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Marie Freebody News
Liquid crystals: Size and shape matter
COLLEGE STATION, Texas – When it comes to liquid crystals, scientists at Texas A&M University have discovered that size and shape really matter. Dr. Zhengdong Cheng, an assistant professor of chemical engineering, and his colleagues oriented disk-shaped molecules of...
Stacking ‘Lego’ blocks of light
CALGARY, Alberta, Canada – Many of us enjoyed donning our construction hats and building little houses out of Lego blocks when we were young. Now, researchers at the University of Calgary are playing a similar game, but rather than using Legos, they are stacking light...
Dialing up the laser power
AUSTIN, Texas – Over the past 20 years, physicists have been steadily stepping up the power of lasers from the previously impressive terawatt level to the recently realized petawatt level. Now, researchers at the University of Texas are working toward building the...
Optics in the UK needs government backing for success
Apr 12, 2010 — From Newton’s early research on the composition of light and James Clerk Maxwell’s study of electromagnetism, to John Logie Baird’s patenting of the concept of holey fibers, the history of optics and photonics in the UK is littered...
Time shifts with faster-than-light photons
GAITHERSBURG, Md. – Experiments with faster-than-light photons are highlighting the weird world of quantum tunneling. Researchers at the Joint Quantum Institute (JQI) have boosted single photons to seemingly faster-than-light speeds through a stack of materials by...
Twisted physics
BRISTOL, UK – A group of UK scientists has light theory all tied up in a paper published in the February 2010 issue of Nature Physics. Using lasers under holographic control, Dr. Mark Dennis and fellow physicists at the universities of Bristol, Glasgow and...
X-rays light the way to more nutritious flour
HARPENDEN, UK – Cereals, breads and pasta could be produced from wheat grain containing higher amounts of essential minerals with a little help from x-ray vision. High-intensity x-rays from the world-famous Diamond Light Source synchrotron in Oxford usually are...
Laser pulses reveal contact mechanics
SAPPORO, Japan – The next time you are sitting at your desk full of papers, pens, files and perhaps a coffee mug, take a closer look at the points where these objects meet the desk. What do you see? If you could magnify the nanoscale interface of where the object...
Pragmatic attitude drives machine vision forward
SHANGHAI, China – All eyes will be on China from March 31 to April 2 for the China International Machine Vision Exhibition 2010, which will be held at the Shanghai Exhibition Center. The event coincides with the China International Motion Control and Sensor...
Graphene: The rising star in Raman spectroscopy
BEIJING – With its numerous appealing qualities, including biocompatibility, chemical inertness and abundance, graphene has long been a popular metal among chemists and physicists alike. Thanks to these properties, it has found its way into new applications...
Putting Imaging in the Picture
Feb 28, 2010 — It is now more than 180 years since the first image was captured by Joseph Nicéphore Niépce from an upstairs window on his estate in France using pewter plates and a camera obscura...
Terahertz laser tuning comes down to the wire
CAMBRIDGE, Mass. – The progress of terahertz technology continues its steady march with news of a tunable terahertz laser developed by a group at MIT. Tunable terahertz lasers are particularly use...
White light supercontinuum: Power struggle
LILLE, France – Researchers are pioneering a practical way of generating high-power white light suitable for applications including spectroscopy, microscopy and optical coherence tomography. Produ...
Europe signs on to big x-ray facility
HAMBURG, Germany – Europe soon will boast a multimillion-dollar research facility that promises to open up completely new research opportunities for scientists and industrialists alike. The European X-ray Free Electron Laser (European XFEL), which will be located in...
Pushing light to new limits
ADELAIDE, Australia – Australian researchers are rewriting the rules on how light behaves when confined in ever-smaller optical fibers. Everything has its limits, and light-carrying optical fibers are no exception. Until now, it was thought that, as the size of the...
Fiber laser reaches record length
BIRMINGHAM, UK – In a bid to push the boundaries of laser science, a team of scientists from the UK, Spain and Russia has built the longest-ever fiber laser cavity. The group’s aim was to find out just how long it could make a fiber laser cavity in which lasing with...
Nanocavity brings optical tweezing down to size
SHANGHAI, China – An international team of researchers is taking steps to bridge the gap between nanophotonics and nanomechanics by harnessing the induced near-field force within a nanocavity. Yuchuan Jian at Fudan University and at Duke University in Durham,...
Photonics Is Heating Up in India
Dec 1, 2009 — India is the seventh-largest country by geographical area and the second-most populous in the world. With approximately 1.17 billion people, it is second only to China, which has 1.34 billion. Situated in south Asia, between Pakistan, China and...
Finding Life in Martian Ice
PASADENA, Calif., Nov. 11, 2009 – Doctors with the Kinohi Institute and the University of Innsbruck in Austria devised an imaging technique to detect bacteria in frozen Antarctic lakes, with the ultimate goal of using the technology to identify microbial life in the extreme...
Dimple lens goes beyond the diffraction limit
LOS ANGELES – University of California scientists have created a new type of lens that can focus light down to a sub-100-nm spot. This record-breaking focusing power could open up new areas of research in biological sciences, nonlinear optics and near-field...
Lighting the way to ultrafast microprocessors
MUNICH, Germany – The first milestone toward lightwave electronics has been achieved, thanks to a collaboration among physicists at Max Planck Institute of Quantum Optics in Garching, FOM Institute AMOLF (Institute for Atomic and Molecular Physics) in Amsterdam, the...
Imaging: The big picture
Oct 2, 2009 — The image sensor market has enjoyed phenomenal growth in recent years. According to market analyst Tom Hausken of Strategies Unlimited in Mountain View, Calif., it reached $7.2 billion in 2008 after several years of strong double-digit growth. But...
A closer look at plastic solar cells
Oct 1, 2009 — Plastic solar cells are lightweight, flexible and, most importantly, cheap to make. But so far, these devices lack one thing: efficiency. Now researchers at the University of Washington in Seattle believe that they may have the key to unlocking...
Tunable light source reaches nanoscale milestone
SOUTHAMPTON, UK – In the race to develop ever-smaller and -faster optical devices, researchers have built the first tunable nanoscale light source driven by free electrons. Dubbed the “light-well” by its creators, the novel emitter could one day be used as an on-chip...
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May 2024
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