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Noise-Canceling Optics

10-10-16

Changhuei Yang, Professor of Electrical Engineering, Bioengineering, and Medical Engineering, and colleagues have created the visual analogue of noise-canceling headphones—a camera system that can obtain images of objects obscured by murky media, such as fog or clouds, by canceling out the glare. Their device selectively cancels the scattered light, leaving only the light that is reflected or bounced off the objects and has slipped back through the murk unmolested. [Caltech story]

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Roarke Horstmeyer Wins Charles Wilts Prize

06-07-16

Roarke Horstmeyer, advised by Professor Changhuei Yang is the winner of this year’s Charles Wilts Prize, for his doctoral thesis “Computational microscopy: turning megapixels into gigapixels.” The Charles Wilts Prize is awarded every year to a graduate student in Electrical Engineering for outstanding independent research.

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Popping Microbubbles Help Focus Light Inside the Body

12-03-15

Changhuei Yang, Professor of Electrical Engineering, Bioengineering, and Medical Engineering, and his postdoctoral colleague Dr. Haowen Ruan have developed a novel technique called time-reversed ultrasound microbubble encoded (TRUME) that uses gas-filled microbubbles to focus light inside tissue. "Ultrasound and X-ray techniques can only detect cancer after it forms a mass," Yang says. "But with optical focusing, you could catch cancerous cells while they are undergoing biochemical changes but before they undergo morphological changes." [Caltech story]

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Student Research in Biomedical Optics Wins First Place

07-02-15

Electrical Engineering postdoctoral scholar Dr. Haowen Ruan and graduate student Mooseok Jang, who work with Professor Changhuei Yang, have won first place for Best Student Poster Presentation at the Engineering Conferences International (ECI) series entitled “Advances in Optics in Biotechnology, Medicine and Surgery XIV.” Their winning poster demonstrated research in biomedical optics, specifically a novel technique that focuses light inside biological tissue by time-reversing the light encoded through popping of a microbubble. The technique has the potential to enable one to “see” through biological bodies with light.

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Pushing Microscopy Beyond Standard Limits

07-29-13

Changhuei Yang, Professor of Electrical Engineering and Bioengineering, and colleagues have shown how to make cost-effective, ultra-high-performance microscopes. The final images produced by their new system contain 100 times more information than those produced by conventional microscope platforms. And building upon a conventional microscope, their new system costs only about $200 to implement. This new method could have wide applications not only in digital pathology but also in everything from hematology to wafer inspection to forensic photography. [Caltech Release]

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Seeing Inside Tissue

06-26-12

Changhuei Yang, Professor of Electrical Engineering and Bioengineering, and colleagues Ying Min Wang and Benjamin Judkewitz have developed a new method to focus light inside biological tissue. "It enables the possibilities of doing incision-less surgery," says Professor Yang. "By generating a tight laser-focus spot deep in tissue, we can potentially use that as a laser scalpel that leaves the skin unharmed." [Caltech Press Release]

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Caltech Engineers Build Smart Petri Dish

10-04-11

Electrical engineering graduate student Guoan Zheng, working with Professor Changhuei Yang and Professor Michael Elowitz, has built a platform for a "smart" petri dish, dubbed ePetri. "Our ePetri dish is a compact, small, lens-free microscopy imaging platform. We can directly track the cell culture or bacteria culture within the incubator," explains Zheng, "the data from the ePetri dish automatically transfers to a computer outside the incubator by a cable connection... this technology can significantly streamline and improve cell culture experiments by cutting down on human labor and contamination risks." [Caltech Press Release]

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Guoan Zheng Wins $30,000 Lemelson-MIT Caltech Student Prize

03-11-11

Guoan Zheng, a graduate student in Electrical Engineering working with Professor Changhuei Yang, is the winner of this year's $30,000 Lemelson-MIT Caltech Student Prize.  He was awarded the prize for his innovative development of an on-chip, inexpensive microscopy imaging technology with many potential applications, including improved diagnostics for malaria and other blood-borne diseases in the developing world. [Press Coverage]

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Professor Yang Receives 2010 NIH Director's New Innovator Award

10-06-10

Changhuei Yang, Associate Professor of Electrical Engineering and Bioengineering, is a 2010 NIH Director's New Innovator Award recipient. The award helps new investigators take exceptional and innovative research ideas to the next level. Professor Yang and his research team will be using the grant associated with the award to investigate a new research direction in biophotonics—the study of the interaction of time-reversed light with biological structures. [Caltech Press Release]

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Professor Yang Selected as a 2010 NIH Director's New Innovator

08-24-10

Congratulations to Changhuei Yang, Associate Professor of Electrical Engineering and Bioengineering on being selected as a 2010 NIH Director's New Innovator. As part of NIH's commitment to increasing opportunities for new scientists, it has created the NIH Director's New Innovator Award to support exceptionally creative new investigators who propose highly innovative projects that have the potential for unusually high impact.

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