Researchers of Purdue University, West Lafayette, IN, US announced that they have created a new type of invisibility cloak which works for all colors of the visible spectrum. This new technology, based on a tapered optical waveguide, is simpler than previous designs and makes it possible to cloak objects of about 50 microns in diameter – roughly the width of a human hair. „All previous attempts at optical cloaking have involved very complicated nanofabrication of metamaterials containing many elements, which makes it very difficult to cloak large objects,“ said Vladimir Shalaev, Purdue University’s Robert and Anne Burnett Professor of Electrical Engineering. „Here, we showed that if a waveguide is tapered properly it acts like a sophisticated nanostructured material.” Previous experiments with metamaterials have been limited to cloaking regions only a few times larger than the wavelengths of visible light. This findings could lead to advances in e.g. cloaking; powerful “hyperlenses” resulting in microscopes 10 times more powerful than today’s; computers and consumer electronics that use light instead of electronic signals to process information; advanced sensors; and more efficient solar collectors. Findings are detailed in a research paper appearing May, 29 in Physical Review Letters.
From Sunday April 5 to Wednesday April 8, 2009 the Focus on Microscopy (FOM) conference will take place in Krakow, Poland. It is the continuation of a yearly conference series presenting the latest innovations in optical microscopy and its application in biology, medicine and the material sciences. Key subjects are the theory and practice of 3D optical imaging, related 3D image processing, and reporting especially on developments in resolution and imaging modalities. The FOM conference also covers the rapidly advancing fluorescence labeling techniques for the confocal and multiphoton 3D imaging of live- biological-specimens. A technical exhibition will be a special feature of this year’s conference in Krakow.
Upcoming topics will cover:
– Confocal and multiphoton-excitation microscopy
– Novel illumination and detection strategies
– Fluorescence: new labels, fluorescent proteins, quantum dots, single molecule
– Time-resolved fluorescence: FRET, FRAP, FLIM, FCS
– Coherent non-linear microscopy: SHG, THG, SFG, CARS
– Raman, light scattering microscopy
– Multi-dimensional imaging
– Sub-wavelength resolution: near field microscopy, STED, PALM
– Laser manipulation, ablation and microdissection, photoactivation
– Optical tools in genomics, proteomics, phenomics, cytometry
– Magnetic resonance and X-ray microscopy
– Image processing and visualization
– Live cell and whole tissue imaging
The conference will take place at the Jagiellonian University Auditorium Maximum, ul. Krupnicza 35, in the center of Krakow.
Details for registration, abstract submission, deadlines, etc. will soon be available on: