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Knowridge
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Why e-scooter accidents happen – and how to prevent them
- A study from Chalmers University of Technology in Sweden reveals that risky rider behavior is the primary cause of e-scooter accidents.
- Researchers reviewed data from nearly 7,000 trips on rented e-scooters and identified 19 crashes and 42 near-crashes.
- The study found that 20% of serious accidents were caused by riders deliberately creating danger or riding recklessly.
- To enhance safety, researchers suggest integrating warning technology, lowering speed limits in high-risk areas, and emphasizing rider education.
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Knowridge
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Your smartwatch might be a powerful heart health tool
- A new study suggests that smartwatches can assess heart health by using a metric called daily heart rate per step (DHRPS).
- The DHRPS combines average daily heart rate and total steps per day to provide insights into heart fitness.
- Researchers found that a higher DHRPS was linked to increased risks of Type 2 diabetes, heart failure, high blood pressure, and coronary atherosclerosis.
- The study analyzed data from nearly 7,000 adults and showed that DHRPS predicted heart-related conditions better than individual metrics.
- DHRPS was also found to be more closely related to heart performance during exercise than traditional smartwatch data.
- This new metric could help identify individuals who may benefit from additional testing or heart-strengthening exercises.
- Researchers believe that with further testing and refinement, DHRPS could complement existing methods for detecting heart problems.
- While promising, the study is in its early stages, and more research is needed to confirm its accuracy and long-term usefulness.
- Overall, the study hints at a future where everyday wearables could play a significant role in preventing cardiovascular diseases by providing early warnings.
- The findings emphasize the potential for accessible and practical health monitoring using existing smartwatch data.
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Brighter Side of News
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Transparent wood looks to revolutionize home construction and personal electronics
- Researchers have developed transparent wood as a sustainable alternative for plastics and glass in various applications like electronics and construction.
- The process of making transparent wood involves removing lignin and hemicellulose from wood and filling the pores with natural materials like egg whites and rice.
- Transparent wood offers advantages like biodegradability, thermal insulation, and impact resistance over traditional glass.
- The material shows promise for use in windows, building walls, solar panels, and electronic devices, potentially reducing environmental impact and production costs.
- Transparent wood demonstrates better thermal performance, staying cooler in heat compared to glass, which can lead to energy savings in buildings.
- Adding silver wires to transparent wood enables electrical conductivity, paving the way for biodegradable electronics such as wearable sensors and solar cells.
- Challenges for transparent wood technology include improving transparency, strength, and exploring different wood types and filling mixtures for optimal properties.
- The material's simplicity, biodegradability, and affordability make it an attractive option for sustainable architecture and eco-friendly products.
- Transparent wood could revolutionize industries by offering a renewable, biodegradable alternative to plastics, reducing environmental harm and production costs.
- The research on transparent wood's development and potential applications will be presented at the spring meeting of the American Chemical Society (ACS).
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Knowridge
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New 3D-printed robots walk without wires, electronics, or batteries
- Researchers at the University of California San Diego have developed 3D-printed robots that can walk without wires, electronics, or batteries.
- The robots are made from a single material, printed in one piece using a 3D printer and are powered by a small cartridge of compressed gas.
- They can function in environments where traditional electronics wouldn't work, such as high radiation areas or space, and can walk on different surfaces and even underwater.
- The team plans to work on storing the compressed gas within the robot and using eco-friendly materials in future iterations.
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Knowridge
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Scientists create first real-time hologram chip that turns 2D video into 3D holograms
- Korean researchers at the Electronics and Telecommunications Research Institute (ETRI) have developed a Real-Time Holography Processor (RHP).
- The RHP chip can turn 2D videos into full-color, real-time 3D holograms with 4K resolution and 30 frames per second.
- The chip uses high-speed high-bandwidth memory (HBM) and performs complex math to simulate light wave movement, making the process quick and energy-efficient.
- The goal is to create an even better chip for everyday holographic displays, bringing real-time holograms into homes, schools, and workplaces.
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Knowridge
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New brain-like memory chips could help AI remember better
- Scientists have developed a new type of memory chip called memristors.
- Memristors work similar to brain cells and can help solve the problem of 'catastrophic forgetting' in AI.
- These chips can keep old information while learning new things, just like our brains.
- The new memristor design is more reliable, durable, and works well at lower voltages.
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Livescience
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China's new 2D transistor could soon be used to make the world's fastest processors
- Researchers in China have created a new silicon-free transistor, with potential to make processors up to 40% faster while reducing energy consumption by 10%.
- The new two-dimensional silicon-free transistor, called gate-all-around field-effect transistor (GAAFET), wraps the gate around all four sides of the source.
- The unique architecture of the GAAFET transistor allows for better electrostatic control and potential improvements in performance and efficiency.
- The use of bismuth oxyselenide as the semiconductor in the transistor enhances flexibility, carrier mobility, and energy efficiency.
