In Situ Visualization of Layer Transitions during Convective Self-Assembly in a Sessile Drop

Li Gao; Qing Feng Yan; C.C. Wong; Yet Ming Chiang

doi:10.4028/www.scientific.net/AMR.31.117

Paper Titles

Investigation of Intersubband Transition in GaAs/AlGaAs Quantum Well Infrared Photodetectors
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Growth of GaN Nano-Column on Si (111) Substrate Using Au+Ga Alloy Seeding by Pulsed Flow Method Using MOCVD
p.108

Raman study of Epitaxial lateral Overgrowth of GaN on Patterned Sapphire Substrate
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Mn, Cu Doping and Optical Properties of Highly Crystalline Ultralong ZnS Nanowires
p.114

In Situ Visualization of Layer Transitions during Convective Self-Assembly in a Sessile Drop
p.117

Optical and Surface Morphological Study of GaN Nanocolumn Grown on Gallium Coated Si by Molecular Beam Epitaxy
p.120

Nanometer-Scale In_0.5Ga_0.5As Ring-Like Structure Grown by Droplet Epitaxy
p.123

The Gas Sensitvity Character of WO₃ Nanosized Material
p.126

Effect of Oxygen Flow Rate and Temperature on the Structure of DC Sputtered Nanocrystalline Copper Oxide Films
p.129

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In Situ Visualization of Layer Transitions during Convective Self-Assembly in a Sessile Drop

Abstract:

Convective self-assembly of colloidal spheres provides a simple method for fabricating two and three dimensional colloidal crystals. In this work, we investigated the layer transitions phenomena during colloidal self-assembly in a sessile drop by using an in-situ videoscopic set-up. The effects of surface charge, colloidal concentration, and surfactant additions were examined. The results show that the chemical environment plays an important role in colloidal self-assembly. In the case of ordered growth, different layer transition phenomena were observed when the colloidal concentration is different.