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(9,096 items)
Research & Technology News
Lab lightning strikes same place more than twice
PALAISEAU, France – With the help of a laser-based lightning rod, laboratory-generated lightning was coaxed to strike the same place not just twice but numerous times, and contrary to the path of least resistance. This advance demonstrates the potential of such rods for research and protection. In earlier experiments, femtosecond lasers were used to produce a virtual lightning rod from ultrashort filaments of ionized gas that act as electrical guide wires. Now, for the first time, researchers in France have...
Microlens arrays from a test tube
POTSDAM, Germany – Simple calcium carbonate precipitation at ambient conditions can produce microlens arrays of uniform size and focal length. The process offers a cheaper alternative to lithographic techniques used to create inorganic-based materials. Scientists...
Nanomaterial Yields Many Laser Colors
PROVIDENCE, R.I., May 1, 2012 — Nanocrystals that can produce red, green and blue laser light from a single material could open the door to digital displays and other devices that employ a variety of laser colors all at once.
Random Lasers Fight Noise, Improve Imaging
NEW HAVEN, Conn., May 1, 2012 — A new random laser illumination source for medical imaging equipment could improve the clarity and processing time of images, advancing the fields of microscopy and endoscopy.
Star comb aids search for exoplanets
BOULDER, Colo. – A new laser frequency comb soon may be able to answer one of the most intriguing scientific questions: Are there other earthlike planets in our galaxy capable of supporting life as we know it? A collaboration of the National Institute of...
Supercapacitors created from laser-scribed graphene
LOS ANGELES – A novel graphene-based electrode, produced with a standard LightScribe DVD optical drive, ends the search for an optimal electrochemical capacitor. The discovery could pave the way for a new class of flexible energy-storage devices. ...
Tsunami mapped with laser scanners
SENDAI, Japan – Using eyewitness video and terrestrial lasers to map the epic March 2011 Tohoku tsunami could produce flooding forecasts that influence future evacuation plans and building designs and could help prevent disasters of similar magnitude from taking...
Portable Probe Aims to Speed Oral Cancer Diagnosis
AUSTIN, Texas, April 30, 2012 — A new portable, miniature microscope could reduce the time it takes to diagnose oral cancer.
Webb Telescope Tech Spinning Off
GREENBELT, Md., April 30, 2012 — A stitching technique that improves large asphere measurement and wavefront sensing for the measurement of eye health are among four commercial applications to have spun off new technologies developed for NASA’s James Webb Space Telescope.
3-D Tissue Imaging Improved via Adaptive Optics
CHAMPAIGN, Ill., April 27, 2012 — Real-time, 3-D microscopic tissue imaging could bring the future of medical imaging into focus through a new technique that computationally corrects for aberrations in optical tomography. Precision is vital in medical imaging, where imperfect images...
Conductive Nanofibers Self-Organize Under Light
STRASBOURG, France, April 27, 2012 — New flexible nanofibers that can self-assemble under a flash of light combine the best advantages of two materials currently used to conduct electric current: metals and plastic organic polymers. The nanofibers can be integrated into electronic...
Liquid Solar Cells Could Be Painted on Surfaces
LOS ANGELES, April 27, 2012 — An inexpensively producible, stable solar cell made from small nanocrystals suspended in a liquid solution can be printed or painted onto clear surfaces. The new technology holds potential for flexible solar panels that can be shaped to fit anywhere.
Material’s Structure Hints at More Efficient Solar Cell
UPTON, N.Y., April 27, 2012 — New details about the structure of one of the most efficient photovoltaic materials could inform the synthesis of new materials with even better properties.
Mock Mars Mission Tests Camera Design
TUCSON, Ariz., April 27, 2012 — The viability of a multiple-camera system designed for future NASA space vehicles was subject of a two-week simulated mission to Mars by five engineering students from the University of Arizona. As part of the Interdisciplinary Engineering Design...
New Candidates Sought for Metamaterial Conductors
AMES, Iowa, April 26, 2012 — A new method that evaluates different conductors for use in metamaterial structures could bring closer to reality super-efficient solar energy devices and superlenses that allow us to use visible light to see molecules like DNA.
Utah Students’ QDs Win Regional Cleantech Challenge
SALT LAKE CITY, April 26, 2012 — Students at the University of Utah recently won $100,000 and first place in the regional CU Cleantech New Venture Challenge for their quantum dot technology.
Coupling Microlasers Leads to ’Blackout’
VIENNA, April 25, 2012 — By coupling two microlasers together, one would expect more light to be emitted than from a single pumped laser alone. But coupling such lasers can, paradoxically, lead to a "blackout" where they shut each other off.
Femtolaser ‘Scalpel’ Spares Surrounding Tissue
AUSTIN, Texas, April 25, 2012 — A small, flexible endoscopic medical device fitted with a femtosecond laser “scalpel” can remove diseased or damaged tissue while leaving healthy cells untouched.
Single-Neuron Observations Reveal Alzheimer Stages
MUNICH, April 25, 2012 — Alzheimer-related changes in the visual cortex have been observed at the single-cell level using two-photon calcium imaging. These changes could reveal distinct stages in Alzheimer’s disease with a specific order in time.
LED-like Solar Cell Absorbs, Emits Light
BERKELEY, Calif., April 24, 2012 — A solar cell designed to be more like an LED — able to emit light as well as absorb it — could achieve efficiencies close to 30 percent, engineers at UC Berkeley report.
Protective Polymers Pave Way for Plastic Solar Cell
ATLANTA, April 24, 2012 — What appears to be a new universal technique to decrease the work function of a conductor in printable electronics has led to the development of the first completely plastic solar cell.
New X-ray Scope Reveals 3-D Nanostructures
UPTON, N.Y., April 23, 2012 — A new full field transmission x-ray microscope now makes it possible to rapidly capture and integrate thousands of two-dimensional images to create digital three-dimensional constructs with high accuracy. The direct observation of structures...
Optical, Electronic Properties of Metal Oxides Tuned
BINGHAMTON, N.Y., April 23, 2012 — Tuning the optical and electronic properties of metal oxides at the atomic level by creating a superlattice “sandwich” now makes it possible to harness the sunlight's energy. The discovery could lead to applications in fuel cells, touchscreen...
Cell Phones that See Through Walls?
DALLAS, April 20, 2012 — Improvements in microchip technology and new scientific advances that let scientists tap into the terahertz range could lead to mobile phones that can be used to see through walls, wood, plastics, paper and other opaque materials. The terahertz...
Lasers Can Improve Hearing
HANNOVER, Germany, April 20, 2012 — New technologies to improve the insertion techniques and exact fitting of cochlear implants in the inner ear could soon provide better-quality residual hearing for more than 200,000 hard-of-hearing people worldwide.
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