MIT researchers are developing a new textile fiber that can "hear" and produce sound. They've published their latest breakthroughs in the scientific journal Nature Materials
. From MIT News:
Applications could include clothes that are themselves sensitive microphones, for capturing speech or monitoring bodily functions, and tiny filaments that could measure blood flow in capillaries or pressure in the brain...
"Fibers that can hear and sing"
"You can actually hear them, these fibers," says Noémie Chocat, a graduate student in the materials science department. "If you connected them to a power supply and applied a sinusoidal current" – an alternating current whose period is very regular – "then it would vibrate. And if you make it vibrate at audible frequencies and put it close to your ear, you could actually hear different notes or sounds coming out of it."
In addition to wearable microphones and biological sensors, applications of the fibers could include loose nets that monitor the flow of water in the ocean and large-area sonar imaging systems with much higher resolutions: A fabric woven from acoustic fibers would provide the equivalent of millions of tiny acoustic sensors.
The fine folks at Techquickie put together a quick overview that takes the mystery out of the dizzying array of audio file formats, including when to use what and brief histories of the most common types.
MetaLimbs is a robotic system that provides the wearer with an extra pair of arms. The mechanical arms are controlled by the user’s legs, feet, and toes. The researchers from Keio University and the University of Tokyo will present their work at next month’s SIGGRAPH 2017 conference in Los Angeles.
Buckets hanging on maple trees may have worked great 200 years ago, but modern producers use a system like the internet: a series of tubes!
Although flagship smartphones are unlikely to adopt heavy-duty outer casing anytime soon, you can always prepare your device for the outdoors with a beefy case and and an external battery like this Nomad Tile Trackable PowerPack, available in the Boing Boing Store for $119.95.The Nomad Tile can fully recharge an iPhone 7 over three times […]
Even though credit cards now feature an EMV chip for securing transactions, they still have to include the magnetic strip for compatibility with older point of sale systems. Because of this, there’s no way for the chip’s new security capabilities to protect against card skimmers in the wild.How do you protect yourself from legacy-technology-induced fraud? […]
As the old saying goes, “You should sit in meditation for 30 minutes every day. Unless you are too busy, in which case you should meditate for an hour.” Since most of us have an endless list of things to do and people to see, carving out quiet time can feel impossible, especially when most […]