| 摘要 |
A measurement apparatus 100 comprises force application means 160 for applying a known force to a sample material, and velocity determining means for determining a velocity of a portion of the sample material using a Doppler-shift optical coherence tomography technique. The force application means is a rheometer 160 and the velocity determining means is an interferometer (Michelson or mach-zender). The velocity of a portion of the sample is determined when force is applied thereto. The invention also comprises a kit to provide a rheometer with a transparent sample window and Doppler shift optical coherence tomography apparatus to determine sample velocity.
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