Scientists have discovered that thawed loess permafrost in Siberia and Alaska contains a large amount of carbon, with approximately 500 Gt of carbon stored. This finding is significant as it suggests that the thawing of this type of permafrost could release substantial amounts of carbon into the atmosphere over the next century.
Scientists at Georgia Institute of Technology developed a new nanofabrication technique by growing carbon nanotubes on micro-cantilevers, enabling precise measurement and control over the growth process. This platform allows for rapid testing of various chemistry or growth conditions, accelerating materials discovery.
Carbon nanotubes have withstood pressures up to 40 gigapascals, making them ideal for nanoscale hydraulics and cylinders. The researchers discovered that nanotubes can perform similar functions at the scale of atoms and molecules, including extrusion processes.
Researchers have created a membrane made of carbon nanotubes and silicon that can rapidly flow liquids and gases, making it a promising candidate for desalinization. The membrane's tiny pore size can block larger molecules, reducing energy costs by up to 75% compared to conventional membranes.
University of Florida scientists develop tiny test tubes that can be easily opened and closed to deliver targeted chemotherapy drugs to cancer cells. By using biodegradable materials and amino-modified nanotubes, the researchers aim to improve the effectiveness of cancer treatment while minimizing side effects.
Researchers at Rensselaer Polytechnic Institute have developed a process to overcome difficulties in combining nanotubes with other materials, leading to improved composites. The new material demonstrates remarkable improvements in strength, toughness, thermal conductivity, and electrical conductivity.
Scientists at UTMB and Rice University successfully transmit electrical pulses through carbon nanotubes to stimulate cell growth and communication. The breakthrough could lead to the development of prosthetic devices that can interact with living tissue.
Researchers at Purdue University have developed thermal interface materials with carbon nanotubes that conduct heat more efficiently than conventional materials. The nanotube-based interfaces can reduce the temperature rise of computer chips by up to 5 degrees Celsius, improving overall performance and reducing the risk of damage.
Researchers have developed graphene circuitry comparable to carbon nanotubes, allowing for high-volume production. The material exhibits high electron mobility and coherence, enabling the transport of electrons through waveguides. Challenges ahead include improving patterning techniques and understanding fundamental properties.
A six-year study found that higher carbon dioxide levels and limited nitrogen in soils hinder plant growth, potentially leading to reduced ecosystem carbon storage. The research suggests that as atmospheric carbon dioxide increases, soils will struggle to support plant life, exacerbating the issue.
Researchers at Brookhaven National Laboratory have developed a method to synthesize high-quality cerium oxide nanotubes, which release oxygen ions when immersed in low-oxygen environments. This process is critical for the nanotubes' effectiveness as catalysts.
Scientists have developed a method to track and quantify the absorption of multi-walled carbon nanotubes into living cells. Research found that 74% of nanotubes were assimilated by cancer cells after 15 minutes, with nearly irreversible uptake.
Researchers developed a predictive tool to analyze nanotube breaks based on four key variables, including load level, temperature, and chirality. The model creates a strength map plotting the likelihood of breakage and its underlying mechanisms.
UCR researchers successfully grew bone cells on a scaffold of carbon nanotubes, which can be used to treat bone defects and improve dental implants. The non-treated and electrically-neutral nanotubes emerged as the best scaffolds for bone growth.
A team of researchers at Rensselaer Polytechnic Institute has developed a new process to create flexible, conducting 'nano skins' that can be used in various applications, including electronic paper and sensors. The materials combine the strength and conductivity of carbon nanotubes with the flexibility of traditional polymers.
Researchers at the University of Illinois have developed a method to detect trace amounts of contaminants using single-walled carbon nanotubes coated with DNA. The technique allows for passive sensing of hybridization, enabling the detection of specific DNA sequences in living cells.
Researchers at Penn State have developed titania nanotube dye sensitive solar cells with a 3% initial conversion rate, which they aim to increase to 15% through optimization. The cells use an easier fabrication system than conventional silicon solar cells and have shown promise in producing more electrons that do not recombine.
Scientists at NIST have created polymer nanotubes that are unusually long and stable, with potential applications in biotechnology. The team developed processes to extend the shelf life of these nanotubes, enabling their use as channels for tiny volumes of chemicals or as ultra-small hypodermic needles.
Researchers at the University of Pittsburgh have developed a method using carbon nanotubes to detect single DNA base mutations. The technique produces sensor results comparable to state-of-the-art optical techniques and has several advantages over existing methods, including cost, time, and simplicity.
