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松村 誠一, 安達 正芳, 水野 章敏, 渡辺 匡人, 小原 真司
原稿種別: 本文
2005 年 32 巻 3 号 p.
217-
発行日: 2005/08/17
公開日: 2017/05/31
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Structural study on the BBO (BaB_2O_4) melts including the undercooled state and the glassy state have been performed by using the high-energy x-ray diffraction method combined with the conical nozzle gas-flow levitation technique (CNL). In this study, the CNL apparatus for the high temperature liquid sample was optimized for the x-ray diffraction experiments. The obtained structure factors, S(Q)'s, of the BBO show no significant changes for the temperature dependence in the liquid state even for the undercooled state. On the other hand, the S(Q) of the BBO glass was slightly different as for the position of the first peak with the liquid states.
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小澤 貴徳, 佐々木 紀之, 溝田 孝夫, 霜村 攻
原稿種別: 本文
2005 年 32 巻 3 号 p.
218-
発行日: 2005/08/17
公開日: 2017/05/31
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By using attention to electrical conductivity and temperature, the concentration measurement of the BBO solution which used NaCl as the solvent was performed. The concentration measurement control system which controls the degree of supersaturation using this is developed.
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加納 愛, 野呂 仁美, 吉村 政志, 森 勇介, 佐々木 孝友, 桂 智毅, 小島 哲夫, 西前 順一
原稿種別: 本文
2005 年 32 巻 3 号 p.
219-
発行日: 2005/08/17
公開日: 2017/05/31
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We show that long-time heat treatment is necessary to adequately remove water molecules from the CLBO crystal volume. The reduction in amount of water molecules had improved the transmittance of the crystal at 266nm. In addition, the pre heat-treated crystal was able to generate about three-times higher UV power without bulk damage than non heat-treated one.
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小島 孝広, 筒井 紀彰, 西村 鈴香, 寺嶋 一高
原稿種別: 本文
2005 年 32 巻 3 号 p.
220-
発行日: 2005/08/17
公開日: 2017/05/31
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Li_2B_4O_7(LBO) crystal is a piezo-electric crystal and it is used as a surface acoustic wave (SAW) devices. Even though the scatterers exist in the SAW grade crystals, large size scale crystals are grown by the vertical Bridgman method. The crystal of the high quality without the scatterers compared with the SAW crystal is necessary for the optical crystal. We found the growth method of controlling the scatterers, and then evaluated the crystal without the scatterers. It has been found that the crystal quality varied widely depending on the ambient during the growth process.
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福田 真行, 小松 隆一, 池田 攻, 藤野 茂
原稿種別: 本文
2005 年 32 巻 3 号 p.
221-
発行日: 2005/08/17
公開日: 2017/05/31
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High quality LiKB_4O_7 single crystal has been successfully grown by the CZ method. Grown crystal was transparent and no included macroscopic defects such as inclusions. It had a wide transparency from 190nm to 3500nm.
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城 勇介, 小松 隆一, 池田 攻
原稿種別: 本文
2005 年 32 巻 3 号 p.
222-
発行日: 2005/08/17
公開日: 2017/05/31
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MgO:Li_2B_4O_7 single crystals have been successfully grown by the CZ method. However the content of MgO in a grown single crystal was less than 0.05mol% because of the formation of Mg_2B_2O_5 in a growing crystal. Optical properties are also examined.
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村田 壮介, 柳谷 伸一郎, 森 篤史, 鈴木 良尚, 田村 勝弘, 井上 哲夫
原稿種別: 本文
2005 年 32 巻 3 号 p.
223-
発行日: 2005/08/17
公開日: 2017/05/31
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A literature Takasu [Grystal Growth Handbook, p.42, Kyoritsu shuppann, 1995 (in Japanes)] suggested that the Curie temperature was varied depending on the thermal history of the solution, whether it had been experienced at a higher temperature than the Curie point 49℃ or not. Overheating treatment was conducted in a temperature range above 49℃. So we re-examined this problem in this study.
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霜村 攻, 相良 昌也, 中谷 大亮, 溝田 孝夫
原稿種別: 本文
2005 年 32 巻 3 号 p.
224-
発行日: 2005/08/17
公開日: 2017/05/31
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Measurement system of urea concentration and ratio of solvent in urea aqueous solution containing NH_4Cl by means of temperature, electrical conductivity and refractive index was developed. Both concentration and ratio were able to measure with error within 1%.
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A. Van Driessche, G. Sazaki, F. Otalora, E. Yokoyama, K. Tsukamoto, K. ...
