Recent content by runcyclexcski

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    UV LED's for sterilization???

    I just posted on 300 nm 30 mW LEDs, coindicentally. They are not cheap. I use them to cross-link and destroy DNA nanostructures. It takes 1 hr of irradiation to chop 90% of DNA into non-detectable pieces. But, I imagine, to sterlize you would not need that degree of DNA 'digestion'. You would...
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    power measurement for a 300 nm UV LED

    I have a 300 nm UV LED rated at 30 mW power output. Is there a decent sensor (to within 25% error) that I could use to measure the power of the light I managed to collect, without having to spend thousands on a high-end sensor? Some details are below: LED...
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    simple heat sink, CW driver for a 2W 9 mm Optronics diode

    Hi all, I've got a 2W (2000 mW) 730 (infrared) diode from Optronics. I thought it would come with a basic heat sink and protective circuit, but no, this is just the chip itself. It's in a sealed pack, no lens, no fiber coupler. The diode was $700. When packaged and sold with a turn-key package...
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    UK supplier of authentic unprotected NCR18650Bs?

    Hi all, Could someone recommend a UK distributor of authentic Panasonic NCR18650Bs at 3400 mAh, unprotected? Is the latter capacity the highest state of the art by Panasonic/Sanyo? I know orbtronic, but they are US-based. This is for a powerbanl self-build: every pre-built one (with no-brand...
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    365 LED to cure NOA epoxy

    Re: 365 LED to cure NOA epoxy: WORKS! An update: I wired together the 365 Ledengin I got from Mouser (897-LZ110UV000000). Soldering was a pain, will try to get a chip with proper leads next time. Collected the output using an f=100 mm, 25.4 dia achromat into infinity, refocused with an 200 mm...
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    365 LED to cure NOA epoxy

    Hey, thanks a lot! I ended up ordering two of these (below), looks like the LED alone costs as much as an entire flashlight, but at least it's comparable. I have optical mounts/lens tubes at the lab so I will rig it to focus the beam, and will attach it to a regulated power supply at 3.2+ V...
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    365 LED to cure NOA epoxy

    Hi all, The last post on a similar topic was ~5 years ago, so I was hoping the field has progressed since then. I am looking for a cheap UV source to cure NOA epoxy (NOA81 to be exact) in 10 sec or so. They say it peaks at 365 nm, curing power >2 mW/cm2. A 'professional' curing system (which...
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