Journal
OPTICS EXPRESS
Volume 19, Issue 23, Pages 22786-22796Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.022786
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Funding
- Iketani Science and Technology Foundation
- MEXT, Japan [21686010, 19810012]
- National Natural Science Foundation of China [50973126, 61077028]
- 973 Project [2010CB934103]
- ICP of MOST [2008DFA02050, S2010GR0980]
- Grants-in-Aid for Scientific Research [19810012, 21686010] Funding Source: KAKEN
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We demonstrate fabrication of Au nanorod aggregates microstructures by means of a femtosecond near-infrared laser. The laser light was tightly focused into colloidal Au nanorods dispersed in photopolymerizable metyl-methacrylate (MMA) compound to induce two-photon polymerization (TPP). TPP of MMA glued the nanorods together to form solid microstrucures of aggregates. The laser light excited a local surface plasmon, resulting in confinement of TPP in the vicinity of nanorods. Concurrenly occurring optical accumulation of nanorods created a unique mechanism for the formation of nanorod aggregates into desired microstructures. This technique would be a clue for a novel micro/nanofabrication method for plasmonic materials and devices. (C) 2011 Optical Society of America
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