[19p-H112-1~15] 15.1 Bulk crystal growth

[19p-H112-1] Observation of Stacking Faults in Silica Colloidal Crystals

〇yoshimasa ohki¹, Nakano yuji¹, kawanaka satoshi¹, imai hiroki¹, uchida fumio¹ (1.Fuji Chemical Co., Ltd)

Keywords:colloidal crystal,stacking fault,twin structure

Sedimentation grown silica colloidal crystals are examined by optical maicroscope, conforcal microscope and scanning electron microscope. Multi-layers of twin structure formed by repeating stacking faults induces stripe pattern in iridescence (Bragg reflection) of the colloidal crystal.