News & Events


Julia Greer Named 2024 SES A.C. Eringen Medal Recipient


Julia Greer, Ruben F. and Donna Mettler Professor of Materials Science, Mechanics and Medical Engineering; Fletcher Jones Foundation Director of the Kavli Nanoscience Institute, has been selected as the 2024 recipient of the Society of Engineering Science’s (SES) A.C. Eringen Medal. Greer was selected for her sustained outstanding contributions in the field of three-dimensional nano- and micro-architected materials as well as the development of innovative in-situ experimental methods and instruments used to study the mechanics of small-scale materials.

The SES A.C. Eringen Medal is awarded annually in recognition of sustained outstanding achievements in engineering science, and the award recipient is invited to speak at the SES annual meeting. The 2024 SES annual meeting will be hosted by Westlake University in China. 

Tags: APhMS honors MCE Julia Greer KNI materials science

Technique for 3-D Printing Metals at the Nanoscale Reveals Surprise Benefit


Late last year, Caltech researchers revealed that they had developed a new fabrication technique for printing microsized metal parts containing features about as thick as three or four sheets of paper. Now, the team has reinvented the technique to allow for printing objects a thousand times smaller: 150 nanometers, which is comparable to the size of a flu virus. In doing so, the team also discovered that the atomic arrangements within these objects are disordered, which would, at large scale, make these materials unusable because they would be considered weak and "low quality." In the case of nanosized metal objects, however, this atomic-level mess has the opposite effect: these parts can be three-to-five-times stronger than similarly sized structures with more orderly atomic arrangements.

The work was conducted in the lab of Julia R. Greer, the Ruben F. and Donna Mettler Professor of Materials Science, Mechanics and Medical Engineering; and Fletcher Jones Foundation Director of the Kavli Nanoscience Institute. It is described in a paper appearing in the journal Nano Letters. [Caltech story]

Tags: APhMS research highlights MCE Julia Greer Wenxin Zhang

Caltech Students and Postdoc Receive ICRA Best Paper Awards


At the 2023 International Conference on Robotics and Automation (ICRA), three teams featuring Aaron Ames [Bren Professor of Mechanical and Civil Engineering and Control and Dynamical Systems] and a Caltech EAS student/postdoc received a best paper award.

MCE postdoc Jeeseop Kim received the ICRA 2023 Outstanding Paper Award (best overall paper at the conference) for co-authoring "Distributed Data-Driven Predictive Control for Multi-Agent Collaborative Legged Locomotion." CDS graduate student Noel Csomay-Shanklin and CMS graduate student Victor Dorobantu received the Outstanding Dynamics and Control Paper for "Nonlinear Model Predictive Control of a 3D Hopping Robot: Leveraging Lie Group Integrators for Dynamically Stable Behaviors." CDS graduate student Wyatt Ubellacker received the Outstanding Student Paper Award for "Robust Locomotion on Legged Robots through Planning on Motion Primitive Graphs." 

Tags: honors MCE CMS Aaron Ames CDS Noel Csomay-Shanklin Wyatt Ubellacker Jeeseop Kim Victor Dorobantu

Winners of the 2023 Demetriades - Tsafka - Kokkalis Prizes Announced


The Demetriades - Tsafka - Kokkalis Prizes are awarded annually to PhD candidates selected for the best thesis, publication, or discovery in select fields. Saransh Sharma, advised by Professor Azita Emami, has received the prize in Biotechnology or Related Fields for his research in developing ultra-low power and highly miniaturized medical electronics for in-vivo localization and tracking. Nathaniel Wei, advised by Professor John Dabiri, has received the prize in Environmentally Benign Renewable Energy Sources or Related Fields for his research that explores the ways in which unsteady flows in the atmosphere can be leveraged in wind-energy systems for enhanced performance, robustness, and operational longevity. Rebecca Gallivan, advised by Professor Julia Greer, has received the prize in Nanotechnology or Related Fields. Coupled with the development of novel materials processing, Gallivan's research focuses on uncovering fundamental insight into the relationship between length-scale and microstructural features on nanomechanical phenomena in order to lay the foundation for advanced engineering and complex design of materials in nanotechnologies.

Tags: APhMS EE honors GALCIT MedE MCE John Dabiri Julia Greer Demetriades - Tsafka - Kokkalis Prizes Azita Emami Rebecca Gallivan Saransh Sharma Nathan Wei

In a First, Caltech's Space Solar Power Demonstrator Wirelessly Transmits Power in Space


A space solar power prototype that was launched into orbit in January is operational and has demonstrated its ability to wirelessly transmit power in space and to beam detectable power to Earth for the first time. Wireless power transfer was demonstrated by MAPLE, one of three key technologies being tested by the Space Solar Power Demonstrator (SSPD-1), the first space-borne prototype from Caltech's Space Solar Power Project (SSPP). SSPP aims to harvest solar power in space and transmit it to the Earth's surface. [Caltech story]

Tags: APhMS EE GALCIT MCE Harry Atwater Ali Hajimiri Sergio Pellegrino

Caltech to Launch Space Solar Power Technology Demo into Orbit in January


In January 2023, the Caltech Space Solar Power Project (SSPP) is poised to launch into orbit a prototype, dubbed the Space Solar Power Demonstrator (SSPD), which will test several key components of an ambitious plan to harvest solar power in space and beam the energy back to Earth. [Caltech story]

Tags: APhMS EE GALCIT Harry Atwater Ali Hajimiri Sergio Pellegrino SSPP

Two EAS Alumni Receive 2022 Distinguished Alumni Awards


Caltech’s annual Distinguished Alumni Awards recognize “a particular achievement of noteworthy value, a series of such achievements, or a career of noteworthy accomplishment.” The 2022 luminaries include Sudhir Jain (MS ’80, PhD ’83, Civil Engineering), India’s preeminent earthquake engineer, who helped improve his country’s seismic codes; and Kam-Yin Lau (BS ’78, MS ’78, PhD ’81, Electrical Engineering), an electrical engineer whose work ushered in the era of broadband cable and wireless internet. [Caltech Magazine Story]

Tags: EE honors MCE alumni kam-yin lau sudhir jain distinguished alumni

New Process Allows 3-D Printing of Microscale Metallic Parts


Engineers at Caltech have developed a method for 3-D printing pure and multicomponent metals, at a resolution that is, in some cases, an order of magnitude smaller than previously possible. "We had to develop a new way of doing it, and we couldn't rely on heat to build our structures," says Max Saccone. [Caltech story]

Tags: APhMS research highlights MedE MCE MCE Julia Greer Max Saccone Rebecca Gallivan Daryl Yee Kai Narita

Beaming Clean Energy From Space


Once considered science fiction, technology capable of collecting solar power in space and beaming it to Earth to provide a global supply of clean and affordable energy is moving closer to reality. Through the Space-based Solar Power Project (SSPP), a team of Caltech researchers is working to deploy a constellation of modular spacecraft that collect sunlight, transform it into electricity, then wirelessly transmit that electricity wherever it is needed—including to places that currently have no access to reliable power. "This is an extraordinary and unprecedented project," says Harry Atwater, Otis Booth Leadership Chair, Division of Engineering and Applied Science; Howard Hughes Professor of Applied Physics and Materials Science; Director, Liquid Sunlight Alliance. "It exemplifies the boldness and ambition needed to address one of the most significant challenges of our time, providing clean and affordable energy to the world." [Caltech story]

Tags: APhMS EE research highlights MedE MCE Harry Atwater Ali Hajimiri Sergio Pellegrino