Articles tagged with Nanotubes
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Researchers have created digital switches using graphene-nanotube hybrids, outperforming existing graphene-based switches. The material's lopsided band gaps create a potential barrier that stops electrons, enabling high-speed switching.
Researchers at Rice University have found that three-dimensional boron nitride structures can efficiently control heat flow in electronics by slowing down phonon transfer between layers. These structures, composed of hexagonal boron nitride sheets and boron nitride nanotubes, can be tuned to create thermal switches or rectifiers.
Scientists at University of Michigan and University of Texas Southwestern Medical Center discovered microscopic nanotubes facilitating cell-to-cell communication in stem cells. The findings suggest that these structures may play a crucial role in retaining stem cell identities during division.
Rice University researchers have developed a new method to create valuable graphene nanoribbons by grinding carbon nanotubes, eliminating the need for harsh chemical solutions. This solid-state process enables strong chemical coupling between nanostructures and produces novel forms of nanostructured products with specific properties.
The study demonstrates the use of DNA nanotechnology to position arrays of hundreds of identical silver clusters with tunable fluorescent properties. This approach enables controlled assembly of photonic arrays, opening up new possibilities for sensing and imaging applications.
Researchers at Ohio State University have developed a nano-coated mesh that repels oil but allows water to pass through. The mesh has potential applications in cleaning oil spills and tracking oil deposits underground.
Scientists discovered that bacteria use direct connections to exchange nutrients, rather than releasing them into the environment. The study found that gut microbe E. coli forms unique nanotubes to connect with other bacteria.
Researchers at McGill University have developed a new DNA nanotube assembly method that allows for better control over size and structure. This breakthrough could lead to applications in opto-electronics and smart drug-delivery systems.
Researchers have developed gold nanotubes that can selectively destroy cancer cells while imaging tumors, using near-infrared light to convert to heat. The technique has the potential to enhance conventional treatments with minimal toxicity.
Researchers at TU Darmstadt develop a green method to produce gold nanotubes, suitable for building sensors to measure hydrogen peroxide, with potential applications in medical research and diagnosis. The production process is energy-efficient and uses non-toxic chemicals.
Rice University scientists have developed a novel cathode for dye-sensitized solar cells using graphene/nanotube hybrids, improving efficiency and reducing costs. The new material has a huge surface area, allowing for more efficient electron transfer and better contact with the electrolyte.
Scientists have measured high-quality factors of up to 5 million in carbon nanotube mechanical resonators, outperforming previous records. This breakthrough enables the development of ultra-sensitive sensors and quantum systems, such as magnetic resonance imaging at the atomic level.
University of Oregon chemists use special microscope to visualize traps that disrupt energy flow in carbon nanotubes. The study provides a detailed view of internal structures of electronic waves trapped by external electrostatic charges.
A Northwestern University research team has created a new type of CNT solar cell that absorbs more sunlight, increasing efficiency by a significant margin. The polychiral CNT mixture is able to capture a broader range of solar-spectrum wavelengths, including near-infrared light.
Researchers at UC Riverside have developed a new lithium-ion battery material with over three times the energy storage capacity of current carbon-based anodes. This innovation has significant implications for industries like electronics and electric vehicles.
Researchers at Rice University have developed a new hybrid material by combining carbon nanotubes with graphene, resulting in improved electrical and mechanical properties. The 'rebar graphene' technique enables large, flexible, conductive sheets of graphene to be manipulated more easily, making it a potential replacement for indium ti...
Researchers found temperature and concentration effects on physical properties of combined materials, including tilt angle, polarisation, response time, and dielectric relaxation. Increasing nanotube concentration enhances certain properties but slows down others.
Rice University researchers conducted a two-year census of 4,500 possible cap formations for nanotubes, finding that the elastic energy landscapes involved in cap formation do not dictate the nanotube's chirality. Instead, other factors such as catalyst interaction and energy landscape play a crucial role.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf develop a simpler method to align DNA nanostructures on surfaces, enabling the creation of self-aligned nanotubes with potential applications in electronic circuits. The technique uses electrostatic interactions and natural pattern formation to achieve alignment with high yield.
Researchers create multi-walled carbon nanotube-based coating that reduces foam flammability by 35%, preventing melting and pooling of the foam. This innovation aims to reduce the fire threat associated with burning soft furniture in homes by about a third.
Researchers at the University of Pittsburgh have developed a new form of 'zero-dimensional' carbon nanotube that could revolutionize the field of electronics. The shorter nanotubes are more dispersible and potentially easier to process for industrial and biomedical applications.
