ICT2005 Best Papers and other Highlights

Two Best Paper Awards were made at ICT2005. The “Best Scientific Paper Award” went to Ken Kurosaki of Osaka University (Japan) for and the “Best Applications Paper Award” went to Richard Welle of Aerospace Corp. (US).

Here are some details on these two papers:
Two Best Paper Awards were made at ICT2005. The “Best Scientific Paper Award” went to Ken Kurosaki of Osaka University (Japan) for and the “Best Applications Paper Award” went to Richard Welle of Aerospace Corp. (US).

Here are some details on these two papers:


Kurosaki, K., H. Muta, et al. (2005). Thermoelectric Properties of Ternary Silver Thallium Tellurides. Proceedings of the 24th International Conference on Thermoelectrics: ICT2005, Clemson, SC USA p.(4).
email: kurosaki@nucl.eng.osaka-u.ac.jp

Abstract:
Thallium compounds have been a focus of attention as new thermoelectric materials because they have very low thermal conductivities. For instance, the thermoelectric properties of some thallium compounds, such as Tl2SnTe5, Tl9BiTe6, and thallium filled skutterudites (Tl0.22Co4Sb12) have been reported. The maximum ZT values of these thallium compounds are ZT= 0.6 at 300 K for Tl2SnTe5 , and ZT=0.8 at 800 K for Tl0.22Co4Sb12 .

In this paper, we report on the properties of four silver thallium tellurides selected for study as novel thermoelectric materials. One of these compounds seems to have a thermoelectric figure of merit comparable to those of state-of-the-art materials.

[1] J.W. Sharp, B.C. Sales, D.G. Mandrus and B.C. Chakoumakos: Appl. Phys. Lett. 74 (1999) 3794-3796.
[2] B. Wolfing, C. Kloc, J. Teubner and E. Bucher: Phys. Rev. Lett. 86 (2001) 4350-4353.
[3] B.C. Sales, B.C. Chakoumakos and D.G. Mandrus: Phys. Rev. B 61 (2000) 2475-2481.
[4] K. Kurosaki, H. Uneda, H. Muta, and S. Yamanaka, JALCOM, in press.

Kurosaki’s paper may be downloaded through the ZTbib database
ZTbib database or the paper may be accessed directly using this link:
Kurosaki ICT2005 Best Scientific Paper (*.pdf)

The author (Kurosaki) would also like to bring your attention to the following related paper:

Kurosaki, K., A. Kosuga, et al. (2005). “Ag[sub 9]TlTe[sub 5]: A high-performance thermoelectric bulk material with extremely low thermal conductivity.” Applied Physics Letters 87(6): 061919.



And the Best Applications Award went to Richard Welle of The Aerospace Corporation (USA) for:

Welle, R. P. and B. S. Hardy (2005). Peltier-Actuated Microvalve Performance Optimization. Proceedings of the 24th International Conference on Thermoelectrics:, ICT2004, Clemson, SC USA p.(4).
email: welle@aero.org

Abstract:
Valves for microfluidic systems have, for various reasons, proven to be difficult to fabricate, cumbersome to operate, and/or unreliable. We have explored the performance of a novel microfluidic valve formed by creating a flow channel past a Peltier junction. Using the Peltier junction as a thermoelectric cooler causes the fluid in the valve to freeze, forming a plug that blocks flow through the valve. This type of valve is fundamentally leak-free, has no moving parts, and is electrically actuated. We have fabricated several experimental prototypes and evaluated their performance. We find that they are reliably capable of closing in less than 100 ms, and of opening substantially faster.

Welle’s paper may be downloaded through the ZTbib database
ZTbib database or the paper may be accessed directly using this link:
Welle ICT2005 Best Application Paper (*.pdf)

Each winner received a certificate and US$500 during the conference banquet in recognition of their outstanding work.