Lim Gi-Hwan, Kim In-Yea, Park Ji-Young, Choa Yong-Ho, Lim Jae-Hong
Department of Materials Science and Engineering, Gachon University, Seongnam-si 13120, Republic of Korea.
Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea.
Nanomaterials (Basel). 2023 Dec 26;14(1):70. doi: 10.3390/nano14010070.
Alcohol ingested by humans can be analyzed via breath tests; however, approximately 1% can be excreted via the skin. In this paper, we present a capacitive sensor using hydrophobically treated anodic aluminum oxide (AAO) capable of detecting alcohol excreted through the epidermis. The degree of hydrophobicity based on the duration of exposure to 3-aminopropyltriethoxysilane vapor comprising a small number of Si-NH functional groups on the AAO surface was confirmed and the optimal exposure time was confirmed to be 60 min. The hydrophobized AAO showed a 4.8% reduction in sensitivity to moisture. Simultaneously, the sensitivity of the sensor to ethanol decreased by only 12%. Lastly, the fabricated sensor was successfully operated by attaching it to an ankle-type breathalyzer.
人体摄入的酒精可通过呼气测试进行分析；然而，约1%的酒精可通过皮肤排出。在本文中，我们展示了一种使用经过疏水处理的阳极氧化铝（AAO）的电容式传感器，该传感器能够检测通过表皮排出的酒精。基于暴露于3-氨丙基三乙氧基硅烷蒸汽的持续时间确定了AAO表面少量Si-NH官能团的疏水性程度，并确定最佳暴露时间为60分钟。疏水化的AAO对水分的敏感度降低了4.8%。同时，该传感器对乙醇的敏感度仅下降了12%。最后，将制成的传感器附着在脚踝式呼气酒精含量探测器上，成功实现了其运行。
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