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Raising Temperature Changes an Element's Electronic "Topology"

10-27-16

Brent Fultz, Barbara and Stanley R. Rawn, Jr., Professor of Materials Science and Applied Physics, and colleagues have discovered a new way that heat tweaks the physical properties of a material. The potential value to engineers lies in the fact that it is much easier to raise the temperature of a material than it is to place it under the sort of pressure needed to force an electronic topological transition. [Caltech story]

Tags: APhMS research highlights Brent Fultz

Professor Chandrasekaran Wins INFORMS Optimization Society Prize

10-14-16

Venkat Chandrasekaran, Assistant Professor of Computing and Mathematical Sciences and Electrical Engineering, is a winner of the 2016 INFORMS Optimization Society Prize for Young Researchers for his paper Relative Entropy Relaxations for Signomial Optimization. The prize is awarded for an outstanding paper in optimization and serves as a recognition of promising colleagues who are at the beginning of their academic or industrial career. [List of winners]

Tags: EE honors CMS Venkat Chandrasekaran

Professor McKeon Elected APS Fellow

10-11-16

Beverley McKeon, Professor of Aeronautics and Associate Director of the Graduate Aerospace Laboratories, has been elected as a Fellow of the American Physical Society (APS) “for experimental and theoretical contributions to advancing the understanding of wall turbulence and for elegant interdisciplinary approaches to modeling and flow manipulation.” [APS Fellow Archive]

Tags: honors GALCIT Beverley McKeon fluid dynamics

Professor Atwater Elected APS Fellow

10-11-16

Harry A. Atwater, Jr., Howard Hughes Professor of Applied Physics and Materials Science; Director of the Joint Center for Artificial Photosynthesis, has been elected as a Fellow of the American Physical Society (APS) “for pioneering contributions to plasmonics and nanophotonics.” [APS Fellow Archive]

Tags: APhMS honors Harry Atwater

Noise-Canceling Optics

10-10-16

Changhuei Yang, Professor of Electrical Engineering, Bioengineering, and Medical Engineering, and colleagues have created the visual analogue of noise-canceling headphones—a camera system that can obtain images of objects obscured by murky media, such as fog or clouds, by canceling out the glare. Their device selectively cancels the scattered light, leaving only the light that is reflected or bounced off the objects and has slipped back through the murk unmolested. [Caltech story]

Tags: EE research highlights Changhuei Yang MedE

Your Future is Calling

10-03-16

Professor Morteza Gharib was one of the speakers at a recent symposium celebrating the Caltech–City of Hope Biomedical Research Initiative which provides seed grants to accelerate the development of basic scientific research and its translation into biomedical applications. Professor Gharib’s presentation was focused on measuring the ejection fraction, the fraction of blood that is ejected from the heart with each heartbeat. The group has designed a small piece of hardware that can connect to an iPhone and calculate a patient's ejection fraction—for less than $8. The device, called Vivio, gives comparable results to a cardiac magnetic resonance imaging, the gold standard in the medical industry for measuring heart health. [Caltech story]

Tags: research highlights GALCIT MedE Morteza Gharib

Open Online Course on Quantum Cryptography

09-29-16

Thomas Vidick, Assistant Professor of Computing and Mathematical Sciences, is co-teaching a massive open online course (MOOC)—CS/Ph 120, Quantum Cryptography—focused on the ways in which quantum mechanics can be used to create secure lines of communication. "It's a hot topic, but there are very few resources for people wanting to go beyond just the basics. Very few schools will even have a quantum cryptography course," Vidick says. [Caltech story] [Vidick blog]

Tags: CMS IST Thomas Vidick teaching

Mechanics of Materials Across Nano to Geological Time and Length Scales

09-29-16

A symposium was organized at Brown University on September 16-17, 2016 to celebrate the technical contributions of Professor Ares Rosakis on the occasion of his 60th birthday. The symposium was chaired by Professors Pradeep Guduru, Huajian Gao, and G. Ravichandran. It brought together distinguished engineers and scientists from multiple disciplines to discussion research frontiers relating to the mechanics of materials across nano to geological time and length scales. [Symposium program] [Photos]

Tags: research highlights Guruswami Ravichandran Ares Rosakis Pradeep Guduru Huajian Gao

Modular Space Telescope Could Be Assembled By Robot

09-28-16

Professor Sergio Pellegrino and colleagues including Professor Joel Burdick, are proposing a space observatory with a 100 meters diameter primary mirror. Their design calls for the use of more than 300 deployable truss modules that could be unfolded to form a scaffolding upon which a commensurate number of small mirror plates could be placed to create a large segmented mirror. In this concept, a spider-like, six-armed "hexbot" would assemble the trusswork and then crawl across the structure to build the mirror atop it. [Caltech story]

Tags: research highlights GALCIT MCE Sergio Pellegrino Joel Burdick

James J. Morgan Symposium

09-23-16

On Friday September 23rd, 2016 the Environmental Science and Engineering Department hosted a day-long tribute to James J. Morgan, Marvin L. Goldberger Professor of Environmental Engineering Science, Emeritus. The symposium featured a series of presentations by his former students and leaders in the field of aquatic chemistry. Professor Morgan’s teaching and research centered on aquatic chemistry; major themes comprised rates of abiotic manganese oxidation on particle surfaces and flocculation of natural water particles, and chemical speciation proved the key. He came to Caltech as Associate Professor of Environmental Health Engineering in 1965 and became the Goldberger Professor of Environmental Engineering Science in 1987. He has served Caltech in a variety of capacities including Academic Officer for Environmental Engineering Science, Dean of Students, Executive Officer for Environmental Engineering Science, Acting Dean of Graduate Studies, and Vice President for Student Affairs. [A Conversation with James J. Morgan] [Symposium program]

Tags: research highlights EAS history ESE James Morgan