Rapid fabrication of nickel molds for prototyping embossed plastic microfluidic devices.

Rapid fabrication of nickel molds for prototyping embossed plastic microfluidic devices.
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DOI:
10.1039/c3lc41362d
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发表时间:
2013-04-21
期刊:
影响因子:
6.1
通讯作者:
Mathies RA
Mathies RA
中科院分区:
工程技术1区
文献类型:
--
作者:
Novak R;Ranu N;Mathies RA

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The production of hot embossed plastic microfluidic devices is demonstrated in 1–2 h by exploiting vinyl adhesive stickers as masks for electroplating nickel molds. The sticker masks are cut directly from a CAD design using a cutting plotter and transferred to steel wafers for nickel electroplating. The resulting nickel molds are used to hot emboss a variety of plastic substrates, including cyclo-olefin copolymer and THV fluorinated thermoplastic elastomer. Completed devices are formed by bonding a blank sheet to the embossed layer using a solvent-assisted lamination method. For example, a microfluidic valve array or automaton and a droplet generator were fabricated with less than 100 µm x-y plane feature resolution, to within 9% of the target height, and with 90±11% height uniformity over 5 cm. This approach for mold fabrication, embossing, and bonding reduces fabrication time and cost for research applications by avoiding photoresists, lithography masks, and the cleanroom.
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