Electrospinning/Electrospray
Electrospinning, sol-gel chemistry are combined to form nanotubular fibers
작성자
nanonc
작성일
2015-10-05 09:57
조회
4907
| April 26, 2004 Volume 82, Number 17 p. 6 |
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MATERIALS SCIENCE |
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| HOLLOW NANOFIBERS IN A SINGLE STEP Electrospinning, sol-gel chemistry are combined to form nanotubular fibers |
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| MITCH JACOBY | ||
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| Follow fibers with nanometer-scale diameters can be prepared in a single step using a newly developed method. The simple and flexible technique can be used to make nanotubes from a variety of materials, leading to a host of potential applications in microfluidics, sensing, field-emission devices, and other areas. Nowadays, chemistry and materials journals are filled with reports describing new methods for synthesizing all sorts of nanotubes. Most of the preparation techniques, especially for products other than carbon nanotubes, make use of self-assembly and template-based procedures. Although a large variety of materials encompassing a range of properties have been used, the synthesis techniques tend to be complex and involve careful design, preparation, and the ultimate removal of the nanosized templates around which the tubes are grown. Now, researchers in Spain and the U.S. have developed a technique that yields hollow fibers with nanometer-sized interior diameters in just a single step [J. Am. Chem. Soc., 126, 5376 (2004)]. The method exploits electrohydrodynamic forces that form coaxial jets of liquids with microscopic dimensions. By the injection of two immiscible |
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