Patterning surfaces with colloidal particles using optical tweezers
作者： J. P. Hoogenboom , D. L. J. Vossen , C. Faivre-Moskalenko , M. Dogterom , A. van Blaaderen
DOI: 10.1063/1.1488690
关键词: Polyelectrolyte 、 Surface charge 、 Crystal growth 、 Materials science 、 Coating 、 Nanotechnology 、 Optical tweezers 、 Surface modification 、 Substrate (printing) 、 Colloid
摘要: A method for positioning colloidal particles on surfaces in any designed pattern is described. Optical tweezers are used to bring from a reservoir the substrate where opposite surface charges immobilize surface. Both chemical modification and polyelectrolyte coating of either or colloids make generally applicable. We show that using this technique large, two-dimensional patterns can be created dried without distortions by critical point drying. As an example we 79 nm radius metallodielectric how direct three-dimensional epitaxial crystal growth. The inexpensive, relatively fast, fully automated.
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