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Researchers at Rice University, Stony Brook University, Radboud University Nijmegen Medical Centre and University of California, Riverside have shown that carbon nanotubes and their polymer nanocomposites are suitable scaffold materials for bone tissue engineering [12] [13] [14] and bone formation.
CNTs enable fluorescent and photoacoustic imaging, as well as localized heating using near-infrared radiation. Low detection limits and high selectivity require engineering the CNT surface and field effects, capacitance, Raman spectral shifts and photoluminescence for sensor design.
Products under development include printed test strips for estrogen and progesterone detection, microarrays for DNA and protein detection and sensors for NO 2 and cardiac troponin. Similar CNT sensors support food industry, military and environmental applications. Cargo release can be triggered by near-infrared radiation.
However, limiting the retention of CNTs within the body is critical to prevent undesirable accumulation. The degree of lung inflammation caused by injection of well-dispersed SWNTs was insignificant compared with asbestos and with particulate matter in air. Medical acceptance of CNTs requires understanding of immune response and appropriate exposure standards for inhalation, injection, ingestion and skin contact.
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CNT forests immobilized in a polymer did not show elevated inflammatory response in rats relative to controls. CNTs are under Fire Retardant Research Paper as low-impedance neural interface electrodes and for coating of catheters to reduce thrombosis. Relying on the unique properties of the CNTs, researchers have developed field emission cathodes that allow precise x-ray control and close placement of multiple sources. CNT enabled x-ray sources have been demonstrated for pre-clinical, small animal imaging applications, and are currently in clinical trials.
Here, the high surface-area-to-volume ratio and high hydrophobicity of CNTs are used in order to greatly decrease the analysis time of small neutral molecules that typically require large bulky equipment for analysis. Pioneering work led by Ray H. Baughman at the NanoTech Institute has shown that single and multi-walled nanotubes can produce materials with toughness unmatched in the man-made and natural worlds.
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Initial attempts to incorporate CNTs into hierarchical structures such as yarns, fibres or films [25] has led to mechanical properties that were significantly lower than these potential limits. Because of the high mechanical strength of carbon nanotubes, research is being made into weaving them into clothes to create stab-proof and bulletproof clothing. The nanotubes would effectively stop the bullet from penetrating Fire Retardant Research Paper body, although the bullet's kinetic energy would likely cause broken bones and internal bleeding. This is about the same amount of energy that nine households would see more in one year.
This saves manufacturing time and results in higher strength structures.]
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