Researchers bridge the 'terahertz gap' with new tunable metamaterial
... metamaterials beyond their fixed point on the electromagnetic
spectrum, an advance that opens these novel ... the range of material responses to waves of electromagnetic
radiation classified by increasing frequency as ... Metamaterials gave us access to new regimes of electromagnetic
response that you could not get from normal ...
MIT: Remote-control nanoparticles deliver drugs directly into tumors
... nanoparticles that, when pulsed with an electromagnetic
field, release drugs to attack tumors. The ...
Exposing the particles to a low-frequency electromagnetic
field causes the particles to radiate heat that, ... by applying different frequencies or durations of electromagnetic
To test the particles, the researchers ...
DOE-funded research projects win 46 R&D 100 Awards for 2009
Geological Mapper The first commercially available technology for 3-D geophysical imaging of industrial-sized electromagnetic
data. This technology offers oceanic subsurface mapping at a scale and ...
Toxic molecule may help birds 'see' north and south
... of electrons. These spins behave like an axial compass."
Changes in the electromagnetic
field, such as those experienced by a bird changing direction in flight, ... cryptochrome in their eyes, do not have the same ability to see Earth's electromagnetic
field, Schulten said.
"Our bodies try to play it safe," he said. "It ...
Millisecond brain signals predict response to fast-acting antidepressant
... Images of the brain's fastest signals reveal an electromagnetic
marker that predicts a patient's response to a fast-acting antidepressant, ... (MEG). This imaging technology can non-invasively detect brain electromagnetic
activity lasting only milliseconds the speed of communications in neural ...
European light research opens door for optical storage and computing
The phenomenon of fast and slow light arises from the dispersion of electromagnetic
waves when they interact with, and travel through, a physical medium such ... have the potential for developing purely optical devices using just electromagnetic
radiation, rather than electrical signals, to store and process ...
Using ground-penetrating radar to observe hidden underground water processes
... water-related questions. GPR is based on the transmission and reception of electromagnetic
waves into the ground, whose propagation velocity and signal strength is determined by the soil electromagnetic
properties and spatial distribution. As the electric permittivity of water ...
Restoring sight, advances in fertility treatments and better visibility for pilots at FIO
... light itself, interesting entities known as plasmons may be created. An electromagnetic
phenomenon like light itself, the plasmons are waves of electrons that ... artificial, multidimensional, periodic structures that are intended for electromagnetic
waves. Such nanophotonic structures are now being designed and used in ...
A research work will be the reference to characterize the climatic impact of desert dust
... characteristics of such aerosol in every moment".
This technique is very similar to a radar, says the researcher, "as it consists in emitting an electromagnetic
radiation, in this case laser light, which propagates in the atmosphere, interacts with the particles in suspension and afterwards, collects the ...
NASA uses satellite to unearth innovation in crop forecasting
... crops and grasses to detect the amount of soil moisture beneath Earth's surface.
AMSR-E uses varying frequencies to detect the amount of emitted electromagnetic
radiation from the Earth's surface. Within the microwave spectrum, this radiation is closely related to the amount of water that is in the soil, ...
Tension in the nanoworld
... yielding nanoscale resolved images at visible, infrared and terahertz frequencies. The s-SNOM thus breaks the diffraction barrier throughout the electromagnetic
spectrum and with its 20 nm resolving power matches the needs of modern nanoscience and technology.
Now, the research team has provided first ...
Electromagnetic phantom exorcises specters of metal detector tests
... crimefighter who protected the innocent from pirates, hijackers and other evildoers. While not as dashing or exciting as its costumed namesake, this electromagnetic
phantoma carbon and polymer mixture that simulates the human bodyis being readied by the National Institute of Standards and Technology (NIST) for ...
Halas wins high-profile national security award
... Bending Light in New Directions," encompasses a major, comprehensive research program designed to broaden and redefine the capabilities of engineered electromagnetic
nanomaterials that interact with both infrared and visible light. Breakthroughs in the field could form the basis for everything from super-efficient ...
NIST awards $24M in grants for new research facilities
... Hall, a research building scheduled to begin construction on the UC Berkeley campus. The facility will offer a low-vibration environment, low electromagnetic
radiation interference, low acoustic noise, and temperature stability unmatched by other facilities at the university. The NIST funding will enable ...
AGU journal highlights -- Oct. 16, 2008
... the Arctic's Transpolar Drift, a current that carries ice from Siberia across the North Pole to the east coast of Greenland. Through helicopter-borne electromagnetic
measurements, the authors calculate sea ice thicknesses over the Transpolar Drift during the late summers of 2001, 2004, and 2007, adding to a ...
MIT: Preventing forest fires with tree power
... http://en.wikipedia.org/wiki/Lemon_battery ). The team also ruled out the source as due to coupling to underground power lines, radio waves or other electromagnetic
Testing of the wireless sensor network, which is being developed by Voltree Power ( http://voltreepower.com ), is slated to begin in ...
Story tips from the Department of Energy's Oak Ridge National Laboratory, September 2008
... Predrag S. Krstic of ORNL's Physics Division will use a nanoscale quadrupole Paul trap, a component of a mass spectrometer that captures ions in an electromagnetic
field, to develop a high speed DNA sequencing device. Using the Paul trap to manipulate DNA between nanotube electrodes could result in a lower cost ...
Seeing through the skin
... or near-weightless mechanisms to steer spaceships to stars beyond our own galaxy.
Traditional imaging lenses only work within a limited range of electromagnetic
radiation. They are still very costly, limited by weight and field of view. Requiring no lenses, optics-less imaging devices could be adapted to any ...
