Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/53925
Type: Artigo de periódico
Title: A toner-mediated lithographic technology for rapid prototyping of glass microchannels
Author: Coltro, WKT
Piccin, E
da Silva, JAF
do Lago, CL
Carrilho, E
Abstract: A simple, fast, and inexpensive masking technology without any photolithographic step to produce glass microchannels is proposed in this work. This innovative process is based on the use of toner layers as mask for wet chemical etching. The layouts were projected in graphic software and printed on wax paper using a laser printer. The toner layer was thermally transferred from the paper to cleaned glass surfaces ( microscope slides) at 130 degrees C for 2 min. After thermal transference, the glass channel was etched using 25% ( v/v) hydrofluoric acid ( HF) solution. The toner mask was then removed by cotton soaked in acetonitrile. The etching rate was approximately 7.1 +/- 0.6 mu m min(-1). This process is economically more attractive than conventional methods because it does not require any sophisticated instrumentation and it can be implemented in any chemical/biochemical laboratory. The glass channel was thermally bonded against a flat glass cover and its analytical feasibility was investigated using capacitively coupled contactless conductivity detection ( (CD)-D-4) and laser- induced fluorescence ( LIF) detection.
Country: Inglaterra
Editor: Royal Soc Chemistry
Rights: embargo
Identifier DOI: 10.1039/b702931d
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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