The National Aeronautics and Space Administration (NASA) proposes to construct a "Space Elevator" which will connect a "Cosmic Station," 92,200km above the ground, to the surface of the earth. It plans to start operating the service on 12 April, 2018. The Space Elevator has been made possible by the appearance of an advanced material called Carbon Nanotube (CNT). Lately, CNT has been in the limelight because its many properties far out-shine all existing materials. It is centuple (a hundred times) stronger than steel and can glow a hundred times brighter than a luminescent diode (LED). The heat conductivity of CNT is equal to that of diamond which is the highest conductivity-rate found in nature. Because of these advantages, CNT has infinite application-possibilities in the fields of household goods, hydrogen fuel cells and Information Technology (IT). Many countries throughout the world are now looking at ways to make more efficient use of CNT.
There are, however, still problems to be solved before CNT can be made readily and affordably available on the market. Many universities and laboratories including Rice, Harvard, and Stanford Universities in the USA; the University of Tokyo in Japan; Delft University of Technology in the Netherlands; and the University of Oxford in England, are devoting all their strengths to overcoming this difficult problem. Since 2002, the Korea Institute of Science and Technology (KIST) and Iljin Nanotech have been studying CNT as a source of illumination. Recently, Nanopacific Inc. has succeeded in manufacturing a prototype source of illumination from a 4.5 by 5.7 inch figured-plane of CNT.
저작권자 © 영남대학교 언론출판문화원 무단전재 및 재배포 금지