Articles tagged with Vibration
Researchers studied the larynx of Daubenton's bats and found that different structures are used for high-frequency echolocation calls and lower-frequency social calls. The study reveals that bat vocalizations can be compared to death metal growls, highlighting the animals' unique ability to produce a wide range of sounds.
Researchers from the Max Born Institute report on a new light source generating ultrashort infrared pulses beyond 10 µm wavelength, exhibiting high potential for vibrational spectroscopy and optical materials processing. The system demonstrates excellent beam quality and stability, with output power and repetition rate scalable.
A new research project at Aarhus University aims to develop intelligent drones that can detect ice on turbine blades, optimizing energy production and expanding market opportunities. The project has the potential to reduce energy losses by up to 80% and enable wind farms to operate in colder climates.
Scientists have developed a method to accurately measure the thermal expansion coefficient of 2D materials when heated, which could help engineers design next-generation electronics. The approach uses laser light to track vibrations of atoms in the material, allowing for precise measurements and confirming theoretical calculations.
Scientists review natural structures with exceptional properties, such as wood, bones, spider webs, and sea sponges. These hierarchical structures can be used to design innovative materials for vibration damping and acoustic wave control.
A new study by MIT researchers shows that mobile phones can collect useful structural integrity data while crossing bridges. The study found that information about bridge vibrations can be extracted from smartphone-collected accelerometer data, and that this method could add years to a road bridge's lifespan. By leveraging crowdsourced...
A research team developed a smart mask integrating an ultrathin soundwave sensor that detects breathing, coughing, and speaking sounds. The mask uses machine-learning algorithms to identify respiratory diseases and improve public health by enabling prolonged monitoring.
Researchers at the University of Washington have developed a new hearing screening system using low-cost earbuds and smartphones, which performed as well as commercial devices and correctly identified patients with hearing loss. The tool can be used in countries where screening is not accessible due to high device costs.
Researchers at the University of Technology Sydney have extended the theory of acoustic levitation to account for asymmetrical particles, which is more applicable to real-world experience. This new understanding enables precise control and sorting of tiny objects using ultrasonic waves.
Researchers at the Max Born Institute have used novel ultrashort soft X-ray spectroscopy to study the fate of molecular nitrogen when an electron is kicked out. They found that the B state has a similar degree of excitation as the X state, contradicting previous models. Instead, a coherent interplay between light fields enables lasing ...
A new study reveals that red-eyed treefrogs use bimodal acoustic calls, combining sound with plant-generated vibrations to convey messages. Female frogs prefer calls with both sound and vibration, while male frogs become more aggressive when feeling the vibrations of rival calls.
Researchers confirmed a key aspect of Professor Steen's theory on how liquids interact with surfaces, showing that water droplet mobility can be controlled by vibration frequencies. The study, conducted on the International Space Station, used microgravity to demonstrate the impact of surface roughness on contact line movement.
Researchers have successfully mapped the potential energy surfaces of individual water molecules in liquid water at room temperature and normal pressure. This breakthrough uses X-ray analysis and statistical modeling to reveal the complex behavior of water molecules, shedding light on their role as a solvent.
A new camera system developed by Carnegie Mellon University researchers can reconstruct sound vibrations with extraordinary accuracy, capturing isolated audio without inference or a microphone. The dual-shutter vibration-sensing system uses two cameras and a laser to detect high-speed, low-amplitude surface vibrations.
The study reveals the sing saw uses a surprising effect to create its distinct tone: when curved into an S-shape, energy vibrates in a confined area producing a clear, long-lasting sound. This principle can be applied to design high-quality resonators for various applications.
Researchers developed an audio-tactile sensory substitution device (SSD) that converts sound frequencies to vibrations, significantly improving speech comprehension in noisy environments. The technology has shown promise in training hearing-impaired individuals to better understand speech.
A team of researchers has developed a MEMS scanning lidar that can detect objects reliably even in shaky environments. The long-range MEMS lidar prototype uses a digital controller to suppress errors caused by vibrations, allowing for stable 3D imaging and object detection.
A new fabric developed by MIT engineers can detect subtle heartbeat features and the direction of sudden sounds, enabling real-time monitoring of vital signs. The fabric works like a microphone, converting sound vibrations into electrical signals.
Researchers developed a new technique called dual-detection impulsive vibrational spectroscopy (DIVS) to measure two distinct types of vibrational signals. DIVS enables synchronous measurement of THz- and fingerprint region vibrations, offering high temporal resolution for real-time chemical analysis.
