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Lasers Aim to Replace Scalpels in Cutting-Edge Biopsy Technique

05-16-19

Professor Lihong Wang and Postdoctoral Scholar Dr. Junhui Shi have developed a new imaging technique that uses pulses from two kinds of lasers to take pictures of microscopic biological structures. This new approach, called ultraviolet-localized mid-infrared photoacoustic microscopy, or ULM-PAM, develops images of the microscopic structures found in a piece of tissue by bombarding the sample with both infrared and ultraviolet laser light. "Because ultraviolet light and infrared have different properties, we had to find special mirrors and glass that could focus both," Dr. Shi says. "And because no camera exists that can see both, we had to develop ways to see if they were correctly focused." [Caltech story]

Tags: EE research highlights MedE Lihong Wang postdocs Junhui Shi

Bob McEliece Passes Away

05-13-19

Robert J. McEliece (BS '64, PhD '67), Caltech alumnus and Allen E. Puckett Professor and Professor of Electrical Engineering, Emeritus, passed away on May 8, 2019 at the age of 76. "Bob McEliece was renowned for his contributions to a wide range of problems in information transmission and storage," said EAS Chair Ravichandran. "His contributions are drivers for numerous applications in modern communications. He was an outstanding researcher and a beloved and inspiring teacher, mentor, and colleague." [Caltech story]

Tags: EE EAS history alumni Robert McEliece

Professor Marandi Wins Young Scientist Award

05-07-19

Alireza Marandi, Assistant Professor of Electrical Engineering and Applied Physics, has received a 2019 Young Scientist Award of the International Union of Pure and Applied Physics (IUPAP). He was recognized “for contributions to nonlinear photonics, particularly his pioneering work on computing with networks of Optical parametric oscillators (OPOs) and demonstration of optical Ising machines, as well as half-harmonic generation of mid-infrared frequency combs.” [List of award winners]

Tags: EE honors APh Alireza Marandi

Undergraduate Students Win International Data Science Competition

04-19-19

Undergraduate students Hongsen Qin, Emma Qian, Thomas Hoffmann, and Alexander Zlokapa (advised by Professors Aaron Ames, Erik Winfree, Jonathan Katz, Maria Spiropulu, and Yaser Abu-Mostafa) have won the Citadel Data Open International Data Science Competition. This winning team chose to investigate the optimal way to spend $1 billion to save lives from malaria and sanitation-related diseases, allocating funds for different prevention methods and optimizing budget breakdowns country by country. To quantify the socioeconomic impacts of their policy proposal, they modeled a variety of aspects from mosquito feeding cycles to climate change using techniques ranging from causal discovery methods to interpretable machine learning. The Caltech team was among 24 teams that were evaluated and questioned by a panel of experts including the former Chief Scientist of AI at Microsoft, a Princeton professor, and the chief of equities at Citadel. The Caltech team was chosen as the first place winner based on the depth, rigor, and comprehensiveness of their analysis.

Tags: EE honors CMS Erik Winfree Yaser Abu-Mostafa Aaron Ames Hongsen Qin Emma Qian Thomas Hoffmann Alexander Zlokapa

Scarcity in the Modern World

04-08-19

A new book, Scarcity in the Modern World, examines how concerns about the scarcity of environmental resources such as water, food, energy and materials have developed, and subsequently been managed, from the 18th to the 21st century. The book is co-edited by Dr. Neil Fromer, Professor John Brewer, and their colleagues from University of Chicago and University of London.  It brings together scholars from a variety of academic disciplines to provide an innovative multi-disciplinary perspective that corrects previous scholarship which has discussed scientific and cultural issues separately. Other Caltech contributors to the book include Professors David Rutledge and Jean-Laurent Rosenthal. [Learn more]

Tags: EE David Rutledge Neil Fromer John Brewer Jean-Laurent Rosenthal

Laser Technology Helps Researchers Scrutinize Cancer Cells

04-01-19

Lihong Wang, Bren Professor of Medical Engineering and Electrical Engineering, and colleagues are using photoacoustic microscopy (PAM) to improve on an existing technology for measuring the oxygen-consumption rate (OCR). This new method allows the researchers to determine how oxygenated a sample of blood is by "listening" to the sound it makes when illuminated by the laser. Professor Wang calls this single-cell metabolic photoacoustic microscopy, or SCM-PAM. [Caltech story]

Tags: EE research highlights MedE Lihong Wang

Best Paper Award

03-13-19

Professor Pietro Perona along with Caltech alumni David Hall and Steve Branson have won the 2018 U. V. Helava Best Paper Award from the ISPRS Journal of Photogrammetry and Remote Sensing. Their paper “From Google Maps to a fine-grained catalog of street trees” was selected for the award. The jury described the work in the paper as “innovative, and applicable for large areas of tree classification and inventories. The developed methodology would affect practices of urban tree management globally.” [Read the paper]

Tags: EE honors Pietro Perona alumni postdocs David Hall Steve Branson

Electrical Engineering Student Selected for 2019 Knight-Hennessy Scholars Class

03-06-19

Kavya Sreedhar, a senior double majoring in electrical engineering and business, economics, and management, has been named to this year's class of Knight-Hennessy Scholars, a graduate-level scholarship program founded by Stanford University. The program aims to develop a community of future global leaders to address complex challenges through collaboration and innovation. Sreedhar will receive a scholarship providing full tuition, room and board, and a living stipend while she pursues a PhD in electrical engineering. Her graduate work will be focused on circuits and hardware research for machine learning and artificial intelligence applications. She is joined by 67 other students chosen from a pool of 4,424 applicants for the program's 2019 cohort. [Caltech story]

Tags: EE honors alumni Kavya Sreedhar

2019 Caltech Distinguished Alumni

03-01-19

Caltech has recognized alumnus William Dally (PhD ’86, Computer Science) with the Distinguished Alumni Award, the highest honor regularly bestowed by the Institute. Dally was recognized “for his significant contributions to the architecture of interconnection networks. He developed much of the technology found in modern interconnection networks including wormhole routing, virtual-channel flow control, global adaptive routing, modern network topology, deadlock analysis, performance analysis, fault-tolerance methods, and equalized high-speed signaling.” [Caltech story] [Distinguished Lecture at Caltech]

Tags: EE honors CMS alumni William Dally

Professor Marandi Receives NSF CAREER Award

02-19-19

Alireza Marandi, Assistant Professor of Electrical Engineering and Applied Physics, has been awarded the National Science Foundation's (NSF) Faculty Early Career Development (CAREER) Award for his project, "Quadratically Nonlinear Micro-Resonators: Enabling Next Generation Photonic Devices and Systems". The CAREER program is NSF's most prestigious awards for junior faculty members. The level and 5-year duration of the awards are designed to enable awardees to develop careers as outstanding teacher-scholars. Awardees are chosen because they exemplify the role of teacher-scholars through outstanding research, excellent education and the integration of education and research within the context of the mission of their organizations.

Tags: APhMS EE honors NSF CAREER NSF Alireza Marandi