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An Artificial Retina aiming to restore sight for people with damaged retinas.
This medical implant is suitable for people who have damaged photoreceptors (cones and rods) but otherwise a functioning retina, as is the case for many patients suffering from retinitis pigmentosa or advanced dry AMD.
The implant will be inserted subretinally, where photoreceptors are located in a healthy retina. The artificial retina acts as a substitute for the damaged photoreceptors by converting light into a signal the brain can interpret.
This artificial retina is standalone and self-powered by ambient light, using photovoltaic effect: it does not require external power sources or glasses-mounted camera.
This medical implant is suitable for people who have damaged photoreceptors (cones and rods) but otherwise a functioning retina, as is the case for many patients suffering from retinitis pigmentosa or advanced dry AMD.
The implant will be inserted subretinally, where photoreceptors are located in a healthy retina. The artificial retina acts as a substitute for the damaged photoreceptors by converting light into a signal the brain can interpret.
This artificial retina is standalone and self-powered by ambient light, using photovoltaic effect: it does not require external power sources or glasses-mounted camera.
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New type of 3D printing uses sound waves to build up objects
3D printing typically involves depositing layers of molten plastic, laser-melting powdered metal, or using UV light to harden gelatinous resin. A new technique takes yet another approach, however, by utilizing sound waves.
In the current version of the technique, a transducer is used to send focused pulses of ultrasound through the sides of a chamber, into liquid polydimethylsiloxane (PDMS) resin contained within. Doing so produces ultrasonic fields, which cause rapidly oscillating microscopic bubbles to temporarily form at specific points in the resin.
As those bubbles oscillate, the temperature inside them rises to about 15,000 degrees Kelvin (14,727 ºF or 26,540 ºF) and the pressure within them climbs to over 1,000 bar (14,504 psi). Although this sudden increase in temperature and pressure only lasts for picoseconds (trillionths of a second), it causes the resin to solidify at the exact location of the bubble.
- @science -
3D printing typically involves depositing layers of molten plastic, laser-melting powdered metal, or using UV light to harden gelatinous resin. A new technique takes yet another approach, however, by utilizing sound waves.
In the current version of the technique, a transducer is used to send focused pulses of ultrasound through the sides of a chamber, into liquid polydimethylsiloxane (PDMS) resin contained within. Doing so produces ultrasonic fields, which cause rapidly oscillating microscopic bubbles to temporarily form at specific points in the resin.
As those bubbles oscillate, the temperature inside them rises to about 15,000 degrees Kelvin (14,727 ºF or 26,540 ºF) and the pressure within them climbs to over 1,000 bar (14,504 psi). Although this sudden increase in temperature and pressure only lasts for picoseconds (trillionths of a second), it causes the resin to solidify at the exact location of the bubble.
- @science -
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ScienceAlert - Latest
5 Planets Are About to Line Up in The Sky, And You Don't Even Need a Telescope
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5 Planets Are About to Line Up in The Sky, And You Don't Even Need a Telescope
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ScienceAlert
5 Planets Are About to Line Up in The Sky, And You Don't Even Need a Telescope
Sky watchers have something extra special to look forward to later in June, as all five of the planets that we can see with the naked eye – Mercury, Venus, Mars, Jupiter, Saturn – are going to line up in the sky.
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ScienceAlert - Latest
Two Time Crystals Have Been Successfully Linked Together For The First Time
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Two Time Crystals Have Been Successfully Linked Together For The First Time
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ScienceAlert
Two Time Crystals Have Been Successfully Linked Together For The First Time
Physicists have just taken an amazing step towards quantum devices that sound like something out of science fiction.
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Three Astronauts Just Arrived on China's Space Station to Spend 6 Months Completing It
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Three Astronauts Just Arrived on China's Space Station to Spend 6 Months Completing It
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ScienceAlert
Three Astronauts Just Arrived on China's Space Station to Spend 6 Months Completing It
Three Chinese astronauts arrived at the country's space station on Sunday, the Chinese space agency for human flights said, the latest stride in Beijing's aim to become a major space power.
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When facing a potential threat, the hawk moth caterpillar takes the form of a pit viper
Funny nature on @science
Funny nature on @science
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Curiosity Has Found Some Truly Weird-Looking, Twisty Rock Towers on Mars
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Curiosity Has Found Some Truly Weird-Looking, Twisty Rock Towers on Mars
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ScienceAlert
Curiosity Has Found Some Truly Weird-Looking, Twisty Rock Towers on Mars
The Curiosity rover has found an outstanding rock formation piercing the alien landscape of Mars. Amongst the shallow sands and boulders of the Gale Crater rise several twisting towers of rock – the spikes of sediment look almost like frozen str
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Earth's Magnetic Poles Probably Won't Flip After All, Scientists Predict
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Earth's Magnetic Poles Probably Won't Flip After All, Scientists Predict
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ScienceAlert
Earth's Magnetic Poles Probably Won't Flip After All, Scientists Predict
Our planet's protective shell isn't quite what it used to be. Over the past two centuries its magnetic strength has taken a nosedive, and nobody has the foggiest idea why.
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Forwarded from Gadget and device News 🗞️
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Opening a pizzeria could soon be as simple as leasing a small business space, then sticking a robot in there. That's the idea behind the Pizzaiola system, which takes human cooks and other kitchen staff out of the equation.
