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Graphene based actuators are of practical interest because of their relatively low cost compared with other nano-carbon materials, such as carbon nanotubes. We demonstrate the simple fabrication of graphene oxide (GO)-based fibers with infiltrated Nylon-6,6 polymer by wet-spinning. These fibers could be twisted to form torsional actuators and further coiled to form tensile actuators. By control the relative twisting and coiling direction of the GO/Nylon fiber, we were able to realise reversible contraction or elongation actuation with strokes as high as -80% and 75%, respectively, when the samples were heated to 200oC. The tensile actuation showed remarkably little hysteresis. Moreover, this GO/Nylon actuator could lift loads over 100 times heavier than itself, and generate stable actuation at high temperatures over the melting point of the polymer. This novel kind of GO-based actuator, which has multi-directional actuation, have potential for a wide range of applications such as artificial muscles, robotics, and temperature sensing.
This article was published in the following journal.
Name: ACS applied materials & interfaces
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A TEXTILE fiber obtained from the pappus (outside the SEEDS) of cotton plant (GOSSYPIUM). Inhalation of cotton fiber dust over a prolonged period can result in BYSSINOSIS.
Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several forms including: 1, laser fiber delivering the energy while the inflated balloon centers the fiber and occludes the blood flow; 2, balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that contain an internal fiber.
Antineoplastic agents that are used to treat hormone-sensitive tumors. Hormone-sensitive tumors may be hormone-dependent, hormone-responsive, or both. A hormone-dependent tumor regresses on removal of the hormonal stimulus, by surgery or pharmacological block. Hormone-responsive tumors may regress when pharmacologic amounts of hormones are administered regardless of whether previous signs of hormone sensitivity were observed. The major hormone-responsive cancers include carcinomas of the breast, prostate, and endometrium; lymphomas; and certain leukemias. (From AMA Drug Evaluations Annual 1994, p2079)
Gram-negative aerobic rods, isolated from surface water, mud, or thermally polluted lakes or streams. It is pathogenic for man and it has no known soil or animal sources.
Gram-negative aerobic rods found in warm water (40-79 degrees C) such as hot springs, hot water tanks, and thermally polluted rivers.