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UrduWrapping up the HKIAS Distinguished Lecture Series on Electronics and Photonics was Professor Chi Hou Chan, the Chair Professor of the Department of Electrical Engineering (EE) at the City University of Hong Kong (CityU).
Tag: ELECTROMAGNETICS
Cascaded metasurfaces for dynamic control of THz wavefronts
Dynamic control of THz wavefronts demonstrated by rotating layers of cascaded metasurfaces
Investigational magnetic device shrinks glioblastoma in first-in-world human test
Houston Methodist Neurological Institute researchers from the department of neurosurgery shrunk a deadly glioblastoma tumor by more than a third using a helmet generating a noninvasive oscillating magnetic field that the patient wore on his head while administering the therapy…
“Magic-angle” trilayer graphene may be a rare, magnet-proof superconductor
New findings might help inform the design of more powerful MRI machines or robust quantum computers.
Main attraction: Scientists create world’s thinnest magnet
A one-atom thin 2D magnet could advance new applications in computing and electronics
The origin of bifurcated current sheets explained
A Korean research team has identified the origin of bifurcated current sheets, considered one of the most unsolved mysteries in the Earth’s magnetosphere and in magnetized plasma physics. A POSTECH joint research team led by Professor Gunsu S. Yun of…
New method predicts ‘stealth’ solar storms before they wreak geomagnetic havoc on Earth
For the first time, stealth coronal mass ejections can be detected before they wreak havoc on Earth without the need for dedicated spacecraft
Unlocking efficient light-energy conversion with stable coordination nanosheets
Scientists design a high-performance, self-powered, UV photodetector using 2D nanosheets that show record photocurrent stability under air exposure
Removing the lead hazard from perovskite solar cells
“The solar energy-to-electricity conversion of perovskite solar cells is unbelievably high, around 25%, which is now approaching the performance of the best silicon solar cells,” says Professor László Forró at EPFL’s School of Basic Sciences. “But their central element is…
Methodical architectural design for ideal wind energy production
Systematic Architectural Design for Optimal Wind Energy Generation is an essential reference for students of architecture at all levels, professional architects, as well as readers interested in green building design, renewable energy, and sustainability studies that pave the way towards…
Demonstration of World Record: 319 Tb/s Transmission over 3,001 km with 4-core fiber
>120 nm signal bandwidth comprising 552 WDM channels and using both-doped fiber and Raman amplification
Scientists observe a new type of topological defect in chiral magnets for the first time
“Topological defects” are formed when the symmetry of a magnetic material is disrupted. Domain walls (DWs) are a type of topological defect that separates regions of different magnetic orientations. A widely studied phenomenon, the manipulation of these defects has potential…
The pressure is off and high temperature superconductivity remains
Development of a new pressure-quench technique demonstrates superconductivity in iron selenide crystals sans pressure
New composites with magnetolectrical properties will help treat neurodegenerative diseases
Scientists found new opportunities to improve the magnetoelectric properties of polymer nanocomposites.
Beyond 5G: Wireless communications may get a boost from ultra-short collimating metalens
Screens may be larger on smartphones now, but nearly every other component is designed to be thinner, flatter and tinier than ever before. The engineering requires a shift from shapely, and bulky lenses to the development of miniaturized, two-dimensional metalenses.…
Cutting through noise for better solar cells
As society moves towards a renewable energy future, it’s crucial that solar panels convert light into electricity as efficiently as possible. Some state-of-the-art solar cells are close to the theoretical maximum of efficiency–and physicists from the University of Utah and…
New study helps explain ‘silent earthquakes’ along New Zealand’s North Island
Seamounts offer clue to solving a tectonic puzzle
New study presents transformative metasurface based on zerogap embedded template
A research team, led by Professor Dai-Sik Kim in the Department of Physics at UNIST has developed a new technique of predefining the crack pattern on a flexible substrate by a sequential deposition of metallic layers which leads to a…
Tiny tweaks to sparkle: Editing light-emitting organic molecules via surface modification
Researchers develop a strategy that allows a single family of polymeric materials to emit light in any of the three primary colors
Scalable manufacturing of integrated optical frequency combs
Optical frequency combs consist of light frequencies made of equidistant laser lines. They have already revolutionized the fields of frequency metrology, timing and spectroscopy. The discovery of ”soliton microcombs” by Professor Tobias Kippenberg’s lab at EPFL in the past decade…
Transforming the layered ferromagnet F5GT for future spintronics
Record-high electron doping in a layered ferromagnet
Passing the COVID test in just five minutes
Researchers at Osaka University develop a new highly sensitive test for the SARS-CoV-2 virus that utilizes a fusion of artificial intelligence and nanopore technology which may enable rapid point-of-care testing for COVID
Pursuing safer, cheaper pharmaceuticals via electromagnetic control at the atomic level
Researchers explore new ways to synthesize chiral compounds
General Atomics to ship world’s most powerful magnet to ITER global fusion energy project
Major milestone in US contribution
One step towards a daily-use deep UV light source for sterilization and disinfection
