Articles tagged with Vibration
A biologically inspired event camera measures vibrations accurately without expensive equipment, providing a cost-effective alternative to laser-based systems. The camera captures high-speed vibrations by recording brightness changes independently at each pixel, enabling precise amplitude, phase, and frequency estimation.
Researchers developed a wearable vibration sensor capable of detecting subtle body movements without external power, opening new possibilities for healthcare technologies. The sensor accurately captures physiological signals and detects extremely faint vibrations across a broad frequency range.
Researchers at Hong Kong Polytechnic University create a new machining method that combines laser and magnetic fields to machine advanced materials like high-entropy alloys. The dual-field approach produces smoother surfaces, reduced damage, and improved material removal rates.
Scientists at Tsinghua University introduce a new technique to carve complex shapes on material surfaces, enabling more design freedom and efficiency in surface design. The method uses high-speed vibrations to create convex microstructures that can change how a surface interacts with its environment.
Southwest Research Institute (SwRI) will predict F-16 landing gear component lifespan and recommend maintenance improvements under a $9.9 million contract. The seven-year agreement leverages SwRI's aging aircraft expertise in probabilistic analysis, fatigue testing.
Researchers found that brain activity corresponds to perceived beat when listening to music via sound but not through touch. This ability is crucial for human social interactions through music and may be strengthened by long-term practice.
Triboelectric Nanogenerators (TENGs) have demonstrated astonishing development potential across energy, sensing, and advanced material science domains. Four cutting-edge applications of TENGs include fluid energy harvesting, self-adaptive sensors and systems, high-voltage power sources, and interface probes.
A team of researchers at Kyoto University has successfully developed a method to calculate the vibrations of black holes using exact WKB analysis. The approach reveals complex patterns in spiraling waves, enabling precise capture of frequency structure and bridging theoretical predictions with observational data.
A research team has experimentally demonstrated a nonlinear wave phenomenon that changes its frequency depending on the direction of incoming waves. The system exhibits different responses to waves entering from one side versus the other, with potential applications in medical ultrasound imaging and noise control.
Researchers successfully confirmed long-standing 'electron tunneling' phenomenon, revealing surprising interactions between electrons and atomic nuclei during tunneling. The study's findings have significant implications for advanced technologies like semiconductors, quantum computers, and ultrafast lasers.
Researchers discovered ferroelectric phenomena at a subatomic scale in Brownmillerite, overcoming collective atomic vibrations limitations. This property enables selective domain formation within tetrahedral layers when an electric field is applied.
Researchers at Pohang University of Science & Technology have developed Pixel-Based Local Sound OLED technology, allowing each pixel to emit different sounds. This breakthrough enables truly localized sound experiences in displays, enhancing realism and immersion.
A team of researchers at Kyoto University has developed an experimental setup to precisely adjust the distance between microbubbles, enabling the manipulation of liquid flows. By controlling bubble vibrations, they were able to synchronize their movements and alter the surrounding flow, providing a new fluid control tool for medical an...
Researchers have observed the interactions between electrons and a unique atomic vibration in twisted graphene, called a 'phason', for the first time. The Quantum Twisting Microscope has provided unprecedented insight into electron-phonon dynamics, shedding new light on superconductivity and 'strange metallicity'.
Researchers from the Institute of Physical Chemistry, Polish Academy of Sciences, have identified unusual phosphorus molecules in space. These molecules, including phosphabutadiyne and vinylphosphaethyne, were studied using cryogenic techniques and infrared spectroscopy, providing new insights into their formation and properties.
A new microscopy technique, SIMIP, combines structured illumination with mid-infrared photothermal detection to achieve high-speed chemical imaging with superior resolution. The method outperforms conventional methods in terms of spatial resolution and chemical contrast.
Fiddler crabs use vibrational signals to communicate during courtship, and a new study reveals that signal features are influenced by the male's claw size. Researchers found that males with larger claws produce higher-energy signals, allowing females to assess their quality from afar.
Newborn warty birch caterpillars, just 1-2 mm long, establish tiny territories by producing warning vibrations through their leaves. By beating the leaf tip with their thorax and dragging oar-shaped hairs on their rear end, these teeny creatures outmaneuver intruders and secure their narrow escapes.
A team of experts identified key challenges in wearable multisensory haptic devices, including variability in skin contact mechanics and tactile masking. However, emerging actuation methods like polymeric, fluidic, and thermal actuation offer promising solutions to expand the scope of haptic feedback.
Distributed acoustic sensing systems face data processing speed limitations; researchers leverage photonic neural networks to overcome these challenges. The TWM-PNNA system achieves high recognition accuracy above 90% with low power consumption, outperforming electrical GPUs by orders of magnitude.
