Leipzig university researchers have coated coverslips with a thin (less than 50 nm) gold film and 5 nm chrome adhesion layer by Vac Coat\u00a0DTT<\/a><\/strong>\u00a0model to study optically induced 2D and 3D colloidal crystals through dynamic thermofluidic assembly. The results of this research has been published as a journal article in Frontier in Nanotechnology, with the title \u201cThermofluidic assembly of colloidal crystals\u201d by D. Quinn and F. Cichos in March, 2023.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Crystalline structures as crystalline colloids demonstrate remarkable photonic features, useful in modulation of electromagnetic wave propagation. These structures can be formed in various methods, such as engineering inter-particle interactions, applying external electro-magnetic fields, using optical tweezers, or thermally induced processes, in which local heating of a plasmonic structure like a thin gold film is used to induce a temperature gradient to create\/destroy crystalline colloids.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Vac Coat\u00a0Desktop Thermal Evaporator<\/strong>, DTT, is a high-vacuum\u00a0coating machine<\/strong>\u00a0suitable for uniform deposition of different source materials like gold, silver, chrome, etc., by\u00a0thermal evaporation method<\/strong>. DTT contains three resistive boat\/basket source holders, and can be used for simultaneous material deposition if supplied with multiple high-current power supplies (optional).<\/p>\n
$\"Schematic$ <\/a><\/p>\n
Schematic of the temperature measurement using the 5CB technique.<\/p>\n
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