Abstract
We propose and demonstrate a low-cost optical micromanipulation system that makes use of simple microfrabricated components coupled to a smartphone camera for imaging. Layering hanging droplets of polydimethylsiloxane (PDMS) on microscope coverslips, and curing with a 100 W bulb, creates lenses capable of optical trapping. Optically trapped 3.93 μm silica beads were imaged with a second hanging droplet lens, doped with 1400 μg mL-1 Sudan II dye. Through doping, a lens with an integrated long-pass filter that effectively blocks the 532 nm trapping light was produced. Illumination was provided by shining a lamp into polystyrene foam packaging, perpendicular to the imaging path, producing a diffuse light source. We report trapping Q values of ~ 8.9 × 10-3. The techniques here are an addition to the growing body of work on low cost and adaptable microfluidics.
Original language | English |
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Pages (from-to) | 55561-55565 |
Number of pages | 5 |
Journal | RSC Advances |
Volume | 5 |
Issue number | 68 |
Early online date | 17 Jun 2015 |
DOIs | |
Publication status | Published - 2015 |