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Digital Holographic Microscopy

10-26-15

Professor Morteza Gharib, and Dr. Jay Nadeau from GALCIT, as well as Dr. Christian Lindensmith from JPL are three of the four principle investigators on the holographic microscope project, dubbed SHAMU (Submersible Holographic Astrobiology Microscope with Ultraresolution). Their ultimate goal is to send the microscope on a spacecraft to search for biosignatures—signs of life—on other worlds such as Mars or Saturn's icy moon Enceladus. Holography is a method for recording holistic information about the light bouncing off a sample so that a 3-D image can be reconstructed at some later time. Compared to microscopy, holography offers the advantages of focusing over a relatively large volume and of capturing high-resolution images, without the trouble of moving parts that could break in extreme environments or during a launch or landing. [Caltech feature] [Videos of microbial mobility]

Tags: GALCIT Morteza Gharib JPL research highlight Jay Nadeau Christian Lindesmith

Professor Umans Named Simons Investigator in Computer Science

05-21-15

Christopher Umans, Professor of Computer Science, has been named a Simons Investigator in Computer Science by the Simons Foundation’s Mathematics and Physical Sciences Division. The award honors and supports "outstanding scientists in their most productive years, when they are establishing creative new research directions, providing leadership to the field and effectively mentoring junior scientists." Professor Umans’ research centers on algorithms and complexity. He has made contributions to the understanding of randomness in computation, and algorithms for fundamental algebraic problems which includes developing a group-theoretic approach for matrix multiplication. [List of awardees] [Caltech story]

Tags: honors research highlights CMS Christopher Umans

Professor Fredric Raichlen Passes Away

12-16-14

Fredric Raichlen, Professor of Civil and Mechanical Engineering, Emeritus, passed away on December 13, 2014 at age 82. He was an expert on the mechanics of tsunamis, the waves created by underwater earthquakes, volcanic eruptions, and other geologic events. He was also one of the founding faculty members of Caltech's doctoral program in environmental engineering science. [Caltech Obituary] [ENGenious profile of Prof. Raichlen’s student]

Tags: MCE EAS history ESE Fredric Raichlen

Professor Frank Marble Passes Away

08-12-14

Frank E. Marble, Richard L. and Dorothy M. Hayman Professor of Mechanical Engineering and Professor of Jet Propulsion, Emeritus, passed away on August 11, 2014 at age 96. He has made pioneering contributions to combustion in jet propulsion systems, flame stabilization, and propagation of acoustic waves. [Caltech Obituary] [Frank E. Marble Lecture in Aerospace]

Tags: GALCIT MCE EAS history Frank E. Marble

'Comb on a Chip' Powers New Atomic Clock Design

07-22-14

Scott Diddams who was a 2012 Caltech Moore Distinguished Scholar and is a Project Lead at National Institute of Standards and Technology (NIST) and colleagues including Professor Kerry Vahala have demonstrated a new design for an atomic clock that is based on a chip-scale frequency comb, or a microcomb. The microcomb clock is the first demonstration of all-optical control of the microcomb, and its accurate conversion of optical frequencies to lower microwave frequencies. Caltech researchers made the 2-millimeter-wide silica disk that generates the frequency comb for the new clock. [NIST Press Release] [Learn More]

Tags: APhMS research highlights Kerry Vahala IST Scott Diddams

Future Electronics May Depend on Lasers, Not Quartz

07-18-14

Kerry Vahala, Ted and Ginger Jenkins Professor of Information Science and Technology and Applied Physics as well as the Executive Officer for APhMS, and colleagues have developed a method to stabilize microwave signals in the range of gigahertz, or billions of cycles per second—using a pair of laser beams as the reference, in lieu of a quartz crystal. "There are always tradeoffs between the highest performance, the smallest size, and the best ease of integration. But even in this first demonstration, these optical oscillators have many advantages; they are on par with, and in some cases even better than, what is available with widespread electronic technology," Vahala says. [Caltech Release]

Tags: APhMS research highlights Kerry Vahala IST

GALCIT Alumnus Allen E. Puckett Passes Away

04-15-14

Allen E. Puckett (PhD ’49 Aeronautics), pioneering aerospace engineer and chairman emeritus of Hughes Aircraft Co., passed away on March 31, 2014. He was one of the engineers who made Hughes Aircraft into the United States’ leading defense electronics firm which dominated in the markets for air defense, radar systems, tactical missiles and satellites. He began his PhD in 1941 at Caltech at the invitation of Theodore von Kármán. While at GALCIT he helped design a new supersonic wind tunnel, the first of its kind in the country. Later, he produced the calculations that led to the development of delta wing theory, which predicts the aerodynamics of supersonic aircraft and continues to be applied in the production of modern aircraft. [LA Times Obituary]

Tags: GALCIT EAS history alumni Allen Puckett

EE students Win $100K Qualcomm Innovation Fellowships

04-15-14

Professor Babak Hassibi’s students Kishore Jaganathan, and Christos Thrampoulidis as well as Professor Pietro Perona’s students Ron Appel, and Krzysztof Chalupka, have won the 2014 Qualcomm Innovation Fellowship. Jaganathan, and Thrampoulidis’ proposal is entitled Interference Alignment via Matrix Completion for Cellular Networks and Network Coding. Appel, and Chalupka’s proposal is entitled Energy-Efficient Multiclass Classification for Visual Applications on Mobile Devices.  Each winner will receive a $100K fellowship. This year there were 137 submissions and only 9 winners have been announced. Caltech is the only school to have two winning teams. [List of Winners]

Tags: EE honors Pietro Perona Babak Hassibi Kishore Jaganathan Christos Thrampoulidis Ron Appel Krzysztof Chalupka

From First Mile to Last Mile

03-24-14

Over his 47 year career, William A. Goddard III, Charles and Mary Ferkel Professor of Chemistry, Materials Science, and Applied Physics, has made seminal contributions to the theory and application of computational materials and molecular science which have led to numerous advances in diverse areas of science and engineering. In celebration of his career and 77th birthday his colleagues, students, and collaborators gathered at a celebration at Caltech entitled Bill Goddard and Computational Materials & Molecular Science: From First Mile to Last Mile. Special guests and speakers included Ares Rosakis, Carver Mead, Harry Gray, nobel laureate Rudolph Marcus and Sadasivan Shankar from Intel Corporation. [Tribute article about Professor Gaddard III]

Tags: APhMS EAS history Ares Rosakis William Goddard Carver Mead Harry Gray Rudolph Marcus

Celebrating 50 Years of the Argon Ion Laser

02-14-14

William Bridges, Carl F Braun Professor of Engineering, Emeritus, discovered and patented the Argon ion laser on February 14, 1964, while at Hughes Research Laboratories. Today noble gas (argon, krypton, xenon) lasers are used in a variety of applications including DNA sequencers, cell sorters, eye surgery, and laser light shows. Professor Bridges' research work with lasers involved an airborne night reconnaissance system (AN/AVD-3), space communications systems, early high power laser weapons (the carbon dioxide gas dynamic laser), and hydrogen maser clocks for the global positioning system. He also holds the patent for the Ionized Noble Gas Laser. [Oral History of Prof. Bridges]

Tags: APhMS EE research highlights EAS history William Bridges