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Cicada wings have nanostructures which shows superhydrophobic property, non reflecting to the light, and antibacterial characteristics. To mimic the nano structure of a cicada wing, we fabricated nano-pillar array using metal assisted etching. Fabricated nano-pillar array showed higher antibacterial property for E. coli. Our introduced process has advantages for industrial usage because of low cost...
QCM is one of major sensing methods for volatile organic compounds (VOC), however, the method is affected by environments such as temperature, humidity, and airflow. To cancel the signals affected by environments, we used twin sensor QCM which has two electrodes on one quartz substrate. In fact, one Au electrode was used as a reference, and ZnO thin film was electrodeposited on the other electrode...
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