Deposition of carbon nanotubes on si nanowires by chemical vapor deposition

... Deposition of carbon nanotubes on Si nanowires by chemical vapor deposition Y.F. Zhang, Y.H. Tang, Y. Zhang, C.S. Lee, I. Bello, S.T. Lee*Center of Super-Diamond & Advanced ... Department of Physics & Mater. Sci., City University of Hong Kong,83 Tat Chee Avenue, Kowloon, Hong Kong, ChinaReceived 19 July 2000Abstract By using a hot ®lament chemical vapor deposition (HFCVD) ... deposition (HFCVD) method, deposition of carbon on Si nanowires (Si NWs) has been studied. Multi-walled carbon nanotubes (CNTs) were found to form on the surfaces of Si NWs at 900°Cwith a good...

Iron catalytic growth of prism shaped single crystal silicon nanowires by chemical vapor deposition of silane

... SummaryIn conclusion, by chemical vapor deposition of silane,the large-scale SiNWs were grown under the catalysis of Fe particles at the lower temperature – 450 °C. These nanowires have a diameter of ... images of silicon nanostructures growth by different pyrolysis time of silane. (a) a triangle-shaped silicon tip grown on a CNT by 30-minpyrolysis time. (b) A rectangle silicon grown on a CNT by ... transistors (FETs) [5] and so on. Manyefforts have been made to prepare silicon nanowires (SiNWs) by different methods, such as laser ablation[6,7], thermal evaporation deposition [8], chemical vapor deposition...

Dimensional evolution of silicon nanowires synthesized by au–si island catalyzed chemical vapor deposition

... Physica E 37 (2007) 153–157Dimensional evolution of silicon nanowires synthesized by Au Si island-catalyzed chemical vapor deposition D.W. Kwak, H.Y. Cho, W C. YangÃDepartment of Physics ... 81.15.GhKeywords: Si nanowires (Si- NWs); Au Si alloy droplets; VLS; Chemical vapor deposition; Diffusion kinetics; Morphological evolution1. IntroductionThe ongoing reduction of electronic device size has ... of silicon nanowires (Si- NWs) on Si (0 0 1) and (1 1 1) substratessynthesized using nanoscale Au Si island-catalyzed rapid thermal chemical vapor deposition. The Au Si islands are formed by...

Hybrid nanocomposite of fe nanoparticles on sio2 nanowires by sublimation route

... the front side of SiO2NWs, while no Fe NPs were found on the back side of SiO2NWs.4. ConclusionFe NPs dispersed on the surface of SiO2NWs can beprepared simply by heating silicon wafer ... furnace by thefollowing reaction,SiOðgÞ→ Si :ðsÞþSiO2ðsÞð2ÞAs a result, Si/ SiO2 nanowires appear, and further oxidation of nanowires could lead to the formation of pure SiO2 nanowires. After ... spectrum on the nanowires, whichcontains the signals of Si, O, C and Cu elements. Considering the nanowires were supported by a copper grid with carbon film in TEMsamples, C and Cu signals in...

Silicon quantum wires arrays synthesized by chemical vapor deposition and its micro structural properties

... arrays of silicon nanowires (SiNWs) have been synthesized by a chemical vapor deposition (CVD)template method without catalyst. The micro-structures of the SiNWs were studied by high-resolution transmissionelectron ... inamorphous and transition alumina and these siteshave the intrinsic catalytic activity of transitionalumina in front of the decomposition of silane[23]. Therefore it is possible that the internalchannel ... oriented growth of SiNWs.4. ConclusionIn conclusion, the morphologies and micro-structures of well-aligned SiNWs arrays synthe-sized by CVD template method were investigated by electron microscopy....

