Scientists uncover how multi-walled carbon nanotubes are formed inside glass-coated liquid carbon via the pure carbon arc method. The research team discovered that carbon crystals form inside drops of glassy liquid carbon, which cool at a faster rate than the surrounding nanotube, resulting in a glassy appearance.
Scientists at NIST have developed prototype pyroelectric detectors coated with carbon nanotubes, showing improved heat conduction and laser resistance. The coating absorbs light and converts it to heat, generating a current that measures the power of the laser.
Nanotubes form along atomic steps due to iron nanoparticles' attraction to local fields created by the steps. The orientation and form of these steps can be controlled, enabling the production of different nanowire arrangements.
Researchers at Illinois have developed a new class of biological sensors using single-walled carbon nanotubes. These sensors can detect glucose concentrations in human tissue, providing potential applications for diabetes management and other medical conditions.
Researchers developed molecular sheaths around carbon nanotubes to respond to glucose, detecting it with near-infrared fluorescence. The technique allows for real-time monitoring of blood glucose levels with long-term monitoring applications.
Researchers found that nanotubes were ingested by white blood cells and retained their fluorescent properties, allowing for selective detection. The discovery builds on a previous finding of unique fluorescent signatures from individual types of nanotubes.
Researchers have developed a transistor that fuses carbon nanotubes with polymers to create a capnography sensor detecting subtle changes in CO2 concentrations. This technology may provide a new tool for emergency responders to monitor patients' respiratory patterns and verify breathing tube placement.
The new center will merge nanotubes with organic molecules to create sensors or nanomachines small enough to fit on a virus. Researchers will design and assemble building blocks to develop new devices and systems.
Researchers at University of Manchester create graphene, the first two-dimensional fullerene, exhibiting remarkable electronic properties. The nanofabric shows potential to replace gallium arsenide in niche markets due to low energy consumption and high electron mobility.
Researchers have successfully grown ultralong carbon nanotubes that exhibit superior electrical properties to copper, a world record for nano-materials of this length. The discovery paves the way for innovative applications in supercomputers and healthcare.
Carbon nanotubes' electronic and mechanical properties are highly dependent on the presence of defects, which alter their vibrational modes and affect electrical conductivity and heat transport. The study demonstrates the importance of understanding these effects for optimizing nanoscale devices.
Researchers create nanotubes with antimicrobial properties that can detect and kill biological agents. The nanostructures can change color in response to UV light and have been shown to be effective against E. coli bacteria.
Researchers at Los Alamos National Laboratory have successfully grown a single-wall carbon nanotube, reaching a world-record length. This breakthrough has the potential to enable new types of nanoscale electro-mechanical systems, including micro-electric motors and nanoconducting cables.
Researchers at the University of Pennsylvania have successfully spun carbon nanotubes into usable fibers using a technique developed by Rice's Richard E. Smalley. The resulting fibers exhibit good mechanical and electrical properties, but modest thermal conductivity.
The McGill researchers developed a new method to produce CNTs with the possibility of scale up to large industrial levels, based on thermal plasma technology. This technology has the potential to bring down production costs and increase availability in large quantities.
Researchers at NIST discovered that adding carbon nanotubes to polypropylene eliminates a common manufacturing headache called 'die-swell'. The addition of nanotubes allows the polymer to be processed at high speed through extruders, enabling the controlled manufacture of smaller components.
Scientists found that semiconducting nanotubes' band gap shrunk steadily under strong magnetic forces, confirming quantum mechanical theories and shedding new light on carbon nanotubes' unique electrical properties.
Researchers at University of Illinois at Urbana-Champaign used strong magnetic fields to alter the electronic structure of carbon nanotubes, converting them from metallic to semiconducting and back. This phenomenon was made possible due to the Aharonov-Bohm effect, which is a fundamental aspect of quantum mechanics.
Researchers develop new methods to assess carbon uptake in Western mountain forests, which are affected by drought. By combining airborne data with ground-based measurements, scientists can better understand natural processes involved in forest-air carbon exchange.
Researchers combine airborne data with ground-based measurements to better understand carbon exchanges in rolling hills and mountain ranges. The project aims to enhance carbon uptake and improve monitoring methods for high-emitting nations and industries.
Researchers at Purdue University have discovered self-assembling nanotubes that attach better to titanium-coated implants than uncoated ones, promoting new cell growth and potentially leading to longer-lasting artificial joints. The nanotubes offer promise in biomedical applications and could be tailored for specific parts of the body.
