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04/21/2010

Caltech Researchers Create "Sound Bullets"

Kathy Svitil

Taking inspiration from a popular executive toy ("Newton's cradle"), researchers at Caltech have built a device—called a nonlinear acoustic lens—that produces highly focused, high-amplitude acoustic signals dubbed "sound bullets." The acoustic lens and its sound bullets (which can exist in fluids—like air and water—as well as in solids) have the potential to revolutionize applications from medical imaging and therapy to the nondestructive evaluation of materials and engineering systems.

04/16/2010

Astronomical Society of the Pacific Honors Caltech Achievements

Heidi Aspaturian

A constellation of Caltechers has been honored this week by the Astronomical Society of the Pacific, the world's largest general astronomy society. The ASP announced eight 2010 awards for "excellence in astronomy research and education," four of them recognizing people and programs affiliated with the Caltech community.

03/24/2010

The Light and Sound Fantastic

Douglas Smith

Producing coherent light on a microchip is old hat—LED lasers underpin our high-tech world, appearing in gadgets ranging from DVD players and supermarket checkout scanners to digital data lines. A new chip-compatible component developed at Caltech can produce coherent sound as well, and even interconvert the two. Who knows where this marriage of sound and light might lead?

02/24/2010

Caltech Receives More than $33 Million from American Recovery and Reinvestment Act

Jon Weiner

Research in genomic sciences, astronomy, seismology, and neuroeconomics are some of the many projects being funded at the California Institute of Technology (Caltech) by the American Recovery and Reinvestment Act (ARRA).

02/03/2010

Caltech Physicist Named National Security Science and Engineering Faculty Fellow

Jon Weiner

Caltech's H. Jeff Kimble named National Security Science and Engineering Faculty Fellow.

01/23/2010

Caltech Mourns the Passing of Andrew Lange

Jon Weiner

Physicist Andrew Lange passes away at the age of 52.

01/13/2010

Caltech Astronomer Spots Second Smallest Exoplanet

Kathy Svitil

Astronomers from Caltech and other institutions, using the highly sensitive 10-meter Keck I telescope atop Hawaii's Mauna Kea, have detected an extrasolar planet with a mass just four times that of Earth. The planet, which orbits its parent star HD156668 about once every four days, is the second-smallest world among the more than 400 exoplanets (planets located outside our solar system) that have been found to date.

12/21/2009

Caltech Physicists Propose Quantum Entanglement for Motion of Microscopic Objects

Kathy Svitil

Researchers at the Caltech have proposed a new paradigm that should allow scientists to observe quantum behavior in small mechanical systems. Their ideas, described in the early online issue of the Proceedings of the National Academy of Sciences, offer a new means of addressing one of the most fascinating issues in quantum mechanics: the nature of quantum superposition and entanglement in progressively larger and more complex systems.

12/17/2009

Caltech Scientists Discover Fog on Titan

Kathy Svitil

Saturn's largest moon, Titan, looks to be the only place in the solar system—aside from our home planet, Earth—with copious quantities of liquid (largely, liquid methane and ethane) sitting on its surface. According to Caltech planetary astronomer Mike Brown, Earth and Titan share yet another feature, which is inextricably linked with that surface liquid: common fog.

12/16/2009

Caltech Scientists Film Photons with Electrons

Kathy Svitil

Techniques recently invented by researchers at the California Institute of Technology (Caltech)—which allow the real-time, real-space visualization of fleeting changes in the structure of nanoscale matter—have been used to image the evanescent electrical fields produced by the interaction of electrons and photons, and to track changes in atomic-scale structures.

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