Researchers from TU Delft studied FePS₃ nanomaterial, discovering how vibrations change near its phase transition temperature and affecting magnetic properties. The findings pave the way for ultra-sensitive sensors with exceptional sensitivity to internal and external forces.
The Dielectric Elastomer Sensor (DES) offers real-time pressure and vibration monitoring in soft fluidic actuators, ideal for robotics and biomedical devices. The sensor's flexibility and ability to withstand large deformations make it suitable for applications in automobile designing and structural health monitoring.
Researchers at Japan Advanced Institute of Science and Technology developed Leafbot, a soft robot that uses vibration-driven locomotion to traverse uneven surfaces. The robot's compliant structure and simple motion strategy enable it to overcome complex obstacles, making it valuable for applications such as inspection and exploration.
A new, inexpensive measurement device can measure both pressure and acceleration using a single design and method, saving costs and simplifying manufacturing. This technology has potential applications in medical care, disaster mitigation, landslide alerts, and heavy-machinery maintenance.
Researchers discovered that mantis shrimp's armored clubs selectively block high-frequency sound waves to prevent damage. The layered patterns act as a shield against vibrations, enabling the shrimp to preserve its striking ability over multiple impacts.
Researchers at Lancaster University have developed a new method to detect Alzheimer's disease by analyzing changes in brain oxygenation dynamics and neuronal function. The study found that individuals with Alzheimer's disease exhibit altered respiratory frequency, which may be an early indicator of the condition.
A team of researchers at the University of California - San Diego has made a groundbreaking discovery by showing that infrared radiation can lower the temperature needed for dehydration by up to 14 degrees Celsius. This is achieved through radiative energy transport, which had been overlooked until now.
Concordia researchers propose a novel method using ultrasound-guided microbubbles to stimulate critical cytokine secretion in T cells, potentially re-activating them and increasing the release of proteins needed to fight cancer. The approach could complement existing treatments and improve outcomes.
Researchers discovered how polarons behave in tellurene as it becomes thinner, revealing changes in electrical transport and optical properties. This knowledge could inform the design of advanced technologies like more efficient electronic devices or novel sensors.
Researchers at SeoulNational University of Science & Technology propose two new designs for energy-efficient vibration energy harvesters that boost power output and efficiency. The designs use a repulsive magnet pair, yoke, and optimized coil placement to maximize magnetic flux change, leading to higher power generation.
Cutaneous electrohydraulic (CUTE) wearable devices can produce a range of tactile sensations, including pressing and vibrations, with unprecedented control. Users perceive most cues as pleasant, highlighting the technology's potential for assistive technologies and augmented reality.
A study by Harvard Medical School researchers found that high-frequency mechanical vibrations are routed from the body to the inferior colliculus in the midbrain, amplifying sensory experience. This convergence enables organisms to perceive and respond to subtle changes in their environment, critical for survival.
Researchers at Stanford University have designed a comfortable, flexible knit sleeve that simulates realistic touch using pressure-based haptics. The Haptiknit sleeve provides more accurate tactile feedback than vibration-based devices, allowing for smoother navigation, military communication, and rehabilitation.
Researchers at MIT have created a new magnetic state in an antiferromagnetic material using terahertz laser light, enabling controlled switching and potentially leading to more efficient memory chips. The technique provides a powerful tool for manipulating magnetism and advancing information processing technology.
Researchers found that slingshot spiders can listen for approaching insects before releasing their web to catapult forward and capture prey. The spiders use sound-sensitive hairs on their legs to detect the vibrations from the insects' wings, allowing them to deploy their webs in mid-air.
Researchers measured seat acceleration and jerk on bus routes across Sydney, finding vibrations can cause discomfort and long-term health issues. The study suggests potential enhancements like better suspension systems and driver monitoring to improve ride comfort and fuel efficiency.
Researchers are revolutionizing fresco assessment with laser Doppler vibrometry, enabling the detection of hidden delaminated areas. This technology aims to democratize conservation expertise and create accessible tools for preserving these cultural treasures.
Researchers developed an on-chip detector that uses phonon polaritons to enhance molecular fingerprint detection. This compact design enables ultra-sensitive gas sensing and paves the way for medical diagnostics and environmental monitoring.
An international team of researchers has confirmed the location of the oldest ochre mine in the world, dating back around 48,000 years. Ochre was found to have spread from the mine to nearby areas, revealing ancient extraction and transport networks.
Nanomechanical resonators have been used to sense minuscule forces and mass changes. The new aluminum nitride resonator achieved a quality factor of over 10 million, opening doors to new possibilities in quantum sensing technologies.