Air-purifying church windows early nanotechnology
... are not good for your health, even in small amounts," he said.
"Gold, when in very small particles, becomes very active under sunlight.
field of the sunlight can couple with the oscillations of the electrons in the gold particles and creates a resonance.
"The magnetic field on the ...
Keeping an eye on the surroundings
... used a spectroscopic technique called KITA (kinetic terahertz absorption) to make their observations.
Terahertz (THz) radiation consists of electromagnetic
waves in the submillimeter range, putting it between the infrared and microwave ranges. Efficient sources of THz radiation are now available, making ...
Europe gets together to harness quantum physics
... The idea is that ions, which are atoms or molecules that have lost or gained electrons from their outer shells, are suspended in free form in an electromagnetic
field so that their energy levels can be manipulated precisely, down to the level of individual quanta. This could potentially be exploited to store ...
NASA presentations at American Geophysical Union Joint Assembly
... May 29, 8:30AM EDT, Hall A
Instruments onboard the International Space Station provide unique measurements about the station's electromagnetic
charge and the immediate space weather environment. Researchers will discuss how they will use these instruments, now validated, for scientific space ...
Archaeologist uses satellite imagery to explore ancient Mexico
... student Justin Kwon in RITs Chester F. Carlson Center for Imaging Science to analyze the large amounts of data taken at different wavelengths of the electromagnetic
spectrum. Their own research uses similar techniques to analyze urban landscapes, and inspired Middleton to apply the technology to archeological ...
Prototype terahertz imager promises biochem advances
... of chemical hazards for homeland security instruments.
Terahertz radiation falls between microwaves and infrared radiation on the electromagnetic
spectrum, with frequencies from about 300 million cycles per second to about 3 trillion cycles per second. Biological and chemical samples naturally ...
New radar satellite technique sheds light on ocean current dynamics
... and quantify surface currents had proven very difficult.
By using the new information embedded in the radar signal the Doppler shift of the electromagnetic
waves reflected from the water surface Dr Bertrand Chapron of the French Research Institute for Exploitation of the Sea (IFREMER), Dr Johnny ...
Biophysical Society announces 2008 International Travel Awards
... in the Catalytic Mechanism of dUTPase.
Armen Trchounian, Yerevan State University, Armenia, Role of the F0F1-ATPase in Bacterial Effects of electromagnetic
Irradiation with Extremely High Freguency and Low Intensity.
Kyrylo Tron, University of Ulm, Germany, Quantitative Characterization of ...
Micro microwave does pinpoint cooking for miniaturized labs
... of how microwave energy is absorbed by fluids, the research team developed a model to explain how their minature oven would work. They predicted that electromagnetic
fields localized in the gap would directly heat the fluid in a selected portion of the micro channel while leaving the surrounding area unaffected. ...
New field-deployable biosensor detects avian influenza virus in minutes instead of days
... and mechanical motion. Non-specific binding should occur equally to both the test and reference channels and thus not affect the test results.
field associated with the light beams extends above the waveguides and is very sensitive to the changes caused by antibody-antigen interactions on ...
T-ray breakthrough could make detecting disease far easier
... A breakthrough in the harnessing of 'T-rays' - electromagnetic
terahertz waves - which could dramatically ... between the microwave and infrared parts of the electromagnetic
Materials interact with radiation ... have distinctive signatures in this part of the electromagnetic
T-ray applications are presently ...
Cell phone emissions excite the brain cortex
fields from cell phones excite the brain cortex ... people in the world use cell phones which emit electromagnetic
fields (EMFs). Though many studies have looked at ... to investigate brain function under exposure to electromagnetic
fields from a common type of cell phone. Their ...
Terahertz imaging may reduce breast cancer surgeries
Researchers used light waves in a newly explored region of the electromagnetic
spectrum--the terahertz region--to examine excised breast tissue and ... light is located between the infrared and microwave portions of the electromagnetic
spectrum. The researchers found that by placing a slice of excised breast ...
Superconducting magnet attracts molecular research
... within the atom have an intrinsic property known as "spin" and within the electromagnetic
field created by the magnet, the frequency of the spinning motion of the ... of biological molecules in solution. The average hospital-based MRI has an electromagnetic
field of about 7 Tesla, while this superconducting magnet is more than ...
Polymers show promise for lab-on-a-chip technology
... Computer Engineering and the first author of the paper.
LCPs are often described as "artificial muscles" that can convert thermal, chemical and electromagnetic
stimuli into mechanical energy, Elias said. LCPs are polymers made from liquid crystalline molecules, which are well-known for their use in display ...
Rare Chinese frogs communicate by means of ultrasonic sound
... have always been fascinated by how some animals can discern their world through a sensing system vastly different from our own," Feng said. "The electromagnetic
sense in fishes and homing pigeons, polarized light vision in ants, chemical sensing of pheromones in insects and rodents, echolocation by ultrasound ...
Researchers develop portable 'vein finder' for faster, more accurate injections
... surface, it's still easy to miss when you try to insert a needle into the tissue below."
The Doppler effect is a phenomenon that occurs when electromagnetic
and sound waves interact with a moving object, altering wavelengths and frequency. For example, a police radar gun sends microwave signals to a ...
T-rays: New imaging technology spotlighted by American Chemical Society
... analytic applications of terahertz spectroscopy to the analytical chemistry community.
T-rays are based on the terahertz (THz) region of the electromagnetic
spectrum that is between infrared light and microwave radiation. Until recently, researchers have had great difficulty harnessing the potential of ...