Spiral Crystal Growth of Potassium Dichromate in Gelatin
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概要
- 論文の詳細を見る
Huge spiral crystals of potassium dichromate (K_2Cr_2O_7) have been found to grow three-dimensionally in a gelatin medium when gelatin containing K_2Cr_2O_7 was dried slowly in a test tube at a low temperature. These spirals were all right-handed, and their widths, axial pitches and lengths were 2-3 mm, 5-6 mm and 20-25 mm, respectively. When the gelatin concentration in the medium was decreased, ordinary plate-like crystals were observed to grow, instead of the spiral crystals. To the best of our knowledge, inorganic compounds such as K_2Cr_2O_7 have so far not been reported to form such huge spiral crystals. It is conjectured that collagen molecules, which compose the gelatin medium and have right-handed triple helix structure lead to the growth of spiral crystals.
- 社団法人日本物理学会の論文
- 1995-02-15
著者
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Suda Jun-ichiro
Department Of General Education Sasebo National College Of Technology
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Suda Jun-ichiro
Department Of Genera Education Sasebo National College Of Technology
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Matsushita Mitsugu
Department Of Physics
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