Emmanuel Candes Receives Information Theory Society Paper Award
Emmanuel Candes, Ronald and Maxine Linde Professor of Applied and Computational Mathematics, has garnered the 2008 Information Theory Society Paper Award jointly with Terence Tao and David Donoho. Their ground-breaking papers were cited for independently introducing the new area of compressed sensing, which holds great promise for processing massive amounts of data, and has already had a broad impact on a diverse set of fields, including signal processing, information theory, function approximation, MRI, and radar design.
Changhuei Yang Develops "Microscope on a Chip"
Changhuei Yang, Assistant Professor of Electrical Engineering and Bioengineering, and colleagues have turned science fiction into reality with their development of a super-compact high-resolution microscope, small enough to fit on a finger tip. This "microscopic microscope" operates without lenses but has the magnifyingpower of a top-quality optical microscope, can be used in the field to analyze blood samples for malaria or check water supplies for giardia and other pathogens, and can be mass-produced for around $10. [Caltech Press Release]
Chemistry of Airborne Particulate—Lung Interactions Revealed by Agustin Colussi and Colleagues
Agustin J. Colussi, senior research associate in environmental science and engineering, and colleagues have found that airborne particulates impair the lungs' naturaldefenses against ozone. Their research focused on what happens when air meets the thin layer of antioxidant-rich fluid that covers our lungs, protecting them from ozone, an air pollutant that pervades major cities. "We found new chemistry at the interfaces separating gases from liquids using a technique that continuously monitors the composition of these interfaces," Colussi says. Under normal physiological conditions, ascorbic acid instantly scavenges ozone, generating innocuous byproducts. However, the researchers discovered that when the fluid is acidic, a pathological condition found in asthmatics, ascorbic acid instead reacts with ozone to form potentially harmful compounds called ozonides.