Ben Krasnow
Sunday, November 15, 2020
Etching silicon wafers to make colorful Rugate optical filters (porous silicon)
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Passing an electrical current through a silicon wafer in a special acid etchant will create a porous layer with a variable index of refracti...
5 comments:
Sunday, September 20, 2020
Shooting an electron beam through air
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A special 100nm thick window allows 25 KeV electrons to pass from a vacuum tube to the atmosphere where they hit a fluorescent screen -- a...
4 comments:
Tuesday, September 8, 2020
Ultrasonic soldering bonds glass, titanium, stainless steel, ceramics, tungsten, nichrome...
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Technical details and how to build an ultrasonic soldering iron. This technique can bond difficult-to-solder metals such as titanium as well...
6 comments:
Sunday, August 30, 2020
Demo and teardown of an X-ray fluorescence gun (measures chemical composition)
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I show how an X-ray fluorescence gun works, do a teardown and failure analysis, and discuss a new kind of XRF tech now "available"...
5 comments:
Sunday, July 19, 2020
Holograms on chocolate
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DIY process to copy commercial holograms onto chocolate! Completely edible -- no dyes or inks used. Tech Ingredients' video: htt...
4 comments:
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