📬❄️📦Adafruit Holiday Shipping Deadlines 2019: Attention all domestic customers! Please place UPS Ground and USPS First Class & Priority orders by 11am ET Monday December 9, 2019 📬❄️📦 Attention all international customers! Please place all UPS WORLDWIDE EXPRESS; SAVER, and DHL EXPRESS WORLDWIDE orders by 11am ET Monday December 9, 2019 📬❄️📦
0

MIT researchers develop wearable toxic gas sensor #WearableWednesday

NewImage

Via TechCrunch

A team of four MIT researchers has developed a new wearable sensor that can detect toxic gases and talk to smartphones or other wireless devices to warn users when they are in danger.

Using these sensors, the researchers hope to design badges that weigh less than a credit card and can be easily worn by military personnel on the battlefield.

“Soldiers carry a lot of equipment already, and a lot of communication devices,” said Timothy Swager, Professor of Chemistry at MIT and lead author on a paper describing the sensors that was published in the Journal of the American Chemical Society. The paper’s co-authors are post-doc student Shinsuke Ishihara and PhD students Joseph Azzarelli and Markrete Krikorian.

“Soldiers have no wearable sensors to detect toxic gases. They use a variety of detectors, but they’re not the kind of thing you can carry around. Our sensors weigh less than a piece of paper,” Swager said.

In layman’s terms, the system works as follows. The sensor is a circuit loaded with carbon nanotubes. Carbon nanotubes are cylindrical molecules that look like little wires.

“Let’s think about the wires we’re familiar with, such as electric wires,” Swager explained. “They’re wrapped in plastic.” As a result, the actual wire is insulated from the external environment and users are safe. In the carbon nanotubes case, insulation is not achieved thanks to a plastic case. “We wrapped the nanotubes with a polymer,” Swager explained.

When exposed to toxic gases, such as Sarin gas, the polymer breaks apart and the insulation disappears. Consequently, the nanotubes touch each other and become conductive. When this happens, a signal is sent to the smartphone.

Read more.


Flora breadboard is Every Wednesday is Wearable Wednesday here at Adafruit! We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 14,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Will it scale? Culture at Google, it seems, will not.

Wearables — Playtime reference

Electronics — Can’t afford a current probe?

Biohacking — Vitamin-C + Gelatin for Accelerated Recovery

Python for Microcontrollers — MP3 decoding, CircuitPython snakes its way to Fomu, NXP, and more! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit

Adafruit IoT Monthly — Machine Learning 101, PWNing the ESP32, and more!

Microsoft MakeCode — Lenticular Art Display with Crickit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.