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Mice are frequently used as lab models when testing new drugs, and fluorescent dyes are sometimes injected into their bodies so that researchers can better see how those drugs are progressing through their systems. Unfortunately, the pictures obtained in this process start to become murky when imaging anything more than a few millimeters beneath the skin. Scientists from Stanford University have now devised a system that utilizes fluorescent carbon nanotubes to produce clear color images of organs that are located centimeters within a mouse's body. Read More
Last year, researchers from the Massachusetts Institute of Technology (MIT) announced that they had successfully used carbon nanotubes for "funneling" and concentrating electrons in photovoltaic cells – this meant that smaller solar cells created using the nanotubes could produce as much or more electricity than larger conventional cells. Now, the efficiency of these nanotube solar cells is being boosted further ... with the help of a virus. Read More
When it comes to desalinating salt water, two of the main options are thermal distillation and reverse osmosis. Thermal distillation involves boiling the water and collecting the resulting freshwater condensation, while reverse osmosis involves pressurizing the salt water and forcing it through a semipermeable membrane, which will allow water molecules to pass through, but not salt. Both of these methods, however, require a considerable amount of energy – not as environmentally sound as they could be, nor entirely practical for use in developing nations, where electricity isn’t readily available. Now, however, a newly-developed membrane that incorporates carbon nanotubes could make desalination much quicker, easier and energy-efficient. Read More
With its two chief properties of excellent electrical conductivity and optical transparency, indium tin oxide (ITO) can be found in transparent conductive coatings for displays found in all kinds of products, such as TVs, mobile phones and laptops, and is also used as a transparent electrode in thin-film solar cells. Unfortunately indium is a rare metal and available supplies could run out in as little as ten years. This has prompted researchers to search for alternatives with some success already reported using carbon nanotubes and copper nanowires. The latest ITO replacement material also uses carbon nanotubes, as well as other commonly available materials, and is environmentally friendly. Read More
A cross-discipline project that brings together biomedicine and nano-engineering has led to the development of a dime-sized microfluidic device that can rapidly detect cancer cells in a blood sample. The new device is based on a cancer cell-detector created four years ago by Mehmet Toner, professor of biomedical engineering at Harvard Medical School. In its latest incarnation, carbon nanotubes have been introduced into the design resulting in an eight-fold improvement in the collection of cells. Read More
If someone does a lot of arm curls at the gym, the typical result is that the bones and muscles in their arms will get stronger. Recently, researchers at Houston’s Rice University inadvertently created a nanocomposite that behaves in the same way. Although the material doesn’t respond to static stress, repeated mechanical stress will cause it to become stiffer. Read More
Researchers from the Electrical and Computer Engineering Department of the University of Illinois have developed a new low-power digital memory which uses much less power and is faster than other solutions currently available. The breakthrough could give future consumer devices like smartphones and laptops a much longer battery life, but might also benefit equipment used in telecommunications, science or by the military. Read More
Over the past decade, touchscreens have risen to dominate mobile phone and other mobile consumer electronic device interfaces – and their popularity shows no sign of waning. Capacitive touchscreens, the type most commonly used in consumer electronics, usually use a conductor made of indium tin oxide (ITO). This material is well suited to this purpose due to its excellent conductivity and its transparency in thin layers. Unfortunately there are few deposits of indium in the world, which has prompted a search for alternatives. One such new alternative are touchscreens containing carbon nanotubes, which researchers claim offer comparable performance to ITO, but are much cheaper. Read More
Researchers have created a new aerogel that boasts amazing strength and an incredibly large surface area. Nicknamed ‘frozen smoke’ due to its translucent appearance, aerogels are manufactured materials derived from a gel in which the liquid component of the gel has been replaced with a gas, resulting in a material renowned as the world’s lightest solid material. The new so-called “multiwalled carbon nanotube (MCNT) aerogel” could be used in sensors to detect pollutants and toxic substances, chemical reactors, and electronics components. Read More
Single-walled carbon nanotubes are an essential component of many innovations in the field of nanotechnology, with particular potential in the fields of electronics, optics, and automotive technology. Until recently, however, one of the processes for synthesizing them had not fully been understood. More precisely, no one was sure exactly what caused the nanotubes to break, or how to better control the process for the creation of higher-quality tubes. Now, researchers from Rhode Island's Brown University and the Korea Institute of Science and Technology (KIST) think they have it figured out – it all comes down to tiny sonic booms pressing in on the tubes from either end. Read More