Articles tagged with Nanotubes
Researchers created nanocavity-filled titanium oxide nanorods that are 25% more efficient at absorbing UVA and UVB radiation, making them ideal for sunscreen. The method involves simply heating titanate nanorods in air, transforming them into titanium oxide with regular polyhedral nanoholes.
Scientists at Vanderbilt University have overcome a major obstacle in producing fluorescent nanotubes, which can be used as contrast agents in cells and tissues. The breakthrough allows for the creation of trillions of nanotubes with high quantum efficiency, making them suitable for medical applications such as anti-cancer treatments.
Researchers used nanotechnology to study exciton mobility on carbon nanotubes, revealing that each excition travels about 90 nanometers and visits some 10,000 carbon atoms during its lifespan. The unique properties of carbon nanotubes made them an ideal system for observing single-molecule reactions.
Researchers create nanotubes to deliver therapeutic proteins or drugs in a highly-controlled manner, avoiding side effects and improving treatment outcomes. The method targets the drug where it is needed, reducing dosage and promoting better absorption.
Researchers at NIST found that short DNA-wrapped single-walled carbon nanotubes can selectively absorb into human lung cells, posing a potential health risk. The team's study suggests that the length of the nanotube plays a significant role in determining cellular uptake and toxicity.
Researchers have developed nanoelectrodes that can be used for electrochemical and biochemical sensing within living cells. The probes, which are 100 nanometers in diameter, can be controlled precisely where they penetrate a cell or pinpoint smaller structures like the nucleus or mitochondrion.
Researchers discovered that carbon nanotubes can repair themselves by moving blemishes across the surface of the material, sewing up larger holes as they go. This self-repair mechanism allows the nanotube to retain its strength despite severe damage, but comes with a price: releasing energy and mass in the form of gaseous carbon atoms.
Researchers at NIST have developed a new method to rapidly assess the quality of carbon nanotubes by spraying coatings onto a quartz crystal, measuring resonant frequency changes to detect mass variations and gauge consistency among samples. The new technique outperforms standard analytic methods in speed and sample analysis.
The Delft University of Technology has successfully created the world's smallest piano wire, measuring approximately 2 nanometers in diameter. The researchers used carbon nanotubes and developed a model to predict their vibrations, which can be used for mass sensors and other applications.
Rice University chemists have successfully created and grown carbon nanotube seeds, which can be used to produce large quantities of pure nanotubes. The breakthrough offers significant potential for various materials applications, including energy storage and electronics.
Researchers at MIT have identified a class of chemical molecules that preserve the metallic properties of carbon nanotubes, enabling them to be assembled and manipulated without losing conductivity. This breakthrough has potential applications in detectors, sensors, and optoelectronics.
Researchers develop nanotubes to enhance adult stem cells' ability to differentiate into neurons in stroke-damaged rat brains. Additionally, nanoparticles promote formation of blood vessels and boost cardiovascular function after heart attacks.
Researchers print carbon nanotubes on paper and plastic surfaces, creating conductive patterns that could be used in flexible electronics, sensors, and other applications. The approach is simple, versatile, and inexpensive, making it a potential alternative to current methods.
Researchers at Rice University have developed a new method to sort semiconducting nanotubes based on their dielectric constant, which is determined by their diameter. The system uses electric fields to trap and separate nanotubes of different sizes, allowing for the collection of samples with varying proportions of small and large tubes.
A new model mimics bidding behavior on eBay, showing that late bids are more likely to win than early incremental bids. Researchers also break quantum physics barrier by demonstrating interference among independent photons, vital for future quantum computers and secure communication schemes.
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.
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 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.
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.
Researchers discovered a new way to form complex networks of nanotubes on the surface of layered crystals. The tubes are prismatic folds with intricate branches and connections, forming in less than a second.
Researchers at Rensselaer Polytechnic Institute developed new nanocomposites that provide excellent damping capabilities, even at high temperatures. These materials show great potential for applications in aircraft, spacecraft, and sensors, particularly in reducing vibration and improving sound quality.
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.
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.
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.
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.
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.
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.
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.
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 at Purdue University have developed a method to align carbon nanotubes and filaments, similar to collagen fibers in real bones. This alignment improves cell adhesion and growth, potentially leading to better artificial joints that last longer and attach more securely to human bones.
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 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 have developed a method to transport indium particles along carbon nanotubes using electrical current, enabling high-throughput assembly of nanostructures. This breakthrough could revolutionize the field of nanotechnology by allowing for efficient and precise delivery of atoms.
Researchers have successfully built nanotube transistor devices that can function at very high speeds, potentially leading to faster cell phones and computers. The transistors operate at a frequency of 2.6 gigahertz, switching electrical current on and off in about one billionth of a second.
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 at Duke University have developed a new type of nanotube transistor that uses an electrically conducting polymer gate to reduce power demand and improve device performance. The innovation offers great promise for future electronic devices, including those even smaller than current models.
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 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 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.
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 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 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.
Researchers at Rice University have precisely identified the optical signatures of 33 'species' of light-emitting carbon nanotubes, revolutionizing the field of nanotechnology. This breakthrough enables chemists to measure nanotubes using simple and faster methods, accelerating research in this rapidly evolving field.
The Fenniri team has discovered a new class of nanotubes formed from synthetic organic molecules, enabling complete control over their formation and properties. These nanotubes can be customized to possess different physical and chemical properties, making them suitable for various industrial applications.
Carbon nanotubes have been shown to exhibit exceptional mechanical properties, enabling the creation of high-speed electronic devices. The breakthrough could lead to the development of hand-held DNA detectors, superfast optical detectors, and computer chip speeds faster than current Pentium processors.
Rensselaer Polytechnic Institute researchers have developed a method to grow carbon nanotubes up, out, and in all three dimensions, providing unprecedented control over their growth. This breakthrough could lead to the creation of Lilliputian devices and complex networks comprised of molecular units.
Researchers at Purdue University develop self-assembling nanotubes that can be easily manipulated to create custom-built molecular wires and components. The nanotubes, stable under high temperatures, may pave the way for designing new materials and electronic devices.
Paul McEuen's research group has developed a method to count individual electrons in carbon nanotubes using an atomic force microscope. This breakthrough enables scientists to study the basic physics of electron behavior and advance the field of nanoelectronics.
Researchers at Scripps Research Institute develop cyclic peptide nanotubes that disrupt bacterial cell walls, killing deadly pathogens. These 'nanotube' stacks have strong bactericidal activity and may minimize resistance development.
Researchers have created a nanotube single electron transistor that operates efficiently at room temperature. The device is smaller than 1/500th the distance across a human hair and only requires one electron to toggle between on and off states, making it an ideal candidate for molecular computers.