September 24, 2009
The two-day Advanced Electron Microscopy in NanoMedicine Symposium from Friday, Oct. 2—Saturday, Oct. 3 at the California NanoSystems (CNSI) at UCLA brings together researchers from academia and industry to discuss cryo-electron microscopy, or cryoEM, an important new imaging tool with major applications for nanobiology and nanomedicine, particularly for understanding viruses and other macromolecular complexes. Researchers can use cryoEM to visualize a broad range of assemblies and nanometer-scale structures in three dimensions — from molecular to atomic resolution.
Organized by the Electron Imaging Center for Nanomachines (EICN) , a newly established CNSI core lab, the symposium will also serve as a venue for the public unveiling of the top-of-the-line Titan Krios cryoEM and Titan (S)TEM microscopes in the EICN lab.
For more information and to register for the event, visit: http://www.cnsi.ucla.edu/electron-microscopy/
Mai 4, 2009
Researchers at the UCLA (University of California, Los Angeles, US) Henry Samueli School of Engineering and Applied Sciences have developed the serial time-encoded amplified microscopy (STEAM) technology. It is a novel, continuously running camera that enables real-time imaging at a frame rate of more than 6 MHz and a shutter speed of less than 450ps – roughly a thousand times faster than any conventional camera. Keisuke Goda, Kevin Tsia and team leader Bahram Jalali describe a new approach that does not require a traditional CCD (charge-couples device) or CMOS (complementary metal-oxide semiconductor) video camera. The new imager operates by capturing each picture with an ultrashort laser pulse. It then converts each pulse to a serial data stream that resembles the data in a fiber optic network rather than the signal coming out of the camera. Using a technique known as amplified dispersive Fourier transform, these laser pulses, each containing an entire picture, are amplified and simultaneously stretched in time to the point that they are slow enough to be captured with an electronic digitizer. Those cameras could be used for observing high-speed events such as shockwaves, communication between cells, neural activity or laser surgery.