Research News

04/18/2014 10:47:54
Cynthia Eller
Number theorists are particularly interested in prime numbers (those integers that cannot be divided by any number other than itself and 1) and Diophantine equations. Diophantine equations are polynomial equations (those with two or more variables) in which the coefficients are all integers. It is these equations that are the inspiration for a recent proof offered by Dinakar Ramakrishnan, Caltech's Taussky-Todd-Lonergan Professor of Mathematics and executive officer for mathematics, and his coauthor, Mladen Dimitrov, formerly an Olga Taussky and John Todd Instructor in Mathematics at Caltech and now professor of mathematics at the University of Lille in France. What Ramakrishnan and Dimitrov showed is that a specific collection of systems of homogeneous equations with six variables has only a finite number of rational solutions (up to scaling).
03/10/2014 10:40:46
Jessica Stoller-Conrad
Imagine that you are in a meeting with coworkers or at a gathering of friends. You pull out your cell phone to show a presentation or a video on YouTube. But you don't use the tiny screen; your phone projects a bright, clear image onto a wall or a big screen. Such a technology may be on its way, thanks to a new light-bending silicon chip.
An image of Hajimiri's light-bending silicon chip.
02/21/2014 18:26:11
Cynthia Eller
Erik Winfree, professor of computer science, computation and neutral systems, and bioengineering, explains, "I tend to think of cells as really small robots. Biology has programmed natural cells, but now engineers are starting to think about how we can program artificial cells."
02/24/2014 14:36:17
Jessica Stoller-Conrad
Researchers at Caltech and several other institutions have made the first detection of water in the atmosphere of a Jupiter-mass planet orbiting the nearby star tau Boötis.
02/19/2014 15:50:10
Jessica Stoller-Conrad

A new laser developed by a research group at Caltech holds the potential to increase by orders of magnitude the rate of data transmission in the optical-fiber network—the backbone of the Internet.

02/19/2014 15:05:39
Kimm Fesenmaier
For the first time, NuSTAR has mapped radioactive material from the core of a supernova explosion.
02/20/2014 09:28:00
Kimm Fesenmaier
Using a novel microfluidic technique, researchers at Caltech have shown that blood stem cells might be more actively involved in battles against infection. Rather than simply replenishing immune cells after they become depleted, new research shows that blood stem cells sense danger signals directly and quickly produce new immune cells.
02/11/2014 11:44:20
Cynthia Eller
The NOvA experiment, centered at Fermi National Accelerator Laboratory (Fermilab) near Chicago, has detected its first neutrinos.
02/10/2014 16:51:55
Cynthia Eller

Methane, a key greenhouse gas, has more than doubled in volume in Earth's atmosphere since 1750. Its increase is believed to be a leading contributor to climate change.

02/09/2014 10:05:05
Kimm Fesenmaier
"The method that we developed has now been validated in the most natural possible setting in a mouse," says David Baltimore, president emeritus and the Robert Andrews Millikan Professor of Biology at Caltech.
02/05/2014 09:00:07
Kimm Fesenmaier
Caltech researchers have, for the first time, pinpointed areas of the brain—the inferior lateral prefrontal cortex and frontopolar cortex—that seem to serve as an “arbitrator” between two decision-making systems, weighing the reliability of the predictions each makes and then allocating control accordingly.
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