Assembly and 2D manipulation of colloidal crystal by temperature gradient

J. Ramírez Ramírez; J. Vazquez Lozano; U. Ruiz Corona; R. Ramos-García

doi:10.1117/12.2321221

7 September 2018 Assembly and 2D manipulation of colloidal crystal by temperature gradient

J. Ramírez Ramírez, J. Vazquez Lozano, U. Ruiz Corona, R. Ramos-García

Proceedings Volume 10723, Optical Trapping and Optical Micromanipulation XV; 107232O (2018) https://doi.org/10.1117/12.2321221
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Here we report the creation and manipulation of colloidal crystals by inducing temperature gradients in a colloidal suspension of silica microparticles. A colloidal crystal is an ordered array of colloid particles analogous to their atomic or molecular counterparts with proper scaling considerations. The generation and properties of colloidal crystals have been of great interest for diverse science applications such as photonic crystals, chemical sensors among others. We report a technique that utilizes particles of silica of different diameters to form colloidal crystals by temperature gradients produced by light absorption at a metallic thin film deposited on one of the substrates. Moreover, we study the behavior of the particles by having different number of hot zones.

Citation Download Citation

J. Ramírez Ramírez, J. Vazquez Lozano, U. Ruiz Corona, and R. Ramos-García "Assembly and 2D manipulation of colloidal crystal by temperature gradient", Proc. SPIE 10723, Optical Trapping and Optical Micromanipulation XV, 107232O (7 September 2018); https://doi.org/10.1117/12.2321221

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