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Team:Cambridge/Experiments/Reflectin Thin Films II
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Revision as of 20:35, 28 August 2011
Reflectin Thin Films II We refined our methods in a number of ways:
Practice
- Centrifugation of the solutions prior to spin and flow coating to sediment the impurities that caused thickness variations previously. (13000rpm for 10 minutes)
- We introduced liquid CO2 pressure wash to improve cleaning of the silicon substrates
- Trialled spin coating on a glass substrate to allow us to image the way the thin film refracts and transmits light.
- We heat cured the thin films, 10 minutes at 80 or 120 degrees.
- We recorded the reflectance spectra of some of the thin films
- We ran a control using the protein bovine serum albuimin.
Results The centrifugation appears to have reduced the disruption due to impurities in the coated solution
Safety