Researchers from the University of Birmingham have successfully used a quantum gravity gradiometer to detect an object hidden below ground, marking a significant milestone in the development of this technology. The breakthrough could lead to faster, cheaper, and more comprehensive underground mapping, with potential applications in ind...
Researchers have found a new method to induce the piezoelectric effect in materials that are otherwise not piezoelectric. This breakthrough could lead to the development of biocompatible materials with properties similar to common lead-containing materials, and has the potential to expand the design of new electromechanical devices.
University of Utah researchers measured 14 rock towers in Utah to predict their seismic stability. They used mathematics that describe built structures' resonance to create a dataset, allowing for predictions without climbing the towers.
Researchers at NIST developed an instrument to image acoustic waves over a wide range of frequencies with unprecedented detail. The new instrument captures these waves by relying on an optical interferometer, allowing for the creation of three-dimensional movies of microresonators' vibrational modes.
Researchers have discovered that the Matterhorn sways at a frequency of 0.42 Hertz, oscillating roughly in a north-south direction, with similar frequencies in an east-west direction. The mountain's summit experiences amplified vibrations up to 14 times stronger than the reference station at its base.
The Matterhorn oscillates at two frequencies, with movements up to 14 times stronger at the summit than at the foot. Researchers detected these subtle vibrations using seismometers, which are also found in bridges and high-rise buildings, revealing a broader phenomenon.
Researchers at City University of Hong Kong have discovered a new type of sound wave that vibrates transversely and carries both spin and orbital angular momentum like light. This finding provides new degrees of freedom for sound manipulations, enabling unprecedented acoustic communications and sensing capabilities.
Researchers use speaker shakers to generate vibrations in a plate, creating sound waves that constructively interfere at the target minifigure. The focused energy knocks over the single Lego minifig without disrupting the surrounding minifigs.
Researchers at TU Delft developed a nanomechanical sensor that can function at room temperature using a spiderweb-inspired design. The breakthrough has large implications for studying gravity and dark matter, as well as quantum internet, navigation, and sensing.
Researchers at Georgia State University found that vibration training improved both physical and cognitive abilities in adults with MS. Cognitive function improvements included enhanced memory capacity and executive function.
Research finds that fruit flies fall asleep when moved in slow circles, and this effect continues in flies missing key circadian clock genes. The study also reveals the role of nanchung receptors, which are sensitive to vibrations and motion, in inducing daytime sleep.
Researchers create a novel framework for generating and detecting Lamb waves in transparent materials without damaging the sample. They use laser-induced plasma shock waves and high-speed polarization cameras to spot microscopic scratches, demonstrating potential for non-contact damage detection.
Researchers at Aalto University created intricate shapes like letters by manipulating tiny metal balls with vibrating plates and energy fields. The smart algorithm efficiently guided the particles to achieve desired shapes, inspired by natural phenomena like wind and water.
Scientists at Huazhong University of Sci. & Tech. present a soft and disordered hyperuniform elastic metamaterial (DHEM) that achieves remarkably high efficiency vibration concentration in broad frequency band, reaching up to ~4000 enhancement factor. The DHEM design covers a range of frequencies from ~100 Hz to ~10 kHz.
Researchers at NIST demonstrate a faster and more accurate way to calibrate microphones using lasers. The new technique surpasses the current industry standard, offering potential for commercial applications in industries like factories and power plants.
A novel method for imaging vibrations and movements of atoms in catalysts has been developed by a collaboration of internationally leading researchers. The new analytical method reveals a dynamic behavior of the atoms, contrary to the long-held expectation that atoms in nanoparticles are static during observations.
Researchers have observed a unique phenomenon where vibrations in a nickel oxide material increase with cooling, leading to the formation of faster fluctuations and ordered regions. This behavior is unusual and differs from the expected trend, which is that less thermal energy leads to more fluctuations freezing and order growing.
Researchers at Ohio State University developed built-in resonators that can be cut into walls or vehicle material to suppress vibrations and reduce noise. The design has potential applications in soundproofing walls and building airplane frames that minimize sound intrusion.
Graphene drum technology induces coherent emission of sound energy quanta, enabling new quantum optomechanical sensors and transducers. The device amplifies external vibrations at specific frequencies, showing potential applications in classical and quantum sensing.
A new non-shaking system was developed to reduce both vibration and shaking in transportation, protecting precision equipment and biological medical products. It combines JAXA's vibration isolation technology with Tamagawa Seiki's stabilization and anti-rocking technology.
A collaborative research group successfully controlled the magnetization of a ferromagnetic thin film using circular vibrations of surface acoustic waves. The discovery opens up new possibilities for combining and developing acoustic and magnetic devices.
