News tagged with beam
'Dark plasmons' transmit energy
Microscopic channels of gold nanoparticles have the ability to transmit electromagnetic energy that starts as light and propagates via "dark plasmons," according to researchers at Rice University.
Feb 09, 2012 |
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Physicists build highly efficient 'no-waste' laser
A team of University of California, San Diego researchers has built the smallest room-temperature nanolaser to date, as well as an even more startling device: a highly efficient, "thresholdless" laser that ...
Feb 08, 2012 |
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ESO team succeeds in linking telescopes at Paranal Observatory into giant VLT
(PhysOrg.com) -- Researchers working as part of the European Southern Observatory (ESO) at the Cerra Paranal Mountain Observatory in the Atacama Desert in Chile, have succeeded in virtually connecting all ...
Feb 06, 2012 |
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Researchers at SLAC test collider closer to creating fully coherent X-rays
(PhysOrg.com) -- Many advanced laser technologies, such as laser spectroscopy, that use precise wavelengths of infrared, visible or ultraviolet laser light could benefit from using X-ray light as well. But ...
Feb 01, 2012 |
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Ultra-fast photodetector and terahertz generator
Photodetectors made from graphene can process and conduct light signals as well as electric signals extremely fast. Within picoseconds the optical stimulation of graphene generates a photocurrent. Until now, ...
Jan 31, 2012 |
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Newer radiation technology improves head and neck cancer patients' long-term quality of life
Patients treated with IMRT for head and neck cancer report an increasingly better quality of life post-treatment when compared to patients receiving other forms of radiation therapy, according to a study presented at the ...
Jan 26, 2012 |
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Brachytherapy reduced death rates in high-risk prostate cancer patients, study finds
Brachytherapy for high-risk prostate cancers patients has historically been considered a less effective modality, but a new study from radiation oncologists at the Kimmel Cancer Center at Jefferson suggests otherwise. A population-based ...
Jan 25, 2012 |
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Using ion beams to detect art forgery
(PhysOrg.com) -- University of Notre Dame nuclear physicists Philippe Collon and Michael Wiescher are using accelerated ion beams to pinpoint the age and origin of material used in pottery, painting, metalwork ...
Jan 20, 2012 |
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MHI develops 12-inch wafer bonding machine capable of producing 3-D integrated LSI circuits at room temperature
Mitsubishi Heavy Industries Ltd (MHI) has developed the world's first fully automated 12-inch (300 millimeters) wafer bonding machine, dubbed the "Bond Meister MWB-12-ST," capable of producing 3-dimensionally integrated LSI ...
Jan 16, 2012 |
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Physicists develop nano-level sound detector
(PhysOrg.com) -- For a couple of decades now, physicists have known that if a very small laser beam is pointed at a microscopic particle, it could be held in place due to the very small electrical field that ...
Jan 12, 2012 |
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Seeing quantum mechanics with the naked eye
(PhysOrg.com) -- A Cambridge team have built a semiconductor chip that converts electrons into a quantum state that emits light but is large enough to see by eye. Because their quantum superfluid is simply ...
Jan 09, 2012 |
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Proton therapy effective prostate cancer treatment
Proton therapy, a type of external beam radiation therapy, is a safe and effective treatment for prostate cancer, according to two new studies published in the January issue of the International Journal of Radiation Oncology•Biology•Physics (Red J ...
Jan 05, 2012 |
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Flipping an egg carton of light traps giant atoms
(PhysOrg.com) -- In an egg carton of laser light, University of Michigan physicists can trap giant Rydberg atoms with up to 90 percent efficiency, an achievement that could advance quantum computing and terahertz ...
Dec 23, 2011 |
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Nanometer-scale growth of cone cells tracked in living human eye
Humans see color thanks to cone cells, specialized light-sensing neurons located in the retina along the inner surface of the eyeball. The actual light-sensing section of these cells is called the outer segment, which is ...
Dec 20, 2011 |
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Advantages and motivations uncertain behind use of brachytherapy for breast cancer radiotherapy
Accelerated partial breast irradiation using brachytherapy (APBIb) for the treatment of breast cancer has been rapidly increasing over the last several years in the U.S. as an alternative to standard whole-breast irradiation ...
Dec 16, 2011 |
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Beam
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