Researchers have made groundbreaking discoveries in carbon nanotubes, with the smallest diameter yet found. Additionally, negative refraction has been observed in liquid surface waves, while a new form of high-density water has been discovered at the interface between ice and silicon dioxide.
Chemists at PNNL have found that maintaining alkalinity and frequent wetting and drying cycles can increase soil's natural ability to soak up carbon dioxide. This approach could help slow global warming by utilizing the soil's potential reservoir of four times more carbon than the atmosphere.
Researchers developed a disposable sensor using carbon nanotubes and enzymes to detect OP nerve agents. The sensor can detect traces of up to 5 parts per billion, making it a promising tool for identifying toxin exposure.
Researchers have developed composite fibers containing varying percentages of carbon nanotubes, which can double stiffness, reduce shrinkage by 50%, and improve solvent resistance. Breaking up nanotube bundles could make these materials more accessible for commercial products.
Researchers at Brookhaven National Laboratory have successfully produced infrared light from carbon nanotubes by applying electrical voltages. The discovery paves the way for potential applications in lighting and flat-panel displays due to the exceptional mechanical strength of carbon nanotubes.
Researchers created a gel that effectively increases isolated single wall carbon nanotube concentrations without bundling. The resulting nematic nanotube gels exhibit beautiful defect patterns and mechanical strains, opening up potential for novel composites and applications.
Researchers at NIST quantify the problem and solution of carbon nanotube demixing, revealing flow conditions that can lead to demixing. The findings provide insight into how to process nanotubes more efficiently for various applications.
Researchers at the Weizmann Institute developed a novel nanotube composed of nanoparticles, offering tailored properties for various applications. The tubes' unique characteristics enable design of future sensors and catalysts.
Researchers found that graphitic black carbon resists conversion to other forms, such as combining with oxygen to form carbon dioxide. This resistance affects carbon cycle calculations, leading to significant overestimates of burial of combustion-derived black carbon in marine sediments.
Researchers found that nanotubes with tiny bumps cause less scar tissue and stimulate neurons to grow more fingerlike extensions, needed for brain activity regeneration. The findings suggest using a mixture of plastics and nanotubes could decrease scar tissue formation around electrodes.
Scientists at UC Berkeley and Stanford developed a working, integrated silicon circuit that incorporates carbon nanotubes. The breakthrough allows for the creation of high-performance memory chips capable of storing orders of magnitude more data than current silicon chips.
Researchers have demonstrated that carbon nanotube transistors can enhance electrical signals, potentially improving performance of consumer electronic devices. The discovery is based on the principle of stochastic resonance, which claims that noise can improve signal detection.
Researchers at USC have built a signal detector that only works when noise is added, using stochastic resonance to amplify weak electronic signals. The device uses carbon nanotubes and demonstrates the potential for enhanced applications in electronics and communication systems.
Researchers at Rice University have successfully created continuous fibers of pristine single-walled carbon nanotubes using a new processing method involving superacids. This breakthrough enables the industrial production of pure carbon nanotube threads, cables, and sheets, with potential applications in materials science and aerospace.
Researchers developed a technique using single-stranded DNA to separate and sort metallic and semiconducting carbon nanotubes, enabling uniform conductivity and advancing nanoelectronic applications. The discovery in the journal Science has significant implications for developing sensitive medical diagnostic devices and mini-transistors.
Researchers at the University of Pennsylvania have created a method to mix single-walled carbon nanotubes into polymers for enhanced strength, conductivity, and thermal stability. The technique uses coagulation to disperse nanotubes evenly, achieving significant improvements in material properties.
Researchers have successfully created self-assembling nano transistors using DNA, paving the way for large-scale manufacturing of nanoscale electronics. The transistors can be switched on and off by applying voltage to them, making them a promising application in computing technology.
Researchers found that carbon nanotubes exhibit lower thermal conductivity when integrated into other materials due to interfacial resistance. Despite this, they remain optimistic about using nanotubes to improve insulating materials.
Researchers found that ozone reduces soil carbon formation, a key process for storing organic matter. The study suggests forests may be less effective at cleaning the air of excess carbon dioxide when ozone levels are high.
Researchers found that elevated ozone levels can reduce soil carbon formation, which is essential for forest health and climate regulation. The study's findings suggest that high ozone levels may hinder forests' ability to absorb excess carbon dioxide, threatening global efforts to mitigate greenhouse gas emissions.