原稿種別: 本文
2005 年 32 巻 3 号 p.
225-
発行日: 2005/08/17
公開日: 2017/05/31
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We measured the step velocities of 2D islands on {110} faces of tetragonal lysozyrne crystals at different temperatures and supersaturations. We compared them to those obtained by atomic force microscopy (AFM) and interferometry, and attempted to discus the differences.
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佐崎 元, 矢井 里美, 塚本 勝男, 中嶋 一雄
原稿種別: 本文
2005 年 32 巻 3 号 p.
226-
発行日: 2005/08/17
公開日: 2017/05/31
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We successfully observed dislocations and relatively large inclusions inside lysozyme crystals during growth using advanced optical microscopy for the first time. Dislocations were generated in bundles, probably at the periphery of the relatively large inclusions. We also observed the dissolution process of the crystal. Critical undersaturation for point-bottomed etch pits (dislocations) was definitely smaller than that for flat-bottomed ones (micro-defects).
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佐崎 元, 塚本 勝男, 横山 悦郎, 中嶋 一雄
原稿種別: 本文
2005 年 32 巻 3 号 p.
227-
発行日: 2005/08/17
公開日: 2017/05/31
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We applied forced flow to {110} surfaces of tetragonal lysozyme crystals, and observed the growth of spiral growth hillocks in situ using a laser confocal microscope combined with a differential interference contrast microscope. We found that forced flow drastically enhance the transport of impurity to the crystal surface and developed bunched steps all over the crystal surface.
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鈴木 良尚, 佐崎 元, 松本 雅光, 永澤 眞, 中嶋 一雄, 田村 勝弘
原稿種別: 本文
2005 年 32 巻 3 号 p.
228-
発行日: 2005/08/17
公開日: 2017/05/31
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We have observed elementary growth steps of glucose isomerase (GI) crystals by using a laser confocal-diferencial interference contrast microscope at 45MPa, for the first time. Growth mode of the GI crystals at 45MPa was a two-dimensional (2D) nucleation growth mode of a poly-nucleation type. Both step growth rates and 2D nucleation rates increased with increasing pressure.
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古田 憲司, 奥津 哲夫, 平塚 浩士
原稿種別: 本文
2005 年 32 巻 3 号 p.
229-
発行日: 2005/08/17
公開日: 2017/05/31
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We show through hen egg-white lysozyme nucleation experiments under light produced by 300W continuous Xe lamp that nucleation is enhanced. The metastable lysozyme solution (2mg mL^<-1>) irradiated in NaCl (1.4M) at pH 4.3, β=2.0, about 60s appeared the number of lysozyme crystals in one droplet. We propose the following mechanism: intermediates produced by one photon absorption produce lysozyme radicals, which enhanced nucleation.
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近田 恵美, 鈴木 良尚, 本同 宏成, 田村 勝弘
原稿種別: 本文
2005 年 32 巻 3 号 p.
230-
発行日: 2005/08/17
公開日: 2017/05/31
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Solubility of the triclinic hen egg-white lysozyme was measured at 0.1 and 100MPa. The solubility increased with increasing temperature and pressure. The enthalpy of dissolution ΔH decreased with increasing pressure. The volume change accompanying the dissolution ΔV took a negative value.
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吉崎 泉, 栄 龍, 足立 聡, 小松 啓, 小泉 晴比古, 橘 勝, 小島 謙一, 松浦 良樹, 福山 誠二郎
原稿種別: 本文
2005 年 32 巻 3 号 p.
231-
発行日: 2005/08/17
公開日: 2017/05/31
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The rocking curve width of tetragonal lysozyme crystals were measured. Typical full width half maximum (FWHM) of the rocking curve of crystals grown from a pure lysozyme solution were 0.004-0.006°, while those crystals containing 5% lysozyme dimer were 0.006-0.010°. X-ray topography experiments revealed that dislocations existed in crystals containing lysozyme dimer. Point bottomed etch pits were observed in contaminated crystals, but hardly no deep pits were observed in pure crystals. These dislocations are one of the causes of rocking width broadening.
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小泉 晴比古, 橘 勝, 小島 謙一
原稿種別: 本文
2005 年 32 巻 3 号 p.
232-
発行日: 2005/08/17
公開日: 2017/05/31
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Longitudinal and transverse sound velocity of cross-linked tetragonal hen egg-white (HEW) lysozyme crystals was measured by ultrasonic pulse-echo method.
