Articles tagged with Applied Acoustics
Harvard researchers create first topological acoustic transistor, utilizing sound waves to control flow on and off. The device demonstrates scalable and controllable 'acoustic switches' with potential applications in efficient noise reduction, ultrasound imaging, and more.
The Seattle Space Needle renovation incorporated acoustic designs to limit sound transmission, enhancing visitor experience. Acoustic materials and effective reverberant sound control were selected for the observation levels and restaurant.
Researchers from The University of Tokyo Institute of Industrial Science have found that drones can be used as communication bases with underwater robotic devices (AUVs) for ocean surveys. UAVs offer high-speed observations, mobility, and resistance to ocean currents, making them suitable candidates for this application.
Researchers developed an attention-based deep neural network to detect multiple ship targets, exceeding conventional networks' performance. The model focused on inherent features of the two ships simultaneously, outperforming traditional approaches.
A University of Sussex research team has developed a personal sound projector that can track a moving individual and deliver an acoustic message in real-time. The system uses a low-cost camera to focus sound on a target, creating a sphere of sound around 6cm in diameter.
Researchers at Purdue University have demonstrated the theoretical existence of thermoacoustics in solids, which could lead to the development of solid-state engines and refrigerators. The technology harnesses temperature oscillations and sound waves to generate energy, making it suitable for harsh environments like outer space.
Scientists have created graphene audio speakers for mobile devices with a sound quality comparable to existing systems. The new fabrication method uses ultra-thin graphene aerogels that don't vibrate and can be mass-produced for use in mobile devices.
Researchers have developed self-powered sensors that can harness heat from nuclear reactors to transmit data, addressing a critical monitoring issue. The sensors use thermoacoustic technology, exploiting the interaction between heat and sound waves to operate without electronic power or moving parts.
Professor Artur Jaworski receives Royal Society Industry Fellowship to apply thermoacoustic technology to improve efficiency of energy sources. He aims to integrate devices into European Thermodynamics Ltd products to widen range and enhance performance.
A new imaging technique called near-field thermoacoustics has the potential to benefit medical practitioners and biology researchers. The technique uses harmless electromagnetic radiation to create high-contrast images of normal tissues, tumors, and other pathological changes.
Researchers have designed a traveling-wave engine that converts 18% of heat source energy into electricity, outperforming current thermoelectric devices. The device's high reliability and efficient energy conversion make it suitable for deep space probes.
Penn State's new thermoacoustic chiller uses helium gas to keep ice cream in delicious condition without damaging the atmosphere. The technology has potential for widespread use in applications where chemical refrigeration is difficult or banned due to global warming.
A team of researchers at Penn State has developed a compact chiller that uses sound waves to cool ice cream, achieving temperatures below freezing point with minimal energy consumption. The innovative system, powered by high-amplitude sound energy, has the potential to revolutionize the way we produce and consume refrigerated foods.
Researchers at Penn State have developed a small 'thermoacoustic refrigerator' that uses sound energy to generate cooling, potentially replacing chemical refrigerants. The device operates near resonance frequencies and achieves efficiencies as high as 89% without lubricants or sliding seals.
Researchers at Penn State have developed a compact freezer case using sound waves to substitute chemical refrigerants, reducing greenhouse gas emissions. The Navy has funded the project and is exploring its potential for distributed cooling systems on carriers.