Archive for December 2007
You are browsing the archives of 2007 December.
Electrically switchable optical vortices
Applying a voltage to a computer-generated hologram recorded in a polymer and liquid crystal composite creates a fast, switchable vortex light beam for advanced applications.
Previous Stories
- Porphyrin and carbon nanotube assemblies in polar solvents
- The physics of phages
- Cryo-electron microscopy of biological nanostructures
- Fermi, Pasta, Ulam, and a mysterious lady
- The highest-energy cosmic rays appear to come from nearby active galactic nuclei
- Asteroid may hit Mars next month
- Novel method for printing high-quality metal wires
- Building the world’s largest optical solar telescope
- Titania photovoltaic cell performance
- Two years in space for Galileo satellite
- Hyperspectral imaging at the speed of light
- Method identifies blazar candidates
- Polarimetry in the mid-infrared: new vistas for SOFIA, NASA’s airborne observatory
- Making smart materials using electroactive polymers and carbon nanotubes
- LOFAR picks up speed
- Diamonds for scalable quantum information systems
- High redshift x-ray galaxy clusters