Latest in Science

Image credit:

MIT pencils in carbon nanotube gas sensor that's cheaper, less hazardous (video)

Share
Tweet
Share

Sponsored Links

Carbon nanotube-based sensors are good at sniffing out all kinds of things, but applying the cylindrical molecules to a substrate has traditionally been a dangerous and unreliable process. Now, researchers at MIT have found a way to avoid the hazardous solvents that are currently used, by compressing commercially available nanotube powders into a pencil lead-shaped material. That allowed them to sketch the material directly onto paper imprinted with gold electrodes (as shown above), then measure the current flowing through the resisting carbon nanotubes -- allowing detection of any gases that stick to the material. It works even if the marks aren't uniform, according to the team, and the tech would open up new avenues to cheaper sensors that would be particularly adroit at detecting rotten fruit or natural gas leaks. For more info, sniff out the video after the break.


All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Share
Tweet
Share

Popular on Engadget

Senate approves $1 billion budget to help rural carriers replace Huawei gear

Senate approves $1 billion budget to help rural carriers replace Huawei gear

View
Citroën's new EV is a tiny two-seater that only costs $22 a month

Citroën's new EV is a tiny two-seater that only costs $22 a month

View
Clearview AI leak names businesses using its facial recognition database

Clearview AI leak names businesses using its facial recognition database

View
Apple's keyboard cover for the next iPad Pro could add a trackpad

Apple's keyboard cover for the next iPad Pro could add a trackpad

View
Facebook sues analytics firm that stole user data through third-party apps

Facebook sues analytics firm that stole user data through third-party apps

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr