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Ultrafast Camera Films 3-D Movies at 100 Billion Frames Per Second

10-19-20

Lihong Wang, Bren Professor of Medical Engineering and Electrical Engineering, has developed technology that can reach blistering speeds of 70 trillion frames per second, fast enough to see light travel. Just like the camera in your cell phone, though, it can only produce flat images. Now, Wang's lab has gone a step further to create a camera that not only records video at incredibly fast speeds but does so in three dimensions. [Caltech story]

Tags: EE research highlights MedE Lihong Wang

New Device Powers Wearable Sensors Through Human Motion

10-16-20

Wei Gao, Assistant Professor of Medical Engineering, has been developing sensors as well as novel approaches to power them. Previously, he created a sensor that could monitor health indicators in human sweat that is powered by sweat itself. Now, Gao has developed a new way to power wireless wearable sensors: He harvests kinetic energy that is produced by a person as they move around. "Instead of using fancy materials, we use commercially available flexible circuit boards," he says. "This material is cheap and very durable and mechanically robust over long periods of time." [Caltech story]

Tags: research highlights MedE Wei Gao

Professor Gao Unveils Sensor that Rapidly Detects COVID-19 Infection Status, Severity, and Immunity

10-02-20

One feature of the COVID-19 virus that makes it so difficult to contain is that it can be easily spread to others by a person who has yet to show any signs of infection. Professor Wei Gao has developed a new type of multiplexed test (a test that combines multiple kinds of data) with a low-cost sensor that may enable the at-home diagnosis of a COVID infection through rapid analysis of small volumes of saliva or blood, without the involvement of a medical professional, in less than 10 minutes. "This is the only telemedicine platform I've seen that can give information about the infection in three types of data with a single sensor," Gao says. "In as little as a few minutes, we can simultaneously check these levels, so we get a full picture about the infection, including early infection, immunity, and severity." [Caltech story]

Tags: research highlights MedE Wei Gao

Isabella Yang receives Baxter Young Investigator Award

08-18-20

Graduate student Yiran (Isabella) Yang, working with Professor Wei Gao, has received a first-tier Baxter Young Investigator Award for her research on a wearable sweat sensor for clinical nutrition. This award is given for an outstanding research work which aligns with Baxter’s mission of saving and sustaining patients’ lives.

Tags: honors MedE Wei Gao Isabella Yang

Winners of the 2020 Demetriades - Tsafka - Kokkalis Prizes Announced

06-24-20

The student winners of the 2020 Demetriades - Tsafka - Kokkalis Prizes were announced at the end of this academic year. Manuel Bedrossian has received the prize in Biotechnology. His research is in the development of novel optical imaging devices to investigate and characterize microbial populations in extreme environments around the world. Vinayak Narasimhan has received the prize in Biotechnology. His research is in the utilization of nanostructures inspired from nature in practical biomedical applications. Tyler Ross has received the prize in Nanotechnology. His research is in guiding biomolecular filaments and motors to form structures and flow fields with patterned light. Adam Neumann has received the prize in Nanotechnology. His research involves incorporating nanoscale sensors into a mass spectrometer and using them to weigh individual molecules and perform rudimentary imaging of them. Joaquin Garcia Suarez has received the prize in Seismo-Engineering, Prediction, and Protection. His research is in fundamental research in Continuum Mechanics to better understand the behavior of civil structures during earthquakes.

Tags: honors MedE MCE Demetriades - Tsafka - Kokkalis Prizes Vinayak Narasimhan Joaquin Garcia Suarez Adam Neumann Tyler Ross Manuel Bedrossian

Wei Gao Receives IEEE EMBS Academic Early Career Achievement Award

06-16-20

Wei Gao, Assistant Professor of Medical Engineering, has won the 2020 IEEE EMBS Academic Early Career Achievement Award for innovative and pioneering contributions in the field of bioelectronic devices from wearable biosensors for continuous personalized health monitoring to synthetic micro/nanorobotics for in vivo biomedical applications. This award is given annually to an individual for significant contributions to the field of biomedical engineering as evidenced by innovative research design, product development, patents, and/or publications made by an individual who is within 10 years of completing their highest degree at the time of the nomination.

Tags: honors MedE Wei Gao

Professor Gao Named Young Scientist by the World Economic Forum

05-26-20

Wei Gao, Assistant Professor of Medical Engineering, has been selected as a 2020 Young Scientist by the World Economic Forum. Each year the selection Committee honours 25 Young Scientists under the age of 40 in recognition of their contribution to cutting-edge research. Candidates are selected based on their achievements in expanding the boundaries of knowledge and practical applications of science in issues as diverse as child psychology, chemical oceanography and artificial intelligence. Gao's research is focused on developing skin-interfaced wearable biosensors that will enable analytics through sweat rather than blood, leading to non-invasive and real-time analysis and timely medical intervention. [2020 Young Scientists] [Brochure]

Tags: honors MedE Wei Gao

Seeing Through Opaque Media

05-12-20

Changhuei Yang, Thomas G. Myers Professor of Electrical Engineering, Bioengineering, and Medical Engineering, has developed a technique that combines fluorescence and ultrasound to peer through opaque media, such as biological tissue. "We hope that one day this method can be deployed to extend the operating depth of fluorescence microscopy and help image fluorescent labeled cells deep inside living animals," says Yang. [Caltech story]

Tags: EE research highlights Changhuei Yang MedE

New Ultrafast Camera Takes 70 Trillion Pictures Per Second

05-04-20

A new camera developed by Lihong Wang, Bren Professor of Medical Engineering and Electrical Engineering, is capable of taking as many as 70 trillion frames per second. The camera technology, which Wang calls compressed ultrafast spectral photography (CUSP), combines a laser that emits extremely short pulses of laser light that last only one quadrillionth of a second (one femtosecond) with optics and a specialized type of camera. The technology could open up new avenues of research in fields that include fundamental physics, next-generation semiconductor miniaturization, and the life sciences. "We envision applications in a rich variety of extremely fast phenomena, such as ultrashort light propagation, wave propagation, nuclear fusion, photon transport in clouds and biological tissues, and fluorescent decay of biomolecules, among other things," Wang says. [Caltech story]

Tags: EE research highlights MedE Lihong Wang

Electronic Skin Fully Powered by Sweat Can Monitor Health

04-23-20

One of the ways we experience the world around us is through our skin. From sensing temperature and pressure to pleasure or pain, the many nerve endings in our skin tell us a great deal. Our skin can also tell the outside world a great deal about us as well. Wei Gao, Assistant Professor of Medical Engineering has developed an electronic skin, or e-skin, that is applied directly on top of your real skin. "We want this system to be a platform," he says. "In addition to being a wearable biosensor, this can be a human–machine interface. The vital signs and molecular information collected using this platform could be used to design and optimize next-generation prosthetics." [Caltech story]

Tags: research highlights MedE Wei Gao