1. Controllable assembly of silver nanoparticles induced by femtosecond laser direct writing.
- Author
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Wang, Huan, Liu, Sen, Zhang, Yong-Lai, Wang, Jian-Nan, Wang, Lei, Xia, Hong, Chen, Qi-Dai, Ding, Hong, and Sun, Hong-Bo
- Subjects
SILVER nanoparticles ,FEMTOSECOND lasers ,MICROELECTRODES ,MICROFLUIDIC devices ,LASER beams - Abstract
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 ∼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. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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