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In this research
project, an undergraduate student will learn the role of high pressure
in modifying material properties using a diamond anvil cell. The
student will be able to use the latest designer diamond technology
developed by physicists at UAB and at Lawrence Livermore National
Laboratory. The designer diamond anvils have built in sensors that
allow measurements of electrical resistance of the sample at high
pressures. REU student will learn assembly, alignment, and
sample preparation of a diamond anvil cell. The sample studied would
be Gallium Arsenide that shows a semiconductor to metal transition
at 16 GPa. Our experience is that this transition can be reproduced
very well and is simple to comprehend for an undergraduate student.
In the last three years, REU students Timothy Banks, Joseph Tarwoe,
and Philemon Spencer have worked on similar projects and published
results in top journals like Physical Review Letters [1] and Applied
Physics Letters [2].
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