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大道 弘明, 松浦 良樹, 藤原 敏道, 阿久津 秀雄
原稿種別: 本文
2005 年 32 巻 3 号 p.
233-
発行日: 2005/08/17
公開日: 2017/05/31
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Magnetic relaxation time of water protons in lysozyme crystals were measured by NMR method, and the results were compared to the distribution of Debye-Waller factors obtained from X-ray analysis.
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村井 良多, 中田 慎也, 柏井 将文, 安達 宏昭, 高野 和文, 村上 聡, 松村 浩由, 井上 豪, 森 勇介, 佐々木 孝友
原稿種別: 本文
2005 年 32 巻 3 号 p.
234-
発行日: 2005/08/17
公開日: 2017/05/31
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We developed a temperature screening system, which we call TAON (Temperature At ONce). Using a batch method, we demonstrated multitemperature conditions on one plate. TAON enables us to easily construct a solubility phase diagram and to search for the optimum temperature for crystal growth using microscale samples.
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吉崎 泉, 足立 聡, 小松 啓, 福山 誠二郎
原稿種別: 本文
2005 年 32 巻 3 号 p.
235-
発行日: 2005/08/17
公開日: 2017/05/31
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The rocking curve width of apoferritin octahedral crystal and skeletal crystal were measured. Full width half maximum of both crystals were the same.
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小林 亮, 手老 篶史, 中垣 俊之
原稿種別: 本文
2005 年 32 巻 3 号 p.
236-237
発行日: 2005/08/17
公開日: 2017/05/31
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Experiments of cell fusion and partial separation of the plasmodium of Physarum polycephalum is demonstrated. We introduce a mathematical model of coupled oscillator system with one conserved quantity, which will reproduce the experimental results well qualitatively.
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西森 拓
原稿種別: 本文
2005 年 32 巻 3 号 p.
238-
発行日: 2005/08/17
公開日: 2017/05/31
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A Simple model for the dynamics of dunes is introduced. In spite of its simplicity, the formation processes of various types of dunes are realized according to several environmental factors, and because of the simplicity, the application to more complex regimes are made possible by adding proper optional dynamics. As an example, here, the extension of the model to that including vegetation process, is shown. Moreover, the relation between observations, simulations and recently initiated water-tank experiments is explained.
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三村 昌泰
原稿種別: 本文
2005 年 32 巻 3 号 p.
239-
発行日: 2005/08/17
公開日: 2017/05/31
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In 1995, It is observed by Budrene and Berg[1] that chemotactic bacteria (E. coli) form complex but somehow ordered colonial patterns which are called "chevron"-like patterns. They emphasized that such patterns are generated in self-organized way due to the suitable balance among (1) substrate consumption, (2) cell proliferation, (3) excretion of attractant and (4) chemotactic motility. It is shown in this talk that a mesoscopic model describing colonial formation of bacteria reveals how these four elements generate such patterns in a self-organized way.
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入澤 寿美
原稿種別: 本文
2005 年 32 巻 3 号 p.
240-241
発行日: 2005/08/17
公開日: 2017/05/31
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To understand the process of the crystal growth of the binary system, we simulated the lattice system. One of the simulations can analyze segregation phenomena of impurities to melt growth. Another simulation is crystal growth of the binary system in the dilute ambient phase. It reports on a part of the result.
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山本 隆夫, 野辺 正紘, 土橋 敏明
原稿種別: 本文
2005 年 32 巻 3 号 p.
242-243
発行日: 2005/08/17
公開日: 2017/05/31
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The characteristic processes of gelation and liquid crystalline (LC) formation in the dialysis of curdlan solution have been observed under crossed nicols. On the basis of the Ca^<2+> and the OH^- ion diffusions a simple theory for the time development of the thickness of the LC layer was developed.
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車田 真実, 新宅 正行, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
244-
発行日: 2005/08/17
公開日: 2017/05/31
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Needle-shape crystals of molybdenum oxide were selectively produced under low oxygen partial pressure. The trasmission electron microscope (TEM) observation and infrared (IR) spectroscopy reavealed that this crystal is nonstoichiometric phases which is simpler structure than the stoichiometric MoO_3 phase structure.
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梶川 裕矢, Indra Astuti, 辻 佳子, 野田 優
原稿種別: 本文
2005 年 32 巻 3 号 p.
