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Detection of Similar Elastic Properties Using a Magnetic Force Controlled Afm

Published online by Cambridge University Press:  15 February 2011

Shin-Ichi Yamamoto ,
Hirofumi Yamada ,
Suzanne P. Jarvis ,
Makoto Motomatsu  and
Hiroshi Tokumoto
Shin-Ichi Yamamoto
Affiliation:
Joint Research Center for Atom Technology (JRCAT), Angstrom Technology Partnership (ATP), 1–1–4 Higashi, Tsukuba, Ibaraki 305, Japan
Hirofumi Yamada
Affiliation:
JRCAT, National Institute for Advanced Innterdisciplinary Research (NAIR), 1–1–4 Higashi, Tsukuba, Ibaraki 305, Japan
Suzanne P. Jarvis
Affiliation:
Joint Research Center for Atom Technology (JRCAT), Angstrom Technology Partnership (ATP), 1–1–4 Higashi, Tsukuba, Ibaraki 305, Japan
Makoto Motomatsu
Affiliation:
Joint Research Center for Atom Technology (JRCAT), Angstrom Technology Partnership (ATP), 1–1–4 Higashi, Tsukuba, Ibaraki 305, Japan
Hiroshi Tokumoto
Affiliation:
Joint Research Center for Atom Technology (JRCAT), Angstrom Technology Partnership (ATP), 1–1–4 Higashi, Tsukuba, Ibaraki 305, Japan
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Abstract

We have investigated regional variations of elastic properties using a magnetic force controlled AFM. A piece of small magnet was fixed at the end of the backside of the AFM cantilever so as to apply forces directly to the tip through the external magnetic field of an electromagnet. By modulating the applied forces to the tip and measuring the resulting amplitude of oscillation, a sensitive measurement of the local contact stiffness can be made. We have applied this technique to phase-separated films of polystyrene/polymethylmethacrylate (PS-PMMA) which have almost identical Young's moduli.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 436: Symposium CC – Thin Films Stresses and Mechanical Properties VI , 1996 , 385
Copyright
Copyright © Materials Research Society 1997

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