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Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems
Published on: June 23, 2023
Subsurface imaging of soft polymeric materials with nanoscale resolution
Eike-Christian Spitzner1, Christian Riesch, Robert Magerle
1Chemische Physik, Technische Universität Chemnitz, D-09107 Chemnitz, Germany. eike-christian.spitzner@physik.tu-chemnitz.de
ACS Nano
|December 23, 2010
Summary
This study introduces a new atomic force microscopy method for nondestructive, depth-resolved imaging of thin polymer surface layers. The technique reveals subsurface structures invisible to conventional methods.
Area of Science:
- Materials Science
- Surface Science
- Nanotechnology
Background:
- Conventional atomic force microscopy (AFM) methods often lack depth resolution for thin surface layers.
- Understanding subsurface structures in soft polymeric materials is crucial for material characterization.
Purpose of the Study:
- To demonstrate a novel nondestructive depth-resolved imaging technique for soft polymeric materials.
- To reveal subsurface structures not discernible by conventional amplitude modulation atomic force microscopy (AM-AFM).
Main Methods:
- Utilizing amplitude modulation atomic force microscopy (AM-AFM) for imaging.
- Analyzing amplitude-phase-distance curves to determine tip indentation.
- Using tip indentation as a depth coordinate for image reconstruction.
Main Results:
- Successfully achieved nondestructive depth-resolved imaging of approximately 20-nm-thick polymer surface layers.
- Reconstructed cross sections and volume images of the specimen's mechanical properties.
- Identified subsurface structures that were not visible with standard AM-AFM.
Conclusions:
- The developed AM-AFM approach enables detailed subsurface analysis of soft polymers.
- This technique significantly enhances the capability of AFM for characterizing thin film materials.
- Results were validated on block copolymer and semicrystalline polymer surfaces.
