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SM ISO690:2012 LUPAN, Oleg, ADELUNG, Rainer, POSTICA, Vasile, ABABII, Nicolai, CHOW, Lee, VIANA, Bruno, PAUPORTE, Thierry. UV radiation and CH4 gas detection with a single ZnO:Pd nanowire. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 8, 29 ianuarie - 1 februarie 2017, San Francisco. Bellingham, Washington USA: SPIE, 2017, Ediția 8, Vol.10105, pp. 1-8. ISBN 978-151060651-7. ISSN 0277786X. DOI: https://doi.org/10.1117/12.2249841 |
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Proceedings of SPIE - The International Society for Optical Engineering Ediția 8, Vol.10105, 2017 |
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Conferința "Oxide-Based Materials and Devices" 8, San Francisco, Statele Unite ale Americii, 29 ianuarie - 1 februarie 2017 | ||||||
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DOI:https://doi.org/10.1117/12.2249841 | ||||||
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There is an increasing demand for sensors to monitor environmental levels of ultraviolet (UV) radiation and pollutant gases. In this work, an individual nanowire of Pd modified ZnO nanowire (ZnO:Pd NW) was integrated in a nanosensor device for efficient and fast detection of UV light and CH4 gas at room temperature. Crystalline ZnO:Pd nanowire/nanorod arrays were synthesized onto fluorine doped tin oxide (FTO) substrates by electrochemical deposition (ECD) at relative low-temperatures (90 °C) with different concentrations of PdCl2 in electrolyte solution and investigated by SEM and EDX. Nanodevices were fabricated using dual beam focused electron/ion beam (FIB/SEM) system and showed improved UV radiation response compared to pristine ZnO NW, reported previously by our group. The UV response was increased by one order in magnitude (∼ 11) for ZnO:Pd NW. Gas sensing measurements demonstrated a higher gas response and rapidity to methane (CH4 gas, 100 ppm) at room temperature, showing promising results for multifunctional applications. Also, due to miniature size and ultra-low power consumption of these sensors, it is possible to integrate them into portable devices easily, such as smartphones, digital clock, flame detection, missile lunching and other smart devices. |
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Cuvinte-cheie Methane, Multifunctional, nanosensor, UV light, ZnO |
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