Journal
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume 16, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1468-6996/16/2/024805
Keywords
silver nanoparticles; femtosecond laser direct writing; patterning
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Funding
- National Basic Research Program of China [2011CB013000]
- NSFC [61376123, 61008014, 90923037, 6078048, 11104109]
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We report controllable assembly of silver nanoparticles (Ag NPs) for patterning of silver microstructures. The assembly is induced by femtosecond laser direct writing (FsLDW). A tightly focused femtosecond laser beam is capable of trapping and driving Ag NPs to form desired micropatterns with a high resolution of similar to 190 nm. Taking advantage of the 'direct writing' feature, three microelectrodes have been integrated with a microfluidic chip; two silver-based microdevices including a microheater and a catalytic reactor have been fabricated inside a microfluidic channel for chip functionalization. The FsLDW-induced programmable assembly of Ag NPs may open up a new way to the designable patterning of silver microstructures toward flexible fabrication and integration of functional devices.
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