Photon tunneling microscopy of polymeric surfaces

Area of Science:

• Surface science
• Optics
• Materials science

Background:

• Conventional microscopy techniques often require sample preparation like metallization or involve intrusive probes.
• Imaging dielectric and polymeric surfaces presents unique challenges due to their electronic properties.

Purpose of the Study:

• To introduce and demonstrate the capabilities of photon tunneling microscopy (PTM) for surface imaging.
• To showcase PTM's application in studying polymer behavior and film formation.

Main Methods:

• Utilizing photon tunneling microscopy, which leverages evanescent waves for imaging.
• Achieving high vertical (1 nm) and lateral (<λ/4) resolution.
• Conducting real-time imaging in ambient air without sample metallization or intrusive probes.

Main Results:

• Demonstrated PTM's ability to image polymeric and dielectric surfaces with high resolution.
• Successfully applied PTM to study polyethylene single crystals, latex film formation, and polystyrene dewetting.
• Showcased real-time observation of surface topography evolution.

Conclusions:

• Photon tunneling microscopy provides a non-invasive, high-resolution method for surface analysis.
• PTM is a versatile tool for investigating dynamic processes on dielectric and polymeric materials.
• The technique overcomes limitations of traditional microscopy for specific sample types and applications.