scholarly journals Interface behavior of physical hydrogel subject to solution-gel phase transition and nonlinear deformation

2016 ◽  
Vol 100-101 ◽  
pp. 417-426 ◽  
Author(s):  
Tao Wu ◽  
Hua Li
Keyword(s):  
Phase Transition ◽  
Nonlinear Deformation ◽  
Interface Behavior ◽  
Gel Phase

Electrically induced gel-to-gel phase-transition in neurons

2006 ◽  
Vol 30 (2) ◽  
pp. 175-182 ◽  
Author(s):  
R KELLERMAYER ◽  
A ZSOMBOK ◽  
T AUER ◽  
F GALLYAS
Keyword(s):  
Phase Transition ◽  
Gel Phase

scholarly journals Variation of thermal conductivity of DPPC lipid bilayer membranes around the phase transition temperature

2017 ◽  
Vol 14 (130) ◽  
pp. 20170127 ◽  
Author(s):  
Sina Youssefian ◽  
Nima Rahbar ◽  
Christopher R. Lambert ◽  
Steven Van Dessel
Keyword(s):  
Phase Transition ◽  
Thermal Conductivity ◽  
Thermal Properties ◽  
Transition Temperature ◽  
Lipid Bilayer ◽  
Lipid Bilayers ◽  
Phase Transition Temperature ◽  
Temperature Gradients ◽  
Phase Behaviour ◽  
Gel Phase

Given their amphiphilic nature and chemical structure, phospholipids exhibit a strong thermotropic and lyotropic phase behaviour in an aqueous environment. Around the phase transition temperature, phospholipids transform from a gel-like state to a fluid crystalline structure. In this transition, many key characteristics of the lipid bilayers such as structure and thermal properties alter. In this study, we employed atomistic simulation techniques to study the structure and underlying mechanisms of heat transfer in dipalmitoylphosphatidylcholine (DPPC) lipid bilayers around the fluid–gel phase transformation. To investigate this phenomenon, we performed non-equilibrium molecular dynamics simulations for a range of different temperature gradients. The results show that the thermal properties of the DPPC bilayer are highly dependent on the temperature gradient. Higher temperature gradients cause an increase in the thermal conductivity of the DPPC lipid bilayer. We also found that the thermal conductivity of DPPC is lowest at the transition temperature whereby one lipid leaflet is in the gel phase and the other is in the liquid crystalline phase. This is essentially related to a growth in thermal resistance between the two leaflets of lipid at the transition temperature. These results provide significant new insights into developing new thermal insulation for engineering applications.

Sol-gel phase transition of brucine-appended porphyrin gelator: a study by vibrational circular dichroism spectroscopy

2002 ◽  
Vol 13 (24) ◽  
pp. 2661-2666 ◽  
Author(s):  
Vladimı́r Setnička ◽  
Marie Urbanová ◽  
Statis Pataridis ◽  
Vladimı́r Král ◽  
Karel Volka
Keyword(s):  
Phase Transition ◽  
Circular Dichroism ◽  
Sol Gel ◽  
Circular Dichroism Spectroscopy ◽  
Vibrational Circular Dichroism ◽  
Gel Phase ◽  
Circular Dichroïsm

scholarly journals Microscopic Description of the Thermodynamics of a Lipid Membrane at a Liquid–Gel Phase Transition

JETP Letters ◽  
2018 ◽  
Vol 107 (11) ◽  
pp. 718-724 ◽  
Author(s):  
B. Kheyfets ◽  
T. Galimzyanov ◽  
S. Mukhin
Keyword(s):  
Phase Transition ◽  
Lipid Membrane ◽  
Microscopic Description ◽  
Gel Phase
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