Science and Technology
Caltech Scientists Invent New, Ultrathin Optical Devices That Shape Light in Exotic Ways

Schematic drawing of generation and focusing of radially polarized light by a metasurface. Credit: Dr. Amir Arbabi/Faraon Lab/Caltech Caltech engineers have created flat devices capable of manipulating light in ways that are very difficult or impossible to achieve with conventional optical components. The new devices are not made of glass, but rather of silicon nanopillars that are precisely arranged into a honeycomb pattern to create…

Caltech Chemists Solve Major Piece of Cellular Mystery

Credit: Lance Hayashida/Caltech and the Hoelz Laboratory/Caltech Not just anything is allowed to enter the nucleus, the heart of eukaryotic cells where, among other things, genetic information is stored. A double membrane, called the nuclear…

JPL Oceanographer Watches Seas Rise Around the World from Pasadena Post

  From the offices of the Jet Propulsion Laboratory in Pasadena, NASA scientists are using satellites to watch how quickly sea level is rising because of an accelerated phase of ice melting from glaciers on…

Seeing Quantum Motion

Credit: Chan Lei and Keith Schwab/Caltech Consider the pendulum of a grandfather clock. If you forget to wind it, you will eventually find the pendulum at rest, unmoving. However, this simple observation is only valid…

JPL Spacecraft Sees Ice on Mars Exposed by Meteor Impacts

The High Resolution Imaging Science Experiment camera on NASA's Mars Reconnaissance Orbiter took these images of a fresh, 6-meter-wide (20-foot-wide) crater on Mars on Oct. 18, 2008, (left) and on Jan. 14, 2009. Each image…

JPL’s Miniature 3-D Camera Offers Brain Surgery Innovation

A laboratory prototype of MARVEL, one of the world's smallest 3-D cameras. MARVEL is in the center foreground. On the display is a 3-D image…

Artificial Leaf Harnesses Sunlight for Efficient Fuel Production at Caltech Joint Research Center

(From left to right): Chengxiang Xiang and Erik Verlage assemble a monolithically integrated III-V device, protected by a TiO2 stabilization layer, which performs unassisted solar…

Physicist Charles A. Barnes Dies

Credit: Bob Paz Charles A. Barnes, professor of physics, emeritus, at Caltech and an expert in the study of both the weak nuclear force—one of…

JPL’s Dawn Sends Sharper Scenes from Ceres, Including Mysterious Bright Spots

NASA's Dawn spacecraft spotted this tall, conical mountain on Ceres from a distance of 915 miles (1,470 kilometers). The mountain, located in the southern hemisphere,…

Guidance Software Teams with Caltech Data Scientists to Research How to Thwart Hackers

Guidance Software, Inc. (NASDAQ: GUID), maker of EnCase®, software for digital investigations and endpoint data security, today announced it has funded a program at Caltech to support data security research using advanced anomaly science. Discoveries will be published and used by Caltech and Guidance Software to enhance data breach detection and incident response capabilities. “Hackers are relentless. Breaches of major corporate or government data centers are on the rise to the tune of billions of dollars in losses per year,” said Michael Harris, Chief Marketing Officer of Guidance Software. “Our industry is facing a massive labor shortage of cybersecurity specialists. To…

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