Elastic and viscoelastic characterization of inhomogeneous polymers by bimodal atomic force microscopy
Description
<jats:title>Abstract</jats:title> <jats:p>The elastic and viscoelastic responses of inhomogeneous polymers upon interacting with an atomic force microscopy (AFM) probe are simultaneously characterized by a bimodal AFM approach namely the amplitude- and frequency-modulation (AM–FM) method. In this approach, the AFM probe is operated in the AM mode at the first flexural frequency and in the FM mode at a higher flexural frequency. The AM mode provides information about the viscoelasticity of polymers in terms of the mechanical loss tangent, whereas the modulus of polymers is obtained as a function of the frequency shift of flexural frequencies in both modes. For a glassy polymer blend, the AM–FM method provides a consistent result in both the elastic modulus and loss tangent in comparison with those obtained by other methods. Moreover, a significant improvement of the contrast and lateral resolution in the AM–FM modulus image can be observed. However, the current approach shows a substantial increase in the modulus of rubbery polymers.</jats:p>
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 55 (8S1), 08NB06-, 2016-07-01
IOP Publishing
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Details 詳細情報について
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- CRID
- 1360003449890708864
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- NII Article ID
- 210000146973
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- ISSN
- 13474065
- 00214922
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- Data Source
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- Crossref
- CiNii Articles
- OpenAIRE