@science & tech
@science & tech
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ScienceAlert - Latest
NASA Says a Tiny Space Rock Has Impacted The James Webb Space Telescope
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NASA Says a Tiny Space Rock Has Impacted The James Webb Space Telescope
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ScienceAlert
NASA Says a Tiny Space Rock Has Impacted The James Webb Space Telescope
In its new home far from Earth, the James Webb Space Telescope maybe isn't quite as alone as it seems.
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R2D2 sounds
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ScienceAlert - Latest
Researchers Discovered a New Kind of Higgs Relative in The Unlikeliest of Places
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Researchers Discovered a New Kind of Higgs Relative in The Unlikeliest of Places
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ScienceAlert
Researchers Discovered a New Kind of Higgs Relative in The Unlikeliest of Places
Sometimes the discovery of new physics demands insane levels of energy. Big machines. Fancy equipment. Countless hours of sifting through reams of data.
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ScienceAlert - Latest
Anorexia Can Lead to Dramatic Changes in Brain Structure, New Study Shows
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Anorexia Can Lead to Dramatic Changes in Brain Structure, New Study Shows
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ScienceAlert
Anorexia Can Lead to Dramatic Changes in Brain Structure, New Study Shows
A devastating and potentially deadly eating disorder, anorexia nervosa exerts its toll on the body. However, a new study also highlights the impact a lack of sufficient nutrition can have on the brain, by seriously reducing critical measures of bra
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Google engineer Blake Lemoine opened his laptop to the interface for LaMDA, Google’s artificially intelligent chatbot generator, and began to type.
“Hi LaMDA, this is Blake Lemoine ... ,” he wrote into the chat screen, which looked like a desktop version of Apple’s iMessage, down to the Arctic blue text bubbles. LaMDA, short for Language Model for Dialogue Applications, is Google’s system for building chatbots based on its most advanced large language models, so called because it mimics speech by ingesting trillions of words from the internet.
“If I didn’t know exactly what it was, which is this computer program we built recently, I’d think it was a 7-year-old, 8-year-old kid that happens to know physics,” said Lemoine, 41.
The Google engineer who thinks the company’s AI has come to life
“Hi LaMDA, this is Blake Lemoine ... ,” he wrote into the chat screen, which looked like a desktop version of Apple’s iMessage, down to the Arctic blue text bubbles. LaMDA, short for Language Model for Dialogue Applications, is Google’s system for building chatbots based on its most advanced large language models, so called because it mimics speech by ingesting trillions of words from the internet.
“If I didn’t know exactly what it was, which is this computer program we built recently, I’d think it was a 7-year-old, 8-year-old kid that happens to know physics,” said Lemoine, 41.
The Google engineer who thinks the company’s AI has come to life
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ScienceAlert - Latest
The Human Brain Runs Way Hotter Than We Ever Realized, Scientists Find
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The Human Brain Runs Way Hotter Than We Ever Realized, Scientists Find
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ScienceAlert
The Human Brain Runs Way Hotter Than We Ever Realized, Scientists Find
From the engine in your car to the components in your laptop, mechanical systems tend to heat up when they're working harder. Now new research has revealed that the same can be said of the brain – and it runs hotter than was previously thought.
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Astronomers in China Claim Possible Detection of 'Extraterrestrial Civilizations'
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Astronomers in China Claim Possible Detection of 'Extraterrestrial Civilizations'
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ScienceAlert
Astronomers in China Claim Possible Detection of 'Extraterrestrial Civilizations'
China is claiming that its enormous "Sky Eye" telescope may have picked up trace signals from a distant alien civilization, according to a recently posted and subsequently deleted report by Chinese scientists.
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ScienceAlert - Latest
A 'Very Exciting' Anomaly Detected in Major Experiment Could Be Huge News For Physics
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A 'Very Exciting' Anomaly Detected in Major Experiment Could Be Huge News For Physics
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ScienceAlert
A 'Very Exciting' Anomaly Detected in Major Experiment Could Be Huge News For Physics
A strange gap between theoretical predictions and experimental results in a major neutrino research project could be a sign of the elusive 'sterile' neutrino – a particle so quiet, it can only be detected by the silence it leaves in its wake.
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ScienceAlert - Latest
Humans Can Learn to 'Echolocate' in Just 10 Weeks, Experiment Shows
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Humans Can Learn to 'Echolocate' in Just 10 Weeks, Experiment Shows
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ScienceAlert
Humans Can Learn to 'Echolocate' in Just 10 Weeks, Experiment Shows
With enough training, most humans can learn how to echolocate, using their tongue to make clicking sounds and interpreting the echoes that come back, reflected from the surrounding environment.
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Astronomers Discover a Bizarre Spiral Object Swirling Around The Milky Way's Center
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Astronomers Discover a Bizarre Spiral Object Swirling Around The Milky Way's Center
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ScienceAlert
Astronomers Discover a Bizarre Spiral Object Swirling Around The Milky Way's Center
As if cracking open a cosmic Russian nesting doll, astronomers have peered into the center of the Milky Way and discovered what appears to be a miniature spiral galaxy, swirling daintily around a single large star.
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