE TRANSITION NEAR THE INVERSION POINT OF MAIN ANISOTROPY

1990 ◽  
Vol 04 (11) ◽  
pp. 751-758 ◽  
Author(s):  
R. BARBERI ◽  
G. BARBERO ◽  
L.R. EVANGELISTA
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
External Field ◽  
Order Phase Transition ◽  
Tricritical Point ◽  
Ferromagnetic Material ◽  
Inversion Point ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

The order phase transition induced by an external field near the inversion point of the main anisotropy is analysed. It is shown that if the medium has the symmetry of the nematic liquid crystal or of the ferromagnetic material, the phase transition near this point can be of first order. The tricritical field and the hysteresis loop of this first order phase transition are evaluated. An evaluation of the tricritical point is also reported.

scholarly journals Gravitational wave signals of dark matter freeze-out

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Danny Marfatia ◽  
Po-Yan Tseng
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
Gravitational Waves ◽  
Order Phase Transition ◽  
First Order ◽  
Stochastic Background ◽  
First Order Phase Transition ◽  
Relic Abundance ◽  
First Order Phase ◽  
Freeze Out

Abstract We study the stochastic background of gravitational waves which accompany the sudden freeze-out of dark matter triggered by a cosmological first order phase transition that endows dark matter with mass. We consider models that produce the measured dark matter relic abundance via (1) bubble filtering, and (2) inflation and reheating, and show that gravitational waves from these mechanisms are detectable at future interferometers.

Discovering a First-Order Phase Transition in the Li–CeO2 System

Nano Letters ◽  
2017 ◽  
Vol 17 (2) ◽  
pp. 1282-1288 ◽  
Author(s):  
Kaikai Li ◽  
Xiaoye Zhou ◽  
Anmin Nie ◽  
Sheng Sun ◽  
Yan-Bing He ◽  
...  
Keyword(s):  
Phase Transition ◽  
Order Phase Transition ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase
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