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I previously worked on Virtual Reality and other hardware at Valve.  I currently work at Google[x].

Prior to starting at Valve, I built computer peripherals such as keyboards, mice, and joysticks that were designed to be used inside MRI machines.  My company, Mag Design and Engineering, sold these devices directly to researchers at academic institutions who used them to publish scientific papers in peer-reviewed journals.

After work, I spend time on many different types of projects that usually involve circuit design, machining, material selection, and general fabrication/hacking.  My favorite place to be is my home workshop.

ben dot krasnow at gmail

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Sunday, December 15, 2013

Intro to plasma cleaning

I describe how to use plasma to create very clean surfaces on microscope slides. This process is used extensively in the semiconductor industry.


5 comments:

  1. Great video - as always. Could make a video on gluing and adhesives ? for example You could try gluing PTFE by epoxy after activation in plasma chamber ? i want to know if it works, but i do not have plasma chamber now.

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  2. Boy this brings back memories!! My father worked for the Surface Activation Corporation in Syosset, NY during the 70's. I clearly remember visiting and seeing giant cross-shaped bell jars glowing with all sorts of cool colors inside. They tested many gases and I recall once they tried Hydrogen and Oxygen together to see what would happen, but were kind of unsure of the result once they hit it with RF, so they hid in the next room with a long extension cord in case of any non-passive event!
    Apparently nothing exothermic occurred, just wild colors swirling inside. Great memories of way back then!
    My dad was friends with John Fales and Boris Levy, both of whom I believe were instrumental in creating this process. It was a great time for me to discover the world of science and see first hand the amazing stuff going on there.
    I remember John Fales' basement at home, loaded with all sorts of mad-scientist equipment! So much fun to se all his tinkering. He gave me one of those solar spinners, something I've cherished for a long time and has always why I love and appreciate science.
    Thanks for this Ben!

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  3. Andris, that's a great story. Thanks for posting!

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  4. Ben, thx for posting...I used almost the same method..but with out the rf...just using high voltage..on microscope sides before coating them with Al...it pasted the "tape text"!
    Have you seen any videos posted by Ron Soyland aka "Glasslinger" on You Tube? Like "vacuum evaporating a metal onto glass"?
    http://www.youtube.com/watch?v=L41ej3vHQT8

    Ron does a lot of great stuff with glass blowing...but I think he might have fewer outgassing problems if he wore gloves even when working on the insides of turbo pumps. I'm sure that he would be happy to hear from you about how he could make improvements on his vacuum systems.



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  5. Carl, yes Ron's videos are pretty interesting. He has a lot of vacuum tube experience, and makes some really cool stuff. I've exchanged messages a couple times with him.

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