A novel capacitorless solid-state power filter (SSPF) has been developed for single-phase DC-AC converters, eliminating the need for LC filters and dc-link capacitors. The proposed concept demonstrates a significant reduction in critical components, leading to enhanced efficiency and reliability.
SourceCES Transactions on Electrical Machines and Systems·JournalCES Transactions on Electrical Machines and Systems·TypeExperimental study·DateNov 6, 2024
Research team identifies seismic signature of individual songs and determines strength of each song's tremor, finding that audience movement, not music, was the primary source of harmonic tremors. The study also compares data from Swift's LA concert to other Summer 2023 SoFi concerts.
SourceSeismological Society of America·JournalSeismological Research Letters·TypeObservational study·DateMar 13, 2024
SAMSUNG T9 Portable SSD 2TB
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Researchers have found that stacking order and lateral strain can significantly enhance second harmonic generation (SHG) in 2D Janus hetero-bilayers. The study demonstrates a threefold increase in SHG intensity with AA stacking, which is four times higher than AB stacking.
A team of archaeologists has found evidence of intentionally crafted limestone spheroids at the Ubeidiya site, dating back 1.4 million years. The discovery challenges existing beliefs about early hominin capabilities and technological achievements, suggesting a desire for symmetrical shapes in stone.
SourceThe Hebrew University of Jerusalem·JournalRoyal Society Open Science·TypeObservational study·DateSep 5, 2023
Researchers at Shanghai Jiao Tong University have developed a new scattering matrix method that can sculpt light output with minimal optimization time. The method offers unparalleled nonlinear scattered light control, enabling high-resolution scanning microscopy and particle trapping through dense, scattering media.
SourceSPIE--International Society for Optics and Photonics·JournalAdvanced Photonics·DateAug 31, 2023
Scientists have successfully measured the speed of molecular charge migration in a carbon-chain molecule, revealing a movement of several angstroms per femtosecond. The study used a two-color high harmonic spectroscopy scheme with machine learning reconstruction to achieve a temporal resolution of 50 as.
SourceSPIE--International Society for Optics and Photonics·JournalAdvanced Photonics·DateAug 25, 2023
Researchers have discovered a way to utilize nonlinear scattering media for optical computing and machine learning. They created a novel theoretical framework involving third-order tensors, which can represent the complex relationships between input and output signals. This breakthrough has potential applications in real-world settings...
SourceInstitute for Basic Science·JournalNature Physics·TypeExperimental study·DateAug 1, 2023
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Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.
Researchers have developed a method to generate mid-infrared pulses with dual-wavelength spectral shaping, enabling flexible tunability in both temporal and spectral domains. This allows for enhanced High-Harmonic generation (HHG) control, opening new possibilities for applications such as electron dynamics and light-matter interaction.
SourceUltrafast Science·JournalUltrafast Science·TypeExperimental study·DateMay 30, 2023
Paderborn researchers develop innovative approach to generating higher harmonics in silicon metasurfaces, increasing efficiency through the Fano effect. The study enables third harmonics to be generated much more efficiently than with previous known structures.
SourceUniversität Paderborn·JournalLight Science & Applications·DateMay 14, 2023
Researchers develop unique method to enhance extreme ultraviolet laser power by exploiting dark-autoionizing states, increasing conversion efficiency by over ten times. This breakthrough enables studying ultrafast dynamics of dark autoionizing states at the femtosecond timescale, with potential applications in quantum technologies.
SourceInstitut national de la recherche scientifique - INRS·JournalPhysical Review Letters·DateMar 30, 2023
Scientists successfully record phase distribution of electrons, unveiling detailed structure of its complex wavefunction. The method uses attosecond laser pulse to visualize electron wavefunction in a gas.
SourceWaseda University·JournalPhysical Review A·TypeExperimental study·DateJan 10, 2023
Sky & Telescope Pocket Sky Atlas, 2nd Edition
Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.
