Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.762885
Title: Fabrication of integrated channel waveguides in polydimethylsiloxane (PDMS) using proton beam writing (PBW): Applications for fluorescence detection in microfluidic channels
Authors: Udalagama, C.N.B. 
Chan, S.F.
Homhuan, S.
Bettiol, A.A. 
Wohland, T. 
Watt, F. 
Keywords: Biophotonic chip
Buried waveguides
Fluorescence detection
PDMS
Polydimethylsiloxane
Proton beam writing
Issue Date: 2008
Citation: Udalagama, C.N.B., Chan, S.F., Homhuan, S., Bettiol, A.A., Wohland, T., Watt, F. (2008). Fabrication of integrated channel waveguides in polydimethylsiloxane (PDMS) using proton beam writing (PBW): Applications for fluorescence detection in microfluidic channels. Proceedings of SPIE - The International Society for Optical Engineering 6882 : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.762885
Abstract: Proton beam writing (PBW) is a lithographic technique that utilizes MeV protons in a direct write mode to fabricate micro/nano features in suitable resist material (E.g PMMA, SU-8, silicon, Foturan). These micro/nano structures may be used in an electroplating step to yield robust metallic stamps/molds for the replication of the original and lends itself to the fabrication of micro/nano fluidic channels that are important components in devices such as biophotonic chips. Another feature of proton bombardment is its ability to induce an increase in refractive index along the ions path, in particular at the end of its range where there is substantial nuclear scattering. This allows PBW to directly write buried waveguides that can be accurately aligned with fluidic channels. Polydimethylsiloxane (PDMS) is an optically clear, biocompatible polymer that can be readily used with a mold (such as that created with PBW) and easily sealed so as to produce biophotonic chips containing micro/nano fluidic channels. This has lead us to favour PDMS as the base material for our work on the development of these biophotonic chips. The present work is concerned with the production of integrating channel waveguides in PDMS chips, so as to have a working device that may be used to detect fluorescently tagged biological samples. For this we have adopted two approaches, namely(1) directly embedding optical fibres in the polymer and (2) using PBW to directly write buried waveguides in the polymer.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/77442
ISBN: 9780819470577
ISSN: 0277786X
DOI: 10.1117/12.762885
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

9
checked on Oct 17, 2018

WEB OF SCIENCETM
Citations

2
checked on Oct 9, 2018

Page view(s)

78
checked on Oct 13, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.