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Real-time, noise and drift resilient formaldehyde sensing at room temperature with aerogel filaments
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Chen, Zhuo, Zhou, Binghan, Xiao, Mingfei, Bhowmick, Tynee, Karthick Kannan, Padmanathan, Occhipinti, Luigi G., Gardner, Julian William and Hasan, Tawfique (2024) Real-time, noise and drift resilient formaldehyde sensing at room temperature with aerogel filaments. Science Advances, 10 (6). doi:10.1126/sciadv.adk6856 ISSN 2375-2548.
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Official URL: http://doi.org/10.1126/sciadv.adk6856
Abstract
Formaldehyde, a known human carcinogen, is a common indoor air pollutant. However, its real-time and selective recognition from interfering gases remains challenging, especially for low-power sensors suffering from noise and baseline drift. We report a fully 3D-printed quantum dot/graphene-based aerogel sensor for highly sensitive and real-time recognition of formaldehyde at room temperature. By optimizing the morphology and doping of printed structures, we achieve a record-high and stable response of 15.23% for 1 part per million formaldehyde and an ultralow detection limit of 8.02 parts per billion consuming only ∼130-microwatt power. On the basis of measured dynamic response snapshots, we also develop intelligent computational algorithms for robust and accurate detection in real time despite simulated substantial noise and baseline drift, hitherto unachievable for room temperature sensors. Our framework in combining materials engineering, structural design, and computational algorithm to capture dynamic response offers unprecedented real-time identification capabilities of formaldehyde and other volatile organic compounds at room temperature.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
SWORD Depositor: | Library Publications Router | ||||||
Journal or Publication Title: | Science Advances | ||||||
Publisher: | American Association for the Advancement of Science | ||||||
ISSN: | 2375-2548 | ||||||
Official Date: | 9 February 2024 | ||||||
Dates: |
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Volume: | 10 | ||||||
Number: | 6 | ||||||
DOI: | 10.1126/sciadv.adk6856 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) |
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