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Knowridge
1d
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Image Credit: Knowridge
New smart, see-through “skin” could feel magnetism like a human
- Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have developed a new kind of electronic skin (e-skin) that is ultra-light, thin, transparent, and breathable.
- The e-skin can sense and track magnetic fields with just one global sensor, simplifying the technology compared to older versions that require multiple sensors and large batteries.
- It is built using a super-thin, flexible membrane with a magnetosensitive layer that changes its electrical resistance when a magnetic field is detected.
- The e-skin has various potential applications, such as interacting with virtual reality environments, operating smartphones in challenging conditions, and improving robotic performance in complex environments.
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Knowridge
1d
95
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Graphene breakthrough could power future 6G networks and see through walls
- Researchers at The University of Manchester have developed a technology using graphene to build a smart surface that can control light waves.
- The programmable surface made of tiny pixels can shape and control terahertz and millimeter waves, enabling faster 6G wireless networks and improved imaging tools.
- The device can change the direction of THz beams, create grayscale holograms, shape beams for advanced data transmission, and build a single-pixel THz camera to image hidden metallic objects.
- The technology can be produced using regular display manufacturing tools and has the potential to bring high-speed 6G wireless and advanced security imaging into everyday use.
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Knowridge
2d
58
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Scientists create wearable device that lets you feel virtual worlds like real life
- Scientists at Northwestern University have created a wearable device that mimics the complex sense of human touch.
- The device can press, pull, slide, twist, and stretch the skin in multiple directions, providing a more realistic sense of touch.
- It is a small, wireless device powered by a rechargeable battery and connects to phones and VR headsets using Bluetooth.
- The breakthrough device could enhance virtual reality experiences, help blind people navigate, and enable those with hearing impairments to feel music through their skin.
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Knowridge
4d
101
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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
5d
307
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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
6d
61
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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
6d
173
Image Credit: Livescience
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
7d
270
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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
14h
109
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Scientists use DNA to build tiny 3D electronic devices that assemble themselves
- Scientists at Columbia Engineering have developed a technique using DNA to build tiny 3D electronic devices that can assemble themselves.
- This method allows for the creation of smaller, smarter, and more powerful electronics, particularly for advanced technologies like artificial intelligence.
- Traditional top-down manufacturing methods for creating 3D electronics have been slow and expensive, but this new bottom-up approach inspired by nature uses DNA strands to form the base structure.
- The researchers successfully created self-assembled 3D electronic devices, such as light sensors, by guiding DNA shapes to link together to form 3D structures, proving the effectiveness of the method.
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Knowridge
1d
183
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Everything you say to an Alexa speaker will be sent to Amazon—starting today
- Amazon has disabled two key privacy features in its Alexa smart speakers to introduce artificial intelligence-powered 'agentic capabilities' and generate profit.
- Starting March 28, all audio recordings from Alexa devices will be sent to the cloud, impacting personalization features if recordings are not saved.
- Voice assistants like Alexa function by detecting a 'wake word,' recording commands, and matching them to actions using natural language understanding.
- Amazon is transitioning to processing Alexa device recordings in the cloud for improved accuracy over on-device processing.
- High-end Echo models previously had a 'Do not send voice recordings' setting for local processing, but this feature is now disabled, sending all recordings to the cloud.
- Users can choose whether to save or delete recordings, with saved recordings used for Amazon's Voice ID and personalized user experiences.
- A trade-off between privacy and functionality arises as users decide whether to enable features like Voice ID by saving recordings or maintaining privacy by not saving them.
- Amazon looks to monetize Echo devices after significant losses, investing in generative AI like Alexa+ for enhanced capabilities such as booking flights.
- Amazon plans to profit from Alexa+ through subscriptions and acting as a go-between for service providers, reminiscent of its e-commerce platform model.
- Users are advised to review Alexa's privacy settings in app for data management and weigh privacy concerns against improved functionality when using Alexa+ or seeking privacy-focused alternatives like Home Assistant Voice Preview.
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Knowridge
2d
349
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Signal is not the place for top secret communications, but it might be the right choice for you
- Signal, a secure messaging app, gained attention when top White House defense and national security leaders were found using it for discussions about plans for an attack on targets in Yemen.
- Signal's popularity among government officials, activists, and journalists is due to its end-to-end encryption, which ensures that no one, including Signal itself, can read intercepted messages.
- However, end-to-end encryption is not the only consideration when choosing a secure messaging app, and there is no such thing as perfect security.
- Factors to consider when selecting a secure messaging app include encryption, metadata privacy, available features, open-source code, decentralized server network, and the company's data collection practices.
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Knowridge
3d
377
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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
4d
177
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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
4d
60
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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
1w
25
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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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