Journal
NANOSCALE RESEARCH LETTERS
Volume 10, Issue -, Pages 1-8Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-015-0729-2
Keywords
Nanowires; Self-assembly; Atomic layer deposition; Sensor; Halogen gas
Funding
- Basic Science Research Program through the National Research Foundation (NRF) [2013R1A1A1010802]
- Korea Ministry of Environment as 'The Environmental Health Action Program' [ARQ201303173002]
- The Converging Technology Program [2013001650001, ARQ201403075001]
- Korea Environmental Industry & Technology Institute (KEITI) [ARQ201303173002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2013R1A1A1010802] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
We demonstrate the selective adsorption of Ni/Si shell/core nanowires (Ni-Si NWs) with a Ni outer shell and a Si inner core on molecularly patterned substrates and their application to sensors for the detection of chlorine gas, a toxic halogen gas. The molecularly patterned substrates consisted of polar SiO2 regions and nonpolar regions of self-assembled monolayers of octadecyltrichlorosilane (OTS). The NWs showed selective adsorption on the polar SiO2 regions, avoiding assembly on the nonpolar OTS regions. Utilizing these assembled Ni-Si NWs, we demonstrate a sensor for the detection of chlorine gas. The utilization of Ni-Si NWs resulted in a much larger sensor response of approximately 23% to 5 ppm of chlorine gas compared to bare Ni NWs, due to the increased surface-to-volume ratio of the Ni-Si shell/core structure. We expect that our sensor will be utilized in the future for the real-time detection of halogen gases including chlorine with high sensitivity and fast response.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available