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Microscopic Devices That Control Vibrations Could Allow Smaller Mobile Devices

12-12-18

Chiara Daraio, Professor of Mechanical Engineering and Applied Physics, and colleagues have developed phononic devices that include parts that vibrate extremely fast, moving back and forth up to tens of millions of times per second. The devices were developed by creating silicon nitride drums that are just 90 nanometers thick. The drums are arranged into grids, with different grid patterns having different properties. Professor Daraio, along with former Caltech postdoctoral scholar Jinwoong Cha, have shown that arrays of these drums can act as tunable filters for signals of different frequencies and can act like one-way valves for high-frequency waves. [Caltech story]

Tags: research highlights Chiara Daraio MCE APh postdocs Jinwoong Cha

Aerospace Students Receive Innovation Award At LA Autoshow

12-12-18

GALCIT graduate students Marcel Veismann, Chris Dougherty, and Xichen Shi received a KPMG innovation award for their work on the Center on Autonomous Systems and Technology (CAST) robotic flying ambulance. The students were recognized for “achieving the highest level of excellence in research and innovation” and had the opportunity to presented to an audience of 300 executives at the LA Auto Show.

Tags: honors GALCIT Marcel Veismann Chris Dougherty Xichen Shi

Professor Ortiz Honored by Universidad Politécnica de Madrid

12-11-18

Michael Ortiz, Frank and Ora Lee Marble Professor of Aeronautics and Mechanical Engineering, has received a Doctorate Honoris Causa (honorary doctorate) from his alma mater, Universidad Politécnica de Madrid. [ENGenious article featuring Professor Ortiz’s solid mechanics research]

Tags: honors GALCIT MCE Michael Ortiz

Caltech President’s 2018 End of Year Message

12-11-18

President Thomas F. Rosenbaum’s end of the year message to the Caltech community highlights the InSight spacecraft landing and the celebration of Frances Arnold’s 2018 Nobel Prize in Chemistry. He states, “these recent events … underscore the extraordinary technological acumen that is necessary to realize the implications of big ideas. The Institute is known throughout the world for its mastery of fundamental science, but it is the connection of these fundamental precepts to engineering innovation that sets Caltech apart.” [Read the full message]

Tags: Thomas Rosenbaum

Alumnus to Exploring Ways to Tackle California’s Housing Crisis

12-07-18

Caltech has awarded the inaugural Milton and Rosalind Chang Career Exploration Prize to EAS undergraduate alumnus, Sean McKenna (BS ’17, ACM) for his proposed project “Exploring Ways to Tackle California’s Housing Crisis.” McKenna plans to spend the next year connecting with residents, housing developers, homeless shelters, technology innovators, and policymakers in California and Washington, DC to learn more about the roots of the housing crisis. He is grateful for the “incredible amount of freedom" the Chang Prize will give him "to figure out how the skills and passions I developed at Caltech might translate into making a difference in the housing crisis, a problem that is very real for me, other Techers, and all residents of California.” [Alumni Association story]

Tags: honors CMS alumni Sean McKenna

The Big Picture

12-03-18

Thanks to Professor Pietro Perona and his graduate students including Grant Van Horn and Sara Beery, the next wildlife photo you snap might set you on a path to helping map life on Earth. “The whole web, this huge repository of wonderful information, is indexed by words,” Perona says. “But when we have an image—a visual query—we don’t know what to do unless there is an expert next to us. We’ve gotten so numb to the idea that we’ll never find the answer out.” [Breakthrough story]

Tags: EE research highlights CMS Pietro Perona Grant Van Horn Sara Beery

EE Alumnus on Forbes 30 Under 30 List

11-27-18

Fei Chen (BS ’11 EE) is on the 2019 Forbes 30 Under 30 list for “building better microscopy technologies … that could help explain how complex tissues like the brain, made of a large collection of diverse cell types, are organized.” As an Electrical Engineering undergraduate student at Caltech Fei Chen was an Axline Merit Scholar for his outstanding record of personal and academic accomplishments. Currently he is a Principal Investigator at the Broad Institute, Harvard-MIT. [Forbes 30 Under 30 Full List]

Tags: EE honors alumni Fei Chen

Professor Daraio Receives Outstanding Alumni Award

11-26-18

Chiara Daraio, Professor of Mechanical Engineering and Applied Physics, has been awarded the UC San Diego Mechanical and Aerospace Engineering Outstanding Alumna Award for her outstanding achievements in mechanical metamaterials and materials science. [Award recipients]

Tags: honors Chiara Daraio MCE APh

Nailing It: Caltech Engineers Help Show That InSight Lander Probe Can Hammer Itself Into Martian Soil

11-26-18

Professor José Andrade’s research team including Postdoctoral researchers Ivan Vlahinic and Jason Marshall have helped the InSight Mars lander boldly go where no one has gone before: beneath the surface of Mars. InSight is equipped with two main instrument packages: a seismometer for studying how seismic waves (for example, from marsquakes and meteorite impacts) travel through the planet and a "mole" that will burrow into the ground, dragging a tether with temperature sensors behind it to measure how temperatures change with depth on the planet. These instruments will tell scientists about Mars's interior structure (similar to the way an ultrasound lets doctors "see" inside a human body) and also about the heat flow from the planet's interior. When designing the mole the engineers at JPL wanted to be certain that it would be capable of reaching the necessary depth, and so they called on Professor Andrade, an expert on the physics of granular materials. He was able to develop new computer models that helped the JPL team predict the mole's effectiveness in Martian soil. Unless the mole encounters an obstacle, Andrade is confident that it will be successful. [Caltech story]

Tags: research highlights MCE Jose Andrade postdocs Ivan Vlahinic Jason Marshall

Learning Directly From Data Rather Than Human-Provided Expertise

11-19-18

Alumnus Yong Sheng Soh (PhD ’18, ACM), advised by Professor Venkat Chandrasekaran, has won the 2018 INFORMS Optimization Society Student Prize for his paper entitled Learning Semidefinite-Representable Regularizers. Regularization-based algorithms are widely used in the solution of data-driven inverse problems arising in statistics, operations research, signal processing, and machine learning. These approaches typically require a great deal of prior domain-specific expertise about the structure of the underlying problem. Such expertise is especially challenging to obtain in the modern era of 'Big Data' in which our ability to sense all manner of phenomena and produce massive datasets far exceeds our ability to understand the underlying mechanisms governing the phenomena. In his award-winning work, which has been accepted for publication at the Journal of the Foundations of Computational Mathematics, Yong Sheng has developed a new framework for learning suitable regularization methods directly from data rather from human-provided expertise. [INFORMS Optimization Society Award] [Read the paper]

Tags: honors CMS alumni Venkat Chandrasekaran Yong Sheng Soh