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Microscopy News
For a Real Close-up, a Little Light
Jun 1, 2008 — Researchers from the University of Texas at Austin have shed new light on near-field scanning optical microscopy. Incorporating a nanometer-scale LED in the probe tip of an atomic force microscope, they acquired optical and topographic images of a test pattern at a resolution of 400 and 50 nm, respectively. It is, they say, the first time that apertureless images have been acquired with a light source embedded in a scanning probe tip. Researchers at the University of Texas at Austin have...
From Infinitesimal Seeds, a Mighty (If Tiny) Forest Grows
Jun 1, 2008 — Using chemical vapor deposition, researchers at the University of Wisconsin-Madison have made nanometer-scale lead sulfide wires that sprouted into treelike constructs that could develop into forests of improved photodetectors and highly efficient...
Image-Processing Methods Reconstruct Archival Audio Recordings
Jun 1, 2008 — Point-and-click mp3 files make it hard to appreciate the first attempts to capture sound on glass, wax, tinfoil or even paper. Many of those records, albeit fragile and often noisy, survive. Carl Haber and his colleagues at Lawrence Berkeley...
Laser Sorts Moving Droplets in Lab on a Chip
Jun 1, 2008 — A paper by three physicists from Université Bordeaux I in France describes a new and highly effective method of sorting and routing nanolitre droplets flowing through microchannels. The technique will be useful in chemical microreactors and...
Nanowires Used to Push Solar Efficiency
Jun 1, 2008 — Solar cell design is critical to how efficiently incoming sunlight is transformed into usable electrical energy. Even slight modifications in architecture or material can have meaningful effects. Numerous polymers have been examined for use in...
Olympus Opens Life Sciences Centre
MUNICH -- Olympus Life Science Research Europa GmbH has opened a global Research and Development Centre for Life Sciences. The €15 million facility will focus on furthering in vitro diagnostics, laboratory automation, molecular biology, digital image...
OPTICAL COMPONENTS
Jun 1, 2008 — The “2008 Best Sellers Catalog” from Edmund Optics Inc. features the company’s newest and most popular optical components, as selected by its customers and engineering staff. The 263-page document includes new products such as the TechSpec...
Optical Interferometry Measures the Deflection of Carbon-Based Nanosensors
Jun 1, 2008 — The reduction in size of modern electromechanical systems — from micro (MEMS) to nano (NEMS) — brings with it decreasing dimensions to be tested and characterized. Thus, the sensitivity requirements of the testing device and methodology are...
PicoQuant Establishes Entity in North America
Jun 1, 2008 — In Berlin, PicoQuant GmbH, a provider of diode lasers and time-resolved fluorescence systems, has announced the opening of Photonics North America Inc. in Westfield, Mass. The American branch will provide technical and sales support for PicoQuant’s...
Quantum Dots Created from Carbon Nanotubes
Jun 1, 2008 — Carbon nanotubes are proving useful for sensing applications because they produce a strong Raman signal and make a detectable sound when hit with a laser. Nanotubes fluoresce as well, but not brightly. However, researchers have discovered that...
Simultaneous Ultrafast Framing and Streak Imaging
Jun 1, 2008 — The ability to record framing and streak images simultaneously has long been a requirement in the research fields of electrical discharge, biomedical research and other applications. Early systems incorporating framing and streak cameras were large...
Socks with Nanosilver Could Present Problems
Jun 1, 2008 — The saying “It all comes out in the wash” could take on a whole new meaning as nanoparticles become more common in consumer goods. Using scanning and transmission electron microscopy, Troy M. Benn and Paul K. Westerhoff of Arizona State University...
Through a Lens, Wetly
Jun 1, 2008 — If you want a variable lens in the future, you may have to get wet. That is the hope of several researchers and companies that are working on liquid lenses, devices that use water or another liquid as an optical element. These systems employ a...
Witec Is Building New Headquarters
ULM, Germany -- Optical and scanning probe microscope manufacturer Witec GmbH is building new headquarters, which will include research, production and office facilities. The building will more than double the space available to the company and is expected to be...
Leica MS Buys Bal-Tec
BANNOCKBURN, Ill., May 28, 2008 -- Leica Microsystems Inc. announced it has acquired Liechtenstein, Germany-based Bal-Tec AG, a maker of mechanical and cryo sample preparation equipment for scanning electron microscopy and transmission electron microscopy (TEM). Terms were not...
Beetle Scales Ideal Crystals
SALT LAKE CITY, May 20, 2008 -- The ideal photonic crystal, a diamond-like structure that manipulates visible light, has eluded creation in the lab, but now chemists have discovered that nature has already done the work by forming the iridescent green scales of a beetle from...
Laser Melts Chip Defects
PRINCETON, NJ, May 15, 2008 -- As microchips shrink, even tiny defects in the lines, dots and other shapes etched on them become major barriers to performance. Princeton engineers have now found a way to literally melt away such defects, using a process that could dramatically...
Complicated Pulses Measured
ATLANTA, May 12, 2008 -- A device that reveals spherical aberrations in optical components could help biologists, chemists, and other nonlaser scientists easily measure complicated ultrashort laser pulses. Lasers that emit ultrashort pulses of light are used for...
Light Mapped Through Holes
DELFT, Netherlands, May 9, 2008 -- The question of how light squeezes through small holes has been answered by a research team successful in accurately mapping the process for the first time. The researchers -- Aurele Adam, PhD, and professor Paul Planken of Delft University of...
Solder Bumping Improves Lens
JENA, Germany, May 7, 2008 -- A solder technique used in electronics manufacturing is proving useful in keeping optical device lenses clear and in place when they are used inside a vacuum. When cameras and microscopes are placed in a vacuum, their lenses and prisms, usually...
‘Giant’ Nanoparticles May Offer Improved Performance
May 1, 2008 — Although nanocrystal quantum dots offer a host of advantages and continue to be explored for a range of imaging applications, these tiny optical probes do come with some baggage. They are, for instance, prone to changes in their quantum yield,...
A Simpler Way to Build an Optical Acidity Detector
May 1, 2008 — A team of researchers in Spain has devised a fluorescent surface molecular sensor for the detection of acidity. The sensor could find application in industry, clinical analysis and environmental sampling. The team consisted of researchers from...
Capturing the Colors of a Plastic Bubble
May 1, 2008 — Everyone loves the bright rainbow colors of a soap bubble, and young children often cry when these delicate objects burst. However, Fumiyoshi Ikkai of Nihon L’Oreal KK in Kawasaki, Kanagawa, Japan, now has found a way to capture and preserve this...
Gas-Assisted Embossing and UV Curing Combine to Make Microlens Arrays
May 1, 2008 — Individual microlenses may be small, but a large array of them can have a big impact — and present some big challenges. Because microlens arrays are a key optical component in large-format LCD TVs and elsewhere, there is a need for low-cost and...
High-Quality NSOM Aperture Probes Made More Cheaply
May 1, 2008 — Near-field scanning optical microscopes (NSOM) have not been used widely or routinely because of difficulties producing high-quality probes at a reasonable cost. The technique uses probes with holes so tiny that they produce evanescent waves to...
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April 2024
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