Journal
BIOMICROFLUIDICS
Volume 5, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3637630
Keywords
bioMEMS; biosensors; microfabrication; microfiltration; microorganisms; microsensors; molecular sieves; multilayers; polymers; porosity; ultraviolet lithography
Categories
Funding
- Environment & Water Industry Programme Office of Singapore [MEWRC651/06/170]
Ask authors/readers for more resources
Fast detection of waterborne pathogens is important for securing the hygiene of drinking water. Detection of pathogens in water at low concentrations and minute quantities demands rapid and efficient enrichment methods in order to improve the signal-to-noise ratio of bio-sensors. We propose and demonstrate a low cost and rapid method to fabricate a multi-layer polymeric micro-sieve using conventional lithography techniques. The micro-fabricated micro-sieves are made of several layers of SU-8 photoresist using multiple coating and exposure steps and a single developing process. The obtained micro-sieves have good mechanical properties, smooth surfaces, high porosity (approximate to 40%), and narrow pore size distribution (coefficient of variation < 3.33%). Sample loading and back-flushing using the multi-layer micro-sieve resulted in more than 90% recovery of pathogens, which showed improved performance than current commercial filters. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3637630]
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available