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Self-Assembling of Colloidal Particles Dispersed in Mixture of Ethanol and Water at the Air-Liquid Interface of Colloidal Suspension at Room Temperature 下载免费PDF全文
Self-assembling of colloidal particles dispersed in a mixture of ethanol and water at the air-liquid interface of the colloidal suspension at room temperature is investigated, and a method of rapidly assembling colloidal particles is proposed. By this method, a uniform colloidal crystal thin film over ten square centimeters in area can be fabricated in lOmin without special facilities and heating the suspension. SEM images and a normal incidence transmission spectrum of the sample show that the colloidal crystal film fabricated by this method is of high quality. In addition, this method is very suitable for fabricating colloidal crystal heterostructures. 相似文献
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利用对称性理论,分析了五次对称准晶的非线性弹性性质,计算了五次准晶的二个Laue类所有的三阶弹性常数,结果表明Laue 11(55)具有72个独立三阶弹性常数(12个属于声子场,10个属于相位子场,24个属于声子一声子相位子耦合场,26个属于声子相位子相位子耦合场);Laue12(5m,52,^5m)具有43个独立的三阶弹性常数,(10个属于声子场,5个属于相位子场,12个属于声子声子相位子耦合场,16个属于声子-相位子-相位子耦合场),由此可知:五次准晶的(二阶声子)非线性弹性性质和与声子、相位子耦合有关的线性弹性性质都展现了准晶的各向异性。 相似文献
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在pH 9.0的PBS介质中葡萄糖与亚甲基蓝反应,使亚甲蓝荧光猝灭。若换用β-环糊精/亚甲基蓝荧光探针,则体系的荧光猝灭强度大大提高。葡萄糖的质量浓度在0.02~26mg·L-1之间与其荧光强度呈线性关系,检出限(3S/N)为0.002mg·L-1。据此,建立了以β-环糊精/亚甲基蓝为荧光探针直接测定葡萄糖的荧光分析方法。该体系最大激发波长为660nm,最大发射波长为678nm。加标回收率在97.4%~101%之间,测定值的相对标准偏差(n=5)在均小于2.5%。 相似文献
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