
Tweezers of sound can pick objects up without physical contact
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Tokyo, Japan - Researchers from Tokyo Metropolitan University have developed a new technology which allows non-contact manipulation of small objects using sound waves. They used a hemispherical array of ultrasound transducers to generate a 3D acoustic fields which stably trapped and lifted a small polystyrene ball from a reflective surface. Although their technique employs a method similar to laser trapping in biology, adaptable to a wider range of particle sizes and materials.
Researchers from Nanyang Technological University, Singapore (NTU Singapore), in collaboration with French specialty materials leader Arkema, have developed a tougher, safer bicycle helmet using a combination of materials. The new helmet prototype has higher energy absorption, reducing the amount of energy transferred to a cyclist's head in the event of an accident and lowering the chances of serious injury.
Although in-school transmission of COVID-19 among K-12 students is low when safeguards are in place, the risk of acquiring COVID-19 during school bus transportation is unclear. A study published in the Journal of School Health reports on the bus transport experience of an independent school in Virginia.
Uber and Lyft are popular on-demand ways to travel, but does that mean trains and buses are a thing of the past? Travelers prefer different modes of transportation at different times. So how can all these modes co-exist and do so successfully? New research in the INFORMS Journal Transportation Science has created a model and an algorithm to redistribute transit resources based on commuter preferences resulting in millions in savings.
Retail traders often fear that reducing the amount of urban space made available for parking private vehicles would have a negative effect on their businesses. A survey conducted by researchers from the Institute for Advanced Sustainability Studies (IASS) on two shopping streets in Berlin shows that traders have a skewed perception of their customers' mobility habits. The findings of this research will facilitate better-informed decision-making around urban land-use planning.
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Western University bioengineer Kibret Mequanint and his international collaborators have found a novel use for snake venom: a body tissue 'super glue' that can stop life-threatening bleeding in seconds.
Access to high-quality public transportation can make communities more equitable by increasing access to critical opportunities such as employment, health care and healthy food, particularly for low-income individuals and people of color. A new paper published today in the Transportation Research Record identifies six broad categories of equity-advancing practices that reach beyond existing guidelines and could be widely employed by public transit agencies nationwide.
Scientists show for the first time with a VR simulation and neurophysiology measurements that playback of slow music inside road tunnels keeps drivers alert, relaxed, and focused on safety. For maximal vigilance, alarm sounds like sirens should be played at the tunnel's entry and exit, where the risk of accidents is greatest. This study by the open access publisher Frontiers shows that background music has a role to play in preventing road accidents.
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