Measurement of Mass and Surface Stress at One Electrode of a Quartz Oscillator
Measurement of Mass and Surface Stress at One Electrode of a Quartz Oscillator
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石英振荡器一个电极的质量和表面应力的测量
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
J. Pietrucha
中科院分区：
文献类型：
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作者：
K. Heusler;A. Grzegorzewski;L. Jäckel;J. Pietrucha
本文概述了由石英振荡器在不同的单侧压力下的频率测量值计算质量和表面应力变化的理论。的质量的明显变化的各种贡献进行了讨论。实验是指在静电吸附过程中钾离子和氟离子的有效摩尔质量的测定和多晶金上的化学吸附铅的质量与电荷的比较。吸附物质的有效摩尔质量也可以通过将质量变化与表面浓度进行比较来确定，例如通过放射性示踪剂方法确定，如在铁上的钝化氧化物膜处的氯化物吸附的实例中。像钝化氧化膜这样的非常薄的膜的密度可以通过比较质量变化与光学测量的厚度来获得。与理论预期一致，压表面应力被定性地发现铅在金上的欠电位沉积。在钝化铁上生长的氧化膜中，观察到非常大的压缩侧压力。
The theory for the calculation of changes of mass and surface stress from frequency measurements at a quartz oscillator subject to different onesided pressures is outlined. The various contributions to apparent changes of the mass are discussed. Experiments refer to the determination of effective molar masses of potassium ions and fluoride ions during electrostatic adsorption and of chemisorbed lead both on polycrystalline gold by a comparison of masses to charges. Effective molar masses of adsorbed species can also be determined by comparison of mass changes to surface concentrations e.g. determined by the radiotracer method as in the example of the adsorption of chloride at the passivating oxide film on iron. The density of very thin films like the passivating oxide film can be obtained by comparing mass changes to thicknesses from optical measurements. In agreement with theoretical expectation, compressive surface stresses were qualitatively found for the underpotential deposition of lead on gold. In the growing oxide film on passive iron very large compressive lateral pressures were observed.