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题名: Fabrication of high-aspect-ratio 3D hydrogel microstructures using optically induced electrokinetics
作者: Li, Yi; Lai, Sam H.S.; Liu N(刘娜); Zhang, Guanglie; Liu LQ(刘连庆); Lee, Gwo-Bin; Li WR(李文荣)
作者部门: 机器人学研究室
关键词: optically induced electrokinetics ; polymer microfabrication ; hydrogel microstructures ; 3D polymer structures
刊名: Micromachines
ISSN号: 2072-666X
出版日期: 2016
卷号: 7, 期号:4, 页码:1-10
收录类别: SCI ; EI
产权排序: 2
项目资助者: Hong Kong Research Grants Council (Project no: CityU 116912), the Chinese Academy of Sciences–Croucher Funding Scheme for Joint Laboratories (Project no: 9500011), and The Science Technology and Innovation Committee of Shenzhen Municipality grants (JCYJ20140813161522550 and JCYJ20150828104330541).
摘要: We present a rapid hydrogel polymerization and prototyping microfabrication technique using an optically induced electrokinetics (OEK) chip, which is based on a non-UV hydrogel curing principle. Using this technique, micro-scale high-aspect-ratio three-dimensional polymer features with different geometric sizes can be fabricated within 1-10 min by projecting pre-defined visible light image patterns onto the OEK chip. This method eliminates the need for traditional photolithography masks used for patterning and fabricating polymer microstructures and simplifies the fabrication processes. This technique uses cross-link hydrogels, such as poly(ethylene glycol) (PEG)-diacrylate (PEGDA), as fabrication materials. We demonstrated that hydrogel micropillar arrays rapidly fabricated using this technique can be used as molds to create micron-scale cavities in PDMS (polydimethylsiloxane) substrates. Furthermore, hollow, circular tubes with controllable wall thicknesses and high-aspect ratios can also be fabricated. These results show the potential of this technique to become a rapid prototyping technology for producing microfluidic devices. In addition, we show that rapid prototyping of three-dimensional suspended polymer structures is possible without any sacrificial etching process.
语种: 英语
WOS记录号: WOS:000375209100014
WOS标题词: Science & Technology ; Technology
类目[WOS]: Nanoscience & Nanotechnology ; Instruments & Instrumentation
关键词[WOS]: MANIPULATION ; PARTICLES ; TISSUE
研究领域[WOS]: Science & Technology - Other Topics ; Instruments & Instrumentation
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/18640
Appears in Collections:机器人学研究室_期刊论文

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Recommended Citation:
Li, Yi,Lai, Sam H.S.,Liu N,et al. Fabrication of high-aspect-ratio 3D hydrogel microstructures using optically induced electrokinetics[J]. Micromachines,2016,7(4):1-10.
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