Sensitive Detection of Local Elasticity by Oscillating an AFM Cantilever with its Mass Concentrated(NDE3)

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概要

• 論文の詳細を見る

• In dynamic atomic force microscopy (AFM) for detecting local elastic properties of samples, it is desirable that the contact resonance of an AFM cantilever is sensitive to tip-sample contact stiffiiess. This paper presents a unique cantilever with its mass concentrated as a way of enhancing the sensitivity. The cantilever is made up of a commercially available normal cantilever and a tungsten particle adhesively attached to the free end. Spectra of the contact vibrations are measured for three sample materials. The mass-concentrating cantilever whose tip is in contact with a sample exhibits a distinguishing spectrum containing several resonant peaks. A meaningful resonant peak affected significantly by contact stiffness can be found out among them because the other trivial peaks coincide with those for the cantilever free from a sample. The experiments and the elemental beam theory prove that the attachment of a concentrated mass provides an enhanced sensitivity, even for stiff materials, when such a meaningful peak focused on. If the attached mass is about four times larger than the distributed (cantilever) mass, the resonant peak obeys a spring-mass model. This means that the cantilever with its mass concentrated can provide the maximum sensitivity.

• 一般社団法人日本機械学会の論文
• 2001-10-20

著者

• Muraoka Mikio

  Department Of Mechanical Engineering Akita University

関連論文

• A Method of Evaluating Local Elasticity and Adhesion Energy from the Nonlinear Response of AFM Cantilever Vibrations
• Sensitive Detection of Local Elasticity by Oscillating an AFM Cantilever with Its Mass Concentrated(Special Issue on strength and Fracture, and Experimental Mechanics)
• Sensitive Detection of Local Elasticity by Oscillating an AFM Cantilever with its Mass Concentrated(NDE3)

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