Three-dimensional problems of the theory of elasticity: by A. I. Lur'e. Russian tram. by D. M. MoVean, edited by J. R. M. Radok. 494 pages, diagrams, 6 × 9 in. New York, John Wiley & Sons, Inc., 1964. Price, $16.00
✍ Scribed by H.D. Conway
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- English
- Weight
- 175 KB
- Volume
- 279
- Category
- Article
- ISSN
- 0016-0032
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✦ Synopsis
Reviews
conduction mechanism nor about the physical and chemical properties of these materials for a comprehensive treatise to be written at this time. At best, the principal value of a book in this field is as a source of a good bibliography with some brief comments about the significance of certain results. The authors have treated the subject matter in this way.
Six principal areas are discussed separately: 1) measurement techniques, 2) monomeric organic compounds (aromatic systems), 3) charge-transfer complexes, 4) electronic carbons (graphite), 5) polymers, and 6) biological systems. The sections on electronic carbons and polymers are treated most extensively and comprehensively. This is perhaps because they appear to be the principal areas of the authors' interests, and also because there is a better understanding of the mechanism of conduction in graphite than in the other organic semiconductors discussed in this book.
ORe weli-emphasized point about organic semiconductors is that most of the previous measurements have been made on material which is poorly characterized as to both chemical and physical properties. Measurements made in different laboratories, on supposedly similar material, differ by orders of magnitude. True, it is difficult to grow single crystals of weli-characterized material, but it is also true that this must be done before enough meaningful data are available to enable a mechanism for the conduction process to be developed.
The book is confined to a discussion of the semiconductive properties of organic compounds and omits material pertaining to photoconduction. This is somewhat unfortunate, because the two processes may be intimately related, and because most of the recent, significant advances in the field of aromatic organic conduction mechanisms have pertained to photoconduetion.
The authors include a discussion of the possible future uses of organic semiconductors. At this stage in the development of the field, such discussions arc more or less interesting conjecture.