Fabrication of three-dimensional SiC-based ceramic micropatterns using a sequential micromolding-and-pyrolysis process

A sequential micromolding and pyrolysis process is presented for fabricating three-dimensional (313) SiGbased ceramic micropatterns with a submicron scale resolution using preceramic resins, which is a promising technique for diverse applications such as tribological micro-stamps of hot embossing. Firstly, a diffuser lithography process (DLP) and a two-photon polymerization (TPP) process have been employed to create master patterns, which are utilized in the fabrication of molds. In the DLP, various hemispheric-concave master shapes were built readily by exposing UV-light onto a thick positive photoresist film through a diffuser, which randomizes the paths of incident UV-light. Alternatively, the TPP process based on two-photon polymerization was used for the creation of real 3D master patterns with a two-photon sensitive resin mixture. Subsequently, the preceramic polymer micropatterns were fabricated via a micromolding process using polydimethylsiloxane (PDMS) molds replicated from the masters. Finally, the UV-cured preceramic micropatterns were transformed into SiGbased ceramic microstructures when pyrolyzed at 800 degrees C under inert atmosphere. (c) 2006 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2006-11
Language
ENG
Keywords

LITHOGRAPHY; MICROSTRUCTURES; COMPOSITES

Citation

MICROELECTRONIC ENGINEERING, v.83, no.11-12, pp.2475 - 2481

ISSN
0167-9317
DOI
10.1016/j.mee.2006.05.010
URI
http://hdl.handle.net/10203/2762
Appears in Collection
EE-Journal Papers(저널논문)
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