Fabrication of a bunch of sub-30-nm nanofibers inside microchannels using photopolymerization via a long exposure technique

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Experimental studies on the fabrication of sub-30-nm nanofibers using two-photon initiated photopolymerization (TPP) have been carried out. To generate nanofibers at the interior region of microstructures, a photopolymerization method involving a long laser-exposure technique (LET) is proposed. A multitude of nanofibers with a notably high resolution (about 22 nm) in TPP were produced using the LET. Furthermore, it is also demonstrated that thin interconnecting networks were created regularly in a weakly polymerized region existing around the boundary of a densely polymerized voxel, allowing for the creation of various embossing patterns. By controlling the distance between adjacent voxels or lines, a selective generation of nanofibers in a local area is possible, which leads to the fabrication of high-functional filters and mixers. Embossing patterns and microchannels including nanofibers inside were fabricated by the LET so as to demonstrate the practical feasibility of this approach. These sub-30-nm nanofibers may find meaningful applications such as biofilters, mixers, and photon emitters in diverse research fields. (c) 2006 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2006-10
Language
English
Article Type
Article
Keywords

2-PHOTON POLYMERIZATION; MICROFABRICATION; NANOFABRICATION; RESOLUTION

Citation

APPLIED PHYSICS LETTERS, v.89, no.17

ISSN
0003-6951
DOI
10.1063/1.2363956
URI
http://hdl.handle.net/10203/2344
Appears in Collection
ME-Journal Papers(저널논문)
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