News articles tagged with "materials_science"

12/15/2014 09:46:33
Douglas Smith
Integrating optics and electronics into systems such as fiber-optic data links has revolutionized how we transmit information. A second revolution awaits as researchers seek to develop chips in which individual atoms control the movement of light within the chip through optical "wires," and photons could replace electrons as the vehicle for performing computations. Andrei Faraon (BS '04), an assistant professor of applied physics and materials science in the Division of Engineering and Applied Science, presents a preview of this revolution at 8 p.m. on Wednesday, December 17, in Caltech's Beckman Auditorium. Admission is free.
An optical bench in the Faraon lab.
01/12/2011 00:00:00
Lori Oliwenstein

A Caltech-led team has created a palladium-based metallic glass that has a combination of strength and toughness at a level not previously been seen in any other material. The study demonstrates for the first time that the metallic glasses have the capacity to become the toughest and strongest materials ever known, the researchers say. 

10/11/2010 07:00:00
Michael Rogers

An encounter with summer smog in Yosemite National Park led Caltech graduate student and accomplished nature photographer William Chueh to take action through science. His resulting research could help reduce the planet's dependence on fossil fuels, not to mention clean the air over Yosemite.

09/22/2010 23:00:00
Marcus Woo

Computers, light bulbs, and even people generate heat—energy that ends up being wasted. Thermoelectric devices, which convert heat to electricity and vice versa, harness that energy. But they're not efficient enough for widespread commercial use or are made from expensive or environmentally harmful rare materials.

Now, Caltech researchers have developed a new type of material—a nanomesh, composed of a thin film with a grid-like arrangement of tiny holes—that could lead to efficient thermoelectric devices.

07/21/2010 23:00:00
Jon Weiner

As part of a broad effort to achieve breakthrough innovations in energy production, U.S. Deputy Secretary of Energy Daniel Poneman announced an award of up to $122 million over five years to a multidisciplinary team of top scientists, led by Caltech, to establish an Energy Innovation Hub aimed at developing revolutionary methods to generate fuels directly from sunlight.  

04/22/2010 07:00:00

A group of scientists led by researchers from Caltech has engineered a type of artificial optical material—a metamaterial—with a particular three-dimensional structure such that light exhibits a negative index of refraction upon entering the material. In other words, this material bends light in the "wrong" direction from what normally would be expected, irrespective of the angle of the approaching light.

03/16/2010 22:00:00
Heidi Aspaturian

These boots are made for walking . . . and for powering up your cell phone? It could happen, say a team of Princeton and Caltech scientists. In a recent paper in the journal Nano Letters, they report that they have developed an innovative rubber chip that has the ability to harvest energy from motions such as walking, running, and breathing and convert it into a power source. 


02/16/2010 08:00:00
Lori Oliwenstein

Using arrays of long, thin silicon wires embedded in a polymer substrate, a team of scientists from the California Institute of Technology (Caltech) has created a new type of flexible solar cell that enhances the absorption of sunlight and efficiently converts its photons into electrons. The solar cell does all this using only a fraction of the expensive semiconductor materials required by conventional solar cells. 

02/09/2010 08:00:00
Kathy Svitil

Caltech researchers have developed a way to make some notoriously brittle materials ductile—yet stronger than ever—simply by reducing their size. The work could eventually lead to innovative, superstrong, yet light and damage-tolerant materials. These materials could be used as components in structural applications, such as in lightweight aerospace vehicles that last longer under extreme environmental conditions and in naval vessels that are resistant to corrosion and wear.

11/11/2009 08:00:00
Lori Oliwenstein

The California Institute of Technology (Caltech) and the Dow Chemical Company today announced a new solar-research collaboration aimed at developing the use of semiconductor materials that are less expensive and more abundant than those used in many of today's solar cells. In addition, they announced the creation of the Dow Chemical Company Graduate Fellowship in Chemical Sciences and Engineering.

11/09/2009 08:00:00
Kathy Svitil

In work that someday may lead to the development of novel types of nanoscale electronic devices, an interdisciplinary team of researchers at the California Institute of Technology (Caltech) has combined DNA's talent for self-assembly with the remarkable electronic properties of carbon nanotubes, thereby suggesting a solution to the long-standing problem of organizing carbon nanotubes into nanoscale electronic circuits.

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