@article{0cfd0a0b0e6a45c2af8f45e4ea7e0748,
title = "Surface plasmon-enhanced gas sensing in single gold-peapodded silica nanowires",
abstract = "An intriguing system featuring a wide band gap silica nanowire (SiO xNW) that absorbs visible light (532 nm) via the surface plasmons (SPs) of embedded gold nanoparticles (Au NPs) is reported for sensing applications. We report SP resonance enhanced molecular oxygen sensing by single Au-NPs@SiOx NWs under 532-nm illumination (visible light) at room temperature. Excellent selectivity of the Au-NPs@SiOx NWs to molecular oxygen in air has been demonstrated. Illumination improved the sensing properties in terms of response and fast recovery time, which can be attributed to the photogenerated hole-mediated oxygen desorption. A general strategy of light-modulated sensing, vis-{\`a} -vis dark, is demonstrated in a wide band gap single NW system that could potentially open up routes for biosensing, because silica and Au both lack biotoxicity.",
keywords = "Gas sensor, Nanowire, Silica, Surface plasmon",
author = "Wang, {Sheng Bo} and Huang, {Yi Fan} and Surojit Chattopadhyay and Chang, {Shoou Jinn} and Chen, {Ruei San} and Chong, {Cheong Wei} and Hu, {Ming Shien} and Chen, {Li Chyong} and Chen, {Kuei Hsien}",
note = "Funding Information: This work was supported by the Ministry of Education, National Science Council, National Taiwan University, National Cheng Kung University (NCKU), National Yang-Ming University and Academia Sinica, Taiwan. Technical support was provided by the Core Facilities for Nano Science and Technology, Academia Sinica and National Taiwan University. Fruitful discussion and technical help from Dr Han Hsieh-Cheng was also appreciated.",
year = "2013",
month = may,
doi = "10.1038/am.2013.17",
language = "English",
volume = "5",
journal = "NPG Asia Materials",
issn = "1884-4049",
publisher = "Nature Publishing Group",
number = "5",
}