Tag

Carbon Nanotubes

All articles tagged with #carbon nanotubes

technology24 days ago•72 min saved

Hair-thin nanotube shield could protect future space tech from radiation

Scientists have developed a stretchable, ultra-thin shielding material made from carbon and boron nitride nanotubes that blocks electromagnetic radiation (99.999%) and neutron radiation (72%), and can be 3D-printed. When formed in a honeycomb shape, shielding improves by about 15%. This lightweight, flexible material could protect equipment and astronauts across satellites, space stations, and other space tech, with the study published in Advanced Materials.

via Space|

#boron-nitride-nanotubes #carbon-nanotubes #nanomaterials

science1 month ago•6 min saved

Doped nanotube fibers push toward copper-like wiring performance.

Researchers doped bulk double-walled carbon nanotube fibers with tetrachloroaluminate (AlCl4−), boosting mean conductivity about 10x on average (up to 15x in the best fibers) and reaching roughly 70% of aluminum’s conductivity; when normalized by density, the doped fibers can outperform copper, suggesting potential for lightweight, high-capacity wiring. However, the dopant is air-sensitive and short-lived (weeks) unless the fibers are polymer-coated, posing stability and scalability challenges even as the approach identifies a promising dopant strategy.

via Ars Technica|

#carbon-nanotubes #conductivity #copper

science4 months ago•9 min saved

Moon soil reveals naturally formed carbon nanotubes, reshaping space manufacturing

Scientists analyzing lunar samples from China’s Chang’e-6 mission identified single-walled carbon nanotubes formed in situ on the Moon, likely created by micrometeorite impacts and iron‑catalyzed reactions under early volcanic and solar-wind conditions; this provides the first evidence that natural space environments can synthesize such nanostructures and suggests lunar resources could support future electronics manufacturing.

via Interesting Engineering|

#carbon-nanotubes #change-6 #in-situ-resource-utilization

science-and-technology5 months ago•3 min saved

Cambridge Reactor Recycles 99% of Gas for Hydrogen Fuel and Carbon

Researchers at Cambridge University have developed a multi-pass methane pyrolysis process that recycles 99% of gas to produce high-quality carbon nanotubes and clean hydrogen fuel without emitting CO2, significantly improving efficiency and reducing waste in hydrogen and nanotube production.

via Interesting Engineering|

#cambridge-university #carbon-capture #carbon-nanotubes

science6 months ago•3 min saved

Scientists Develop Ultra-Strong, Thin Bulletproof Fiber Superior to Kevlar

Scientists at Peking University have developed a new composite fiber combining heterocyclic aramid and aligned carbon nanotubes, resulting in a material that surpasses Kevlar in strength, toughness, and energy absorption, potentially leading to lighter and more effective protective gear.

via Phys.org|

#bulletproof-fiber #carbon-nanotubes #high-strength-materials

technology7 months ago•2 min saved

Top 5 Materials for Radar-Defying Fighter Jets

Researchers are exploring five advanced materials—metamaterials, graphene, MXene, carbon nanotubes, and ceramics—that could significantly enhance aircraft stealth capabilities by absorbing or deflecting radar signals, potentially making fighter jets nearly invisible to radar in the future.

via WION|

#advanced-ceramics #carbon-nanotubes #graphene

technology1 year ago•2 min saved

Carbon Nanotubes: The Future of High-Energy Clean Storage

Researchers are exploring carbon nanotubes as a potential alternative to lithium-ion batteries, offering three times more energy storage per unit mass and greater temperature resilience. These nanotubes, which are stronger than steel, could revolutionize energy storage in medical devices by harvesting energy from body movements. While not yet ready to replace lithium-ion batteries in consumer electronics, carbon nanotubes present a promising future for clean energy solutions.

via Yahoo! Voices|

#carbon-nanotubes #clean-energy #energy-storage

science-and-technology2 years ago•4 min saved

"Pollutant Key to Advancing Carbon Nanotube Films for Tech Applications"

Skoltech scientists have discovered that treating carbon nanotube films with nitrogen dioxide at 300 degrees Celsius significantly enhances their electrical conductivity, transparency, and stability. This fast, scalable, and wasteless technique could improve the performance of solar panels, touchscreens, and other devices, offering a superior alternative to current doping agents.

via Phys.org|

#carbon-nanotubes #doping-agents #nitrogen-dioxide

science-and-technology2 years ago•20 min saved

"Revolutionary Plasma Technology Enables High-Temperature Synthesis in Stable Atmospheric Conditions"