245-
発行日: 2005/08/17
公開日: 2017/05/31
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Island formation processes in the initial stage of vapor deposition have provoked an interest for a long time due to fundamental interest and technological importance. However, the high growth rates of sputtering process often hamper a detailed investigation. In this work, we applied combinatorial masked deposition (CMD) method to investigate the initial stage of Ir and Ag deposition by sputtering. The dependence of island growth characteristics on deposition flux was investigated, and different flux dependence between Ir and Ag was observed.
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深見 一弘, 中西 周次, 山崎 はるか, 中戸 義禮
原稿種別: 本文
2005 年 32 巻 3 号 p.
246-
発行日: 2005/08/17
公開日: 2017/05/31
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Electrodeposition of tin (Sn) under diffusion-limited condition showed a spontaneous potential oscillation together with the formation of highly ordered latticework structures, which grew vertically from the substrate. In-situ optical microscopic inspection revealed that the latticeworks are formed in synchronization with the potential oscillation.
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熊本 明仁, 新宅 正行, 車田 真実, 城戸 修, H. Suzuki, 和田 節子, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
247-
発行日: 2005/08/17
公開日: 2017/05/31
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The crystallization process of amorphous carbons both filmy quenched carbonaceous composite (f-QCC) and commercial Asahi Cokes mesophase (mesophase) have been studied by in-situ method in high resolution transmission electron microscopic method. The characteristic structure alterations were seen about 300℃ and 800℃ for the f-QCC and the mesophase.
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新宅 正行, 鈴木 仁志, 車田 真実, 齋藤 嘉夫, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
248-
発行日: 2005/08/17
公開日: 2017/05/31
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Carbon particles and carbon particles embedded Pt clusters were different morphological alteration by heating the sample in air. Carbon tube or ribbon-like spherules were predominantly produced by heating carbon particles. If the Pt clusters were embedded, carbon particles were coalesced and changed to the onion-like carbon coating Pt cluster.
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森谷 健司, 新宅 正行, 車田 真美, 鈴木 仁志, 齋藤 嘉夫, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
249-
発行日: 2005/08/17
公開日: 2017/05/31
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A recently developed experimental method of producing quantum dots covered with a carbon layer has been applied to Ni and Sn clusters to make carbon-coated materials. Ni clusters with the size of 2〜40nm embedded in amorphous carbon with size of 10nm order have been selectively produced by control of inert gas pressure. Sn clusters having the low melting points were also produced with the size of 5〜50nm embedded in amorphous carbon.
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勝山 暢, 新宅 正行, 城戸 修, 鈴木 仁志, 齋藤 嘉夫, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
250-
発行日: 2005/08/17
公開日: 2017/05/31
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The metallic clusters covered with insulator layer have been produced for Ag and Pb by the gas evaporation method. The comet-like particles were obtained only in the eutectic system of Ag-Si on the sufficient amount of SiO powder mixture against Ag powder. The metallic clusters less than a few nm covered with SiO layer were produced. The formation of Pb clusters covered with insulator layer may open the new nanoparticle application against noble metal.
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下総 晃人, 陸 亨, 城戸 修, 鈴木 仁志, 斎藤 嘉夫, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
251-
発行日: 2005/08/17
公開日: 2017/05/31
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The alteration of Ga smoke particles to GaN particles in the plasma field of mixture gasses of nitrogen and helium have been studied by the transmission electron microscopy. The size of Ga drop and amounts of exited nitrogen clearly influenced the single crystalline nanoparticle growth. Small crystallites with zincblende structure were frequency included in a wurtize particle. If the nitrogen partial pressure become 10 Torr, emergence of the perfect single particles can be found less than 30nm size.
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鈴木 仁志, 佐藤 岳志, 新宅 正行, 陸 亨, 下総 晃人, 渡部 明, 富田 正弘, 墻内 千尋
原稿種別: 本文
2005 年 32 巻 3 号 p.
252-
発行日: 2005/08/17
公開日: 2017/05/31
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Oxidation process of Tin particles with the size of nanometer order produced by vacuum deposition on an amorphous carbon film was observed without an exposure to air by using a special shutter holder attached a transmission electron microscope. Structure of the surface oxide layers varied depending on the size of particles. Size dependence on oxide layer formation was discussed as the difference of thermal transportation ratio to the carbon substrate.
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大場 点, 渡邊 雅代, 塩澤 竜生, 池田 孝道
原稿種別: 本文
2005 年 32 巻 3 号 p.
253-
発行日: 2005/08/17
公開日: 2017/05/31
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Improvements of the shape of the crucible and adjustments of the temperature conditions using thermal simulations was done to obtain large size calcium fluoride single crystals without grain boundaries and any inclusions. Although grown crystals have subgrain structures, its optical properties, index homogeneity and stress birefringence, are good for optical uses.
