Articles tagged with Electromagnetic Waves
A new amplifier invented at UC San Diego has the potential to revolutionize high capacity wireless communications systems. The Cascaded Constructive Wave Amplifier can amplify signals at millimeter wave frequencies, enabling data transfer rates of up to 10 Gigabits per second over a kilometer.
Scientists at the University of Liverpool have developed a metamaterial structure that guides water through concentric corridors, reducing wave overtopping and damage to coastal defenses. The 'invisibility cloak' technology shows promise in protecting land from natural disasters such as tsunamis.
Researchers at Penn have developed a theoretical framework for increasing the speed of light pulses in nanoscale metal chains, potentially enabling high-speed optical computing. The discovery may overcome limitations in optics and pave the way for novel optoelectronic devices.
Researchers at Lawrence Livermore National Laboratory have developed a new technique to visualize high-frequency acoustic waves in nanostructures, such as LED lights. By combining molecular dynamics simulations with terahertz (THz) radiation, they can detect these waves and gain insights into the dynamics of crystals under ultra-high s...
Researchers at Duke University have successfully created a three-dimensional sound cloak in theory, allowing sound waves to travel around it undistorted. This breakthrough could lead to improved acoustics in concert halls and hidden submarines from sonar detection.
Researchers suggest that large earthquakes emit electromagnetic signals days or weeks before they strike, potentially providing early warnings. However, the scientific community needs to take notice and verify these findings.
Researchers performed the world's smallest double slit experiment using a hydrogen molecule, demonstrating classical behavior at the quantum level. The results show that quantum particles start behaving in a classical way on a scale as small as a single hydrogen molecule.
Georgia Tech researchers develop method to predict evanescent wave behavior in nanoscale radiation heat transfer, enabling design of new nanodevices and technologies. The discovery opens path for various applications, including solar thermal energy technologies.
Surface plasmon polaritons move as waves and follow conventional optics' rules, limiting their size. Researchers developed a comprehensive theory to control SPPs, providing a bridge between nanoscale electronics and photonics.
Scientists at the University of Michigan developed a lens-like device that focuses electromagnetic waves down to tiny points, removing wavelength limitations for data storage and sensing applications. The breakthrough enables CD storage to hold up to one hundred times more information using terahertz radiation.
Scientists have developed a technique to accurately measure and control extremely short laser pulses, allowing them to track and manipulate electrons at the atomic level. The new method enables precise reconstruction of individual femtosecond pulses, opening up new possibilities for sub-atomic research.
The team created a cloak using metamaterials arranged in concentric circles, which confers specific electromagnetic properties. The cloak appears to have properties similar to free space when viewed externally, reducing reflection and shadow detection.
Researchers found Alpine glaciers lost 35% of surface area between 1850-1970, with potential disappearance by 2100 under 3 degree Celsius warming. Meanwhile, weekly wobble in Earth's rotation pole was observed and predicted using atmospheric models, explaining centimeter-level displacements during the 2005-2006 winter season.
Dr. George Papanicolaou was chosen for his significant contributions to mathematics and its applications, including imaging in random media and financial mathematics.
Researchers at Duke University have reported a theoretical blueprint for an invisibility cloak made of metamaterials. The cloak can hide objects so well that observers are unaware of their presence, similar to how water flows around a smooth rock in a river. This technology has potential applications in wireless communications and acou...
Millimeter wave therapy has been used in Eastern Europe to alleviate over 50 conditions, including heart disease and cancer. A new Temple University study aims to investigate its effectiveness for pain relief, immune system modulation, and chemotherapy improvement, with the goal of introducing a non-invasive treatment option.
In Young's double-slit experiment, electrons exhibit both particle-like and wave-like behavior. The Complementarity Principle explains this ambiguity, stating that an electron can be at position A or B, but not both at the same time.
Researchers found evidence for differential rotation of Earth's solid inner core, with the core rotating faster than the surrounding mantle and crust. The discovery suggests electromagnetic coupling is driving the inner core's motion, generating an electric current that causes it to spin.
Researchers have discovered the inverse Doppler effect, a phenomenon where electromagnetic waves compress and expand, leading to new advances in optics and communications equipment. This discovery challenges the basic laws of nature and could lead to breakthroughs in material engineering.
A new NIST method corrects time distortions in oscilloscopes, improving signal accuracy and reducing noise interference. The free software package can be applied to a wide range of equipment and signals.
Researchers at UC Berkeley develop a silver superlens that breaks the diffraction limit, enabling resolution of up to 60 nanometers in images of nanowires and biological samples. This breakthrough opens doors to advances in nanoengineering, biomedical imaging, and high-density electronic circuitry.
Researchers at Rice University developed a new wave guide technology that enables terahertz sensing capabilities in confined spaces. This innovation could aid applications such as explosive detection, cancer screening, and quality control, offering unique advantages over existing technologies.
Researchers develop a new technology using low-frequency wide band Rayleigh waves to detect cracks in rails at high speeds. This technique could transform every train in the country into part of a 24-hour network of rail crack detectors.
Researchers have made groundbreaking discoveries in carbon nanotubes, with the smallest diameter yet found. Additionally, negative refraction has been observed in liquid surface waves, while a new form of high-density water has been discovered at the interface between ice and silicon dioxide.
Researchers at the University of Toronto have discovered a new physics phenomenon that uses metamaterials to create a focused beam of light. By amplifying evanescent waves and correcting their phase, these lenses could revolutionize the engineering of electronic devices at the nanometre scale.
Researchers at JILA have developed a new waveguide structure that coaxes light waves into traveling along at the same speed, producing well-synchronized photons firing out of the system. The breakthrough enables electromagnetic radiation with peak powers approaching a megawatt and produces nanometer-scale light waves.
The project aims to develop detection and classification algorithms for multi-modal inverse problems, enabling robots to sense invisible signals and trace them back to their sources.
Researchers at Max Planck Institute for Quantum Optics create miniature chip that achieves Bose-Einstein condensation, replacing bulky machines with reduced power consumption. The new technique enables integration of multiple components on a single chip, paving the way for innovative devices and applications.
Researchers at Sandia National Laboratories have created a new type of photonic crystal that can bend microwaves around tight corners with nearly 100% transmission efficiency. This breakthrough has the potential to improve microwave communications and enable more efficient long-distance optical communications.