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Knowridge
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New AI could turn meal photos into instant nutrition facts
- Researchers from NYU Tandon School of Engineering have developed an AI system that can recognize meals from photos and provide a full nutritional breakdown.
- The smart food scanner uses an AI image recognition tool called YOLOv8 to identify different types of food, estimate portion sizes, and calculate the nutritional content.
- The AI system has an accuracy rate of around 80% and is currently a prototype, but it has the potential to be expanded for everyday health tracking and used by healthcare providers.
- The tool aims to make healthy eating easier and smarter, helping people manage their weight, diabetes, and other diet-related health concerns.
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Knowridge
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E-scooters could help make cycling safer on the roads, study finds
- A new study suggests that e-scooters have contributed to a 20% drop in bicycle collisions on the roads.
- The research, based on UK police records, compared areas with e-scooter rental schemes to those without.
- The decrease in bike accidents in areas with e-scooter programs supports the theory of 'safety in numbers,' promoting cautious driving.
- This study may encourage more cities to support micromobility options for both convenience and road safety.
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Knowridge
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Tiny new sensor could help stop battery fires before they start
- Scientists have developed a new sensor to prevent fires and explosions caused by lithium-ion batteries.
- The sensor is designed to detect ethylene carbonate (EC) gas, which is released when the battery is damaged or overheated.
- The sensor uses a covalent organic framework (COF) material, called COF-QA-4, to detect EC gas at low levels.
- This low-cost and energy-efficient sensor could be used in electric vehicles and other devices to provide early warnings and prevent accidents.
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Eletimes
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Breaking Boundaries with Photonic Chips and Optical Computing
- Photonic chips and optical computing are ushering in a new era by leveraging light for high-performance computing and data processing.
- Photonic chips use photons for information transmission, offering advantages like speed, energy efficiency, and parallel processing over traditional electronics.
- Key components of photonic chips include waveguides, modulators, detectors, and resonators for advanced signal processing.
- Optical computing, with its speed, low energy consumption, and massive parallelism, aims to revolutionize information processing and reduce signal crosstalk.
- Core technologies enabling photonic computing include silicon photonics, optical logic gates, neuromorphic computing for AI acceleration, and quantum photonics for secure computation.
- Applications range from data centers and AI acceleration to telecommunications, healthcare, defense, and aerospace, showcasing the versatility of photonic computing.
- Challenges such as fabrication complexity, hybrid architectures, software development, and energy efficiency must be addressed for broader adoption of photonic computing.
- Photonic computing signifies a paradigm shift with its speed, efficiency, and scalability, promising transformative impacts on various industries and information processing.
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Knowridge
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Solid-state lithium batteries may not be the game-changer we expected
- A recent study suggests that solid-state lithium metal batteries using lithium lanthanum zirconium oxide (LLZO) as a solid electrolyte do not significantly increase energy density compared to current lithium-ion batteries.
- The use of LLZO results in only a small improvement in energy density, achieving 272 Wh/kg compared to the 250-270 Wh/kg of lithium-ion batteries.
- LLZO faces challenges such as weight, brittle nature, manufacturing difficulty, and issues with lithium dendrites.
- Researchers propose hybrid solutions, such as LLZO-in-polymer composite electrolytes, and quasi-solid-state batteries to improve energy performance, reduce weight, and address practical engineering issues.
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Knowridge
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Smart coffee-making robot shows the future of AI-powered machines
- A team of scientists has developed an AI-powered robot that can make coffee in a busy kitchen.
- The robot combines advanced AI, sensitive sensors, and fine motor skills to adapt to its environment.
- It understands verbal instructions, scans the kitchen, measures and mixes coffee, and can adapt to unexpected changes.
- This breakthrough opens up possibilities for intelligent robots in various real-world environments.
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Knowridge
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Scientists develop advanced materials to improve power electronics
- Scientists are working to develop better materials for power electronics to reduce energy loss and improve performance.
- Research focuses on wide-bandgap materials such as aluminum gallium nitride (AlxGa1-xN), which can handle more power while reducing heat and electrical losses.
- A team of researchers from NREL, Colorado School of Mines, and Oak Ridge National Laboratory found that growing AlxGa1-xN on tantalum carbide (TaC) substrate helps reduce defects and improve energy efficiency in power electronics.
- Combining experimental and computational research, scientists are making advancements in power electronics that could lead to more efficient and powerful electronic devices.
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Pymnts
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Nvidia to Buy ‘Several Hundred Billion’ Dollars’ Worth of US-Made Electronics
- Nvidia plans to purchase 'several hundred billion' dollars' worth of US-made electronics over the next four years.
- The chip designer will source products from suppliers like TSMC and Foxconn, improving supply chain resiliency and avoiding tariffs.
- The move allows Nvidia to reduce dependence on TSMC's facilities in Taiwan and mitigate risks related to China and potential US tariffs.
- Nvidia CEO believes that the Trump administration's policies will support the growth of AI and data centers in the US.
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