In a breakthrough discovery, Rice University researchers found that free electrons in metallic and doped carbon nanotubes create plasmons at terahertz frequencies, enabling the potential for advanced optoelectronic devices. This finding clarifies the origin of the previously observed terahertz peak in nanotubes.
Researchers at the University of Warwick have developed tiny protein tubes called Janus nanotubes, which can accurately channel drugs into cells. These nanotubes have a tubular structure that allows small molecules and ions to pass through, making them promising for water purification and drug development.
Researchers from Lawrence Livermore National Laboratory and ETH Zurich develop a new method of using carbon nanotubes to detect molecules, enabling trace detection of biological threats, explosives and drugs. The use of metal-coated nanotubes creates a 'jungle canopy' that amplifies the detection capabilities in surface-enhanced Raman ...
UPV/EHU researchers have developed a new source of light emitter based on defective boron nitride nanotubes, which can emit light across the whole spectrum from infrared to far ultraviolet and control it in a simple way. The device functions on the basis of natural defects in the nanotube, enabling controlled emission.
A new nanotube surface could improve the success rate of dental implants by reducing infection and promoting bone growth. The technology, developed by Michigan Technological University researchers, uses titanium dioxide nanotubes to create a surface that can combat bacterial infections and promote healing.
Researchers found that molecules of precise size can zip through nanotubes five times faster than those of a different size. This discovery could be used to design better membranes for desalination and develop sensors capable of detecting specific contaminants in water.
Rice University scientists have developed bismuth-filled nanotubes as a contrast agent for CT scans, producing brighter images than common iodine-based agents. The nanotube capsules are small enough to diffuse into cells and aggregate to produce high-contrast images.
Researchers at USC have developed a breakthrough method to control the atomic structure of carbon nanotubes, enabling the growth of nanotubes with specific attributes. The study's findings have significant implications for the development of next-generation materials and computers.
Researchers at New Jersey Institute of Technology have developed a lab-on-a-chip that can detect cells with sub-cellular resolution, enabling early detection of diseases such as viruses and cancer. The device uses carbon nanotubes to measure electrical properties of cells, offering a non-invasive and quick method for disease diagnosis.
Scientists have created a transistor without semiconductors, harnessing quantum tunneling for faster and more efficient electronics. The device uses nanoscale insulators and metals to control electrons at room temperature, promising miniaturization to virtually zero dimension.
Researchers have developed a spray-on mixture of carbon nanotubes and ceramic that has unprecedented ability to resist damage while absorbing laser light. The composite absorbs 97.5% of the light and tolerates 15 kilowatts of laser power per square centimeter for 10 seconds.
Researchers at the University of Pennsylvania have developed a nanotube-based diagnostic device that can detect Lyme disease bacteria in the blood, potentially leading to earlier diagnosis and treatment. The device uses laboratory-produced antibodies to bind to proteins from the organism, providing an electronic read-out of its presence.
Physicists at Technical University of Munich develop a method to store information in mechanical vibrations, reducing sensitivity to electrical interference. This innovation could lead to more powerful quantum computers by utilizing carbon nanotubes as quantum bits.
Researchers at Rice University have developed a nanotube-based photodetector that can detect light across the visible and infrared spectrum. The device, made from extra-long carbon nanotubes, promises to make possible new optoelectronic devices, solar cells, and specialized cameras.
Researchers successfully grew forests of carbon nanotubes on a sheet of graphene, creating a seamless three-dimensional structure with a massive surface area. This hybrid material offers great potential for electronic components like fast supercapacitors.
Researchers found that single-wall carbon nanotubes significantly reduced accumulated DNA damage in solutions with nanotubes present. The protective effect was attributed to the nanotubes acting as scavengers, binding up oxidative species and preventing them from interacting with DNA.
Researchers at Duke University created a system to study electron tunneling and unexpectedly found a quantum phase transition. The discovery could provide a simple model for testing environments where quantum phase transitions occur.
A research team at University at Buffalo has created synthetic pores inspired by nature, which selectively allow potassium ions and water to pass through while restricting other substances. The discovery paves the way for new technologies in water purification, tumor treatment, and disease regulation.
A new type of paint made with carbon nanotubes can help detect strain in buildings, bridges, and airplanes. This method provides a big advantage over conventional strain gauges, which must be physically connected to their read-out devices.
The study found that iron is the best and quickest catalyst to heal topological defects in nanotubes, which are critical for advanced materials. The researchers determined that healing occurs in a small zone near the catalyst and can happen in a fraction of a millisecond.