Researchers from Livermore have determined the phase boundaries for carbon at pressures up to 20 million atmospheres and temperatures over 10,000 degrees Kelvin. The study provides results on the physical properties of carbon, essential for devising models of Neptune, Uranus, and white dwarf stars.
Researchers have developed a new theory that reconciles heat dissipation and electronic transport in metallic carbon nanotubes. The findings explain why shorter nanotubes can carry more current before burning apart due to efficient heat removal.
Researchers have discovered a way to strengthen carbon nanotubes by heating them to extreme temperatures, resulting in a nearly 280% increase in strength and a significant reduction in diameter. This breakthrough has implications for the development of high-temperature-resistant ceramics and electronics.
Scientists at Boston College have successfully stretched single-walled carbon nanotubes to remarkable lengths using high temperatures and electrical currents. The research indicates that these superplastic nanotubes may be useful in developing new generations of computer chips and strengthening ceramics and other nanocomposites.
Researchers at Rice University developed a new magnetic method to overcome the 'dark exciton effect' in semiconducting nanotubes, which could enable more efficient optical signals and reduced power demands in next-generation microchips.
Researchers at NIST and UPenn found that jammed networks formed by carbon nanotubes or nanofibers can create a continuous, heat-shield layer on top of polymer matrices, suppressing vigorous bubbling and improving flammability resistance. Optimal gel concentrations for single- and multi-walled carbon nanotubes were 0.5% and 1%, respecti...
Researchers at the University of Florida and two other universities have created a new type of foam-like film made from carbon nanotubes, which can be compressed to 15% of its original size. The films show promise for use in solid lubricating coatings for air and space applications.
Carbon nanotubes have been found to act like super-compressible springs, flexing and rebounding under compression. The new nanotube foams maintain their resilience even after thousands of compression cycles, offering a unique combination of strength and flexibility.
Jefferson and Delaware researchers create a novel method to detect breast cancer using tiny nanotubes and antibodies, which increase electrical current when cancer cells bind. The technique shows promise for detecting cancerous cells in seconds, potentially replacing days-old histology sectioning methods.
A recent study has discovered substantial room for increasing the efficiency of nanotubes, which are crucial for producing light with novel properties. The research found varying quantum efficiencies among individual nanotubes, with some being up to 1,000% more efficient than others.
Researchers at the University of Kentucky developed carbon nanotube membranes that allow for fast transit approaching the speed of biological channels. The membranes' scalable fabrication enables industrially useful chemical separations.
Researchers at Rice University have developed a method to reduce the toxicity of water-soluble carbon nanotubes through surface modifications. The study found that even minor changes can dramatically decrease cytotoxicity, making these nanoparticles more suitable for medical diagnostics and imaging.
University of Delaware researchers have developed a new therapeutic agent called 'nanobombs' that use carbon nanotubes to selectively kill cancer cells. The nanobombs are created by bundling carbon nanotubes and can be triggered by light, causing microscopic explosions that target specific areas within the body.
Researchers found that no-till farming can store up to 868 million tons of carbon in soil, which could help meet the US's goal of reducing carbon-dioxide emissions by one-fifth. Climate change affects soil carbon sequestration varying by region, with some areas experiencing increased storage and others reduced.
Researchers at Purdue University have shown how to use multi-walled carbon nanotubes as measuring tips in atomic force microscopes. The tubes' shape allows them to penetrate nano-structures, but they often stick due to van der Waals' forces. To overcome this, the team found that adjusting operating parameters can prevent artifacts and ...
Researchers created DNA-based sensors using single-stranded DNA and carbon nanotubes to detect tiny amounts of specific molecules. The sensors can identify weak known odors in a strong background due to their self-regenerating surface and specificity.
The novel material combines diamond's hardness with nanotubes' strength, offering potential applications in wear-resistant coatings, fuel cells, and electronic devices. The researchers developed a process to synthesize the material at the nanoscale, paving the way for fundamental advances in nanostructured carbon materials.
A UTD-led research team has produced strong, transparent carbon nanotube sheets with exceptional mechanical and electronic properties. These sheets have numerous applications, including organic light-emitting displays, low-noise electronic sensors, and artificial muscles.
Researchers at UCSD's Jacobs School of Engineering have successfully fabricated a transistor-like structure using customized Y-shaped carbon nanotubes, exhibiting rapid switching speeds and three-way gating capability. This breakthrough could lead to the development of new nanotechnology devices with improved functionality.