Topological insulators exhibit unique quantum properties, with electrons flowing freely along surface edges but not through the interior. Researchers used spiraling laser light to generate harmonics from materials, allowing them to distinguish between superhighway and insulating states. By varying laser polarization and material compos...
SourceDOE/SLAC National Accelerator Laboratory·JournalNature Photonics·DateAug 18, 2022
Researchers developed a light-controllable time-domain digital coding metasurface that can manipulate microwave reflection spectra by time-varying light signals. The metasurface platform produces harmonics based on phase modulation, generating symmetrical harmonics and white-noiselike spectra.
SourceSPIE--International Society for Optics and Photonics·JournalAdvanced Photonics·DateApr 22, 2022
Tel Aviv University researchers develop innovative model that explains wave formation, tested in complex experiments. The model takes into account all unstable harmonics and limitations of previous models, providing high reliability for describing physical situation.
SourceTel-Aviv University·JournalPhysical Review Letters·DateApr 10, 2022
Sony Alpha a7 IV (Body Only)
Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.
Researchers at Kyoto University have discovered a scaling law that determines high-order harmonic generation in the perovskite material Ca2RuO4. The phenomenon, which was first observed in atomic gas systems, has been found to be highly dependent on temperature and gap energy.
SourceKyoto University·JournalPhysical Review Letters·TypeExperimental study·DateApr 5, 2022
Researchers at Duke University have developed a device that manipulates particles and cells using complex sound waves, enabling selective pairing of individual cells to measure adhesion forces. This technology could lead to personalized medicine by allowing doctors to determine treatment for individual cancer patients.
SourceDuke University·JournalNature Materials·TypeExperimental study·DateMar 24, 2022
Researchers have developed a direct method for generating complex structured light through intracavity nonlinear frequency conversion. This technique uses transverse mode locking to produce vortex beams, which are then converted into second-harmonic generation beams with distinct structural characteristics. The study demonstrates the p...
SourceSPIE--International Society for Optics and Photonics·JournalAdvanced Photonics·DateMar 18, 2022
Researchers at Johns Hopkins APL aim to create an ideal baby monitor that filters out unwanted noises, ensuring parents don't miss infant cries. The team's open-source device uses audio processing hardware to filter out background sounds, improving the overall baby monitoring experience.
A team led by Prof. Dr. Maria Hoflund developed a method to focus broadband XUV radiation with a high demagnification factor, enabling the creation of high-intensity XUV pulses with attosecond pulse duration.
SourceUltrafast Science·JournalUltrafast Science·TypeExperimental study·DateNov 26, 2021
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DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.
Scientists confirmed that topological insulators produce a unique signature from their surface when exposed to circularly polarized laser light. This discovery was made possible by high harmonic generation, which enhances the signal coming from the surface and gives it a distinctive signature.
SourceDOE/SLAC National Accelerator Laboratory·JournalNano Letters·TypeExperimental study·DateOct 22, 2021
Electrical engineers at Duke University have discovered a way to extend the use of chalcogenide glasses into the visible and ultraviolet parts of the electromagnetic spectrum. By nanostructuring these materials, they can create high-order harmonic frequencies that enable transmission of light at previously inaccessible wavelengths.
SourceDuke University·JournalNature Communications·TypeExperimental study·DateOct 5, 2021
Researchers found that male mosquitoes' ability to harmonically converge affects their offspring's immune response, with males investing more energy in mating effort than immunity. Female mosquitoes are better able to resist parasites and pathogens, but may lose immunity as they age.
SourceCornell University·JournalCommunications Biology·DateJun 24, 2021
Apple iPad Pro 11-inch (M4)
Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.
Researchers at Skolkovo Institute of Science and Technology used the Zhores supercomputer to develop a new method for generating gamma-ray combs, which are essential for nuclear spectroscopy and medicine. The method uses polarization-gated pulses to reduce ponderomotive spectral broadening, allowing for high-brightness gamma-ray sources.
