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Microscopy News
Nanowires Create 'Endless' LED Opportunities
SAN DIEGO, Jan. 4, 2007 -- A long-sought-after semiconducting material synthesized by engineers at the University of California, San Diego (UCSD) may pave the way for an inexpensive kind of light-emitting diode (LED) that could compete with today’s widely used gallium nitride LEDs. The new material: p-type zinc oxide (ZnO) nanowires. “Zinc oxide nanostructures are incredibly well studied because they are so easy to make," said Deli Wang, an electrical and computer engineering professor from UCSD’s Jacobs School of...
Laser-based Process Purifies Carbon Nanotubes
GAITHERSBURG, Md., Jan. 2, 2007 -- Conventional ways of purifying carbon nanotubes -- necessary if they are to be used in the future as ultrastrong fibers, electrical wires in molecular devices or hydrogen fuel cell components -- are expensive processes that often result in some...
A Laser’s Force Dampens Cantilever Action
Jan 1, 2007 — David M. Weld and Aharon Kapitulnik of Stanford University in California recently demonstrated that even low-power lasers pack a punch. Using laser-driven radiation pressure force-feedback, they reduced the effective quality factor and temperature...
A Squirt of Water Writes Waveguides
Jan 1, 2007 — Photonic integrated circuits will surely replace electronic chips in the coming decades, and although simple versions have already entered the commercial mainstream and have earned their own acronyms, more complex and elegant devices exist only on...
Focusing from Infinity to Here, Almost
Jan 1, 2007 — What do cell phone camera users and eyeglass wearers have in common? Both could benefit from recent work by research scientist Hongwen Ren and optics professor Shin-Tson Wu of the University of Central Florida in Orlando, who are developing an...
Forecast for 2007: Nano Gets Big
Jan 1, 2007 — Not long ago, nanometer-scale positioning was a laboratory curiosity. Today, the robust and responsive nanopositioning provided by piezoelectric actuation is more vital than ever in the lab and has become an essential commodity for industries...
Sharp Corners and Kaleidoscopes Lead to Novel Microscopy Techniques
Jan 1, 2007 — Researchers at Harvard Medical School in Boston have developed two microscopy techniques: a near-field method that offers potentially better performance than other superresolution techniques and a “mirror tunnel” approach that promises...
Silicon Nanowires Act as Nanoscale Avalanche Photodetectors
Jan 1, 2007 — Researchers at Harvard University in Cambridge, Mass., have synthesized PIN silicon nanowires with single-crystal structures and uniform diameters that demonstrate potential for use as avalanche photodetectors in integrated photonic systems. The...
Brookhaven Scientists Named American Physical Society Fellows
Dec 29, 2006 — Five scientists at Brookhaven National Laboratory (BNL) on Long Island, N.Y., have been named Fellows of the American Physical Society (APS). Tim Hallman, Chi-Chang Kao, Dmitri Kharzeev, William Morse and Yimei Zhu were elected in recognition of...
Omega Optical: Manufacturing ‘Green’ Optical Filters
BRATTLEBORO, Vt., Dec. 29, 2006 -- Since 1969, Omega Optical has built its technical reputation on defining the state-of-the-art for optical interference filter performance, manufacturing optical filters for scientists and instrument manufacturers worldwide. From biotech to...
Light Fields Mapped Microscopically
SEOUL, South Korea, Dec. 28, 2006 -- Researchers at Seoul National University said they have, for the first time, mapped the orientation of light fields on a microscopic scale, United Press International (UPI) reported recently. PhD candidate Kwang Geol Lee's team built a...
Study: Nanomaterials Could Disperse into Environment
ATLANTA, Dec. 28, 2006 -- Experiments show that a nanomaterial promising for industrial uses also has significant potential to be dispersed in aquatic environments -- especially when natural organic materials are present. When mixed with natural organic matter in water...
Princeton's Suckewer Wins Prize for Laser Research
Dec 27, 2006 — The American Physical Society has named Szymon Suckewer, Princeton University professor of mechanical and aerospace engineering and co-director of the Program in Plasma Science and Technology, as recipient of the 2007 Arthur Schawlow Prize in Laser...
NEMS/MEMS Research Center Gets $2M in Funding
CAMBRIDGE, Mass., December 20, 2006 -- A new, three-year, multi-institution nano- and microelectromechanical systems (NEMS/MEMS) research initiative affiliated with Harvard University’s engineering and applied sciences programs has received over $2 million in funds from DARPA and...
Taking Nanolithography Beyond Semiconductors
UNIVERSITY PARK, Pa., Dec. 18, 2006 -- A chemical patterning process combines molecular self-assembly with traditional lithography to create multifunctional surfaces in precise patterns at the molecular level. It allows scientists to create surfaces with varied chemical functionalities...
Atomic Force Microscope Installed at Synchrotron Site
Dec 14, 2006 — Asylum Research, a Santa Barbara, Calif., manufacturer of atomic force/scanning probe microscopes,announced the recent installation of its MFP-3D atomic force microscopy (AFM) system at the European Synchrotron Radiation Facility (ESRF) in Grenoble,...
Rensselaer Licenses Microscope Technology to Thorlabs
Dec 13, 2006 — An innovative microscope technology invented by researchers at Rensselaer Polytechnic Institute in Troy, N.Y., has been licensed by Thorlabs Inc., a manufacturer of photonics products based in Newton, N.J. The device, called the adaptive scanning...
Butterfly Wing is Template for Photonic Structures
ATLANTA, Dec. 12, 2006 -- By replicating the complex micron- and nanometer-scale photonic structures that help give butterfly wings their color, researchers have demonstrated a new technique that uses biotemplates for fabricating nanoscale structures that could serve as...
Atoms 'Herded' into Pens
HALLE, Germany, Dec. 4, 2006 -- It has long been known that it is possible to confine electrons or atoms in atomic structures in the same way as sheep can be shut in a pen. But physicists have now discovered a strange thing: if the atomic fences have the right shape and the...
Bruker Awards Scholarships at MRS Meeting
BOSTON, Dec. 1, 2006 -- Hsiu-Wen Wang, a geological sciences graduate student at Indiana University (IU), Bloomington, and Christian Long, a doctoral student with the Department of Materials Science and Engineering and the Center for Superconductivity Research at the...
FLUORESCENCE FILTERS
Dec 1, 2006 — A multimedia catalog on CD has been released by Omega Optical Inc. Titled “Precision Optical Filters for Fluorescence Microscopy,” the disc introduces the QuantaMax line of stable, durable, high signal-to-noise sets, and new filter sets for...
Getting to the (Very Small) Point of Imaging
Dec 1, 2006 — Sometimes ideas pan out better than expected. Such is the case with an imaging innovation from the University of Maryland, Baltimore County. Under the direction of assistant professor of chemistry and biochemistry Brian M. Cullum, researchers there...
Imperfect Tapping, Imperfect Image
Dec 1, 2006 — Despite the saying, sometimes you can’t believe it when you see it. Researchers at Université de Technologie de Troyes in France, at the University of Illinois at Urbana-Champaign and at Argonne National Laboratory in Illinois have shown that this...
Light Alters Film’s Degree of Wetness
Dec 1, 2006 — Researchers at Pohang University of Science and Technology in South Korea have developed a film that can become wet or dry upon exposure to different wavelengths of light. Eventually, it could serve as a biosensor, a microfluidic device or an...
Measurement and Manipulation for Nanotechnology
Dec 1, 2006 — Understanding the structure, function and stimulus response of individual molecules and other nanoscale structures is becoming increasingly important in research in all branches of hard sciences, in engineering and in materials development. The...
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July 2024
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