title: Hybrid Photonic Cavity with Metal-Organic Framework Coatings for the Ultra-Sensitive Detection of Volatile Organic Compounds with High Immunity to Humidity.
abstract: Detection of volatile organic compounds (VOCs) at parts-per-billion (ppb) level is one of the most challenging tasks for miniature gas sensors because of the high requirement on sensitivity and the possible interference from moisture. Herein, for the first time, we present a novel platform based on a hybrid photonic cavity with metal-organic framework (MOF) coatings for VOCs detection. We have fabricated a compact gas sensor with detection limitation ranging from 29 to 99 ppb for various VOCs including styrene, toluene, benzene, propylene and methanol. Compared to the photonic cavity without coating, the MOF-coated solution exhibits a sensitivity enhancement factor up to 1000. The present results have demonstrated great potential of MOF-coated photonic resonators in miniaturized gas sensing applications.
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-02 Innovis Tower, 138634, Singapore.
authors.forename: Jifang
authors.initials: J
authors.lastname: Tao
authors.affiliation: Department of Chemical &Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
authors.forename: Xuerui
authors.initials: X
authors.lastname: Wang
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-02 Innovis Tower, 138634, Singapore.
authors.forename: Tao
authors.initials: T
authors.lastname: Sun
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-02 Innovis Tower, 138634, Singapore.
authors.forename: Hong
authors.initials: H
authors.lastname: Cai
authors.affiliation: Department of Chemical &Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
authors.forename: Yuxiang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Chemical &Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
authors.forename: Tong
authors.initials: T
authors.lastname: Lin
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-02 Innovis Tower, 138634, Singapore.
authors.forename: Dongliang
authors.initials: D
authors.lastname: Fu
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-02 Innovis Tower, 138634, Singapore.
authors.forename: Lennon Lee Yao
authors.initials: LL
authors.lastname: Ting
authors.affiliation: Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-02 Innovis Tower, 138634, Singapore.
authors.forename: Yuandong
authors.initials: Y
authors.lastname: Gu
authors.affiliation: Department of Chemical &Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
authors.forename: Dan
authors.initials: D
authors.lastname: Zhao
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods; D006813:Humidity; D000073396:Metal-Organic Frameworks; D008962:Models, Theoretical; D017785:Photons; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D000073396:Metal-Organic Frameworks; D055549:Volatile Organic Compounds