Si nanowires synthesized with cu catalyst
Si nanowires synthesized with cu catalyst
... Si nanowires synthesized with Cu catalyst Y. Yao ⁎ , S. Fan Tsinghua-Foxconn Nanotechnology Research Center, Department of Physics, Tsinghua University, Beijing 100084, ... alloy to form the Si nanowires when the concentration is supersaturated. The diameter of the Si nanowires is similar to the size of the CuSi alloy nanoparticles. So the tip of the Si nanowires is .....
Ngày tải lên: 16/03/2014, 15:12
Si nanowires synthesized by laser ablation of mixed sic and sio2 powders
... synthesized Si nanowires from SiC pow- ders mixed with SiO powders which are used to 2 synthesize single crystalline silicon in the present semiconductor industry. The crystalline Si nanowires are ... x 1 or Si powder with SiO powder 13 . However, a 2 target made of SiC powder mixed with SiO powder 2 Ž. is interesting since electronic-grade silicon EGS is made from the react...
Ngày tải lên: 16/03/2014, 15:08
Silicon carbide nanowires synthesized with phenolic resin and silicon powders
... factors for the formation of b -SiC nanowires. This paper proposed a method to synthesize SiC nanowires with phenolic resin and silicon powders without using any metal catalysts. The advantages of ... was also proposed. b -SiC nanowires can also be directly synthesized by heating single-crystal silicon wafer and graphite without metal catalysts [22]. The diameter of SiC ARTICLE IN P...
Ngày tải lên: 16/03/2014, 15:20
Characteristics of siox nanowires synthesized via the thermal heating of cu coated si substrates
... Cu- coated Si substrates. We have investigated the effect of Cu layer thickness on the growth of SiO x nanowires. We discuss the possible growth mechanism with respect to the role of the predeposited Cu ... solid phase with respect to the Si elements. Similarly, various forms of SiO x nanowires including straight, curved, and helical-shaped nanowires have been fabricated pre...
Ngày tải lên: 16/03/2014, 15:14
Dimensional evolution of silicon nanowires synthesized by au–si island catalyzed chemical vapor deposition
... Physica E 37 (2007) 153–157 Dimensional evolution of silicon nanowires synthesized by Au Si island-catalyzed chemical vapor deposition D.W. Kwak, H.Y. Cho, W C. Yang à Department of Physics ... increases, dissolution of more Si into Au Si droplets will lead to increasing Si chemical potential in the liquid droplets with a relationship of Dm Si ¼ kT ln p, where Dm Si is Si ch...
Ngày tải lên: 16/03/2014, 15:15
Deposition of carbon nanotubes on si nanowires by chemical vapor deposition
... crystalline cubic Si and b-SiC could be identi®ed. High resolution TEM images revealed that Si NW with carbon coating consisted of a single crystalline Si core and a sheath of carbon muti- layers with ... more diverse range of applications. Up to date, a composite of CNTs with SiNWs in longitudinal has been synthesized [7]. However, a composite of these two materials in transver...
Ngày tải lên: 16/03/2014, 15:04
High frequency FTIR absorption of sio2 si nanowires
... has no silicon single crystal core. Second, the difference comes from the interface structure of the SiO 2 /Si nano - wires. In SiO 2 /Si nanowires, the interface between silicon core and SiO 2 outer ... amorphous SiO 2 of silicon nanowires and in the interface be- tween silicon crystal and amorphous SiO 2 . How- ever, the detailed structural features of the surface of silicon nanowire...
Ngày tải lên: 16/03/2014, 15:05
Highly efficient and stable photoluminescence from silicon nanowires coated with sic
... photophysics and device physics. SiNW were synthesized by thermal evapora- tion from a mixture of silicon and silicon dioxide powder [14,15]. The SiNWs deposited on a silicon wafer have an average ... produce a thin coating layer of cubic silicon carbide (b-SiC) using an ion beam deposition technique. High resolution transmission electron microscopy (HRTEM) showed that silicon oxide shells...
Ngày tải lên: 16/03/2014, 15:05
Morphology and growth mechanism study of self assembled silicon nanowires synthesized by thermal evaporation
... The SiNWs were synthesized by thermal evaporation of SiO powders without any metal cata- lysts. The SiNWs grown on the sun¯ower-seed-shaped particles had sub-branches of SiNWs terminated by Si ... made of a Si core and a SiO 2 sheath. The one-dimensional growth of SiNWs is facili- tated by the SiO 2 sheath that con®nes the lateral growth of SiNWs, and the high absorptivity for Si O clu...
Ngày tải lên: 16/03/2014, 15:06