44
nanotimes News in Brief
12-01 :: January 2012
Graphene // Graphene Foam Detects Explosives, Emissions Better Than Today’s Gas Sensors
© Based on Material by RPI
can outperform leading commercial gas sensors in detecting potentially dangerous and explosive che- micals. The discovery opens the door for a new ge- neration of gas sensors to be used by bomb squads, law enforcement officials, defense organizations, and in various industrial settings.
A © Nikhil Koratkar
The new sensor successfully and repeatedly mea- sured ammonia (NH3
) and nitrogen dioxide (NO2 ) at
concentrations as small as 20 parts-per-million. Made from continuous graphene nanosheets that grow into a foam-like structure about the size of a postage stamp and thickness of felt, the sensor is flexible,
rugged, and finally overcomes the shortcomings that have prevented nanostructure-based gas detectors from reaching the marketplace.
“We are very excited about this new discovery, which we think could lead to new commercial gas sensors,” said Rensselaer Engineering Professor Ni- khil Koratkar, who co-led the study along with Pro- fessor Hui-Ming Cheng at the Shenyang National Laboratory for Materials Science at the Chinese Aca- demy 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.”
new study from Rensselaer Polytechnic Institute demonstrates how graphene foam
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97