Influence of palmitic acid and hexadecanol on the phase transition temperature and molecular packing of dipalmitoylphosphatidyl-choline monolayers at the air–water interface

2002 ◽  
Vol 116 (2) ◽  
pp. 774-783 ◽  
Author(s):  
Ka Yee C. Lee ◽  
Ajaykumar Gopal ◽  
Anja von Nahmen ◽  
Joseph A. Zasadzinski ◽  
Jaroslaw Majewski ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Palmitic Acid ◽  
Phase Transition Temperature ◽  
Molecular Packing ◽  
Water Interface ◽  
Air Water Interface

Poly(N-isopropylacrylamide) microgels at the oil–water interface: temperature effect

Soft Matter ◽  
2014 ◽  
Vol 10 (33) ◽  
pp. 6182-6191 ◽  
Author(s):  
Zifu Li ◽  
Walter Richtering ◽  
To Ngai
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Interfacial Tension ◽  
Temperature Effect ◽  
Phase Transition Temperature ◽  
Interface Temperature ◽  
Volume Phase Transition ◽  
Water Interface ◽  
Early States ◽  
Oil Water

The heptane–water interfacial tension exhibits a minimum in the presence of PNIPAM microgels, particularly in the vicinity of the volume phase transition temperature (VPTT) of PNIPAM microgels. The origin of such interfacial tension minima contributes to the microgel spreading at the oil–water interface in the early states and is then governed by the microgels' packing and interactions in the final static equilibrium states.

The structure of membranes and membrane proteins embedded in amorphous ice

1992 ◽  
Vol 50 (1) ◽  
pp. 432-433
Author(s):  
Uwe Lücken ◽  
Joachim Jäger
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Membrane Proteins ◽  
Phase Transition Temperature ◽  
Lipid Vesicles ◽  
Freezing Stress ◽  
Amorphous Ice ◽  
Different Temperatures ◽  
Band Pass ◽  
Lipid Polymorphism

TEM imaging of frozen-hydrated lipid vesicles has been done by several groups Thermotrophic and lyotrophic polymorphism has been reported. By using image processing, computer simulation and tilt experiments, we tried to learn about the influence of freezing-stress and defocus artifacts on the lipid polymorphism and fine structure of the bilayer profile. We show integrated membrane proteins do modulate the bilayer structure and the morphology of the vesicles.Phase transitions of DMPC vesicles were visualized after freezing under equilibrium conditions at different temperatures in a controlled-environment vitrification system. Below the main phase transition temperature of 24°C (Fig. 1), vesicles show a facetted appearance due to the quasicrystalline areas. A gradual increase in temperature leads to melting processes with different morphology in the bilayer profile. Far above the phase transition temperature the bilayer profile is still present. In the band-pass-filtered images (Fig. 2) no significant change in the width of the bilayer profile is visible.

scholarly journals Study of physical properties of a ferrimagnetic spinel Cu1.5Mn1.5O4: spin dynamics, magnetocaloric effect and critical behavior

RSC Advances ◽  
2021 ◽  
Vol 11 (41) ◽  
pp. 25664-25676
Author(s):  
Abir Hadded ◽  
Jalel Massoudi ◽  
Sirine Gharbi ◽  
Essebti Dhahri ◽  
A. Tozri ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Physical Properties ◽  
Magnetocaloric Effect ◽  
Phase Transition Temperature ◽  
Magnetic Phase Transition ◽  
Critical Behavior ◽  
Magnetic Phase ◽  
Spin Dynamics ◽  
Critical Behaviour

The present work reports a detailed study of the spin dynamics, magnetocaloric effect and critical behaviour near the magnetic phase transition temperature, of a ferrimagnetic spinel Cu1.5Mn1.5O4.

scholarly journals Modulating the phase transition temperature of giant magnetocaloric thin films by ion irradiation

2017 ◽  
Vol 1 (6) ◽  
Author(s):  
S. Cervera ◽  
M. Trassinelli ◽  
M. Marangolo ◽  
C. Carrétéro ◽  
V. Garcia ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Ion Irradiation
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