Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2167813
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The mechanical properties of high-quality suspended GaN microstructures fabricated by GaN-on-patterned-silicon technique are characterized. Micro-Raman scattering is used to study the stress distribution in the GaN microstructures, and the measured results show that the stress in GaN microbeams decreases 47% when the silicon underneath the microbeams is removed. Microbeam bending test is used to measure the Young's modulus of GaN films grown on silicon (111) substrate, yielding a Young's modulus of 330 GPa. (c) 2006 American Institute of Physics.
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