Physics tip sheet #9 April 17, 2002

J. Reichert, R. Ochs, D. Beckmann, H. B. Weber, M. Mayor, and H. v. Lhneysen
Physical Review Focus/Physical Review Letters (Print issue: April 29, 2002)

A German team have shown that an asymmetrically shaped molecule conducts electricity differently depending on which direction the current flows. The experiment marks a step toward controlling single-molecule conductivity by designing the molecule.

Physical Review Focus: http://focus.aps.org/v9/st18.html
Journal article: http://link.aps.org/abstract/PRL/v88/e176804

4) Ultrahigh energy neutrinos (Three papers)
Kusenko and Weiler; Feng, Fisher, Wilczek, and Yu; Fodor, Katz, and Ringwald
Physics News Update/Physical Review Letters (Prints issues: April 22/29, 2002)

Ultrahigh-energy neutrinos might be made in a variety of ways (in the warped space near black holes, say, or in the decay of exotic massive particles) and might be detected on Earth in a variety of ways. This issue is explored in three upcoming articles in Physical Review Letters.

Physics News Update: http://www.aip.org/enews/physnews/2002/split/585-2.html
Journal article: http://link.aps.org/abstract/PRL/v88/e161101
Journal article: http://link.aps.org/abstract/PRL/v88/e161102
Journal article: http://link.aps.org/abstract/PRL/v88/e171101

5) Infant respiratory disease
J. Ding, H. E. Warriner, and J. A. Zasadzinski
Physics News Update/Physical Review Letters (Print issue: April 22, 2002)

An in-vitro study of the surfactant lining infants lungs shows that the balance of liquid to crystal components is vital

Contact: David Harris
American Physical Society

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