HIGH-RESOLUTION TRANSMISSION ELECTRON MICROSCOPY OF POLYMER CRYSTALS
スポンサーリンク
概要
- 論文の詳細を見る
High-resolution electron microscopic(HREM)observation with a transmission electron microscope(TEM)is a powerful experimental method to clarify complicated fine structures, if specimens can endure electron irradiation. Though polymer crystals are very sensitive to electron irradiation, it has turned out possible to observe them by high-resolution electron microscopy at molecular dimensions. If we perform our experiment carefully enough, the resolution limit predicted from the durability against radiaton damage can be achieved even for the polymer crystals. One should recognize that HREM images are composed of lattice frings which are formed by the interference between unscattered and scattered electron waves. Several factors determining performance of the TEM itself should be Known. Then the optical systems of the TEM must be aligned carefully and they must be stabilized before taking HREM image. Photographic films are still the best medium to record HREM images. In HREM observation of polymer crystals, reducing the total amount of electron dose given to ten specimen before taking an HREM photograph is the most important. A low-dose function which can focus the specimen at a position remote from the region to be photographed in the specimen is useful to reduce the radiation damage during focusing. The condition to record an HREM image is determined by the durability of each specimen against radiation damage. The method to increase the durability of a specimen to electron irradiation by cooling can improve the resolution limit of the specimen. HREM observation of the β-form single crystals of syndiotactic polystyrene is an example. Arrangement of molecular stems both in the solution-grown single crystal and in the melt-grown one was revealed by the HREM observation.
- 社団法人日本材料学会の論文
- 1998-06-15
著者
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Tsuji M
Kyoto Univ. Kyoto‐fu Jpn
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Tsuji M
Kyoto Univ. Kyoto Jpn
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Tsuji Masaki
Laboratory Of Polymer Condensed States Institute For Chemical Research
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Tsuji Masaki
Institute For Chemical Research Kyoto University
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TOSAKA Masatoshi
Institute for Chemical Research, Kyoto University
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KOHJIYA Shinzo
Institute for Chemical Research, Kyoto University
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TOSAKA Masatoshi
Laboratory of Polymer Condensed States, Institute for Chemical Research, Kyoto University
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KOHJIYA Shinzo
Laboratory of Polymer Condensed States, Institute for Chemical Research, Kyoto University
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Kohjiya S
Institute For Chemical Research Kyoto University
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Kohjiya Shinzo
Laboratory Of Polymer Condensed States Division Of States And Structures Iii Institute For Chemical
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Tsuji Masaki
Laboratory Of Polymer Condensed States Division Of States And Structures Iii Institute For Chemical
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Tosaka M
Institute For Chemical Research Kyoto University
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Tosaka Masatoshi
Laboratory Of Chemistry Of Polymeric Functionality Materials Institute For Chemical Research Kyoto U
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