Optical Detection of Argon Gas Flow Based on Vibration-Induced Change in Photoluminescence of a Semiconducting Single-Walled Carbon Nanotube Bundle
- Authors
- Kim, Hong-Seok; Kim, Woo-Jae; Strano, Michael S.; Han, Jae-Hee
- Issue Date
- Dec-2014
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Argon; Semiconducting; Single-Walled Carbon Nanotube Bundle; Photoluminescence; Gas Flow Sensor
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.12, pp.9131 - 9133
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 14
- Number
- 12
- Start Page
- 9131
- End Page
- 9133
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12061
- DOI
- 10.1166/jnn.2014.10109
- ISSN
- 1533-4880
- Abstract
- In this work, we demonstrate that Ar gas flow can be optically detected using mechanical vibration of a semiconducting single-walled carbon nanotube (SWCNT) bundle as a platform. A change in the photoluminescence (PL) intensity was induced by out-of-focusing of the SWCNT bundle of interest due to vibration caused by the introduced gas stream, for which a gas flow control system was installed in an optical microscope. The PL intensity was found to change systemically with the Ar flow rates in a range of relatively large flow rate intervals [0.70 to 3.0 standard cubic liters per minute (SLM) with 0.1-0.5 SLM intervals] with a noticeable hysteresis. It was, however, difficult to obtain a detectable PL change in a range of very small flow rate intervals (0.67 to 0.70 SLM with a 0.01 SLM interval). The detailed results and underlying mechanism are discussed in detail.
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Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
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