Researchers at DOE's Oak Ridge National Laboratory have developed a carbon nanotube sponge that can soak up oil in water with unprecedented efficiency. The material's unique structure and properties make it an attractive solution for oil spill cleanup, offering advantages over existing substances.
Researchers at Rice University and Penn State University discovered a material that can absorb oil spilled in water due to the addition of boron to carbon nanotubes. The nanosponges have a high surface area, conduct electricity, and can be manipulated with magnets.
A new nano-coating developed by Georgia Tech researchers doubles the rate of heat transfer in pool boiling, increasing efficiency and potential applications for electronics and energy systems. The coating enhances rewetting of the solid surface, allowing bubbles to carry away more heat.
Researchers found that longer carbon nanotubes emit more light at near-infrared wavelengths, while shorter tubes are dimmer due to imperfections. The study reveals insights into how growth methods and processing can improve nanotube fluorescence.
Air Force Research Laboratory experiment confirms Boris Yakobson's theory that chirality of nanotubes determines their growth speed and armchair nanotubes grow fastest. The study provides a basis for further research into growing specific types of nanotubes with desired properties.
Researchers at Rice University have figured out the source of colorful armchair nanotubes: hydrogen-like objects called excitons. The team found that exciton resonance occurs around a unique electronic structure in these one-dimensional materials, making them visible to our eyes.
Researchers create tube-shaped traps from bottle-brush molecules, capturing particles of specific sizes using negatively charged inner walls. The nanotubes can be used to separate large quantum dots from small ones or separate proteins by size and charge.
Researchers have developed novel motors that twist like elephant trunks, providing a thousand times higher rotation per length than previous artificial muscles. The motors use carbon nanotube yarns and can accelerate a paddle up to 590 revolutions per minute, making them suitable for applications such as microfluidic pumps and mixers.
The discovery of GNR@SWNTs opens up potential applications in electronics, optoelectronics, and energy storage. Researchers have found that the shape of encapsulated graphene nanoribbons can be modified by different polyaromatic hydrocarbon molecules, allowing for metallic or semiconductor properties.
Researchers at NIST describe using tailored DNA strands to purify armchair carbon nanotubes, essential for 'quantum wires'. This breakthrough enables mass production of these nanotubes, promising 10x better conductivity and lower loss.
Rice University scientists have developed a cable made of metallic nanotubes that can carry electricity with minimal loss. The 'amplified' nanotubes are created by chemically attaching an iron/cobalt catalyst to the ends of nanotubes and fine-tuning the temperature and environment for amplification.
Scientists have developed a technique to mass-produce high-quality boron nitride nanoribbons with uniform lengths and thickness, opening doors for various electronic and magnetic properties. The ribbons display unique edge orientations, such as zigzag or armchair shapes, which are crucial determinants of their properties.
NJIT researchers Reginald C. Farrow and Zafer Iqbal developed a method to fabricate arrays of nanoscale electrical probes, which may lead to improved diagnostic tools for measuring biological cell activity. The patented technique allows for precise control over the location of individual nanotubes in an array.
Researchers at the University of Pennsylvania have developed an algorithm to computationally select the best proteins for building nanostructures, drawing inspiration from biological structures. The method eliminates thousands of candidate proteins to identify suitable ones, making the protein selection process more efficient.
Researchers at Stanford University have developed an improved imaging method using fluorescent carbon nanotubes that allows them to see centimeters deep into a mouse with far more clarity than conventional dyes provide. This breakthrough enables the simultaneous drug delivery and imaging of internal organs in real-time.
A groundbreaking study by Prof. Adrian Bachtold's team has discovered nonlinear damping behavior in nanoscale mechanical devices, which facilitates amplification of signals and dramatic improvements in sensitivity. The findings have profound consequences for the physics of nanoelectromechanical resonators and will enable significant ad...
Catalysts made of carbon nanotubes dipped in a polymer solution have been shown to equal the energy output and outperform platinum catalysts in fuel cells. The new process is simpler and cheaper, reducing the cost of fuel cells by up to 75%.
A new carbon material, engineered to be the lightest solid, shows promise in detecting pollutants, improving robotic surgery techniques, and storing energy more efficiently. The material's large surface area allows for great amounts of energy storage, increasing the capacity of lithium batteries.
Rice University researchers settle a long-standing controversy in polymer dynamics by proving that flexibility enhances the mobility of stiff filaments. The study shows that nanotubes and other fine filaments can navigate through crowded environments and fixed networks with ease, paving the way for new sensing technologies.