Graphene foam detects explosives, emissions better than today




Remember this name: graphene. This wonder material is certainly on a lot of scientists’ lips these days, but in a few years from now, it will be on the lips of more and more people, as its fantastic properties will begin to be put to practical use.

Graphene is a planar sheet of Carbon, just one atom thick, densely packed in a honey comb structure. Recently, a new study from the Rensselaer Polytechnic Institute showed how graphene behaves much better than leading commercial gas sensors in detecting potentially dangerous and explosive chemicals, thus paving the way for a new generation of gas sensors to be used in various environmental and industrial settings, as well as by bomb squads, law enforcement officials, defense organizations.

The new sensor made out of a continuous graphene nanosheets grown in a foam like structure successfully and repeatedly measured ammonia (NH3) and nitrogen dioxide (NO2) at concentrations as small as 20 parts-per-million. The graphene sensor is about as big as a postal stamp.

Smoke Bomb With Ammonium Chloride - YouTube

“We are very excited about this new discovery, which we think could lead to new commercial gas sensors,” said Rensselaer Engineering Professor Nikhil Koratkar, who co-led the study along with Professor Hui-Ming Cheng at the Shenyang National Laboratory for Materials Science at the Chinese Academy of Sciences. “So far, the sensors have shown to be significantly more sensitive at detecting ammonia and nitrogen dioxide at room temperature than the commercial gas detectors on the market today.”

This is a breakthrough not only from a practical point of view, but Koratkar and his students made a significant breakthrough in nanotechnology itself.

How do I make ammonium triiode - Bombshock
Master your k3wl cratermakers and works bombs before you worry about ... NH3?
! I'm assuming you mean NI3 OR NH3? So does that mean ...
http://www.bombshock.com/old-forums-archive/oldforums-explosives/how-do-i-make-ammonium-triiode.html

“In a sense we have overcome the Achilles’ heel of nanotechnology for chemical sensing,” Koratkar said. “A single nanostructure works great, but doesn’t mean much when applied in a real device in the real world. When you try to scale it up to macroscale proportions, the interfaces defeats what you’re trying to accomplish, as the nanostructure’s properties are dominated by interfaces. Now we’re able to scale up graphene in a way that the interfaces are not present. This allows us to take advantage of the intrinsic properties of the nanostructure, yet work with a macroscopic structure that gives us repeatability, reliability, and robustness, but shows similar sensitivity to gas adsorbtion as a single nanostructure.”

Picture source

Make a Bomb Out of Ammonium Nitrate Fertilizer « Wonder How To
How to Make a smoke bomb out of creative household items Ammonium nitrate is
a dangerous explosive found in a surprising number of household items, ...
http://tag.wonderhowto.com/make-a-bomb-out-of-ammonium-nitrate-fertilizer/







http://www.zmescience.com

Calif. City Requires English Signs for Chinese Businesses
Businesses in the heavily Asian city of Monterey Park, Calif., now must post their signs in English as well as in Chinese. The requirement will help promote economic development and increase public safety, the City Council said in passing the change unanimously.
East Willow Grove
I've been told that I have a few too many nail polishes. I've been asked why do I have so many, what's the point. I've been asked how the hell can you do your nails so good. Well I'm here to show and tell you how it's all possible!
About