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樋口 幹雄, 清水 俊行, 高橋 順一, 小川 貴代, 和田 智之
原稿種別: 本文
2005 年 32 巻 3 号 p.
254-
発行日: 2005/08/17
公開日: 2017/05/31
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Nd: LuVO_4 single crystals were successfully grown by the floating zone method. All the grown crystals had no macroscopic defects such as inclusions and low-angle grain boundaries but contained growth striations. The effective distribution coefficient of Nd in LaVO_4 was estimated to be about 0.5. In the laser oscillation experiments, a slope efficiency of 77% was obtained for the Nd 1 at%-doped crystal by pumping with a π-polarized beam at 880nm.
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荒井 康智, 余野 建定, 石川 毅彦, 依田 眞一
原稿種別: 本文
2005 年 32 巻 3 号 p.
255-
発行日: 2005/08/17
公開日: 2017/05/31
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A new technique produces for forming spherical like Al_2O_3 crystal (ca. 2mm diameter) by an aerodynamic levitator by applying the uni-directional solidification method at 60mm/hr growth rates. The X-ray Laue experimental results indicate the growth direction was along the c-axis of a sapphire.
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増井 敏行, 金 榮云, 田村 真治, 今中 信人
原稿種別: 本文
2005 年 32 巻 3 号 p.
256-
発行日: 2005/08/17
公開日: 2017/05/31
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Single crystals of δ-Al_2O_3 were successfully grown for the first time by the dc electrolysis of the Al^<3+> ion conducting Al_2(MoO_4)_3 solid electrolyte at 11V, 900℃. It becomes possible to artificially grow such an intermediate phase as δ-Al_2O_3, because it is not necessary to heat the starting material above the melting point of alumina.
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黄 新明, 黄 晋二, 宇田 聡
原稿種別: 本文
2005 年 32 巻 3 号 p.
257-
発行日: 2005/08/17
公開日: 2017/05/31
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Imposing a 600V/cm electric field on the system of La_2O_<3^->Ga_2O_<3^->SiO_2 moved boundary of langasite (La_3Ga_5SiO_<14>) field toward La_2O_3 approximately by 3mol%. As a result, transformation of langasite from incongruent to congruent state was realized successfully, which demonstrated that the equilibrium phase relationship could be manipulated by the external electric field.
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太子 敏則, 加藤 健太郎, 林 貴之, 遠藤 尚之, 番場 教子, 深海 龍夫, 干川 圭吾
原稿種別: 本文
2005 年 32 巻 3 号 p.
258-
発行日: 2005/08/17
公開日: 2017/05/31
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Langataite single crystals were grown by vertical Bridgman method and its electrical properties were investigated. A brown-colored langataite crystal 1 inch in diameter could be grown from stoichiometric langataite melt in air. The resistivity of the grown crystal were slightly higher than that grown by conventional Czochralski method
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Zhenxiang Cheng, C.V. Kannan, Kiyoshi Ozawa, Akimitsu Miyazaki, Hideo ...
原稿種別: 本文
2005 年 32 巻 3 号 p.
259-
発行日: 2005/08/17
公開日: 2017/05/31
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Samarium doped bismuth titanate thin films with different orientations were fabricated by pulse-laser-ablated method. A ferroelectric random access memory (FeRAM) with a structure of Au/Sm:BTO/Pt(111)/Ti/SiO2/Si(100) was fabricated to assess the ferroelectric performance of these different orientated Sm:BTO films.
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墻内 孝祐, 柳谷 伸一郎, 森 篤史, 井上 哲夫
原稿種別: 本文
2005 年 32 巻 3 号 p.
260-
発行日: 2005/08/17
公開日: 2017/05/31
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In our previous works, the both processes of purification of vacuum sublimation and zone refining were needed to grow a transparent crystal from the melt of 4N PbBr_2. In this work, we have found a method to grow a transparent crystal from the melt and/or vapor from the 4N material without zone refining in this work.
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島田 亙, 海老沼 孝郎, 鎌田 慈, 長尾 二郎, 竹谷 敏, 成田 英夫
原稿種別: 本文
2005 年 32 巻 3 号 p.
261-
発行日: 2005/08/17
公開日: 2017/05/31
ジャーナル
フリー
We carried out in situ observations of methane gas clathrate hydrate (CH_4 hydrate) during dissociation using a confocal scanning microscope under CH_4 gas atmospheric pressure and isothermal conditions between 170 and 268K. Above 193K, many small ice particles covered the hydrate surface. These ice particles changed to ice sheet which covered the hydrate surface with time above 230K. We conclude that the formation of the ice sheet prevent CH_4 gas diffusion to atmosphere.
