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自由悬臂梁在带激励下的小波互相关和相位分析。

Wavelet cross-correlation and phase analysis of a free cantilever subjected to band excitation.

机构信息

Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, I-25121 Brescia.

出版信息

Beilstein J Nanotechnol. 2012;3:294-300. doi: 10.3762/bjnano.3.33. Epub 2012 Mar 29.

DOI:10.3762/bjnano.3.33
PMID:22497003
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3323919/
Abstract

This work introduces the concept of time-frequency map of the phase difference between the cantilever response signal and the driving signal, calculated with a wavelet cross-correlation technique. The wavelet cross-correlation quantifies the common power and the relative phase between the response of the cantilever and the exciting driver, yielding "instantaneous" information on the driver-response phase delay as a function of frequency. These concepts are introduced through the calculation of the response of a free cantilever subjected to continuous and impulsive excitation over a frequency band.

摘要

这项工作介绍了通过小波互相关技术计算悬臂梁响应信号与驱动信号之间相位差的时频图的概念。小波互相关量化了悬臂梁响应与激励驱动器之间的公共功率和相对相位，从而提供了作为频率函数的驱动器-响应相位延迟的“即时”信息。这些概念是通过计算在频带内连续和脉冲激励下自由悬臂的响应来引入的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/1b9e5dde682d/Beilstein_J_Nanotechnol-03-294-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/08254d37e947/Beilstein_J_Nanotechnol-03-294-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/bd0fae9a4042/Beilstein_J_Nanotechnol-03-294-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/4b0452e8ba86/Beilstein_J_Nanotechnol-03-294-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/68f02397d4c2/Beilstein_J_Nanotechnol-03-294-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/1aa72d5051f9/Beilstein_J_Nanotechnol-03-294-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/2bcd5a0502ed/Beilstein_J_Nanotechnol-03-294-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/1b9e5dde682d/Beilstein_J_Nanotechnol-03-294-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/08254d37e947/Beilstein_J_Nanotechnol-03-294-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/bd0fae9a4042/Beilstein_J_Nanotechnol-03-294-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/4b0452e8ba86/Beilstein_J_Nanotechnol-03-294-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/68f02397d4c2/Beilstein_J_Nanotechnol-03-294-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/1aa72d5051f9/Beilstein_J_Nanotechnol-03-294-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/2bcd5a0502ed/Beilstein_J_Nanotechnol-03-294-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a0/3323919/1b9e5dde682d/Beilstein_J_Nanotechnol-03-294-g008.jpg

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Wavelet transforms to probe long- and short-range forces by thermally excited dynamic force spectroscopy.
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