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使用小波变换研究石墨上的尖端-样品相互作用。

Tip-sample interactions on graphite studied using the wavelet transform.

机构信息

Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, I-25121 Brescia, Italy.

出版信息

Beilstein J Nanotechnol. 2010;1:172-81. doi: 10.3762/bjnano.1.21. Epub 2010 Dec 22.

DOI:10.3762/bjnano.1.21
PMID:21977408
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3045927/
Abstract

Wavelet transform analysis is applied to a thermally excited cantilever to get insights into fundamental thermodynamical properties of its motion. The shortcomings of the widely used Fourier analysis are briefly discussed to put into perspective the wavelet transform analysis, used to describe the temporal evolution of the spectral content of the thermal oscillations of a cantilever with an interacting tip. This analysis allows to retrieve the force gradients, the forces and the Hamaker constant in a measurement time of less than 40 ms.

摘要

小波变换分析应用于热激励悬臂梁，以深入了解其运动的基本热力学性质。简要讨论了广泛使用的傅里叶分析的缺点，以便将小波变换分析置于适当的位置，用于描述具有相互作用尖端的悬臂热振动的频谱内容随时间的演化。这种分析方法可以在不到 40ms 的测量时间内恢复力梯度、力和哈默常数。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/a3d6f6916e1a/Beilstein_J_Nanotechnol-01-172-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/7d0c28b66952/Beilstein_J_Nanotechnol-01-172-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/890c0e465696/Beilstein_J_Nanotechnol-01-172-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/5a12cc56c3f3/Beilstein_J_Nanotechnol-01-172-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/c9036b10df1d/Beilstein_J_Nanotechnol-01-172-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/b8313c45f51e/Beilstein_J_Nanotechnol-01-172-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/92ee9fd9c092/Beilstein_J_Nanotechnol-01-172-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/6d63d7a647ad/Beilstein_J_Nanotechnol-01-172-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/a3d6f6916e1a/Beilstein_J_Nanotechnol-01-172-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/7d0c28b66952/Beilstein_J_Nanotechnol-01-172-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/890c0e465696/Beilstein_J_Nanotechnol-01-172-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/5a12cc56c3f3/Beilstein_J_Nanotechnol-01-172-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/c9036b10df1d/Beilstein_J_Nanotechnol-01-172-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/b8313c45f51e/Beilstein_J_Nanotechnol-01-172-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/92ee9fd9c092/Beilstein_J_Nanotechnol-01-172-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/6d63d7a647ad/Beilstein_J_Nanotechnol-01-172-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea5b/3045927/a3d6f6916e1a/Beilstein_J_Nanotechnol-01-172-g009.jpg

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