The new material has up to five times the fracture toughness of conventional alumina, making it more forgiving under dynamic loads. It also exhibits high electrical conductivity ten trillion times greater than pure alumina, with interesting thermal properties that make it suitable for thermal barrier coatings.
Researchers at Illinois and Rice University developed a new process to chemically select and separate carbon nanotubes based on their electronic properties. The process uses reaction chemistry to create handles that can selectively manipulate metallic and semiconducting nanotubes.
Researchers at Rice University have developed a technique to sort single-walled carbon nanotubes based on their electronic properties. This allows for the separation of metallic and non-metallic nanotubes, which could lead to significant advances in molecular electronics and device development.
Researchers have successfully created carbon nanotubes with ideal photon emission, a narrow and steady emission that can be used for quantum cryptography and single-molecule sensors. This breakthrough enables the development of practical applications in fields such as quantum optics and biology.
Researchers at Penn State have developed a new type of sensor that can detect hydrogen levels with incredible sensitivity. The titania nanotube sensors are 200 times more sensitive than previously used materials and offer several advantages, including high response rates and minimal interference from other gases.
Researchers at Rice University have developed a new chemical process, pyrolytic fluorination, that yields short carbon nanotubes with predictable lengths. The technique involves attaching fluorine atoms to the nanotubes and then heating them to cut the tubes into segments ranging from 20-300 nanometers.
Researchers at Rice University developed fluoronanotubes with unique chemical properties, allowing for easier manipulation and dispersal in various materials. This breakthrough enables the creation of new materials and applications, including advanced composites, sensor technology, and molecular electronics.
A new technique allows for the growth of silicon nanowires and carbon nanotubes directly onto a microchip, eliminating cumbersome middle steps in sensor manufacturing. This method enables the production of ultra-sensitive biochemical sensors and early-stage disease detectors that can detect single viruses or toxic agents.
Scientists have successfully imaged a double-wall carbon nanotube at atomic resolution using an electron nanodiffraction technique. This breakthrough enables the determination of the structure of non-periodic objects, including biological macromolecules, much like X-ray diffraction does for crystals.
Emory University researchers have successfully self-assembled Alzheimer's amyloid fibrils into well-defined nanotubes. These nanotubes exhibit unique properties and can be used to build nanotechnological devices, offering new avenues for research and potential applications in fields such as medicine and materials science.
The researchers successfully grew extremely long and straight single-walled carbon nanotubes by heating samples quickly, achieving lengths of over 2 millimeters. This breakthrough could enable the creation of billionths-of-a-meter scale electronic circuitry and opens up new possibilities for nanoelectrical components.
Researchers have developed gallium nitride nanotubes that exhibit optical properties similar to carbon nanotubes but with a transparent structure. These tubes hold promise as chemical sensors due to their ability to attach organic molecules, making them useful for microfluidic applications.
Engineers are using chemical force microscopy to produce detailed information about adhesion between single-walled carbon nanotubes and molecules of candidate polymers. The researchers aim to find the strongest interaction, which will give them the best composite material for lightweight applications.
Research shows that fire frequency impacts the ability of forests to store carbon, with younger stands storing less carbon than older ones. Forests dominated by rapidly growing aspen trees tend to store more carbon than those with slower-growing black spruce and jack pine trees.
Researchers at UCLA have created a new method for producing carbon nanoscrolls, which can be made at room temperature and offer significant advantages over traditional carbon nanotubes. This breakthrough could lead to improved hydrogen storage, enabling the development of pollution-free, hydrogen-powered cars.
Researchers explore new power plants that capture carbon dioxide before it leaves the facility, as well as synthetic trees that pluck carbon from the air. Despite promising results, challenges remain, including proper water disposal and reducing greenhouse gas emissions.
The collaboration between Rice University and IBM aims to improve the understanding of carbon nanotubes' mechanical, structural, and electronic properties. By utilizing the powerful CBEN supercomputer, researchers can tackle complex quantum mysteries and develop new algorithms for theoretical molecular science.
Researchers at the University of Pennsylvania found that a readily available chemical called sodium dodecylbenzene sulfonate (NaDDBS) can disperse nanotubes in water with remarkable efficiency. This discovery represents an important step towards wider applications of nanotubes.
Climate change affects ocean's sequestration capacity, with the Atlantic Ocean proving more effective at storing carbon dioxide. The impact is most pronounced in the Atlantic, where rising sea surface temperatures slow down thermohaline circulation and reduce mixing, exacerbating the problem.