SourceSkolkovo Institute of Science and Technology (Skoltech)·JournalPhysical Review Letters·DateMay 31, 2021
Researchers propose two information transition mechanisms for spatiotemporal metasurfaces: group extension and independent control of multiple harmonics. These mechanisms enable accurate manipulations of electromagnetic information and open up new possibilities for multitasking and wireless communications.
SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·DateMar 11, 2021
Researchers at Columbia University School of Engineering and Applied Science have developed a new technique to control optical nonlinearity in 2D materials. The twistoptics approach enables giant nonlinear optical responses in small volumes, leading to compact laser systems and potential applications in quantum computing, spectroscopy,...
SourceColumbia University School of Engineering and Applied Science·JournalScience Advances·DateMar 4, 2021
Scientists have developed a laser-driven soft X-ray source using an antiresonant gas-filled hollow core fibre, achieving a record-breaking 100 kHz-class repetition rate. This breakthrough technology offers a compact, high-flux SXR source suitable for various applications in fundamental and applied sciences.
SourceLight Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS·DateFeb 22, 2021
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Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.
Researchers have developed a femtosecond laser with unprecedented precision and stability, allowing for the observation of chemical transformations inside cells and the creation of ultra-thin layers on microchips. The laser's harmonic mode locking system enables precise control over pulse frequencies, opening up new avenues for applica...
SourceInstitute of Physical Chemistry of the Polish Academy of Sciences·JournalJournal of Lightwave Technology·DateJan 11, 2021
Researchers developed an all-optical attosecond few slit interferometer to measure ultrafast processes in the time-energy domain. The technique uses laser-driven high order harmonics and introduces a perturbing field to alter harmonic generation, enabling wave-front controlled attosecond interferometry with precise energy resolution.
SourceScience China Press·JournalNational Science Review·DateNov 24, 2020
Scientists have developed a paper-based mechanical memory board by folding paper using the Kresling pattern, generating a switch that can be controlled using vibrations. By placing multiple switches on a single platform, researchers created a functioning mechanical memory board with wide applicability for future device development.
SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateAug 25, 2020
Researchers discovered three stages of preservation: water transporting antimicrobial metal cations, followed by fiber swelling and inorganic crust formation, and gradual silicification. The study provides insight into nanoscale mineralization and its role in preserving ancient textiles.
SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateAug 3, 2020
CalDigit TS4 Thunderbolt 4 Dock
CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.
The study reveals that applying strain to monolayer AlN crystals can enhance the efficiency of even and odd harmonics radiated under ultrafast laser excitation. Researchers found that strain-dependent electronic transitions result in different harmonic spectra, providing a new reference for studying semiconductor dynamics.
Researchers measured radial pulse waves at the wrist to identify artery changes in menopausal women, which were not evident in standard blood pressure measurements. The study found that specific harmonic amplitudes in radial pulse waves reflected changes during menopause and may shed light on atherosclerosis progression.
A bright source of femtosecond soft X-ray pulses has been created using extreme high-order harmonic generation process. This enables the simultaneous local probing at both carbon and nitrogen sites within molecules, facilitating multiple-site investigation with potential correlations between these sites upon molecular rearrangements.
SourceForschungsverbund Berlin·JournalThe Journal of Physical Chemistry Letters·DateDec 21, 2018
Celestron NexStar 8SE Computerized Telescope
Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.
Researchers create a programmable time-domain digital coding metasurface that can respond to electromagnetic waves with strong nonlinear processes. The metasurface enables simultaneous wave-matter interactions and frequency spectrum manipulation, paving the way for simplified and compact communication systems.
SourceScience China Press·JournalNational Science Review·DateDec 5, 2018
Researchers at Samara University developed an ultralight diffraction optic that weighs just 5 grams, compared to a massive system of lenses and mirrors weighing 500 grams. The new technology enables high-resolution images with comparable quality to consumer cameras and mobile phones.
