Local dynamic mechanical analysis

Area of Science:

• Materials Science and Engineering
• Nanotechnology
• Mechanical Engineering

Background:

• The development of novel materials necessitates advanced characterization techniques.
• Analyzing thin films on substrates is challenging due to substrate influence.
• Existing characterization systems lack direct comparison capabilities for modulation modes.

Purpose of the Study:

• To design and build an integrated dynamical nanoindentation system for material characterization.
• To enable direct comparison between tip and sample modulation modes for quantitative mechanical measurements.
• To offer local mechanical spectroscopy and mechanical imaging capabilities.

Main Methods:

• Integration of a nanoindenter head with capacitive displacement sensing.
• Incorporation of a scanning probe microscope with XYZ scanning electronics.
• Addition of a transducer for sample actuation, enabling both tip and sample modulation.

Main Results:

• The developed Local-Dynamic Mechanical Analysis (L-DMA) setup successfully performed mechanical characterization.
• Experimental results for bulk and thin film materials (ceramics, polymers) validated the setup.
• Comparison between simulation data and experimental results in sample modulation mode showed good agreement.

Conclusions:

• The L-DMA system provides a versatile platform for accurate mechanical property assessment.
• The ability to compare tip and sample modulation modes enhances measurement consistency and reliability.
• The developed instrument is suitable for characterizing a range of materials, including thin films.