气候变化领域集成服务门户(CCPortal): Low Part-Per-Trillion, Humidity Resistant Detection of Nitric Oxide Using Microtoroid Optical Resonators

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DOI	10.1021/acsami.3c16012
	Low Part-Per-Trillion, Humidity Resistant Detection of Nitric Oxide Using Microtoroid Optical Resonators
	Xu, Yinchao; Stanko, Allison M.; Cerione, Chloe S.; Lohrey, Trevor D.; McLeod, Euan; Stoltz, Brian M.; Su, Judith
发表日期	2024
ISSN	1944-8244
EISSN	1944-8252
起始页码	16
结束页码	4
卷号	16 期号:4
英文摘要	The nitric oxide radical plays pivotal roles in physiological as well as atmospheric contexts. Although the detection of dissolved nitric oxide in vivo has been widely explored, highly sensitive (i.e., low part-per-trillion level), selective, and humidity-resistant detection of gaseous nitric oxide in air remains challenging. In the field, humidity can have dramatic effects on the accuracy and selectivity of gas sensors, confounding data, and leading to overestimation of gas concentration. Highly selective and humidity-resistant gaseous NO sensors based on laser-induced graphene were recently reported, displaying a limit of detection (LOD) of 8.3 ppb. Although highly sensitive (LOD = 590 ppq) single-wall carbon nanotube NO sensors have been reported, these sensors lack selectivity and humidity resistance. In this report, we disclose a highly sensitive (LOD = 2.34 ppt), selective, and humidity-resistant nitric oxide sensor based on a whispering-gallery mode microtoroid optical resonator. Excellent analyte selectivity was enabled via novel ferrocene-containing polymeric coatings synthesized via reversible addition-fragmentation chain-transfer polymerization. Utilizing a frequency locked optical whispering evanescent resonator system, the microtoroid's real-time resonance frequency shift response to nitric oxide was tracked with subfemtometer resolution. The lowest concentration experimentally detected was 6.4 ppt, which is the lowest reported to date. Additionally, the performance of the sensor remained consistent across different humidity environments. Lastly, the impact of the chemical composition and molecular weight of the novel ferrocene-containing polymeric coatings on sensing performance was evaluated. We anticipate that our results will have impact on a wide variety of fields where NO sensing is important such as medical diagnostics through exhaled breath, determination of planetary habitability, climate change, air quality monitoring, and treating cardiovascular and neurological disorders.
英文关键词	whispering-gallery mode; microresonator; gassensor; nitric oxide; RAFT polymerization; ferrocene; humidity resistance
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001155571900001
来源期刊	ACS APPLIED MATERIALS & INTERFACES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302053
作者单位	University of Arizona; University of Arizona; California Institute of Technology
推荐引用方式 GB/T 7714	Xu, Yinchao,Stanko, Allison M.,Cerione, Chloe S.,et al. Low Part-Per-Trillion, Humidity Resistant Detection of Nitric Oxide Using Microtoroid Optical Resonators[J],2024,16(4).
APA	Xu, Yinchao.,Stanko, Allison M..,Cerione, Chloe S..,Lohrey, Trevor D..,McLeod, Euan.,...&Su, Judith.(2024).Low Part-Per-Trillion, Humidity Resistant Detection of Nitric Oxide Using Microtoroid Optical Resonators.ACS APPLIED MATERIALS & INTERFACES,16(4).
MLA	Xu, Yinchao,et al."Low Part-Per-Trillion, Humidity Resistant Detection of Nitric Oxide Using Microtoroid Optical Resonators".ACS APPLIED MATERIALS & INTERFACES 16.4(2024).