Open AccessStudy of Multichannel QCM Prospects in VOC Detection
Author(s) -
Soumik Bhattacharjee,
Aliza Aini Md Ralib,
Aparna Vyakaranam,
Satya Devu Svpk,
Sss Shameem,
Rafida Sulo,
Ahmad Anwar Zainuddin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1900/1/012020
Subject(s) - quartz crystal microbalance , vapours , materials science , adsorption , wafer , analytical chemistry (journal) , fabrication , piezoelectric sensor , sensitivity (control systems) , piezoelectricity , chromatography , nanotechnology , chemistry , electronic engineering , organic chemistry , composite material , medicine , alternative medicine , pathology , neuroscience , engineering , biology
Quartz Crystal Microbalance (QCM) is a mass detection sensor capable of measuring mass sensitivity at nanogram levels when based on a thickness shear mode piezoelectric crystal set at high frequencies. These sensors detect with high accuracy while benefiting from simple geometry, low costs, and ease of fabrication. Researchers prefer piezoelectric crystal sensors to the recent methods of gas chromatography/mass chromatography (GC/MC), high pressure liquid chromatography and nuclear magnetic resonance (NMR), which are time-consuming and not cost-effective. Unlike conventional QCM sensors that are limited to a single-electrode structure—which minimizes their scope of detection—the Multichannel QCM (MQCM) incorporates multiple sensors fabricated on a single crystal wafer. Each sensor is selectively coated with a sensing material that promotes the adsorption of target vapours. One of the widely used application of QCM sensors is in Volatile Organic Compounds (VOC) detection. This paper imparts a critical overview of recent publications on the application of MQCMs with various sensing materials.