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Self-folding “Rollbot” paves the way for fully untethered soft robots

08-21-19

Chiara Daraio, Professor of Mechanical Engineering and Applied Physics, and colleagues have developed soft robotic systems, inspired by origami, that can move and change shape in response to external stimuli, paving the way for fully untethered soft robots. "This work demonstrates how the combination of responsive polymers in an architected composite can lead to materials with self-actuation in response to different stimuli. In the future, such materials can be programmed to perform ever more complex tasks, blurring the boundaries between materials and robots," said Professor Daraio. [Caltech story]

Tags: research highlights Chiara Daraio MCE APh

A Promising Step in Returning Bipedal Mobility

08-19-19

Professors Aaron Ames and Joel Burdick have launched a new research initiative, RoAM (Robotic Assisted Mobility), aimed at restoring natural and stable locomotion to individuals with walking deficiencies that result from spinal cord injuries and strokes. RoAm unites robotic assistive devices—including exoskeletons and prostheses—with artificial intelligence (AI)-infused neurocontrol. "Bipedal walking is difficult to achieve in a stable fashion," says Professor Ames. "While crutches help users of the exoskeletons to stay upright, they undercut many of the health benefits that upright locomotion might otherwise provide. In addition, they do not allow users to do anything else with their hands while walking." [Caltech story]

Tags: research highlights MedE Yu-Chong Tai MCE CMS Joel Burdick Yisong Yue Aaron Ames

Finding the Magic in the Magic Angle

08-09-19

Stevan Nadj-Perge, Assistant Professor of Applied Physics and Materials Science, and colleagues have built upon, the discovery of the "magic angle" for stacked sheets of graphene, by generating an image of the atomic structure and electronic properties of magic angle-twisted graphene, yielding new insight into the phenomenon by offering a more direct way of studying it. They have developed a new method of creating samples of magic angle-twisted graphene that can be used to align the two sheets of graphene very precisely while leaving it exposed for direct observation. [Caltech story]

Tags: APhMS research highlights Stevan Nadj-Perge

Professor Ortiz Receives John von Neumann Medal

08-09-19

Michael Ortiz, Frank and Ora Lee Marble Professor of Aeronautics and Mechanical Engineering, is the recipient of the 2019 U.S. Association for Computational Mechanics (USACM) John von Neumann Medal "for pioneering and sustained contributions in developing computational methods to elucidate material behavior across length and time scales (atomistic to continuum), development of the quasi-continuum method, and authorship of highly cited articles." This is highest award given by USACM. It honors individuals who have made outstanding, sustained contributions in the field of computational mechanics generally over periods representing substantial portions of their professional careers. [List of award recipients]

Tags: honors GALCIT MCE Michael Ortiz

Professor Owhadi Receives 2019 Dahlquist Prize From SIAM

07-30-19

Houman Owhadi, Professor of Applied and Computational Mathematics and Control and Dynamical Systems, has received the Germund Dahlquist Prize from the Society for Industrial and Applied Mathematics (SIAM). The prize is awarded every two years to one individual for original contributions to numerical solution of differential equations and numerical methods for scientific computing. [List of Past Recipients]

Tags: honors CMS Houman Owhadi

Solar Flares, Bubble Rings, and Ink Chandeliers

07-26-19

Peter Schroeder, Shaler Arthur Hanisch Professor of Computer Science and Applied and Computational Mathematics, and colleagues have generated a computer simulation of underwater bubble rings that is so realistic it is virtually indistinguishable from a video of the real thing. "What drives me is finding these beautiful descriptions of something that looks terribly complicated but can be reduced to a few mathematical key concepts. Then the rest just follows from there. There's beauty in seeing that a very simple principle all of a sudden gives rise to the complex appearance we perceive," Professor Schröder says. [Caltech story]

Tags: research highlights CMS Peter Schroeder

Professor Bernardi Receives Emerging Young Investigator Award

07-24-19

Marco Bernardi, Assistant Professor of Applied Physics and Materials Science, was a recipient of the Emerging Young Investigator Award at the 4th Functional Oxide Thin Films for Advanced Energy and Information Technology Conference. Professor Bernardi also gave an invited talk entitled “Advances in Computing Charge Carrier Dynamics in Oxides From First Principles.”

Tags: APhMS honors Marco Bernardi

Microrobots Activated by Laser Pulses Show Promise For Treating Tumors

07-24-19

MedE Professors Wei Gao and Lihong Wang are working on microrobots that can deliver drugs to specific spots inside the body while being monitored and controlled from outside the body. "These micromotors can penetrate the mucus of the digestive tract and stay there for a long time. This improves medicine delivery," Professor Gao says. "But because they're made of magnesium, they're biocompatible and biodegradable." [Caltech story]

Tags: EE research highlights MedE Lihong Wang Wei Gao

Best Student Paper Award at International Workshop

07-23-19

The paper "Distributed multi-target relative pose estimation for cooperative spacecraft swarm" co-authored by GALCIT students Kai Matsuka, Sorina Lupu, Yashwanth Kumar Nakka, and Rebecca Foust, as well as Professor Soon-Jo Chung and JPL Chief Technologist, Dr. Fred Hadaegh has won one of the two Best Student Paper awards at the 2019 International Workshop on Satellite Constellations and Formation Flying (IWSCFF). The paper presents a multi-agent localization algorithm architecture applied to a large-scale spacecraft swarm. The proposed algorithm is verified by simulation and robotic experiments using the air-bearing spacecraft simulators. The team also acknowledged the work of two Caltech undergraduate students Aaron Feldman and Jennifer Sun for their contribution to the robotic experiments. [Read the paper]

Tags: honors alumni Soon-Jo Chung student Fred Hadaegh Kai Matsuka Yashwanth Kumar Nakka Rebecca Foust Sorina Lupu

Konstantin Zuev Receives Northrop Grumman Prize for Excellence in Teaching

07-22-19

Konstantin Zuev, Lecturer in Computing and Mathematical Sciences, is the recipient of the 2019 Northrop Grumman Prize for Excellence in Teaching. The Prize is awarded to an EAS professor or lecturer who demonstrates, in the broadest sense, unusual ability, creativity, and innovation in undergraduate and graduate classroom or laboratory teaching. A nomination for Konstantin Zuev read, "It is not just his major contributions in terms of teaching classes and designing new ones that set him apart and make him an ideal candidate for the Northrup Grumman teaching award. It is his rapport with the students, and the passionate love they show for his teaching and his classes."

Tags: honors CMS teaching Konstantin Zuev