Researchers have developed a stable atmospheric-pressure plasma that enables extreme-temperature synthesis for various applications, including thin film deposition and carbon nanotube synthesis. The plasma, created using a novel electrode configuration, exhibits improved stability and avoids the instabilities typically associated with atmospheric plasmas. This breakthrough opens up new possibilities for high-temperature material synthesis and processing.

via Nature.com|

#atmospheric-plasma #carbon-nanotubes #extreme-temperature-synthesis

science-and-technology2 years ago•3 min saved

"Nanotube Revolution: Expanding the Family Beyond Carbon"

Researchers from Tokyo Metropolitan University have successfully engineered a range of new single-walled transition metal dichalcogenide (TMD) nanotubes with different compositions, chirality, and diameters by using boron-nitride nanotubes as templates. This breakthrough allows for the synthesis of diverse nanotube structures, providing insights into their growth mechanism and unique optical properties. The team also discovered randomly distributed chiral angles in the nanotubes, offering new understanding of the relationship between chirality and electronic states. The ability to create a variety of TMD nanotubes opens up possibilities for exploring their exotic properties and applications in semiconductors.

via Phys.org|

#boron-nitride-nanotubes #carbon-nanotubes #chirality

science-and-technology2 years ago•5 min saved

"Nanoscale Marvels: Harnessing Carbon-Based Quantum Technology"

Researchers at Empa, in collaboration with international teams, have successfully contacted individual graphene nanoribbons using carbon nanotube electrodes. Graphene nanoribbons, which have unique electrical, magnetic, and optical properties, hold great potential for quantum technology applications. The researchers overcame the challenge of accessing and contacting the extremely narrow nanoribbons by using carbon nanotubes of similar size. The success of this experiment opens up possibilities for studying fundamental quantum effects and developing applications in quantum switching, sensing, and energy conversion. Further research aims to manipulate different quantum states on a single nanoribbon and explore the use of nanoribbons as highly efficient energy converters.

via SciTechDaily|

#carbon-nanotubes #graphene-nanoribbons #nanoscale

technology2 years ago•5 min saved

Advancements in Carbon Nanotube Transistors: Scaling to Sub-10 nm Nodes

Researchers from Peking University and other institutes in China have demonstrated the scaling of carbon nanotube transistors to below sub-10 nm nodes, potentially outperforming silicon-based transistors. By implementing a new contact scheme called "full contact," the researchers were able to downscale the carbon nanotube transistors while maintaining their performance advantages. This breakthrough could lead to the development of smaller and more efficient carbon nanotube-based transistors, with implications for the advancement of electronics.

via Phys.org|

#carbon-nanotubes #electronics #scaling

science-and-technology2 years ago•3 min saved

"Fluorescent Nanotubes: Customized Biosensors for Bacteria and Virus Detection"

Researchers have developed modular optical sensors using fluorescent carbon nanotubes and DNA anchors to detect viruses and bacteria. The nanotubes are customized with DNA structures that create defects in their crystal structure, altering their fluorescence. By attaching detection units to the DNA anchors, the sensors can identify specific viral or bacterial proteins. The sensors demonstrated high selectivity and stability, making them suitable for diagnostic applications in complex environments.

via Phys.org|

#bacteria #biosensors #carbon-nanotubes

technology3 years ago•5 min saved

Revolutionary Coating Reduces Economic Losses from Friction and Wear.

Scientists at the Department of Energy's Oak Ridge National Laboratory have developed a coating made of carbon nanotubes that reduces friction in load-bearing systems with moving parts, such as vehicle drive trains and turbines, by at least a hundredfold. The coating reduces the friction of steel rubbing on steel to nearly zero, which could help reduce energy consumption and elongate the lifespan of systems. The ORNL coating could help reduce the US economy's annual loss of over $1 trillion to friction and wear, equivalent to 5% of the gross national product.

via Phys.org|

#carbon-nanotubes #friction #ornl

technology3 years ago•3 min saved

Bulletproof Suit Inspired by John Wick's Style

Bulletproof suits like the ones seen in the John Wick movies actually exist, but they don't have the magic physics-defying powers of the movie version. Most real-life body armor is made from Kevlar or similar ballistic fibers, but they are not completely bulletproof. A prototype Kevlar suit that supposedly cost a little under $100,000 to produce has been created, but carbon nanotubes from Garrison are the best option for a bulletproof suit. However, the laws of physics still apply, and serious damage is likely to occur even with a bulletproof suit.

via Hackaday|

#body-armor #bulletproof #carbon-nanotubes