37 research outputs found
Responsiveness, minimal important difference, minimal relevant difference, and optimal number of patients for a study
Development of a Valid and Reliable Knee Articular Cartilage ConditionâSpecific Study Methodological Quality Score
Potential problems in the use of patient reported outcome measures (PROMs) and reporting of PROM data in sports science
High temperature surface Brillouin scattering study of mechanical properties of boron-doped epitaxial polysilicon
A study of the mechanical properties of a boron-doped epitaxial polysilicon layer
deposited on a Si (100) substrate specimen has been carried out by surface Brillouin scattering at high
temperatures. This type of specimen is widely used in micro-electro-mechanical
systems (MEMS). By
accumulating spectra with the Rayleigh mode and the Lamb continuum the isotropic elastic
constants C44 and C11 were obtained, from which the values of the
bulk, shear and Youngâs moduli and Poissonâs ratio for the layer were determined over a range
of temperatures from 20 °C to 110 °C. By contrast, an examination of the literature on
polycrystalline
silicon shows that
other methods each provide a limited range of the above properties and thus additional
experiments and techniques were needed. The SBS method is applicable to other polycrystalline materials such
as silicon
carbide, silicon
nitride, silicon
germanium and amorphous diamond that have also been used for MEMS applications