多通道石英晶体微天平

Multichannel quartz crystal microbalance.

作者信息

Tatsuma T, Watanabe Y, Oyama N, Kitakizaki K, Haba M

机构信息

Department of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology, Naka-cho, Koganei, Tokyo 184-8588, Japan.

出版信息

Anal Chem. 1999 Sep 1;71(17):3632-6. doi: 10.1021/ac9904260.

DOI:10.1021/ac9904260

PMID:21662871

Abstract

Arrays of quartz crystal resonators are fabricated on a single quartz wafer as a multichannel quartz crystal microbalance (MQCM). Three types of four-channel array of 10-MHz resonators are prepared and tested. Mechanical oscillation of each channel is entrapped within the channel almost completely, so that the interference between the channels via the quartz crystal plate is almost negligible. A mass change on each channel is quantitatively evaluated on the basis of Sauerbrey's law. Thus, each channel of a MQCM device can be used as an independent QCM. Influence from a longitudinal wave generated from another channel is also negligible compared to the influence from the wave from the monitored channel itself. The simultaneous oscillation of channels is also possible. The potential applicability of MQCM to the two-dimensional mapping of mass changes is demonstrated.

摘要

石英晶体谐振器阵列在单个石英晶片上制造，作为多通道石英晶体微天平（MQCM）。制备并测试了三种类型的10MHz谐振器四通道阵列。每个通道的机械振荡几乎完全被限制在通道内，因此通道之间通过石英晶体板的干扰几乎可以忽略不计。基于绍尔布雷定律对每个通道上的质量变化进行定量评估。因此，MQCM设备的每个通道都可以用作独立的QCM。与来自被监测通道自身的波的影响相比，来自另一个通道产生的纵波的影响也可以忽略不计。通道的同时振荡也是可能的。证明了MQCM在质量变化二维映射方面的潜在适用性。