Photoluminescence of silicon nanowires obtained by epitaxial chemical vapor deposition

... of silicon nanowires (SiNWs) obtained by the chemical vapor deposition method with a copper-catalyzed vapor liquid–solid mechanism. The nanowires have a typical diameter of 200 nm. Spectrum of ... thin ﬁlms [8–10].Simulation of the emission spectrum of an ehp by a convolu-tion product of the density of states of the carriers affected by theFermi–Dirac distribution is performed:IðhuÞ¼Z1À1reðÞrhð ... carriers in SiNWs could explain thedifference of shape and recombination energy of this contribution compared to the recombination of free exciton in the bulk silicon. The electronic system...

The Science and Technology of Carbon Nanotubes potx

... 1 Chapter 2 Synthesis and Purification of Multi- Walled and Single-Walled Carbon Nanotubes M.Yumura 2 Chapter 3 Electron Diffraction and Microscopy of Carbon Nanotubes S. Amelinckx, ... a long time that carbon 5 fibre is synthesized by catalytic decomposition of hydrocarbon [36] in the reactor shown in Fig. 4. Endo et al. reported that MWCNT is contained in carbon ... Large-Scale Synthesis of Carbon Nanotubes by Pyrolysis K. Tanaka, M. Endo, K. Takeuchi, W. -K. Hsu, H. W. Kroto, M. Terrones and D. R. M. Walton 143 Chapter 13 Carbon Nanotubes...

206
1,545
0

Báo cáo " Growth of CdS thin films by chemical bath deposition technique " pptx

... deposition of CdS film has been explored by various techniques, such as thermal evaporation [3], sputtering [4], molecular beam epitaxy [5], spray pyrolysis [6], chemical bath deposition [7]. Chemical ... The deposition time is chosen to be 2 h for the bath containing 25 ml of 1M CdSO4 solution and 9 h for the bath with 3 ml of 1M CdSO4 solution. 2.2. Characterization The X-ray diffraction ... spectrofluorometer (Jobin Yvon Spex) using a Xenon400 lamp as the excitation light source. 3. Results and discussion 3.1. X-ray Diffraction (XRD) Analysis The typical diffractogram of the...

Accounting for carbon - The impact of carbon trading on financial statements pptx

... project on carbon emission accounting models but have not yet published a conclusion. • In May 2008 the IASB scope discussion confirmed that the project will cover all tradeable emission rights ... addressing those areas of concern and can provide insight into some of the key questions that businesses may be asking. To receive electronic copies or additional information about any of ... that it will continue to be accurate in the future. No one should act on such information without appropriate professional advice after a thorough examination of the particular situation. © 2008...

Effect of tunneling current on the growth of silicon islands on si(111) surfaces with a scanning tunneling microscope

... rates of silicon islandgrowth on Si( 111) surfaces with the STM werealong the surface [18]. It is important to deﬁnethe sort of conditions on the surface that are obtained as a function of tunneling ... Results and discussion on the STM tip at the initial stages of the tip–sample interaction very likely occurs in the growth The reproducible formation of the 3D siliconislands on the Si( 111) surface ... distinguish mechanisms of the early stageand late stage of island growth. At the late stage,the transfer of silicon atoms from the STM tip by re-evaporation of the silicon that was accumulated...

Xem thêm

Từ khóa: electronic properties of carbon nanotubes probed by magnetic measurements large scale synthesis of carbon nanotubes by pyrolysis surface modification of carbon nanotubes cnts for composites physics of carbon nanotubes electronic and structural properties of carbon nanotubes scanning tunneling microscopy of carbon nanotubes and nanocones Nghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoại Nghiên cứu tổ hợp chất chỉ điểm sinh học vWF, VCAM 1, MCP 1, d dimer trong chẩn đoán và tiên lượng nhồi máu não cấp Nghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt nam đề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giải Biện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọ Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit ĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN Trả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Phát hiện xâm nhập dựa trên thuật toán k means Nghiên cứu, xây dựng phần mềm smartscan và ứng dụng trong bảo vệ mạng máy tính chuyên dùng Nghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000 Tìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tin Thơ nôm tứ tuyệt trào phúng hồ xuân hương Tổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vật Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vật chuong 1 tong quan quan tri rui ro Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật HIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀM TÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