Dislocation Physics Laboratory
Research Faculty
E. Nadgorny | Nadgorny Photo | Nadgorny Students
013 Fisher Hall, 906.487.3556
The Dislocation Physics Laboratory conducts
studies regarding the influences of dislocations on physical properties
of solids as a part of the Materials/ LaserPhysics research area in the Department
of Physics.
The Laboratory focuses primarily on three research areas:
The Laboratory is equipped with several special facilities:
- Pulse Loading Systems apply stresses to move dislocations in samples
of different materials. The systems can operate over a wide range of
stresses, pulse durations and temperatures to
measure the dislocation velocities in various materials under investigation.
A quartz annealing system equipped with an inert gas supply, high-temperature
furnace, and programmed controller can reduce, if necessary, the density
of dislocations, homogenize samples and/or stabilize their point defects.
The individual dislocations are revealed by selective etching and observed
by either an optical microscope with a PC-controlled digital camera, or an
interferometric microscope, a scanning electron microscope, or an atomic
force microscope.
- The Reference
Cell is a radio-frequency plasma discharge with a magnetically
coupled sample manipulator. The Reference Cell, one of only several
of this kind in the country, was specially designed for studying
both the plasma properties and plasma etching of materials with different
dislocation structures.
Several computer-controlled electronic systems and lasers allow measuring
simultaneously properties of both plasmas and materials during etching.
- The facility is also used in collaboration with other Laboratories
of the Department of Physics, such as the Atomic and Molecular Laser
Spectroscopy Laboratory (Dr.
J. Borysow).
|
