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首页> 外文期刊>Journal of Applied Physics >Piezoresponse force and electrochemical strain microscopy in dual AC resonance tracking mode: Analysis of tracking errors
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Piezoresponse force and electrochemical strain microscopy in dual AC resonance tracking mode: Analysis of tracking errors

机译:双交流共振跟踪模式下的压电响应力和电化学应变显微镜:跟踪误差分析

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摘要

Contact-resonance atomic force microscopy allows the quantitative mapping of local viscoelastic and electromechanical properties. Excitation and amplification are generally described by the damped harmonic oscillator (DHO) model. The dual AC resonance tracking technique measures the amplitude and phase at two probing frequencies close to the resonance frequency and calculates the parameters of the DHO model from the amplitudes and phases. However, real systems show contact-resonance curves with slight deviations from the DHO model. In this work, we analyze how these deviations influence the obtained DHO parameters. We show that for a piezoelectric sample and for a mixed ion-electron conducting sample, the drive amplitude increases with increasing tracking error, while the opposite is observed for the amplification factor. Thus, in electrochemical strain microscopy experiments, the influence of the tracking error on the DHO parameters can be analyzed by calculating a tracking error image and studying correlations with the DHO parameter images.
机译:接触共振原子力显微镜可以定量绘制局部粘弹性和机电性能。激励和放大通常由阻尼谐波振荡器(DHO)模型来描述。双AC共振跟踪技术在接近共振频率的两个探测频率下测量振幅和相位,并根据振幅和相位计算DHO模型的参数。但是,实际系统显示的接触共振曲线与DHO模型略有偏差。在这项工作中,我们分析了这些偏差如何影响获得的DHO参数。我们表明,对于压电样品和混合离子电子导电样品,驱动幅度随跟踪误差的增加而增加,而放大倍数则相反。因此,在电化学应变显微镜实验中,可以通过计算跟踪误差图像并研究与DHO参数图像的相关性来分析跟踪误差对DHO参数的影响。

著录项

  • 来源
    《Journal of Applied Physics》 |2018年第3期|035106.1-035106.6|共6页
  • 作者单位

    Department of Chemistry, University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany;

    Institute of Applied Physics, University of Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany;

    Department of Chemistry, University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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