Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/226992

Title

High-precision interferometric monitoring of polymer swelling in an one-dollar optofluidic sensor

Author(s)

Gervinskas, Gediminas;  Day, Daniel;  Juodkazis, Saulius

Abstract

Swelling of poly-methylmethacrylate (PMMA) in weak solvents: water, ethanol and methanol was investigated by interferometry using a simple microfluidic sensor. A change of channel width by ±20 nm, comparable with the surface roughness of the polymer surface, is reliably detected and its temporal evolution was monitored in situ. Dynamics of polymer swelling over time periods from a few seconds to a few days were obtained. An optimized in-expensive microfluidic sensor design using hot embossing with gold sputtering is presented. Such a sensor can be used for high-fidelity adsorption-desorption interferometric sensing and its cost can be optimized for a single use.

Publication type

Conference paper

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics (Pacific Rim IQEC/CLEO 2011) incorporating the Australasian Conference on Optics, Lasers and Spectroscopy (ACOLS) and the Australian Conference on Optical Fibre Technology (ACOFT), Sydney, New South Wales, Australia, 28 August - 01 September 2011, pp. 538-540

Publication year

2011

Keyword(s)

Interferometry;  Optofluidic sensors;  PMMA;  Polymer swelling;  Poly-methylmethacrylate

Publisher

Australian Optical Society, Australian Institute of Physics and Engineers Australia

ISBN

9780977565771, 0977565777

Publisher URL

http://dx.doi.org/10.1109/IQEC-CLEO.2011.6193850

Copyright

Copyright © 2011 AOS.

Peer reviewed