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Friction

Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact.

Note: The above text is excerpted from the Wikipedia article "Friction", which has been released under the GNU Free Documentation License.

For more information, see the following related content on ScienceDaily:

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Control Over Friction, from Small to Large Scales

Dec. 1, 2023 — Friction is hard to predict and control, especially since surfaces that come in contact are rarely perfectly flat. New experiments demonstrate that the amount of friction between two silicon ...

Detailed Insight Into Friction: How Objects Start to Slide

Sep. 22, 2022 — Chemists and physicists shed light on a crucial aspect of friction: how things begin to slide. Using fluorescence microscopy and dedicated fluorescent molecules, they are able to pinpoint how and ...

Researchers Dynamically Tune Friction in Graphene

Sep. 28, 2023 — The friction on a graphene surface can be dynamically tuned using external electric fields, according to ...

Understanding Friction, the Unavoidable Enemy

July 25, 2022 — For machines with mechanical elements, friction is an unavoidable enemy. It is a major source of service failure and can reduce the lifespan of any machinery, from bicycles and cars to airplanes and ...

Discovery of a Fundamental Law of Friction Leads to New Materials That Can Minimize Energy Loss

Nov. 3, 2022 — Chemists and engineers have discovered a fundamental friction law that is leading to a deeper understanding of energy dissipation in friction and the design of two-dimensional materials capable of ...

Fighting Friction to Protect Machinery

Mar. 3, 2023 — Moving parts in mechanical come into regular contact, leading to wear and tear. Now, researchers have developed a contact control system, driven by artificial intelligence, to greatly reduce contact ...

New Law of Physics Helps Humans and Robots Grasp the Friction of Touch

Apr. 29, 2021 — Although robotic devices are used in everything from assembly lines to medicine, engineers have a hard time accounting for the friction that occurs when those robots grip objects - particularly in ...

Particles With 'Eyes' Allow a Closer Look at Rotational Dynamics

June 16, 2021 — An international team has developed spherical colloidal particles for the visualization of rotational dynamics. The two-color fluorescent particles have an off-center core that allows tracking of ...

Affecting Baseball Friction With Different Substances

Dec. 15, 2022 — In baseball, even the smallest detail can tip the scales in favor of the batter or the pitcher. A recent publication has highlighted how rosin powder helps maintain a more constant friction when ...

Humidity May Be the Key to Super-Lubricity 'Switch'

Jan. 11, 2023 — A material state known as super-lubricity, where friction between two contacting surfaces nearly vanishes, is a phenomenon that materials researchers have studied for years due to the potential for ...

Matter & Energy News

December 3, 2023

Printed Robots With Bones, Ligaments, and Tendons

Nov. 15, 2023 — For the first time, researchers have succeeded in printing a robotic hand with bones, ligaments and tendons made of different polymers using a new laser scanning technique. The new technology makes it possible to 3D print special plastics with ...

'Cooling Glass' Blasts Building Heat Into Space

Nov. 13, 2023 — Researchers aiming to combat rising global temperatures have developed a new 'cooling glass' that can turn down the heat indoors without electricity by drawing on the cold depths of space. The new technology, a microporous glass coating, can lower ...

Photonics Team Develops High-Performance Ultrafast Lasers That Fit on a Fingertip

Nov. 9, 2023 — Scientists demonstrate a novel approach for creating high-performance ultrafast lasers on nanophotonic chips. The new advance will enable pocket-sized devices that can perform detailed GPS-free ...

450-Million-Year-Old Organism Finds New Life in Softbotics

Nov. 6, 2023 — Researchers have used fossil evidence to engineer a soft robotic replica of pleurocystitids, a marine organism that existed nearly 450 million years ago and is believed to be one of the first echinoderms capable of movement using a muscular ...

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PicoRuler: Molecular Rulers for High-Resolution Microscopy

Dec. 1, 2023 — A team presents a groundbreaking advance for the world of high-resolution fluorescence microscopy: The innovative method enables researchers for the first time to use biomolecules as molecular rulers ...

Harvesting More Solar Energy With Supercrystals

Dec. 1, 2023 — Hydrogen is a building block for the energy transition. To obtain it with the help of solar energy, researchers have developed new high-performance nanostructures. The material holds a world record ...

Control Over Friction, from Small to Large Scales

A Color-Based Sensor to Emulate Skin's Sensitivity

Dec. 1, 2023 — In a step toward more autonomous soft robots and wearable technologies, researchers have created a device that uses color to simultaneously sense multiple mechanical and temperature ...

Photonic Chip That 'Fits Together Like Lego' Opens Door to Semiconductor Industry

Dec. 1, 2023 — A new semiconductor architecture integrates traditional electronics with photonic, or light, components could have application in advanced radar, ...

Researchers Have Taught an Algorithm to 'Taste'

Dec. 1, 2023 — Incorporating human tastes into artificial intelligence makes it easier for wine buyers thirsting for the right wine. Researchers have shown that AI can accurately predict individual wine ...

To Help Autonomous Vehicles Make Moral Decisions, Researchers Ditch the 'Trolley Problem'

Dec. 1, 2023 — Researchers have developed a new experiment to better understand what people view as moral and immoral decisions related to driving vehicles, with ...

Scientists Use A.I.-Generated Images to Map Visual Functions in the Brain

Nov. 30, 2023 — Researchers have demonstrated the use of AI-selected natural images and AI-generated synthetic images as neuroscientific tools for probing the visual processing areas of the brain. The goal is to ...

Smart Microgrids Can Restore Power More Efficiently and Reliably in an Outage

Nov. 30, 2023 — A new AI model that optimizes the use of renewables and other energy sources outperforms traditional power restoration techniques for islanded ...

Researchers Develop Novel Deep Learning-Based Detection System for Autonomous Vehicles

Nov. 30, 2023 — Autonomous vehicles require object detection systems to navigate traffic and avoid obstacles on the road. However, current detection methods often ...