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发帖数: 6472 | 1 Contact Info:
Thomas E. Beechem III
Senior Member of the Technical Staff
Nanomaterials Sciences Department
Email: t*****[email protected]
Phone: (505) 284-3503
Position Opening:
Postdoctoral Appointee – Raman Spectroscopy for Thermal Property Characteri
zation
Description:
The thermal response of a system now increasingly defines the total performa
nce of applications on the whole. As a consequence, the material properties
defining this thermal response must be accurately known and quantified in so
me manner. Such quantification, however, can be compromised as the materials
and solutions to be examined are themselves of a size and morphology such t
hat traditional means of measurement are obsolete. This obsolescence occurs
as traditional probes often have a thermal mass on the same order as that be
ing interrogated. Therefore, a probe capable of examining the micro and nano
systems at the heart of modern thermal solutions must be developed.
Raman spectroscopy offers this solution due to its small spatial resolution
(~500 nm), material specificity, and most importantly the fact that the tech
nique is non-contact and thus intrinsically less invasive than the vast majo
rity of thermal probes. Yet to date, thermal applications of Raman have focu
sed nearly exclusively on only the measurement of temperature. As the basis
for thermal property measurement is the acquisition of temperature, the tech
nique is then an obvious candidate to measure more basic attributes. In resp
onse, we seek a post-doctoral appointee to conduct experimental research rel
ated to development and advancement of Raman spectroscopic techniques using
both continuous-wave and pulsed laser systems to measure fundamental thermal
properties including thermal conductivity, specific heat, and thermal bound
ary conductance. The candidate will work closely with Sandia’s micro/nanosc
ale heat transfer interdisciplinary teams and will be responsible for develo
ping new characterization techniques for studying new material systems and e
xtending the knowledge-base in the physics of thermal transport in small-sca
le structures.
Requirements:
1. Ph.D. in engineering, physics, materials science or a related discipline.
2. Experience in the theory, set-up, and operation of CW and pulsed laser sy
stems.
3. Knowledge of basic heat transfer analysis.
4. Good communication skills and a robust technical background as evidenced
by publication in peer-reviewed journals
5. Extensive hands-on laboratory experience and capable of independent and s
afe laboratory practices.
6. Ability to obtain and maintain a DOE clearance.
Desired:
1. Knowledge of Raman spectroscopy or other spectroscopic techniques for sol
id state material characterization.
2. Experience with theory and experiments in micro- and nanoscale heat trans
fer.
3. Strong leadership skills and experience working in a collaborative enviro
nment within a multidisciplinary team. |
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