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Created
February 17, 2023 11:50
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Researcher Metadata Database
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Added
Manuscript_v4_-_clean.pdf
February 17, 2023 11:50
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Added Creator Alexander C. Castonguay
February 17, 2023 11:50
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Researcher Metadata Database
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Added Creator Ning Yi
February 17, 2023 11:50
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Added Creator Bowen Li
February 17, 2023 11:50
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Added Creator Jiang Zhao
February 17, 2023 11:50
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Added Creator Han Li
February 17, 2023 11:50
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Added Creator Yuyan Gao
February 17, 2023 11:50
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Added Creator Nabila N. Nova
February 17, 2023 11:50
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Added Creator Naveen Tiwari
February 17, 2023 11:50
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Added Creator Lauren D. Zarzar
February 17, 2023 11:50
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Researcher Metadata Database
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Added Creator Huanyu Cheng
February 17, 2023 11:50
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Researcher Metadata Database
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Published
February 17, 2023 11:50
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Researcher Metadata Database
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Updated
Keyword, Publisher, Description, and 1 more
Show Changes
May 27, 2023 13:24
by
avs5190
Keyword
- Gas sensor, Laser direct writing, Micropatterning , Nanocrystalline, Metal oxide, Laser synthesis
Publisher
ACS applied materials and interfaces
- ACS Applied Materials and Interfaces
Description
<p>Fabrication and processing approaches that facilitate the ease of patterning and the integration of nanomaterials into sensor platforms are of significant utility and interest. In this work, we report the use of laser-induced thermal voxels (LITV) to fabricate microscale, planar gas sensors directly from solutions of metal salts. LITV offers a facile platform to directly integrate nanocrystalline metal oxide and mixed metal oxide materials onto heating platforms, with access to a wide variety of compositions and morphologies including many transition metals and noble metals. The unique patterning and synthesis flexibility of LITV enable the fabrication of chemically and spatially tailorable microscale sensing devices. We investigate the sensing performance of a representative set of n-type and p-type LITV-deposited metal oxides and their mixtures (CuO, NiO, CuO/ZnO, and Fe<sub>2</sub>O<sub>3</sub>/Pt) in response to reducing and oxidizing gases (H<sub>2</sub>S, NO<sub>2</sub>, NH<sub>3</sub>, ethanol, and acetone). These materials show a broad range of sensitivities and notably a strong response of NiO to ethanol and acetone (407 and 301% R/R<sub>0</sub>at 250 °C, respectively), along with a 5- to 20-fold sensitivity enhancement for CuO/ZnO to all gases measured over pure CuO, highlighting the opportunities of LITV for the creation of mixed-material microscale sensors.</p>
- <p>Fabrication and processing approaches that facilitate the ease of patterning and the integration of nanomaterials into sensor platforms are of significant utility and interest. In this work, we report the use of laser-induced thermal voxels (LITV) to fabricate microscale, planar gas sensors directly from solutions of metal salts. LITV offers a facile platform to directly integrate nanocrystalline metal oxide and mixed metal oxide materials onto heating platforms, with access to a wide variety of compositions and morphologies including many transition metals and noble metals. The unique patterning and synthesis flexibility of LITV enable the fabrication of chemically and spatially tailorable microscale sensing devices. We investigate the sensing performance of a representative set of n-type and p-type LITV-deposited metal oxides and their mixtures (CuO, NiO, CuO/ZnO, and Fe<sub>2</sub>O<sub>3</sub>/Pt) in response to reducing and oxidizing gases (H<sub>2</sub>S, NO<sub>2</sub>, NH<sub>3</sub>, ethanol, and acetone). These materials show a broad range of sensitivities and notably a strong response of NiO to ethanol and acetone (407 and 301% R/R<sub>0</sub> at 250 °C, respectively), along with a 5- to 20-fold sensitivity enhancement for CuO/ZnO to all gases measured over pure CuO, highlighting the opportunities of LITV for the creation of mixed-material microscale sensors.</p>
Publication Date
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Updated
April 04, 2024 10:22
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[unknown user]