Researchers create gadonanotubes by encasing gadolinium in carbon nanotubes, significantly reducing toxicity while boosting effectiveness. The new agents show promising results in tests at Rice, Houston, and Swiss laboratories.
Researchers at the University of California, Santa Barbara have developed 'smart' bio-nanotubes that can encapsulate and release drugs in specific locations. The nanotubes were created using lipid bilayer membranes and microtubules from cell cytoskeletons.
Researchers at Stanford University have developed a nanotech-laser treatment that uses carbon nanotubes to selectively kill cancer cells, bypassing normal body tissue. The technique involves coating the nanotubes with folate molecules to target diseased cells, and shining near-infrared light on them to induce heat and destruction.
Physicists at the University of Pennsylvania have created a functional electronic circuit using nanotubes, overcoming a major hurdle in the race to create nanotube-based electronics. The researchers used liquid suspensions of carbon nanotubes to create circuits by dipping semiconductor chips into the solution.
Researchers at NIST and university partners find that carbon nanotubes can be sorted by length during mixing, which could lead to more affordable high-quality polymer nanocomposites. The study reveals that shorter tubes tend to congregate near the walls of mixing equipment.
Researchers at Temple University have discovered that oxygen groups on single-walled carbon nanotubes enhance their interaction with ammonia, which could lead to the development of small sensors for Homeland Security. The study found that heating and cooling the nanotubes affected their ability to bind with ammonia molecules.
Researchers have developed a new technique using carbon nanotubes to mimic the role of collagen in bone tissue, leading to improved mechanical strength and flexibility for artificial bone grafts. This breakthrough could lead to a new type of bone graft for fractures and potentially even treat osteoporosis.
Scientists at the University of Illinois have developed a method to create flexible silicon nanotubes using nanoparticles. These nanotubes exhibit a unique combination of properties, including elasticity similar to rubber, making them suitable for various applications such as catalysis and guided laser cavities.
Scientists at the University of California - Irvine have developed a method to send data at speeds of up to 10 gigahertz using nanotubes, breaking conventional copper wire limitations. This technology has the potential to revolutionize high-speed electronic devices and wireless systems.
Researchers found that nanotubes are stiff from the ends but soft from the middle, with larger tubes becoming softer. The study's findings are important for developing nanoelectronics and could lead to more efficient nanowires.
The Oak Ridge Associated Universities funds research to develop conductive ceramic materials. Lu, a Virginia Tech graduate student, aims to create advanced ceramic materials by incorporating carbon nanotubes. She has achieved 40% density, significantly improving the material's strength and conductivity.
Researchers have developed a new X-ray device that can create images of objects from numerous angles without mechanical motion, increasing imaging speed and reducing size. This technology has the potential to lead to smaller, faster, and more accurate X-ray scanners for airport baggage screening and medical imaging.
Researchers at the University of Southern California found that sapphire surfaces can self-arrange carbon nanotubes into useful patterns. This phenomenon occurs only on specific surfaces, particularly vertical slices with certain crystalline orientations.
Researchers develop new method to grow self-assembled and self-welded carbon nanotube devices, potentially leading to smaller but more powerful computers and electronic communication devices. The discovery could improve companies' competitive edge and help the $850 billion electronics industry advance.
Scientists at UCSD successfully shape carbon nanotubes into sharp bends, enabling new applications in atomic force microscopy and fuel cells. The breakthrough could lead to more efficient and compact electronic devices.
Researchers at NJIT have created a method to modify carbon nanotubes quickly and inexpensively using microwaves. This breakthrough enables the production of functionalized nanotubes with tailored properties, opening up new possibilities for various applications.
Researchers at PNNL have developed a new technique to control the deposition of anchor molecules on carbon nanotubes using supercritical fluids, enabling precise control over the level of coating and thickness. This innovation improves the material's utility without compromising its physical properties.
Researchers at Duke University have developed a new class of carbon nanotubes with improved performance and lower production costs. These few-walled nanotubes exhibit electronic properties comparable to those of single-walled nanotubes but are easier to manufacture and less expensive.
Researchers at UC Davis have developed a new method to create supercapacitors using aligned and packed carbon nanotubes on nickel foil. This innovation enables the creation of devices with high power density, up to 30 kilowatts per kilogram (kW/kg), significantly outperforming current commercial devices.
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.