Partial casting method on water surface and preparation of multi-channel saw chemical sensor
Partial casting method on water surface and preparation of multi-channel saw chemical sensor
复制标题
水面局部浇铸方法及多通道锯化学传感器的制备
DOI：
10.1080/10587259408039219
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
T. Nomura
中科院分区：
文献类型：
--
作者：
T. Moriizumi;A. Saitoh;T. Nomura
声表面波（SAW）器件可用作气相化学传感器。利用声表面波器件的高频特性和多通道结构，可以实现高灵敏度、多通道的气体传感器。然而，一般难以在单片多通道SAW器件的传播路径上沉积不同的气敏膜存款。本文介绍了一种新的涂敷方法，用这种方法可以在光路上涂敷几种类型的气敏分子膜。这种方法称为水面局部抛撒法。它利用梯形框架分割出的水面，通过框架的垂直运动，使铺展在框架内的分子膜受到压缩，沉积在置于框架顶部的基片上。在36°Y-X LiTaO 3声表面波延迟线振荡器上涂覆了几层二烷基聚离子复合物和二肉豆蔻酰磷脂酰乙醇胺的双层膜，并成功地测量了气味传感器的特性。实验结果表明，该方法适用于各种分子膜的多通道声表面波化学传感器的制作。
Surface acoustic wave (SAW) devices can be used as vapor phase chemical sensors. If we make use of SAW devices with high frequency properties and multi-channel structures, highly sensitive and multi gas sensors can be realized. However, it is generally difficult to deposit different gas sensitive films on the propagation paths of monolithic multi-channel SAW devices. This paper describes the new coating method by which several types of gas-sensitive molecular films can be coated on the paths. The method is called partial casting method on water surface. It makes use of the water surface segmented by a trapezoidal frame, and the molecular film spread in the frame is compressed by the vertical movement of the frame and deposited on the substrate placed on the frame top. Several bilayers of dialkyl polyion complex and dimyristoyl phosphatidyl ethanolamine were coated on 36°Y-X LiTaO 3 SAW delay line oscillators, and odor sensor characteristics were successfully measured. It was confirmed from the present experiments that the method can be applicable to fabrication of multi-channel SAW chemical sensors with various kinds of molecular films.