Machine Learning Helps Robot Swarms Coordinate
07-14-20
Soon-Jo Chung, Bren Professor of Aerospace, Yisong Yue, Professor of Computing and Mathematical Sciences, postdoctoral scholar Wolfgang Hönig, and graduate students Benjamin Rivière and Guanya Shi, have designed a new data-driven method to control the movement of multiple robots through cluttered, unmapped spaces, so they do not run into one another. "Our work shows some promising results to overcome the safety, robustness, and scalability issues of conventional black-box artificial intelligence (AI) approaches for swarm motion planning with GLAS and close-proximity control for multiple drones using Neural-Swarm," says Chung. [Caltech story]
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GALCIT
CMS
Yisong Yue
CNS
Soon-Jo Chung
postdocs
Benjamin Rivière
Guanya Shi
Wolfgang Hönig
Microstructures Self-Assemble into New Materials
03-03-20
A new process developed at Caltech makes it possible for the first time to manufacture large quantities of materials whose structure is designed at a nanometer scale—the size of DNA's double helix. Pioneered by Julia R. Greer, Ruben F. and Donna Mettler Professor of Materials Science, Mechanics and Medical Engineering; Fletcher Jones Foundation Director of the Kavli Nanoscience Institute, "nanoarchitected materials" exhibit unusual, often surprising properties—for example, exceptionally lightweight ceramics that spring back to their original shape, like a sponge, after being compressed. Now, a team of engineers at Caltech and ETH Zurich have developed a material that is designed at the nanoscale but assembles itself—with no need for the precision laser assembly. "We couldn't 3-D print this much nanoarchitected material even in a month; instead we're able to grow it in a matter of hours," says Carlos M. Portela, Postdoctoral Scholar. "It is exciting to see our computationally designed optimal nanoscale architectures being realized experimentally in the lab," says Dennis M. Kochmann, Visiting Associate. [Caltech story]
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APhMS
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GALCIT
MedE
MCE
Julia Greer
KNI
Dennis Kochmann
postdocs
Carlos Portela
CAST Awards Seed Funding to Three New Projects
08-21-19
Caltech Center for Autonomous Systems and Technologies (CAST) has awarded seed funding to three new collaborative projects. The first project was proposed by Aerospace postdoctoral scholar H. Jane Bae, along with Professors McKeon, Tropp, and Meiron. It aims to develop algorithms to predict the onset of extreme events in real time thus allowing autonomous air vehicles to avoid or compensate for the rough turbulent airflow. The second project was proposed by Professors Effros, and Murray and will focus a new approach to the analysis, design, and implementation of complex, networked systems with the goal of optimizing latency in information sharing. The third project was proposed by Professor Thompson and JPL colleagues I. Fenty, R. Castano, D. Limonadi, and G. Woodward. This project plans to take a step towards developing autonomous observing arrays that will use ocean robotics to deploy ice melt-rate instruments within ice shelf cavities.
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GALCIT
Beverley McKeon
Michelle Effros
Joel Tropp
Andrew Thompson
Richard Murray
Dan Meiron
postdocs
H. Jane Bae
I. Fenty
R. Castano
D. Limonadi
G. Woodward
Dragonfly Larvae Inspire New Designs for Prosthetic Heart Valves
07-17-18
Professor Mory Gharib and postdoctoral researcher Chris Roh (MS '13, PhD '17) have studied the design and control of the jets that dragonfly larvae use to propel themselves to re-design health values. "The current heart valve design is a one-size-fits-all, where no patient-specific design is considered, and this causes many post-transplant complications," Dr. Roh says. "We believe that an intentionally off-centered opening of the heart valve to more closely match the patient's original blood flow will be an important design parameter that can be adjusted based on each patient's heart morphology." [Caltech story]
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GALCIT
MedE
Morteza Gharib
Chris Roh
postdocs