has more strong light intensity than single chip WLED, but process is too complicate and not cost effective. And electron transfer is slow caused by 2-dimensional chip.
2. RGB-LED Nano Wire ??
Existed RGB-LED structure is 3-chip structure(emit red, green, blue) and mixture structure that constructed with One single chip(emit blue light) and different size quantum dots(emit light by
1. Introduction
흔히들 21세기를 ‘빛의 시대’라 말한다. 과거 실리콘 반도체가 전자 정보의 혁명을 가능케 했다면 이제 제 3세대 반도체인 질화물 반도체가 21세기 빛의 혁명을 예고하고 있다. 발광다이오드(light emitting diode: LED), 즉 "빛을 내는 반도체"가 바로 그것이다. LED는 p형과 n형 반도체의 접합으로
for the maintenance of these unbroken columns of water. When water is confined in tubes of very small bore, the forces of cohesion (the attraction between water molecules) are so great that the strength of a column of water compares with the strength of a steel wire of the same diameter. This cohesive strength permits columns of water to be pulled to great heights without being broken.
in mountains. The vertical gun barrels would be 3 feet in diameter and more than a mile long. The sunshield lenses would be loaded into the projectiles, which would then be fired using blasts of clean energy, generated by hydroelectric dams.The coil gun works by rapidly charging and discharging a series of wire coils running up the length of each barrel. This action attracts then repels the pr