Ben Krasnow

Wednesday, February 20, 2019

Electro-osmosis: pumping water with electricity and no magnets




An electro-osmotic pump is an unusual and interesting way to pump fluids and also measure their flow rate with only an electric field (no magnets).

Refs (in order of relevance)
https://sci-hub.tw/10.1016/S0039-9140(99)00320-3
http://micromachine.stanford.edu/~dlaser/research_pages/electrokinetics_and_eof.html
https://www3.nd.edu/~changlab/documents/Youcef.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2756694/
https://psec.uchicago.edu/library/photocathodes/SiO2_OH_model.pdf


https://www.patreon.com/AppliedScience
Ben Krasnow at 12:10 AM 5 comments:

Saturday, February 9, 2019

Testing UV absorption eyewear and sunscreen with a deuterium light source



I use a deuterium light source to determine the absorption effectiveness of UV safety glasses and sunscreen, as well as common transparent materials.

Another interesting application of sunscreen, UV, and visual indicators:
https://www.youtube.com/watch?v=h8VJft5Xq5g

References for CIE erythema action spectrum:
http://sci-hub.tw/10.1039/C1PP05271C

https://pubs.rsc.org/en/content/articlelanding/2012/pp/c1pp05271c/unauth#!divAbstract

https://en.wikipedia.org/wiki/Deuterium_arc_lamp
https://en.wikipedia.org/wiki/Emission_spectrum#Radiation_from_molecules

http://www.aseq-instruments.com/

https://www.ebay.com/itm/Fused-quartz-glass-plate-50mm-x-50mm-x-1mm-2-pieces-Free-Shipping/123634196683

https://www.amazon.com/gp/product/B001RKFZPC/

https://www.patreon.com/AppliedScience
Ben Krasnow at 11:12 PM No comments:
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