Han, Hyeuk Jin 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 2024-01-19T13:31:33Z 2024-01-19T13:31:33Z 2022-01-25 2021-11 0935-9648 https://pubs.kist.re.kr/handle/201004/116184 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. English WILEY-V C H VERLAG GMBH Synergistic Integration of Chemo-Resistive and SERS Sensing for Label-Free Multiplex Gas Detection Article 10.1002/adma.202105199 1 ADVANCED MATERIALS, v.33, no.44 ADVANCED MATERIALS 33 44 scie scopus 000700059800001 2-s2.0-85115665199 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article LUNG-CANCER SENSOR NANOFIBERS SUBSTRATE CATALYSTS ARRAY gas sensors metal oxides multimodal nanoarchitectures nanotransfer printing plasmonic metals