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作 者:Zilun Wang Zeyu Zhao Suhan Jin Feilong Bian Ye Chang Xuexin Duan Xiangdong Men Rui You
机构地区:[1]State Key Laboratory of NBC Protection for Civilian,Beijing 102205,China [2]State Key Laboratory of Precision Measuring Technology&Instruments,Tianjin University,Tianjin 300072,China [3]School of Instrument Science and Opto-Electronics Engineering,Beijing Information Science and Technology University,Beijing 100192,China
出 处:《Microsystems & Nanoengineering》2024年第4期175-184,共10页微系统与纳米工程(英文)
摘 要:Supramolecules are considered as promising materials for volatile organic compounds(VOCs)sensing applications.The proper understanding of the sorption process taking place in host-guest interactions is critical in improving the pattern recognition of supramolecules-based sensing arrays.Here,we report a novel approach to investigate the dynamic host-guest recognition process by employing a bulk acoustic wave(BAW)resonator capable of producing multiple oscillation amplitudes and simultaneously recording multiple responses to VOCs.Self-assembled monolayers(SAMs)ofβ-cyclodextrin(β-CD)were modified on four BAW sensors to demonstrate the gas-surface interactions regarding oscillation amplitude and SAM length.Based on the method,a virtual sensor array(VSA)type electronic nose(e-nose)can be realized by pattern recognition of multiple responses at different oscillation amplitudes of a single sensor.VOCs analysis was realized respectively by using principal component analysis(PCA)for individual VOC identification and linear discriminant analysis(LDA)for VOCs mixtures classification.
关 键 词:OSCILLATION VOLATILE DYNAMIC
分 类 号:TP212[自动化与计算机技术—检测技术与自动化装置]
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