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Laser Charts Green Protein
Green fluorescent proteins (GFP) have replaced many dyes in biological studies because they are non-toxic and, when attached to a gene and inserted into an organism, serve as a bright, glowing confirmation that the gene has hit its target. Obtained originally from a bioluminescent Pacific Ocean jellyfish, the protein has been mutated and engineered to absorb and emit various colors. Now, chemists at the University of California, Berkeley, have discovered the secret to the structural changes the GFP undergoes when it fluoresces. The UC Berkeley chemists used extremely short laser pulses – 20 millionths of a nanosecond, or 20 femtoseconds – to take snapshots of GFP to determine the structural changes it undergoes when it fluoresces. Only a rapid, strobelike laser can freeze atoms vibrating 1...

QDs Improve Medical Imaging
Changes in a living cell that take place over a long period of time are difficult to scrutinize and require high-spatial-resolution imaging. But new research now makes it possible to analyze activitie...
Light Moves Nanostructures
With a bit of leverage, Cornell researchers have used a very tiny beam of light with as little as 1 mW of power to move a silicon structure up to 12 nm. That’s enough to completely switch the optical ...
Light Squeezed Even Tighter
Scientists have proved that light can be squeezed into much tighter spaces than previously thought possible, a breakthrough that could change the world’s thinking on light’s capabilities. Dr. Shahraam...
Capsules Mock Photosynthesis
German chemists report progress toward achieving artificial photosynthesis by packing thousands of similar molecules together to create a tiny capsule, then using a different kind of molecule as a lig...
Finding Life in Martian Ice
With barren ice sheets and freezing winds, Antarctica might seem an unusually sterile and harsh environment in which to look for life. But within the frozen ice caps of its lakes, many fascinating sec...
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Leica DFC345 FX
Leica Microsystems
For detection and documentation of low-light fluorescence signals in live-cell experiments, Leica Microsystems GmbH has added the Leica DFC345 FX to its line of digital cameras. In addition to combini...
Sapphire 488 LP and 561 LP
Coherent
Two new bioinstrumentation lasers from Coherent Inc. deliver high power in a compact package. The Sapphire 488 LP offers 150 mW of continuous-wave output at 488 nm, while the Sapphire 561 LP provides ...
ES10ZE Focus Controller
Prior Scientific
Prior Scientific Inc. has introduced a focus-only control system for modern microscopes. The ES10ZE is suitable for applications involving extended focus or Z-stacking, providing a compact low-cost sy...
SpectroSens Insertion Probe
Stratophase
Stratophase Ltd. has collaborated with the Centre for Process Innovation to develop an insertion probe variant of its SpectroSens system. Enabling real-time monitoring of the bioproduction fermentatio...
Leap Excimer Laser
Coherent
The Leap excimer laser from Coherent Inc. offers a combination of output power, low purchase price and economical operating cost for micromachining applications in microelectronics and medical device ...
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Gulf Fiberoptics Adds New Div.
Gulf Fiberoptics, an Oldsmar, Fla.-based manufacturer of fiber optic products for the medical, industrial and visual illumination markets, has announced that it is adding a new photonics division. The...
Senate Confirms 14th NIST Director
The US Senate recently confirmed Dr. Patrick D. Gallagher as the 14th director of the Commerce Department’s National Institute of Standards and Technology (NIST) by unanimous consent. Gallagher ha...
Bruker Names New Officers
Bruker Corp., a provider of scientific instruments and solutions based in Billerica, Mass., announced that its board appointed Bill Knight as chief operating officer and Brian Monahan as chief financi...
AMD Lasers Forms Alliances
Indianapolis-based AMD Lasers announced strategic partnerships with 1-800-Dentist, Fortune Management and Cetylite Industries, in a move aimed at providing more value for dental professionals that pur...
CDI Awarded Nanotech Patent
Carbon Design Innovations Inc. (CDI) of Burlingame, Calif., has announced that it has received a key technology patent for the fabrication of carbon nanotube devices. US Patent No. 7,601,650 was i...
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BioPhotonics magazine presents the latest global developments and techniques in the photonics industry to those in the medical and biotechnology fields. Photonics, the science of light, has a history of success in solving clinical and research problems in diverse applications through such products and techniques as spectroscopy, lasers, microscopy, imaging and fiber optics.

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