Posted: 1/26/2015 3:13:13 PM EDT
I want one.... 
http://asia.nikkei.com/magazine/20150115-Living-with-terror/Tech-Science/The-next-LED-revolution-is-upon-us-and-it-is-ultraviolet |
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These may be useful for high energy source of UVC in a small low power package to sterilize water.
Right now I have UVC mercury lamps in stainless housings [were/are available on ebay for abt $50 -super deal] that are very effective as a final stage in the killing of bugs in water -and are rather portable. We'd use them in the event of a biological contamination of water, and insert in series following the RO membrane. |
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UV LEDS are already available. I believe the one I keep in my keychain is 365nm, still enough to sterilize in a few minutes. You also have UV LED water sterylizers that arent that expensive. FerFAL 365 nm is UVA, not the 'sterilization wavelength' of UVC, 290 nm - 100 nm. Yours have been around a long time. How do you sterilize with it? |
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Quoted:
you could maybe read the article. 
Quoted:
Quoted:
UV LEDS are already available. I believe the one I keep in my keychain is 365nm, still enough to sterilize in a few minutes. You also have UV LED water sterylizers that arent that expensive. FerFAL you could maybe read the article.
I did. There's already UV LEDS that are being used for those same applications and the article isnt explaning what it means by "deep" UV LED. Maybe lower than 365nm? I'm all for LED progress and very much interested in it, just wish the article explained what it means by deep UV better. There's actually some amazing findings on the healing properties of blue LED light, with healing times of wounds almost twice as fast with simple 10 mionute exposure of commercial blue LED light per day. Some blue frequencies are close enough to UV to have some of its properties, without having some of its worse disadvantages. For optimal disenfection though, you need under 365nm (between 350 and 365 if im remembering correctly) , which is proabably what the deep UV light does. FerFAL Edit to add: Here's some of the different UV, and their applications; ultraviolet A (UVA) ultraviolet radiation with wavelengths between 320 and 400 nm, comprising over 99 per cent of that reaching the surface of the earth. It enhances the harmful effects of UVB, is responsible for some photosensitivity reactions, and is used therapeutically in the treatment of various skin disorders. ultraviolet B (UVB) ultraviolet radiation with wavelengths between 290 and 320 nm, comprising 1 per cent of that reaching the surface of the earth. It causes sunburn and a number of damaging photochemical changes within cells, including damage to DNA leading to premature aging of the skin, premalignant and malignant changes, and various photosensitivity reactions; it is also used therapeutically in the treatment of skin disorders. ultraviolet C (UVC) ultraviolet radiation with wavelengths between 200 and 290 nm, all of which is filtered out by the ozone layer and does not reach the surface of the earth; it is germicidal and is also used in ultraviolet phototherapy. |
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Quoted:
I did. There's already UV LEDS that are being used for those same applications and the article isnt explaning what it means by "deep" UV LED. Maybe lower than 365nm? I'm all for LED progress and very much interested in it, just wish the article explained what it means by deep UV better. There's actually some amazing findings on the healing properties of blue LED light, with healing times of wounds almost twice as fast with simple 10 mionute exposure of commercial blue LED light per day. Some blue frequencies are close enough to UV to have some of its properties, without having some of its worse disadvantages. For optimal disenfection though, you need under 365nm (between 350 and 365 if im remembering correctly) , which is proabably what the deep UV light does. FerFAL Edit to add: Here's some of the different UV, and their applications; ultraviolet A (UVA) ultraviolet radiation with wavelengths between 320 and 400 nm, comprising over 99 per cent of that reaching the surface of the earth. It enhances the harmful effects of UVB, is responsible for some photosensitivity reactions, and is used therapeutically in the treatment of various skin disorders. ultraviolet B (UVB) ultraviolet radiation with wavelengths between 290 and 320 nm, comprising 1 per cent of that reaching the surface of the earth. It causes sunburn and a number of damaging photochemical changes within cells, including damage to DNA leading to premature aging of the skin, premalignant and malignant changes, and various photosensitivity reactions; it is also used therapeutically in the treatment of skin disorders. ultraviolet C (UVC) ultraviolet radiation with wavelengths between 200 and 290 nm, all of which is filtered out by the ozone layer and does not reach the surface of the earth; it is germicidal and is also used in ultraviolet phototherapy. Quoted:
Quoted:
Quoted:
UV LEDS are already available. I believe the one I keep in my keychain is 365nm, still enough to sterilize in a few minutes. You also have UV LED water sterylizers that arent that expensive. FerFAL you could maybe read the article.
I did. There's already UV LEDS that are being used for those same applications and the article isnt explaning what it means by "deep" UV LED. Maybe lower than 365nm? I'm all for LED progress and very much interested in it, just wish the article explained what it means by deep UV better. There's actually some amazing findings on the healing properties of blue LED light, with healing times of wounds almost twice as fast with simple 10 mionute exposure of commercial blue LED light per day. Some blue frequencies are close enough to UV to have some of its properties, without having some of its worse disadvantages. For optimal disenfection though, you need under 365nm (between 350 and 365 if im remembering correctly) , which is proabably what the deep UV light does. FerFAL Edit to add: Here's some of the different UV, and their applications; ultraviolet A (UVA) ultraviolet radiation with wavelengths between 320 and 400 nm, comprising over 99 per cent of that reaching the surface of the earth. It enhances the harmful effects of UVB, is responsible for some photosensitivity reactions, and is used therapeutically in the treatment of various skin disorders. ultraviolet B (UVB) ultraviolet radiation with wavelengths between 290 and 320 nm, comprising 1 per cent of that reaching the surface of the earth. It causes sunburn and a number of damaging photochemical changes within cells, including damage to DNA leading to premature aging of the skin, premalignant and malignant changes, and various photosensitivity reactions; it is also used therapeutically in the treatment of skin disorders. ultraviolet C (UVC) ultraviolet radiation with wavelengths between 200 and 290 nm, all of which is filtered out by the ozone layer and does not reach the surface of the earth; it is germicidal and is also used in ultraviolet phototherapy. Huh??? What does this have to do with Phlather's topic??? 
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