SourceSamara University·JournalIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing·DateAug 8, 2018
Researchers developed a nonlinear elastic metasurface that can convert a soundwave's fundamental frequency to its second harmonic, advancing noise control technologies. This concept could isolate low frequencies, making it easier to absorb them, and potentially lead to new acoustic devices like diodes and transistors.
SourceAmerican Institute of Physics·JournalJournal of Applied Physics·DateApr 3, 2018
Apple AirPods Pro (2nd Generation, USB-C)
Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.
Physicists at MSU used high harmonics spectroscopy to study the behavior of electrons in a dielectric material. They found that ultra-short laser pulses can turn the material into a conductor by increasing its kinetic energy and changing its many-body state.
SourceLomonosov Moscow State University·JournalNature Photonics·DateMar 26, 2018
Scientists have discovered a new method to generate terahertz frequencies, long considered challenging to source, using an infrared frequency comb. The innovative system produces extremely pure terahertz tones, opening up new applications for wireless communications and high-speed digital communication.
SourceHarvard John A. Paulson School of Engineering and Applied Sciences·JournalNature Photonics·DateOct 17, 2017
A new study published in Frontiers in Human Neuroscience has found that the harmonic structure of pop songs is linked to their placement in the Billboard Top 100 charts. The research analyzed chord-by-chord transcriptions of 545 songs and found that rare chords and surprising harmonies are key factors in a song's popularity.
SourceFrontiers·JournalFrontiers in Human Neuroscience·DateAug 23, 2017
Researchers at Eindhoven University of Technology have created a breast-friendly method for detecting cancer without radiation, generating 3D images with improved accuracy. The new technology uses echography and blood vessel structure analysis to identify cancerous tumors.
SourceEindhoven University of Technology·JournalScientific Reports·DateNov 3, 2016
Rigol DP832 Triple-Output Bench Power Supply
Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.
Researchers have developed an optical frequency divider with unprecedented precision, enabling arbitrary optical frequency conversions. This breakthrough paves the way for improved applications in optics, metrology, and atomic physics.
SourceScience China Press·JournalNational Science Review·DateOct 21, 2016
UNSW researchers have identified a link between the physical structure of brains and spontaneous patterns of brain function at rest. The study uses harmonic waves to explain how brain shape influences resting brain activity, which could lead to new diagnosis techniques for disorders of consciousness.
SourceUniversity of New South Wales·JournalNature Communications·DateJan 26, 2016
Researchers created an audio lure using the frequency of a female mosquito's wings, attracting 95% of male mosquitoes. The device costs around $20 and can be run for weeks. Scientists also found that females are oblivious to male wing beats, making this technology a promising solution to control mosquito populations.
SourceJames Cook University·JournalJournal of Medical Entomology·DateJan 6, 2016
Garmin GPSMAP 67i with inReach
Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.
Researchers demonstrated the fabrication of high-Q LN microresonators using femtosecond laser micromachining, achieving efficient second harmonic generation (SHG) in the visible wavelength range. The normalized conversion efficiency of SHG was measured to be 1.35×10-5 /mW.
Researchers found a new type of multipolar order in strontium-iridium oxide, which could lead to breakthroughs in electronic device functionalities and high-temperature superconductivity. The discovery was made using an optical harmonic generation technique that exploits changes in crystal symmetry.
SourceCalifornia Institute of Technology·JournalNature Physics·DateOct 26, 2015
A research team at Georgia Institute of Technology has realized a nonlinear material with opposite refractive indices at the fundamental and harmonic frequencies of light, as predicted theoretically. This discovery has significant implications for controlling light in information processing, sensing, and signal generation.
SourceGeorgia Institute of Technology·JournalNature Materials·DateJun 15, 2015
Researchers track attosecond processes in methyl fluoride and methyl bromide molecules, revealing restructuring of electron shells caused by ionizing laser pulses. This method opens up new possibilities for studying fine chemical processes critical to molecular biology.
SourceMoscow Institute of Physics and Technology·JournalNature Communications·DateMay 13, 2015
AmScope B120C-5M Compound Microscope
AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.
