Zobrazeno 1 - 10 of 23 pro vyhledávání: '"M E, Neubert"'
2
A deuterium nuclear magnetic resonance investigation of the symmetry and orientational order of the nematic phase of 4-[3,4,5-tris(4-dodecyloxybenzyloxy)benzoyloxy]-4′- (4-dodecyloxybenzoyloxy)-1,1′-biphenyl. A biaxial nematic?
Autor: J. R. Hughes, M. E. Neubert, G. Kothe, M. Tittelbach, J. Malthête, Bakir A. Timimi, Geoffrey R. Luckhurst, I. Shenouda
Publikováno v: The Journal of Chemical Physics. 107:9252-9263
The first compound for which the previously predicted biaxial nematic phase was claimed is 4-[3,4,5-tris(4-dodecyloxybenzyloxy)benzoyloxy]-4′-(4-dodecyloxybenzoyloxy)-1, 1′-biphenyl (I). This assignment was based on the observation of the optical
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::910f833b65cab11a43ddcb042bfe0b0c
https://doi.org/10.1063/1.475318
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3
Infulence of Dopant Structure on the Ability of Enhancing Sc Phase
Autor: Jolanta Rutkowska, Roman Dabrowski, S. S. Keast, Zbigniew Raszewski, W. Drzewiński, M. E. Neubert
Publikováno v: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 301:195-201
Seven two ring chiral benzoates with different terminal substituents being isotropic liquids or low temperature monotropic compounds were tested as dopants inducing ferroelectricity in non-chiral Sc mixtures composed from esters. It was found that so
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4da794164320b26f1d1f2111e924946c
https://doi.org/10.1080/10587259708041767
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4
Observation of the Smectic-C—Smectic-ICritical Point
Autor: D. S. Shankar Rao, John W. Goodby, S. Krishna Prasad, S. Chandrasekhar, M. E. Neubert
Publikováno v: Physical Review Letters. 74:270-273
We report the first observation of the smectic C--smectic I (C--I) critical point by Xray diffraction studies on a binary system. This is in confirmity with the theoretical idea of Nelson and Halperin that coupling to the molecular tilt should induce
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c2bc6b2c887f3ac2bc6c23fdb8ed4e3
https://doi.org/10.1103/physrevlett.74.270
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5
An Experimental Study of the Smectic A-Smectic C Transitions in Monolayer, Partially Bilayer and Bilayer Systems
Autor: S. Krishna Prasad, M. E. Neubert, Gerd Heppke, S. Chandrasekhar, V. N. Raja, D. S. Shankar Rao
Publikováno v: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 238:241-247
The smectic A-smectic C (A-C) transition in several compounds has been shown to be mean-field-like (MF) with a substantial tricritical crossover effect. However, a simple MF behaviour, i.e., with negligible tricritical influence, had not been reporte
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d63ad46004514f9e857d6ab3ab8a97a
https://doi.org/10.1080/10587259408046931
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6
Effect of the I*phase temperature range on the nature of the tilted fluid to hexatic transition
Autor: D. S. Shankar Rao, John W. Goodby, V. N. Raja, S. Krishna Prasad, M. E. Neubert
Publikováno v: Ferroelectrics. 121:235-245
High precision layer spacing measurements have been carried out in the C* and I* phases of a number of compounds. The results suggest that the temperature range of the I* phase influences the nature of the tilted fluid to hexatic transition. For smal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5c592c431340bd91cc19757e067c1fd
https://doi.org/10.1080/00150199108217628
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8
The Effect of Carbonyl Containing Terminal Chains on Mesomorphic Properties in 4,4′- Disubstituted Phenylbenzoates and Phenylthiobenzoates. 4. Phenylbenzoates Containing A (CH2)nCO2R'Group (n = 0–2) on the Phenolic End
Autor: M. E. Neubert, K. Leung, M. R. Jirousek, M. C. Ezenyilimba, S. Sabol-keast, B. Ziemnicka-merchant, R. B. Sharma
Publikováno v: Molecular Crystals and Liquid Crystals. 197:21-41
The effect of a (CH2),CO2R' group on the mesomorphic properties of the esters where X= alkyl or alkoxy, Y=(CH2)nCO2R'(R'=C7 and C9) and n = 0–2 has been studied by synthesizing these esters and determining their mesomorphic properties by hot-stage
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1871192691b5cb17459d96eef8f1246c
https://doi.org/10.1080/00268949108029700
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9
A Reassessment of the Trends in Mesomorphic Properties Observed in 4,4'-Alkylalkoxyphenylbenzoates
Autor: M. E. Neubert, Y. Dixon-Polverine, C.-C. Tsai, T. T. Blair, M. Tsai
Publikováno v: Molecular Crystals and Liquid Crystals. 182:269-286
Transition temperatures for all known 4,4'-alkyl/alkoxyphenylbenzoates were collected into a computer data base. Trends in mesomorphic properties in these esters were reevaluated by comparing line graphs of melting and clearing temperatures and bar g
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dda3890392303ebb876a3a2fb5fb6777
https://doi.org/10.1080/00268949008035758
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10
Calorimetric study of the nematic to smectic-A and smectic-A to smectic-C phase transitions in liquid-crystal-aerosil dispersions
Autor: A, Roshi, G S, Iannacchione, P S, Clegg, R J, Birgeneau, M E, Neubert
Publikováno v: Physical review. E, Statistical, nonlinear, and soft matter physics. 72(5 Pt 1)
A high-resolution calorimetric study has been carried out on nanocolloidal dispersions of aerosils in the liquid crystal 4-n-pentylphenylthiol-4'-n-octyloxybenzoate (8S5) as a function of aerosil concentration and temperature spanning the smectic-C t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::fcab84c320fe0e401eb84dee2791a9c8
https://pubmed.ncbi.nlm.nih.gov/16383629
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