Chromatic Behavior and Evaluation of the Properties of Liquid Crystals Used as Stationary Phases in Gas Chromatography PDF Download
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Author: Joseph Fay Solsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
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Book Description
Author: Joseph Fay Solsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 187
Get Book Here
Book Description
Author: Joseph F. Solsky
Publisher:
ISBN:
Category :
Languages : en
Pages : 374
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Book Description
Author: George W. Gray
Publisher: John Wiley & Sons
ISBN: 3527613951
Category : Technology & Engineering
Languages : en
Pages : 522
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Book Description
This handbook is a unique compendium of knowledge on all aspects of the physics of liquid crystals. In over 500 pages it provides detailed information on the physical properties of liquid crystals as well as the recent theories and results on phase transitions, defects and textures of different types of liquid crystals. An in-depth understanding of the physical fundamentals is a prerequisite for everyone working in the field of liquid crystal research. With this book the experts as well as graduate students entering the field get all the information they need.
Author: Nasreen Jber
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659337994
Category :
Languages : en
Pages : 104
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Book Description
A fact of intermolecular reactions or interactions between the liquid crystal and the chromatographed substances is important for the understanding of the phenomena taking place in the chromatographic column. The structure of the molecules and their polarity and polarizability affect, as well as, the solubility of the chromatographed substances in the liquid crystal plays an important influence on the separation. The properties of the liquid crystal stationary phases depend both on the structure of the main chain of the molecule and on the terminal substituents which strongly affect the polarity of the molecules. However, an equally important or even greater effect on the chromatographic properties of liquid crystals is exerted by the lateral substituents. These substituents not only affect the intermolecular reactions between the liquid crystal and the chromatographed substance but also the liquid crystal - liquid crystal interactions. The lateral substituents also affect the selectivity of the liquid crystal owing to the changes they produce in the distance between its molecules.
Author: Sandeep Kumar
Publisher: CRC Press
ISBN: 1439811458
Category : Science
Languages : en
Pages : 512
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Book Description
The self-contained properties of discotic liquid crystals (DLCs) render them powerful functional materials for many semiconducting device applications and models for energy and charge migration in self-organized dynamic functional soft materials. The past three decades have seen tremendous interest in this area, fueled primarily by the possibility
Author: John W. Goodby
Publisher:
ISBN:
Category :
Languages : en
Pages : 526
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Book Description
Author: Arthur N. Chester
Publisher: Springer Science & Business Media
ISBN: 1468491512
Category : Science
Languages : en
Pages : 492
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Book Description
The Nato Advanced Study Institute "Phase Transitions in Liquid Crystals" was held May 2-12, 1991, in Erice, Sicily. This was the 16th conference organized by the International School of Quantum Electronics, under the auspices of the "Ettore Majorana" Centre for Scientific Culture. The subject of "Liquid Crystals" has made amazing progress since the last ISQE Course on this subject in 1985. The present Proceedings give a tutorial introduction to today's most important areas, as well as a review of current results by leading researchers. We have brought together some of the world's acknowledged experts in the field to summarize both the present state of their research and its background. Most of the lecturers attended all the lectures and devoted their spare hours to stimulating discussions. We would like to thank them all for their admirable contributions. The Institute also took advantage of a very active audience; most of the students were active researchers in the field and contributed with discussions and seminars. Some of these student seminars are also included in these Proceedings. We did not modify the original manuscripts in editing this book, but we did group them according to the following topics: 1) "Theoretical Foundations"; 2) "Thermotropic Liquid Crystals"; 3) "Ferroelectric Liquid Crystals"; 4) "Polymeric Liquid Crystals"; and 5) "Lyotropic Liquid Crystals".
Author: Ingo Dierking
Publisher: John Wiley & Sons
ISBN: 3527605274
Category : Technology & Engineering
Languages : en
Pages : 230
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Book Description
A unique compendium of knowledge on all aspects of the texture of liquid crystals, providing not just detailed information on texture formation and determination, but also an in-depth discussion of different characterization methods. Experts as well as graduates entering the field will find all the information they need in this handbook, while the magnitude of the color images make it valuable hands-on-reference.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Earlier studies have shown that a static electric field across a capillary column increased the apparent capacity ratio (measured from the peak maximum) of a liquid crystal stationary phase and produced a more nearly Gaussian-shaped peak plus a small step on the front of the peak. The present study has qualitatively confirmed those effects using cholesteryl laurate, cholesteryl 10-undecenoate, and cholesteryl benzoate and suggests that they may be found for all cholesteric liquid phases. In addition, the peak-fronting phenomenon was found to be a function of both the carrier gas and the applied column potential. Fragmentation of the solute and/or the stationary phase by carrier gas molecules in metastable excited states is proposed to explain the fronting phenomenon. Hysteresis effects have also been observed, indicating that the liquid crystals may take hours to return to their original orientations after imposition or removal of an electric field.
Author: Patricia Cladis
Publisher: CRC Press
ISBN: 9789056996499
Category : Science
Languages : en
Pages : 490
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Book Description
During his distinguished scientific career, Alfred Saupe made important contributions to liquid crystal research, laying the groundwork on which much of the current knowledge and research in the physics of liquid crystals is based. This volume features papers presented by Prof. Saupe's colleagues, students and friends at a festschrift in honor of his 70th birthday. In addition, a selection of Prof. Saupe's articles are reprinted in the original German and in English translation, offering the reader a unique opportunity to see both the early work of this important scientist and widespread effect of that work on later discoveries in liquid crystal physics.
