Topics in this Issue
Divergent beam images of colloidal crystals taken through an optical microscope. The threefold symmetry of a face-centered cubic crystal can be seen in the lower right image. In the other three images, the arrays of fine lines arise from Bragg rods related to the random hexagonal close-packed structure common to hard sphere colloids. When these rods are tilted with respect to the optical axis of the microscope, the images take on a "string art" appearance as seen in the upper right and lower left images, Images such as these can be used to extract crystallographic data from colloidal crystals. The arrows in the upper left image mark examples of Kossel pairs that are used for data extraction. For further details see the paper by Rogers and Lagerlöf, pp. 1867-1879.
- Mar 12 2015 : Optica Research - Engineers Create Chameleon-like Artificial 'Skin’ That Shifts Color on Demand
- Mar 05 2015 : Optical Materials Express Research - New Flexible Films for Touch Screen Applications Achieve Longer Lasting Display
- Jan 26 2015 : Optica Research - Entanglement on a Chip: Breakthrough Promises Secure Communications and Faster Computers
- Jan 23 2015 : OSA Welcomes New Editor of Applied Optics
- Real-time, high-accuracy 3D imaging and shape measurement
- Optical properties of metallic films for vertical-cavity...
- Laser Beams and Resonators
- Two-dimensional continuous wavelet transform for phase...
- What is a Hartmann test?
- Advances in three-dimensional integral imaging: sensing,...
- Parameter discretization in two-dimensional continuous...
- Optical properties of the metals Al, Co, Cu, Au, Fe, Pb,...
- Compressive sensing in the EO/IR
- Phase retrieval algorithms: a comparison