Xu Haowen, Song Yutong, Zhu Panpan, Zhao Wanli, Liu Tongyu, Wang Qi, Zhao Tianming
College of Sciences, Northeastern University, Shenyang 110819, China.
Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin 300308, China.
Materials (Basel). 2021 Dec 27;15(1):189. doi: 10.3390/ma15010189.
Alcohol detection plays a key role in food processing and monitoring. Therefore, we present a fast, high reproducibility and label-free characteristics alcohol photochemical sensor based on the surface plasmon resonance (SPR) effect. By growing ZnO nanoflowers on Au film, the SPR signal red-shifted in the visible region as the alcohol concentration increased. More interestingly, the sensitivity improved to 127 nm/%, which is attributed to the ZnO nanoflowers/Au structure. The goodness of the linear fit was more than 0.99 at a range from 0 vol% to 95 vol% which ensures detection resolution. Finally, a practical application for distinguishing five kinds of alcoholic drinks has been demonstrated. The excellent sensing characteristics also indicate the potential of the device for applications in the direction of food processing and monitoring, and the simple structure fabrication and economic environmental protection make it more attractive.
酒精检测在食品加工和监测中起着关键作用。因此，我们提出了一种基于表面等离子体共振（SPR）效应的快速、高重现性且无标记的酒精光化学传感器。通过在金膜上生长氧化锌纳米花，随着酒精浓度的增加，SPR信号在可见光区域发生红移。更有趣的是，灵敏度提高到了127纳米/%，这归因于氧化锌纳米花/金结构。在0体积%至95体积%的范围内，线性拟合优度大于0.99，确保了检测分辨率。最后，展示了该传感器用于区分五种酒精饮料的实际应用。优异的传感特性也表明了该器件在食品加工和监测方向上的应用潜力，并且其简单的结构制造和经济环保特性使其更具吸引力。