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丸山 稔
原稿種別: 本文
2005 年 32 巻 3 号 p.
262-
発行日: 2005/08/17
公開日: 2017/05/31
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フリー
We found asymmetry; (1) vicinal surfaces decay in growth but develop in melting; (2) rough orientations grow with decreasing curvature but melt with increasing curvature.
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Salvador Zepeda, 古川 義純, 横山 悦郎
原稿種別: 本文
2005 年 32 巻 3 号 p.
263-
発行日: 2005/08/17
公開日: 2017/05/31
ジャーナル
フリー
Growth steps on ice/water interface growing in the supercooled solution of Antifreeze Glycoprotein (AFGP) were observed in situ using a phase contrast microscope under the gravity and microgravity conditions. Periodical change of the activities of step migrations was clearly observed. This phenomenon relates the periodic change of growth rate observed for the one-directional growth of prismatic plane of ice in the AFGP solution. Furthermore, the migration velocities of growth steps were decreased under the microgravity condition compared of that under the gravity condition.
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中谷 浩之, Salvador Zepeda, 宇田 幸弘, 古川 義純, 横山 悦郎, 松本 秀一朗
原稿種別: 本文
2005 年 32 巻 3 号 p.
264-
発行日: 2005/08/17
公開日: 2017/05/31
ジャーナル
フリー
One-directional growth of ice crystal was carried out from the solution of Antifreeze Glycoprotein (AFGP). The AFGP molecules were labeled by fluorescing substances, and the distribution of AFGP molecules around the growing ice/water interface was observed in-situ using a fluorescent imaging system combined with phase contrast microscope. Analyzing the fluorescent images, the diffusion field in front of the interface, adsorption on the interface and the incorporation into the crystal were discussed.
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灘 浩樹
原稿種別: 本文
2005 年 32 巻 3 号 p.
265-
発行日: 2005/08/17
公開日: 2017/05/31
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フリー
Molecular dynamics simulations of ice-water interfaces at a temperature just below the real melting point at 1 atm are carried out using a new potential model of H_2O, which we recently proposed for simulations of ice and water. For the first time, the growth of ice near the real melting point at 1 atm is clearly observed in the present simulation. Structures of the interfaces and the growth kinetics of ice at the interfaces are analyzed on a molecular scale.
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今井 宏明, 緒明 佑哉
原稿種別: 本文
2005 年 32 巻 3 号 p.
266-
発行日: 2005/08/17
公開日: 2017/05/31
ジャーナル
フリー
A novel type of hierarchically organized superstructure emerged from an exquisite association of inorganic crystals and organic polymers. We prepared K_2SO_4 by evaporation of an aqueous solution containing poly (acrylic acid). The resultant crystals included five different tiers from nanoscopic to macroscopic.
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中村 仁, 今井 宏明
原稿種別: 本文
2005 年 32 巻 3 号 p.
267-
発行日: 2005/08/17
公開日: 2017/05/31
ジャーナル
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We investigated the influence of EDTA on the anisotropic growth of silver crystals in aqueous solution systems. An increase in the EDTA concentration changed the morphology of the crystals from polyhedrons into plates and wires. The morphological evolution is ascribed to stepwise adsorption of EDTA on the specific faces of silver crystals.
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伊勢 隆太, 今井 宏明
原稿種別: 本文
2005 年 32 巻 3 号 p.
268-
発行日: 2005/08/17
公開日: 2017/05/31
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We prepared CuSO_4・5H_2O crystals in a gelatin solution by evaporation of water. As the gel density increased, morphological evolution occurred and unique morphologies, such as snaky and lattice shapes, were observed under a diffusion-limited condition. The formation of these unique morphologies is ascribed to curved growth of twisted twin crystals consisting of tilted units.
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虻川 伸也, 塚本 勝男, 西村 良浩, 横山 悦郎, Christine V. Putnis
原稿種別: 本文
2005 年 32 巻 3 号 p.
269-
発行日: 2005/08/17
公開日: 2017/05/31
ジャーナル
フリー
Replacement reaction was induced by reacting KCl saturated solution in contact with pure KBr crystal. The interface concentration of the solution was measured by interferometry. The composition of aqueous solution was Cl rich when solid solution, which was Br rich, began to precipitate.
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