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Proceedings Paper

Graphene material characterisation for optofluidic applications
Author(s): Michelle Del Rosso; C. Harrison Brodie; Christopher M. Collier
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Paper Abstract

Traditional photolithography methods of fabrication of micro-opto-electro-mechanical systems (MOEMS) can be substituted with graphene to minimize cost and enhance optofluidic system integration. The use of optical disc drives allows graphite oxide to undergo (near infrared) light exposure, with a specified pattern, and transformation to graphene, also with this specified pattern. This work describes the fabrication methods, electrical conduction and hydrophobicity characteristics for graphene microsystems. The fabrication characterisation involves a comparison of graphene fabrication of microsystems with photolithography fabrication. Graphene fabrication was observed to be comparable to the photolithography fabrication, with a comparable minimum feature size. The electrical characterisation involves resistivity measurements of graphene which decrease from n = 1 (where n represents the dose of light exposure in the disc drive), and saturates at n = 12, representing the final transformation to graphene from graphite oxide. The microfluidic characterisation of the graphene surface involves contact angle measurements and favourable wetting properties are shown. By increasing the fabrication dose, the contact angle rises from 50 degrees until saturation at 116 degrees, allowing for contact angle tunability over this range. Overall, fabrication of MOEMS is found to be successfully achievable using graphene fabrication.

Paper Details

Date Published: 3 March 2020
PDF: 6 pages
Proc. SPIE 11276, Optical Components and Materials XVII, 112760P (3 March 2020); doi: 10.1117/12.2538295
Show Author Affiliations
Michelle Del Rosso, Univ. of Guelph (Canada)
C. Harrison Brodie, Univ. of Guelph (Canada)
Christopher M. Collier, Univ. of Guelph (Canada)

Published in SPIE Proceedings Vol. 11276:
Optical Components and Materials XVII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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