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Research & Technology News
Organic phosphors glow in jewel tones
ANN ARBOR, Mich. – A new class of pure organic compounds that glow in jewel tones could lead to cheaper, more efficient and more flexible display screens, among other applications. Researchers at the University of Michigan developed a class of material that shines with phosphorescence, a property previously seen only in nonorganic compounds and organometallics. The metal-free organic crystals are white in visible light and radiate blue, green, yellow and orange when triggered by ultraviolet light. The col...
Packed atoms boost atomic clock performance
BOULDER, Colo. – JILA scientists have eliminated collisions between atoms in an atomic clock by packing the atoms closer together. The discovery could boost the performance of experimental atomic clocks made of thousands or tens of thousands of neutral atoms trapped...
Photons for quantum computing
GAITHERSBURG, Md. – A reliable source of photons for quantum computers could be a step closer to realization, thanks to scientists at the National Institute of Standards and Technology (NIST) who have found that calculations impossible or impractical to achieve with...
Precise sensor made of hydrogels
WEST LAFAYETTE, Ind. – A new type of biological and chemical sensor made of thin stripes of hydrogel, a gelatinous material that expands and contracts depending upon the acidity of its environment, has been developed by researchers at Purdue University. The sensors,...
QDs Increase Electricity Output of Solar Cells
GOLDEN, Colo., April 1, 2011 — A new study is supporting the multiple-exciton generation (MEG) theory, which speculates that an electron can transfer energy to more than one electron, resulting in more electricity from the same amount of absorbed light. Mark Lusk and...
The RAPID way to next-gen computer chips
COLLEGE PARK, Md. – At the University of Maryland, scientists have achieved a breakthrough in using visible light to make tiny integrated circuits. Although the technology may not become commercially available for more than a decade, it may eventually make it possible...
Near-IR Imaging Refines Robotic Surgery
NEW YORK, March 31, 2011 — A near-infrared fluorescence imaging guided system designed for the da Vinci Si Surgical System was tested this week by the NYU Langone Medical Center, which completed its first surgery this month using the system. The imaging technique provided a...
Simplified Superlens Captures IR Light
BERKELEY, Calif., March 31, 2011 — Superlenses fabricated from perovskite oxides are simpler and easier to fabricate than metamaterials and are ideal for capturing light in the mid-infrared range, potentially opening the door to highly sensitive biomedical detection and imaging, say...
IR Light Activates Heart, Ear Cells
SALT LAKE CITY, March 30, 2011 — By exposing inner-ear cells and heart cells to infrared optical signals, scientists have found that the light actually activates the cells so they can send signals to the brain, a discovery that could lead to optical prosthetics for disorders of...
Seeing Below the Surface
CAMBRIDGE, Mass., March 30, 2011 — A new approach to detecting internal damage in planes and other objects that employs a simple handheld device and heat-sensitive camera promises to replace traditional infrared thermography techniques that require the use of large heaters.
Efficient Single-Photon Sources Move Closer
BRISTOL, England, March 29, 2011 — Fluorescent diamond “defect centers” are being used to create efficient single-photon sources that are expected to enable secure optical communications, also known as quantum cryptography. Defect centers in diamond materials, which...
Light Joins Nanoparticles into New Materials
ARGONNE, Ill., March 29, 2011 — A low-power laser — similar to the common office laser pointer — can cause gold and carbon nanoparticles to assemble into long chains that follow the laser beam as it moves. Researchers from Argonne National Laboratory shined a...
Magnetized Nanorods Diffract Visible Light
RIVERSIDE, Calif., March 29, 2011 — By coating iron oxide nanorods with silica, scientists have found that when they apply a magnetic field, the nanorods align themselves to one another like a set of tiny flashlights, which could have potential for a wide variety of color displays. ...
NASA Tests New Microscope for ISS
CLEVELAND, March 29, 2011 — NASA recently began tests of a new multicapability microscope that is expected to help scientists study the effects of the space environment on physics and biology aboard the International Space Station (ISS). The microscope is isolated from...
Cell Imaging Improves Under Graphene
MANHATTAN, Kan., March 28, 2011 — A microscopic cloak made of graphene could change the way bacteria and other cells are imaged. Vikas Berry of Kansas State University and his research team are wrapping bacteria with graphene to address challenges with imaging bacteria under...
Photodynamic Therapy Treats HPV Nonsurgically
CAMBRIDGE, Mass., March 28, 2011 — A nonsurgical photodynamic therapy (PDT) procedure is being developed to destroy tissue infected by human papilloma virus (HPV) and treat precancerous lesions on the cervix without damaging healthy tissue. Unlike previous applications of PDT...
Synchrotron-Based Tissue Imaging
MILWAUKEE, March 28, 2011 — With intensity a million times brighter than sunlight, a new synchrotron-based imaging technique offers high-resolution pictures of the molecular composition of tissues with unprecedented speed and quality. Carol Hirschmugl, a physicist at the...
Tabletop Accelerator Successfully Simulated
BERKELEY, Calif., March 28, 2011 — Full 3-D simulations of a tabletop laser-plasma wakefield accelerator were achieved in just a few hours of supercomputing time. As conventional accelerators like CERN’s Large Hadron Collider grow ever more vast and expensive, the best hope for...
M-GRIN Aims to Simplify Specialized Optics
ARLINGTON, Va., March 24, 2011 — Advances in the design and fabrication of gradient index (GRIN) optics are leading to smaller, less complex optical assemblies and lower manufacturing costs for specialized optics. “In the past century, every component of an optical...
BU, UC Davis Launch Biophotonics Center
BOSTON, March 23, 2011 — A new research collaboration will be formed by Boston University and the University of California, Davis, under a grant from the National Science Foundation that fosters university-industry collaboration. The new Center for Biophotonic Sensors and...
Camera as Small as a Grain of Salt Built
BERLIN, March 23, 2011 — A microcamera for endoscopy applications developed by a German collaboration promises to be so inexpensive as to be disposable. Endoscopy has gone through amazing advancements in recent years. Microcameras on the tip of endoscopes supply...
Light Used to Move Molecules
BALTIMORE, March 23, 2011 — Light-triggered chemistry can help move individual molecules around inside living cells, sending them to exact locations at precise times. This new tool, according to its developers at Johns Hopkins University, will allow visualization of how...
Protein in Ancient Reptile Skin Imaged
MANCHESTER, England, March 23, 2011 — A nondestructive infrared imaging technique has exposed organic compounds (amides) surviving in 50-million-year-old fossilized reptile skin, revealing intricate chemical patterning that previous methods had overlooked. Produced by University of...
Silencing a Gene: It’s a Stretch
TUCSON, Ariz., March 23, 2011 — Cells may control genes by simply stretching them, a discovery that could pave the way for applications that require precise control over gene expression, such as with a lab-on-a-chip device.
3-D Knotted Optical Traps Created
NEW YORK, March 22, 2011 — A new technique creates extended and knotted 3-D optical traps that produce “bright” knots. The maximum of the light intensity traces out a knotted trajectory in space, allowing microscopic objects to be trapped along the path of the...
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