Spatially resolved quantitative mapping of thermomechanical properties and phase transition temperatures using scanning probe microscopy
An approach for the thermomechanical characterization of phase transitions in polymeric materials (polyethyleneterephthalate) by band excitation acoustic force microscopy is developed. This methodology allows the independent measurement of resonance frequency, Q factor, and oscillation amplitude of a tip-surface contact area as a function of tip temperature, from which the thermal evolution of tip-surface spring constant and mechanical dissipation can be extracted. A heating protocol maintained a constant tip-surface contact area and constant contact force, thereby allowing for reproducible measurements and quantitative extraction of material properties including temperature dependence of indentation-based elastic and loss moduli.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Number(s):
- 8,484,759
- Application Number:
- 12/857,894
- OSTI ID:
- 1087897
- Country of Publication:
- United States
- Language:
- English
Quantitative Calorimetry Signal for Sub-Micron Scale Thermal Analysis
|
patent-application | November 2007 |
Method and apparatus for performing localized thermal analysis and sub-surface imaging by scanning thermal microscopy
|
patent | August 2000 |
Similar Records
Application of scanning probe microscopy nano-indentation towards nanomechanical characterization of polymer films
Simultaneous Elastic and Electromechanical Imaging by Scanning Probe Microscopy: Theory and Applications to Ferroelectric and Biological Materials