! Breaking News ! Alumni member of Smart Plastics Group, Dr. Bijandra Kumar, published an interesting article on graphene nanosensors…[Read more on Nanowerk News]
| (Nanowerk News) Researchers have discovered a technique for controlling the sensitivity of graphene chemical sensors. | |
| The sensors, made of an insulating base coated with a graphene sheet–a single-atom-thick layer of carbon–are already so sensitive that they can detect an individual molecule of gas. But manipulating the chemical properties of the insulating layer, without altering the graphene layer, may yet improve their ability to detect the most minute concentrations of various gases. | |
| The finding « will open up entirely new possibilities for modulation and control of the chemical sensitivity of these sensors, without compromising the intrinsic electrical and structural properties of graphene, » says Amin Salehi-Khojin, assistant professor of mechanical and industrial engineering at the University of Illinois at Chicago, and principal investigator on the study. He and his coworkers at the UIC College of Engineering collaborated with researchers from the Beckman Institute and the Micro and Nanotechnology Laboratory at the University of Illinois at Urbana-Champaign and two institutions in Korea. Their findings are reported in the journal Nano Letter, available online in advance of publication ( » The Role of External Defects in Chemical Sensing of Graphene Field-Effect Transistors »). | |
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| Amin Salehi-Khojin, asst. professor of mechanical/industrial engineering, and his two postdocs, Poya Yasaei (dark hair sideburns) and Bjandra Kumar (maroon shirt) |
Source: By Jeanne Galatzer-Levy, University of Illinois at Chicago
