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- W2005519568 abstract "Irradiation of a thin film with a beam-shaped laser is proposed to achieve site-selectively controlled dewetting of the film into nanoscale structures. As a proof of concept, the laser-directed dewetting of an amorphous silicon thin film on a glass substrate is demonstrated using a donut-shaped laser beam. Upon irradiation of a single laser pulse, the silicon film melts and dewets on the substrate surface. The irradiation with the donut beam induces an unconventional lateral temperature profile in the film, leading to thermocapillary-induced transport of the molten silicon to the center of the beam spot. Upon solidification, the ultrathin amorphous silicon film is transformed to a crystalline silicon nanodome of increased height. This morphological change enables further dimensional reduction of the nanodome as well as removal of the surrounding film material by isotropic silicon etching. These results suggest that laser-based dewetting of thin films can be an effective way for scalable manufacturing of patterned nanostructures." @default.
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- W2005519568 date "2015-04-01" @default.
- W2005519568 modified "2023-10-09" @default.
- W2005519568 title "Directed dewetting of amorphous silicon film by a donut-shaped laser pulse" @default.
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- W2005519568 doi "https://doi.org/10.1088/0957-4484/26/16/165303" @default.
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