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April 15-16, 2019 | Frankfurt, Germany
Applied Physics & Laser, Optics and Photonics
International Conference on
Materials Science and Nanotechnology | Volume: 3
Some critical problems of the physical design and performance of electronic and
optical materials, assemblies and systems: Application of analytical modelling
Ephraim Suhir
Portland State University, USA
S
ome critical problems of the mechanical
behavior and performance of electronic
and optical materials, assemblies and systems
are addressed and discussed. It is shown that
application of analytical modeling (always
confirmed by finite-element-analyses) enables
to reveal and explain the underlying physics
associated with such, often non-obvious, always
non-trivial and sometime even paradoxical,
problems. Some of the addressed problems
are: interfacial thermal stresses in adhesively
bonded or soldered assemblies and application of
inhomogeneous attachments for lower thermal
stresses; thermal and lattice mismatch stresses in
semiconductor crystal grown assemblies; dynamic
response of electronic systems to shocks and
vibrations;stressreliefinsolderjointsowingtotheir
elevated stand-off heights; using inhomogeneous
solder joint systems for lower thermal stresses;
thermal stress in flexible electronics; incentive
for mechanical pre-stressing of accelerated test
specimens subjected to thermal loading; stress
relief in thermoelectric module designs using
thinner and longer legs; low-temperature micro-
bending of long-haul dual-coated optical fibers;
two-point bending of optical fiber specimens.
It is concluded that while all the three basic
approaches in microelectronics and photonics
materials science and engineering - analytical
(mathematical) modeling, numerical modeling
(simulation) and experimental investigations - are
equally important in understanding the physics of
the materials behavior and in designing, on this
basis, viable and reliable electronic devices and
products, analytical modeling occupies a special
place owing to its ability to provide clear and
concise information of the problems it addresses.
e
:
suhire@aol.com