Researchers have developed sensors that can detect changes in water flow, warning operators of hazardous conditions in the deep ocean. The technology has potential to save lives by giving technicians time to reach safety.
EPFL researchers have developed correlated vibrational spectroscopy (CVS) to measure the behavior of water molecules participating in hydrogen bonds. The method allows for direct measurement of electronic charge sharing and H-bond strength, enabling precise characterization of molecular-level details in various materials.
A new study uses PCA and Mahalanobis distance to detect early bolt loosening in wind turbines, achieving accuracy of over 95%. This technology improves operational safety and efficiency by providing early warnings based on objective data.
Scientists at the University of Tokyo have developed a new system that increases the measurement rate of Raman spectroscopy, a technique used to identify molecules. This improvement enables faster identification of molecules and cells, with applications in biomedical diagnostics and material analytics.
Researchers at Rensselaer Polytechnic Institute developed a polymer film infused with a special chalcogenide perovskite compound that produces electricity when squeezed or stressed. The material has shown promising results, including powering LED lights and potentially being used in machines, infrastructure, and biomedical applications.
Researchers at ETH Zurich have developed a material that combines stiffness and damping properties, making it suitable for various applications. The new composite material features layers of stiff materials connected by ultra-thin rubber-like layers, resulting in excellent vibration-damping performance.
Researchers found that geckos utilize the saccule, a part of their inner ear traditionally linked to balance, to detect low-frequency vibrations. This 'sixth sense' plays a complementary role in the geckos' normal hearing and sensory perception.
A landslide in remote Greenland caused a mega-tsunami that sloshed back and forth across a fjord for nine days, generating vibrations throughout the Earth. The study used mathematical models to recreate the event and demonstrate how the sloshing of water would have continued, matching global seismic recordings.
Researchers developed Transparent Pressure-Calibratable Interference Electrotactile Actuator (TPIEA) technology to provide consistent virtual haptic experiences. The TPIEA uses platinum nanoparticles to reduce impedance and achieve high transmittance, allowing for precise and varied tactile sensations.
A recent study demonstrates how real-time haptic feedback can enhance interoceptive awareness, improving mental and physical health. Participants showed improved accuracy in heart rate discrimination tasks after receiving haptic feedback, suggesting a deeper connection between the mind and body.
Researchers developed a novel tunable ultrasonic liquid crystal light diffuser that allows changing the diffusion direction. The device uses non-coaxial resonant flexural vibration to control molecular orientation and refractive-index distribution, resulting in controlled light distribution.
Researchers designed a novel method using electricity to synthesize methanol from carbon dioxide, increasing efficiency by up to eight times. The process involves cobalt phthalocyanine molecules on carbon nanotubes, with cations enhancing methanol formation.
A new invention at TU Wien has created a method to dampen vibrations in precision devices such as high-performance astronomical telescopes. The technology uses electropermanent magnets, which are permanent magnets with a coil, to suppress vibrations efficiently and increase performance.
A randomized controlled trial found that four weeks of outdoor gait training, combined with home exercises, improved running biomechanics and reduced the time feet were in contact with the ground. This technique may help patients improve their stride and reduce pain associated with shin splints.
A study published in Trends in Urology and Men's Health found that several treatments have been effective in treating delayed ejaculation, including vibration stimulation therapy and psychotherapy. The research highlights the need for health professionals to be aware of a patient's full medical and sexual history and offers hope for mi...
Researchers developed an Adaptive Filter with Compensation (AFC) to suppress rotor vibrations in AMB systems, reducing amplitudes by up to 77% through simulations and experimental validations. This method paves the way for more reliable and efficient AMB systems, transforming high-precision industries.
Researchers at the University of Malaga have developed an instruction manual to understand the operating limits of phantom motion, allowing for cost-effective and lighter haptic devices. The study found that individuals can perceive phantom sensation when a vibrating point travels at least 20% of the separation between actuators.
Scientists from TU Delft and Brown University engineer string-like resonators capable of vibrating for extended periods at room temperature, enabling sensitive sensing applications. The innovation uses advanced nanotechnology techniques and machine learning algorithms to create ultra-long strings with minimal energy loss.
Researchers at Pohang University of Science & Technology have developed the first wide field-of-hearing metalens, overcoming traditional acoustic lens limitations. The device achieves up to 140 degrees of field-of-hearing without sound distortion, enabling new applications in acoustic imaging and high-sensitivity sensing.
An international team of researchers has discovered that the quantum particles responsible for material vibrations can be classified through topology. The study found that at least half of materials exhibit non-atomic cumulative phononic band sets, leading to potential applications in frequency filtering and mechanical energy attenuation.