Researchers analyzed hermit thrush songs and found notes related by simple integer proportions, similar to human musical scales. The study suggests that hermit thrushes actively select pitches following the harmonic series, possibly due to easier memory or evaluation by females.
SourceUniversity of Vienna·JournalProceedings of the National Academy of Sciences·DateNov 4, 2014
Researchers develop theoretical framework to generate coherent radiations in the water window range, enabling high-contrast imaging of biological samples. The study extends previous work on hydrogen and applies it to argon atoms, paving the way for improved spectroscopy techniques.
SourceSpringer·JournalThe European Physical Journal D·DateAug 21, 2014
New research suggests that bats' brains use the temporal binding hypothesis to focus on targets in cluttered scenes, which could inspire new navigation technology. By studying bat echolocation, scientists have developed a better understanding of how to design radar and sonar systems for real-time performance.
SourceBrown University·JournalJournal of Experimental Biology·DateAug 15, 2014
Researchers at Kansas State University are developing a way to enhance high-order harmonics to create powerful small tabletop light sources. They propose synthesizing two- or three-color laser fields to optimize harmonic intensity, potentially leading to new applications in science and technology.
SourceKansas State University·JournalNature Communications·DateJun 2, 2014
Researchers analyze seismic activity at Alaska's Redoubt Volcano, documenting a sudden increase in tremor frequency just before six eruptions. This unique phenomenon may help scientists refine models and better understand volcanic pressurization.
SourceUniversity of Washington·JournalNature Geoscience·DateJul 14, 2013
Davis Instruments Vantage Pro2 Weather Station
Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.
Researchers use harmonic generation microscopy to create high-resolution maps of skin cells, revealing increased sizes of basal keratinocytes and nuclei with natural aging. The findings provide an index for scoring natural or intrinsic skin aging, which could help monitor skin health and test effectiveness of anti-aging treatments.
SourceOptica·JournalBiomedical Optics Express·DateDec 13, 2012
Researchers have optimized a type of optical resonator to boost infrared signals to higher-energy ultraviolet beams using low-power nonlinear processes. This enables the creation of low-cost, wavelength-tunable ultraviolet sources with applications in chemical detection, medical imaging and fine lithography.
SourceUniversity of Michigan·JournalOptics Express·DateNov 29, 2011
Researchers at Brown University discovered how bats can distinguish between target echoes and background clutter using subtle changes in sound intensity. By delaying their neural response to weaker echoes, bats can effectively 'defocus' clutter, maintaining a clear image of the target.
Research at Duke University reveals that music scales are based on the physics of the human voice, mirroring speech's emotional content. This study provides new insights into why humans appreciate music, suggesting it mimics speech's emotional expression.
Researchers at Cornell University discovered that male and female mosquitoes (Aedes aegypti) create a harmonic duet just before mating. The frequency of this duet is approximately 400-600 hertz for the female and 600-1200 hertz for the male, significantly above previously thought limits.
SourceCornell University·JournalScience·DateJan 8, 2009
Kestrel 3000 Pocket Weather Meter
Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.
Researchers at USC created an AI system called ASSA that can generate harmonious musical accompaniment in the style of a chosen artist. The system uses machine learning techniques to analyze melodic and harmonic patterns, allowing users to input their desired melody and receive an accompanying chord progression.
A Penn State team has shown that non-magnetic materials can have more properties than previously thought, thanks to their unique structure and symmetry. The researchers found that certain non-magnetic materials can exhibit roto second harmonic generation, a property previously associated with magnetic materials.
SourcePenn State·JournalPhysical Review Letters·DateJun 11, 2008
A harmonic scalpel with ultrasound technology can reduce blood loss, postoperative facial paralysis, and infection rates in patients requiring salivary gland removal. The study compared conventional surgery to harmonic scalpel parotidectomy for benign or malignant disease.
SourceMedical College of Georgia at Augusta University·JournalThe Laryngoscope·DateJun 27, 2005