Researchers construct a gallium nitride optical microcavity with high reflectivity distributed Bragg reflectors to double the frequency of incoming light, which may be utilized for a safe and practical deep UV light source with bactericidal effects
Near-field routing of hyperbolic metamaterials
Flexible control of the propagating direction of near-field light can be realized with hyperbolic metamaterials, using an all-electric metasource
Achieving UV nonlinearity with a wide bandgap semiconductor waveguide
The field of ultrafast nonlinear photonics has now become the focus of numerous studies, as it enables a host of applications in advanced on-chip spectroscopy and information processing. The latter in particular requires a strongly intensity-dependent optical refractive index that…
Researchers reveal relationship between magnetic field and supercapacitors
Since energy storage devices are often used in a magnetic field environment, scientists have often explored how an external magnetic field affects the charge storage of nonmagnetic aqueous carbon-based supercapacitor systems. Recently, an experiment designed by Prof. YAN Xingbin’s group…
Control over water friction with 2D materials points to ‘smart membranes’
Dramatic decrease in friction when water is passed through nanoscale capillaries made of graphene
An atom chip interferometer that could detect quantum gravity
Physicists in Israel have created a quantum interferometer on an atom chip. This device can be used to explore the fundamentals of quantum theory by studying the interference pattern between two beams of atoms. University of Groningen physicist, Anupam Mazumdar,…
Water droplets become hydrobots by adding magnetic beads
Using a piece of magnet, researchers have designed a simple system that can control the movement of a small puddle of water, even when it’s upside down. The new liquid manipulation strategy, described in the journal Cell Reports Physical Science…
Using the fungal electrical activity for computing
A UOC scientific publication analyses and proposes techniques for correctly interpreting the fungal electrical internal activity
Shining light on two-dimensional magnets
New research paves the way to hyper-efficient data storage
‘Floating’ microgrids: Optimizing naval ships’ power systems
Lehigh University electrical and computer engineering researcher Wenxin Liu awarded two ONR grants–totaling $900,000–for algorithmic design and hardware experimentation that could lead to advances in civilian microgrid technology
Hexagonal boron nitride’s remarkable toughness unmasked
2D material resists cracking and description by century-old theory of fracture mechanics
The powerhouse future is flexoelectric
‘Giant flexoelectricity’ breakthrough in soft elastomers paves way for improved robots and self-powered pacemakers
CorePower Magnetics announces completion of exclusive licenses
CorePower Magnetics also names CEO to drive next generation magnetics technology commercialization
Drone-mounted millimeter-wave radar sees through inner walls of chimneys
Researchers at Osaka University demonstrate ultra-wideband radars using fiber-optic communications technologies
The dark matter particle explorer has measured high-precision cosmic ray helium energy spectrum
Dark Matter Particle Explorer (DAMPE) Collaboration directly observed a spectral softening of helium nuclei at about 34TeV for the first time. This work was based on measurements data of the helium spectrum with kinetic energies from 70 GeV to 80…
Nanofibrous filters for PM2.5 filtration
In a paper published in NANO , the author reviewed many kinds of nanofibrous filters including the component, preparation process, and application performances to provide directional guidance for improvement of the air purification field. Poor air quality is worldwide recognized…
Detecting skin disorders based on tissue stiffness with a soft sensing device
By putting a piece of soft, strain-sensing sheet on the skin may be able to detect skin disorders non-invasively and in real-time very soon. A research team co-led by a scientist from City University of Hong Kong (CityU) has designed…
Study of Fe2+ ions contributes to further understanding of magnetoelectric coupling
A paper by Kazan Federal University saw light in Journal of Physics: Condensed Matter
Scientists overhear two atoms chatting
How materials behave depends on the interactions between countless atoms. You could see this as a giant group chat in which atoms are continuously exchanging quantum information. Researchers from Delft University of Technology in collaboration with RWTH Aachen University and…
Odd angles make for strong spin-spin coupling
Rice physicists’ RAMBO reveals magnetic phenomenon useful for quantum simulation and sensing
“Bite” defects in bottom-up graphene nanoribbons
Quantum electronics
Holograms increase solar energy yield
A newly developed holographic light collector boosts solar panel efficiency for an energy conversion increase of approximately five percent over the course of a year
Pristine quantum criticality found
Study: Quantum fluctuations may give rise to topological phases of matter
Electromagnetic anomalies that occur before an earthquake
It has been documented over hundreds of years that various electromagnetic anomalies occur during a few weeks before the occurrence of a large earthquake. These electromagnetic anomalies are variations that appear in telluric current, geomagnetism, electromagnetic waves etc. before the…
Controllability of ionization energy of atoms promises advancements in chemical synthesis
A paper by Kazan Federal University and Tatarstan Academy of Sciences saw light in Physics Letters A
Researchers develop advanced model to improve safety of next-generation reactors
The model can better predict the physical phenomenon inside of very-high-temperature pebble-bed reactors