Synergistic Integration of Chemo-Resistive and SERS Sensing for Label-Free Multiplex Gas Detection

Synergistic Integration of Chemo-Resistive and SERS Sensing for Label-Free Multiplex Gas Detection

© 2021 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 33(2021), 44 vom: 27. Nov., Seite e2105199
1. Verfasser: Han, Hyeuk Jin (VerfasserIn)
Weitere Verfasser: Cho, Seunghee H, Han, Sangjun, Jang, Ji-Soo, Lee, Gyu Rac, Cho, Eugene N, Kim, Sang-Joon, Kim, Il-Doo, Jang, Min Seok, Tuller, Harry L, Cha, Judy J, Jung, Yeon Sik
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article gas sensors metal oxides multimodal nanoarchitectures nanotransfer printing plasmonic metals Gold 7440-57-5 Gases mehr... Tin Compounds stannic oxide KM7N50LOS6
Beschreibung
Zusammenfassung:© 2021 Wiley-VCH GmbH.
Practical sensing applications such as real-time safety alerts and clinical diagnoses require sensor devices to differentiate between various target molecules with high sensitivity and selectivity, yet conventional devices such as oxide-based chemo-resistive sensors and metal-based surface-enhanced Raman spectroscopy (SERS) sensors usually do not satisfy such requirements. Here, a label-free, chemo-resistive/SERS multimodal sensor based on a systematically assembled 3D cross-point multifunctional nanoarchitecture (3D-CMA), which has unusually strong enhancements in both "chemo-resistive" and "SERS" sensing characteristics is introduced. 3D-CMA combines several sensing mechanisms and sensing elements via 3D integration of semiconducting SnO2 nanowire frameworks and dual-functioning Au metallic nanoparticles. It is shown that the multimodal sensor can successfully estimate mixed-gas compositions selectively and quantitatively at the sub-100 ppm level, even for mixtures of gaseous aromatic compounds (nitrobenzene and toluene) with very similar molecular structures. This is enabled by combined chemo-resistive and SERS multimodal sensing providing complementary information
Beschreibung:Date Completed 24.07.2024
Date Revised 24.07.2024
published: Print-Electronic
Citation Status MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202105199