Since the mechanical properties of polymers are time dependent, full understanding of their characteristics requires collecting measurements over a range of frequencies and temperatures.
Where DMA is well suited for measurements on bulk samples, it is less adept at characterizing microscopic domains within heterogeneous polymer material. Established AFM methods have similarly limited appropriateness for use in such research processes, as they either provide property maps at discrete frequencies orders of magnitude higher than bulk measurements (e.g., TappingMode and contact resonance) — making comparisons difficult — or struggle with such intrinsic mechanical properties as loss tangent and storage modulus (e.g., force spectroscopy and PeakForce Tapping).
AFM-nDMA overcomes these hurdles.
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