Photochemical Sensing of NO2 with SnO2 Nanoribbon Nanosensors at Room Temperature This work was supported by the Camille and Henry Dreyfus Foundation, 3M Corporation, the National Science Foundation, and the University of California, Berkeley. P.Y. is an Alfred P. Sloan Research Fellow. Work at the Lawrence Berkeley National Laboratory was supported by the Office of Science, Basic Energy Sciences, Division of Materials Science of the US Department of Energy. We thank the National Center for Electron Microscopy for the use of their facilities.
University of California, Berkeley
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Abstract
Good candidates for miniaturized, ultrasensitive gas sensors in many applications are individual single-crystalline SnO2 nanoribbons. Here it is shown that they can be used to detect ppm-level concentrations of NO2 at room temperature under UV illumination. The picture illustrates that they work reliably even near their resolution limit under 365-nm light.
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- Nanosensor
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