Fabrication of a bunch of sub-30-nm nanofibers inside microchannels using photopolymerization via a long exposure technique
Fabrication of a bunch of sub-30-nm nanofibers inside microchannels using photopolymerization via a long exposure technique
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DOI：
10.1063/1.2363956
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发表时间：
2006-10-23
影响因子：
4
通讯作者：
Lee, Kwang-Sup
中科院分区：
文献类型：
--
作者：
Park, Sang Hu;Lim, Tae Woo;Lee, Kwang-Sup
对利用双光子引发光聚合技术制备亚30 nm纳米光纤进行了实验研究。为了在微结构的内部区域形成纳米纤维，提出了一种采用长激光曝光技术(LET)的光聚合方法。使用LET生产了大量具有显著高分辨率(约22 nm)的TPP纳米纤维。此外，还证明了在密集聚合体素的边界周围存在的弱聚合区域中规则地创建了薄的互连网络，从而允许创建各种压花图案。通过控制相邻体素或线之间的距离，可以在局部区域选择性地产生纳米纤维，这导致了高功能滤光片和混合器的制造。利用LET制作了包含纳米纤维在内的压花图案和微通道，以验证该方法的实际可行性。这些亚30 nm纳米纤维可能会在不同的研究领域找到有意义的应用，如生物过滤器、混合器和光子发射器。(C)2006年美国物理研究所。
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.