MIT researchers have designed a sharp-tipped robot finger with tactile sensing to identify buried objects in granular material. The Digger Finger successfully sensed the shapes of submerged items and can penetrate sand and rice, with potential applications for finding buried cables or disarming bombs.
Scientists at DGIST have discovered a novel way to control the alignment of magnetic atoms within antiferromagnetic materials using mechanical vibration and a magnetic field. This process replaces traditional heating and cooling methods, enabling more precise control over magnetic spins in spintronics devices.
A new process has led to the development of high-performance energy absorbing systems that can be used in various applications, including vehicle crash safety, military armoured vehicles, and human body protection. The material's unique nanoscale mechanism enables it to absorb more mechanical energy per gram with good reusability.
Researchers at Toyohashi University of Technology developed a virtual walking system that induces illusory walking sensations without actual limb movement. The system combines a head-mounted display, four vibrators, and a walking-avatar to simulate footsteps.
Researchers have developed ultrasonically oscillating needles that provide sufficient tissue samples for 21st century diagnostic needs, potentially reducing pain and trauma. The technology increases biopsy yields by 3 to 6 times compared to traditional needles, enabling high-tech cancer treatment options.
A Korean research team developed a technology generating various vibrations using LED light signals, allowing for localized and varied tactile sensations. The technology, developed by ETRI, is expected to be applied to industries such as automobiles and electronics, offering improved feedback and durability.
Researchers have discovered a way to twist material properties by stacking and slightly rotating 2D layers, which significantly influences the material's properties. This phenomenon, known as the Moiré effect, allows for control over phonon vibrations, potentially leading to new applications in materials science.
Researchers at MIT used computer simulations to model the mechanical response of coronaviruses to ultrasound vibrations. They found that frequencies between 25-100 megahertz triggered shell and spike collapse within a millisecond.
Scientists studied perylene diimide derivatives to understand their electrical behavior, finding that different molecular vibrations affect the speed of electrons. The breakthrough could lead to more efficient electronic materials, including applications for computers and energy storage.
Researchers at Shinshu University have developed an acoustic cloaking structure that can operate in both air and water. The design uses finite element analysis to optimize the material selection and acoustics properties, enabling functionality in a wide frequency band.
Scientists at the University of Chicago have developed a gel material that strengthens when exposed to vibration, increasing its strength by 66 times. The material selectively strengthens itself in specific areas where it is stressed to a higher degree.
A study by researchers at the University of Campinas investigated optomechanical coupling, creating a theoretical model that was validated by simulations and comparisons with experimental results. The researchers found that both dispersive and dissipative interactions occur in microcavities, which can contribute to advances in fields s...
Researchers from Shibaura Institute of Technology have developed a non-contact, non-destructive method to measure the firmness of soft fruits like mangoes. They use laser-induced plasma shockwaves and analyze the resulting Rayleigh waves to determine ripeness, providing a reliable way to indirectly assess fruit quality.
Researchers have gained insights into how tiny, powerful bubbles are formed by ultra-fast vibrations, which could improve dental hygiene devices and other technologies. The study's findings suggest that nanobubbles can form through boiling or cavitation processes, paving the way for future research.
A team of researchers at Penn State has developed a method to turn existing telecommunication infrastructure into a valuable resource for monitoring ground vibrations. By using fiber-optic distributed acoustic sensing technology, they can detect a wide variety of signal vibrations, including those caused by earthquakes, music concerts,...
Engineers from Erbil Technical Engineering College report on the effect of applied load intensity, steel reinforcement index amount and concrete strength on beam depth-span ratio. The study suggests modifying ACI codes to include additional parameters, enabling engineers to control beam deflection within defined limits.
Researchers have developed a novel spectroscopy technique to measure the wave properties of molecular vibrations, achieving resolution capacity 10,000 times higher than previous methods. The experiment confirms quantum theory's prediction regarding atomic nuclei behavior with high accuracy.
Researchers at SISSA have discovered a new theory for how we perceive the passage of time in relation to sensory stimuli. The study proposes that the experience of elapsed time is generated when the neuronal representation of a stimulus is collected and summed by an accumulator, explaining why we feel longer vibrations as stronger ones.
A new study reveals that weather patterns driven by El Nino influence predictable fluctuations in deer populations and synchronize different deer populations across the state. The researchers found that these synchronized population cycles can drive cycling patterns in nature.
Researchers developed a new theoretical model explaining the spread of vibrations in disordered materials, showing that sound waves lose coherence on shorter length scales. This discovery may lead to the design of heat- and shatter-resistant glass for smartphones and tablets.