1. Nanorods
of the reported procedures for rod formation, seedmediated growth has been by far the most efficient and popular approach. The role played by the seed particle is also critical. Furthermore, the presence of small amounts or silver nitrate during the synthesis has a dramatic effect on the final shape and crystalline structure if the particles. Citrate-capped gold nanoparticle, prepare
gold nanostructures have been observer or synthesized using various chemical approaches. In this paper, we report the successful aspect ratio control of goldnanorods by the seed-mediated method, along with an improvement in the yield. Two major parameters were controlled to optimize the growth properties of the goldnanorods, namely their kinetics and anisotropic growth. In the case of the first
nanorods with 6-fold structural symmetry. Fig. 1(f) shows the side-wall image of hierarchical ZnO nanostructure with widths of 70–-120 nm and average length of around 600 nm. The high-magnification image of the single nanorod on the side-wall displays columniform structure with a conic tip which is quite different from the hexagonal structure in Fig. 1(d), indicating that the ZnO nanorods a
The ZnO and ZnMgO nanostructures were grown on silicon substrates at different temperatures, using gold metal as a catalyst in the presence of argon as a carrier gas in a conventional tube furnace.
The effects of the substrate temperatures, gold catalyst, and source material preparation on the morphological and optical properties of the nanostructures were investigated.
Si substrates were c
1. Introduction
1.1 광역학 반응
Photodynamic reaction(PDT)는 빛, 광민감제, 산소 이 세 가지 요소를 포함한다. 먼저 광민감제 또는 그것의 대사적 전구체를 환자들에게 투여한다. 특정 파장의 빛을 조사하면 광민감제는 낮은 에너지 상태인 ground state에서 높은 에너지 상태인 excited singlet state로 전환된다. 그 다