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(9,096 items)
Research & Technology News
Probing microscopy technique produces green solar cells
PITTSBURGH – A new microscopy technique will help engineers peer more closely inside plastic cells to predict a new way to make them more energy-efficient. Most plastic solar cells today are made from a blend of semiconducting polymers and other carbon-rich molecules to form bulk heterojunctions, said Guangyong Li, assistant professor of electrical and computer engineering at the University of Pittsburgh. Although the material costs very little and is usable, it does not assist with energy efficiency &nda...
Laser-Guided Bullet Hits Target a Mile Away
ALBUQUERQUE, N.M, Jan. 31, 2012 — A new dart-like, self-guided bullet that can hit laser-designated targets more than a mile away could help war fighters.
Innovative Light Source Developed
WÜRZBURG, Germany, Jan. 30, 2012 — Significant progress in the fabrication of light sources that emit single particles of light has been made. A collaboration of German physicists has developed tiny components that could ensure that data is no longer “fished for” during transmission...
2011 Prism Award Winners Announced
SAN FRANCISCO, Jan. 26, 2012 — Amplitude Systèmes, PD-LD and 89 North were among nine winners of Prism Awards for photonics innovation announced by Photonics Media and SPIE at a gala banquet Wednesday night during Photonics West. The fourth annual Prism Awards honored 28...
Cooling by Laser Light
COPENHAGEN, Denmark, Jan. 25, 2012 — Using lasers, scientists have developed a novel method to cool semiconductor membrane fluctuations to –269 °C. The technique could pave the way to developing more efficient cooling systems for future ultrasensitive sensors and quantum computers.
Linac Creates 2-Million-Degree Matter
MENLO PARK, Calif., Jan. 25, 2012 — A 2-million-degree piece of “hot, dense matter” was created and probed in a controlled way for the first time using the SLAC's Linac Coherent Light Source. This feat takes scientists a significant step forward in understanding the most extreme...
Transparency Limits on Conducting Oxides Identified
SANTA BARBARA, Calif., Jan. 25, 2012 — Scientists at the University of California, Santa Barbara, have used tin dioxide (SnO2) to uncover the fundamental limitations of optical transparency in conducting oxides. The finding could lead to more energy-efficient photovoltaics, LEDs and LCD...
Biochip Measures Glucose in Saliva, Not Blood
PROVIDENCE, R.I., Jan. 24, 2012 — For the 26 million Americans with diabetes, drawing blood, which is invasive and at least minimally painful, is the most prevalent method of checking glucose levels. Now researchers at Brown University are working on a new biological device that...
T-rays to Enable Tricorder?
LONDON, Jan. 25, 2012 — A new technique to create electromagnetic Terahertz waves (T-rays) — the technology used for full-body security scanners — could one day lead to the development of a Star Trek ‘tricorder’-inspired handheld scanner suitable for better medical...
Carbon Fibers Turned into Graphene Quantum Dots
HOUSTON, Jan. 18, 2012 — Common carbon fiber can be turned into graphene quantum dots in a one-step chemical process much simpler than established techniques for making the semiconducting nanocrystals. This discovery could prove useful in optical, biomedical and electronic...
Light Now in Sight
MUNICH, Jan. 17, 2012 — Ludwig Maximilian University of Munich (LMU) chemist Dirk Trauner received a European Research Council (ERC) Advanced Grant for a project based on optochemical genetics. The project’s innovative approach can create artificial photoreceptors by...
Optical Nanoantennas Enable Multipurpose Particle Manipulation
URBANA, Ill., Jan. 16, 2012 — By tuning the properties of laser light illuminating arrays of metal nanoantennas, researchers have shown that these nanoscale structures enable dexterous optical tweezing and size-sorting of particles. In work conducted at the University of...
Growth of Nerve Fiber Directed
ARLINGTON, Texas, & IRVINE, Calif., Jan. 13, 2012 — Laser-driven spinning microparticles can direct the growth of nerve fiber. This discovery that could enable the growth of neuronal networks on a chip and improve methods for treating spinal or brain injuries. The study, which appeared in the...
New Diode Opens Door to Optical Info Processing
WEST LAFAYETTE, Ind., Jan. 12, 2012 — A new type of optical device that is small enough to fit millions on a computer chip could lead to faster, more powerful information processing and supercomputers. The “passive optical diode” developed by scientists in the Birck...
Device Spots Deadly Melanoma, Cell by Cell
COLUMBIA, Mo., Jan. 11, 2012 — A tool based on laser-induced ultrasound technology can detect single melanoma cells in a blood sample at a fraction of the cost of current cancer tests. A prototype developed at the University of Missouri’s Bond Life Sciences Center is now poised...
Seeing Quantum Mechanics with the Naked Eye
CAMBRIDGE, England, Jan. 11, 2012 — A new semiconductor chip converts electrons into a quantum, light-emitting state, yet is large enough to see by the naked eye, a development that could lead to a new generation of ultrasensitive gyroscopes.
Superlens Nears Development, in Theory
HOUGHTON, Mich., Jan. 11, 2012 — Using surface plasmons, metamaterials can be stretched to refract lightwaves from the infrared, visible and ultraviolet wavelengths, a model created at Michigan Technological University suggests. Such materials could be used to build superlenses so...
Time Bandits: Temporal Cloaking Hides Events
ITHACA, N.Y., Jan. 11, 2012 — A new "time cloak" technique is a step toward the development of spatio-temporal cloaking, say engineers at Cornell University. The optical-fiber based system uses a split-time lens to break light into its slower and faster components, creating a...
High-Speed CMOS Sensors Provide Better Images
DUISBURG, Germany, Jan. 5, 2012 — A patented lateral drift field photodetector (LDPD) that boosts the speed of traditional CMOS sensors now can produce better-quality images for low-light applications such as spectroscopy, astronomy and x-ray photography. Certain CMOS...
Semiconductors Etch Easier with New Method
CHAMPAIGN, Ill., Jan. 4, 2012 — A method that chemically etches patterned arrays in the semiconductor gallium arsenide will make high-end optoelectronic devices easier to create. A team of researchers led by Xiuling Li, an electrical and computer engineering professor at the...
‘Plasmonic Nanoantennas’ Promising for Optics
WEST LAFAYETTE, Ind., Jan. 3, 2012 — Arrays of tiny “plasmonic nanoantennas” have been developed that can precisely manipulate light in new ways, potentially enabling optical innovations such as more powerful microscopes, computers and telecommunications. Researchers...
Chemically assembled metamaterials pave way for superlenses
ITHACA, N.Y. – A new metamaterial can self-assemble 3-D structures with nanoscale features, a feat that could make “superlenses” to image proteins, DNA and viruses. Metamaterials offer new ways to manipulate light via negative refractive indices...
Compact laser frequency comb could go places
GAITHERSBURG, Md. – A new compact laser frequency comb is no larger than a shoebox and has a high-quality optical cavity just 2 mm wide. Until now, frequency combs have been delicate lab instruments, bulky – about the size of a suitcase – and challenging to...
Lasers give rise to spider robots for dangerous missions
STUTTGART, Germany – Chemical spill? Gas leak? Mine collapse? Send in the spiders. Laser-based 3-D printing can help fabricate mobile robot spiders that can explore environments considered unreachable by or too hazardous for humans. The prototype robot,...
People warm to white light from four-color diode lasers
ALBUQUERQUE, N.M. – Step aside LEDs, there’s a new light source in town. A new four-color laser source can produce high-quality white light that is appealing to the human eye. LEDs – widely accepted as sturdier, more efficient replacements for...
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