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Eye Treatment Stretches Mouse Sight Beyond Visible Spectrum

by Scientific American
December 12th 2020
Nanoparticles that attach to photoreceptors allowed mice to see infrared and near-infrared light for up to two months.
imagine if you could shop the shelves of all your local liquor stores at the same time. Well, spoiler alert you can with drizzly. The number one alcohol delivery app Drizzly lets you compare prices from local liquor stores on a huge selection of beer, wine and spirits. Then get them delivered right to your door in under 60 minutes. And right now, Drizzly is giving all new customers $5 off their first order. Just enter promo code, save five, but check out, download the drizzly app or go to drizzly dot com. That's d R i z l y dot com. This is scientific Americans. 62nd Science. I'm Karen Hopkin, tired of having to reach for your night vision goggles when you want to track someone's heat signature after dark? Well, biotech may someday come to the rescue for all of you aspiring spies, because researchers have developed an injectable nano scale antenna, which they've used to allow mice to see beyond their normal visual spectrum and into the infrared

. The work appears in the journal cell. Like all mammals, we humans air only able to see light in the visible spectrum, which includes all of the colors of the rainbow. That limitation is due to the photo receptors in our eyes being only able to detect radiation with a wavelength of around 400 to 700 nanometers, which means we can't see infra red and near infrared light, which has wavelengths a little bit longer. And that got scientists thinking. So we always curious whether we can use any method or technique toe. Allow us to be able to see me in Fred on infrared light kenshoo of the University of Science and Technology of China, he reached out to his colleague gang Hong at the University of Massachusetts Medical School, who engineered a teeny tiny device, which he calls an up conversion nanoparticle. We actually develop nanoparticles so called up conversion nanoparticles that actually can effectively

be active by this near infrared light. Then they started testing their system in mice. The nanoparticles attached themselves to photo receptors in the animals retina. There they absorb infrared radiation and converted to visible green light. The screen light is observed by written cells, which the brain then interprets, says regular visible light. This enhanced supervision allows the animals to not only see an infrared, but to discriminate between different infrared patterns. So, for example, they could be taught to navigate toward horizontal stripes versus vertical ones, patterns that the researchers themselves couldn't see. Even she found that a bit disconcerting. When we do the experiment that sometimes it feels a little bit creepy ease because, you know, if you do not wear in nine million goggles, and when we do the testing, we show the pattern to the animal. In fact, to our own eyes, we cannot tell any

near infrared patterns, but inject animal could they can use this patent? Oh God, their behaviors very accurately and efficiently. Hong says that the advanced infrared detection did not appear to interfere with or supercede the animals. Standard issue visual abilities. Trader minds were able to perceive his light patterns even in the daylight conditions, clearly suggesting that not a part of working in parallel with conventional waste probation as well. The technology, in addition to its applications in military or law enforcement, might even provide a possible fix for color blindness and, best of all sure notes, it wouldn't need batteries this new. Another particles technique is a stealthy, and it do not need the external power is another particle directly be activated by the infrared light itself. The nano particles remained active for his long as two months

. A similar infrared boost could someday allow US humans to break through our natural visual limitations and see things in a whole new light. Thanks for listening for a scientific Americans. 62nd Science. I'm Karen Hopkin. Yeah.

Eye Treatment Stretches Mouse Sight Beyond Visible Spectrum
Eye Treatment Stretches Mouse Sight Beyond Visible Spectrum
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