Swollen Lyotropic Cubic Phases in Fully Hydrated Mixtures of Monoolein, Dioleoylphosphatidylcholine, and Dioleoylphosphatidylethanolamine

1992 ◽  
pp. 262-265 ◽  
Author(s):  
R. H. Templer ◽  
K. H. Madan ◽  
N. A. Warrender ◽  
J. M. Seddon
Keyword(s):  
Cubic Phases

MODULATED FRINGE PATTERN PHOTOBLEACHING APPLIED TO LIPID-WATER CUBIC PHASES : STRUCTURAL INFORMATION

1990 ◽  
Vol 51 (C7) ◽  
pp. C7-105-C7-108
Author(s):  
S. CRIBIER ◽  
L. BOURDIEU ◽  
R. VARGAS ◽  
A. GULIK ◽  
V. LUZZATI
Keyword(s):  
Fringe Pattern ◽  
Structural Information ◽  
Cubic Phases

X-RAY STUDY OF CUBIC PHASES IN TERNARY SYSTEMS OF SURFACTANT DDAB, WATER AND OIL

1990 ◽  
Vol 51 (C7) ◽  
pp. C7-25-C7-34 ◽  
Author(s):  
P. BAROIS ◽  
D. EIDAM ◽  
S. T. HYDE
Keyword(s):  
Ternary Systems ◽  
X Ray ◽  
Cubic Phases

3D Crystallization and Structural Studies of Integral Membrane Proteins in Lipidic Cubic phases

2000 ◽  
Vol 56 (s1) ◽  
pp. s83-s83
Author(s):  
P. Nollert ◽  
M. L. Chiu ◽  
M. C. Loewen ◽  
A. Royant ◽  
H. Behrhali ◽  
...  
Keyword(s):  
Membrane Proteins ◽  
Integral Membrane Proteins ◽  
Structural Studies ◽  
Cubic Phases

scholarly journals Diffusionless transformation of soft cubic superstructure from amorphous to simple cubic and body-centered cubic phases

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jie Liu ◽  
Wenzhe Liu ◽  
Bo Guan ◽  
Bo Wang ◽  
Lei Shi ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
X Ray Diffraction ◽  
Photonic Materials ◽  
Simple Cubic ◽  
Cubic Phases ◽  
Transmission Electron ◽  
Phase Liquid ◽  
Blue Phase ◽  
Blue Phases ◽  
Temperature Window

AbstractIn a narrow temperature window in going from the isotropic to highly chiral orders, cholesteric liquid crystals exhibit so-called blue phases, consisting of different morphologies of long, space-filling double twisted cylinders. Those of cubic spatial symmetry have attracted considerable attention in recent years as templates for soft photonic materials. The latter often requires the creation of monodomains of predefined orientation and size, but their engineering is complicated by a lack of comprehensive understanding of how blue phases nucleate and transform into each other at a submicrometer length scale. In this work, we accomplish this by intercepting nucleation processes at intermediate stages with fast cross-linking of a stabilizing polymer matrix. We reveal using transmission electron microscopy, synchrotron small-angle X-ray diffraction, and angle-resolved microspectroscopy that the grid of double-twisted cylinders undergoes highly coordinated, diffusionless transformations. In light of our findings, the implementation of several applications is discussed, such as temperature-switchable QR codes, micro-area lasing, and fabrication of blue phase liquid crystals with large domain sizes.

The cubic phases

1991 ◽  
Vol 1 (4) ◽  
pp. 501-505 ◽  
Author(s):  
Paolo Mariani
Keyword(s):  
Cubic Phases

Mössbauer Studies of Fe2+ in Iron Langbeinites and other Crystals with Langbeinite Structure

1998 ◽  
Vol 53 (1-2) ◽  
pp. 27-37 ◽  
Author(s):  
M. Windhaus ◽  
B. D. Mosel ◽  
W. Müller-Warmuth
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
High Temperature ◽  
Low Temperature ◽  
High Spin State ◽  
Cubic Phases ◽  
Debye Temperatures ◽  
Phase Transition Temperatures ◽  
Abrupt Changes ◽  
Temperature Dependences

Abstract 57 Fe Mössbauer spectra have been measured at various temperatures between 4.2 K and 300 K for iron langbeinites A 2 Fe 2^04)3 with A = K, NH 4 , Rb, T1 and magnesium, manganese and cadmium lang-beinites doped with Fe" + . The spectra revealed several contributions whose isomer shifts and quadru-pole splittings have been obtained by fitting program routines. For the high-temperature cubic phases two crystallographically non-equivalent iron sites have been identified, characteristic of Fe2+ in the high-spin state. Abrupt changes of the quadrupole couplings indicated phase transitions; in some cases, the spectra have also revealed several sites for Fe2+ in low temperature phases. From the temperature dependences, phase transition temperatures, crystal field splittings and Debye temperatures have been derived.

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