nanotubes and nanocones

... downloaded at www.jcrystal.com. My earliest implementation of routines for the creation and visualization of nanotubes and nanocones was realized in JSV (Java Structure Viewer), a program which I wrote ... a flat graphene sheet and then rolling it into a tube or a cone. Two types of nanotubes can be capped with parts of the well-known Buckyball (C 60 ). These are the {5,5} and t...

Ngày tải lên: 04/06/2014, 15:20

... (50 kV, 40 mA) and a scan speed of 0.5°/min in h–2h mode. The divergence, anti-scatter and receiving slits were fixed at 1 o . The crystallite size of AlF n (OH) 3Àn (n = 1.5, 1.62 and 1.65) was ... for 30 min and col- lecting the fragments on holey carbon copper-supported grids. Nitrogen adsorption and desorption isotherms were recorded at 77 K using an Accelerated Surface Area and...

Ngày tải lên: 19/03/2014, 16:48

... and characterization of nanofillers and nanocomposites, participated in the discussion, and drafted the manuscript. RV helped in nanocomposite preparation, participated in the discussion, and ... Science and Innovation (MICINN) under project MAT 2010-18749. MMG thanks the CSIC for a JAE-Pre grant. - 1 - Thermal conductivity of carbon nanotubes and graphene in epoxy nanofl...

Ngày tải lên: 20/06/2014, 23:20

... those D band, D 0 band and G band peaks changed only slightly. Additional Raman peaks from the ZnO shells appeared; the relatively strong peaks at 427 and 567 cm -1 correspond to E 2 high and A 1 (LO) ... sp 2 -hybridized carbon and a D band at *1346 cm -1 originating from disordered carbon [17, 18]. In addition to the D band, the D 0 band as a shoulder of the Fig. 2 Raman spectrum of...

Ngày tải lên: 21/06/2014, 08:20

... proposed growth mechanism for Ni nanotubes and nanowires in our work is different from others reported before and is easier for the readers to understand. The obtained Ni nanotubes are more likely to ... electrodeposition process for Ni nanotubes and nanowires. Figure 4a provides a clear understanding of the growth mechanism of Ni nanotubes. The junction between the electrode su...

Ngày tải lên: 21/06/2014, 20:20

... 1996; Da Ros and Prato, 1999; Tagmatarchis and Shinohara, 2001; Bosi et al., 2003; Nakamura and Isobe, 2003; Sarova et al., 2006; Bianco and Da Ros, 2007). 1.2 Cell Protection and Antioxidant ... Tsang and co-workers studied the interaction of protein, enzymes and DNA with carbon nano- tubes. They found that DNA molecules tended to cover the surface of nanotubes and the...

Ngày tải lên: 17/02/2014, 05:20

... 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. Lucas and P. ... Multi-Walled and Single- Walled Carbon Nanotubes. EELS Study T. Hanada, Y. Okada and K. Yase 29 Chapter 5 Electronic Structure of Single-Walled Carbon Nanotub...

Ngày tải lên: 05/03/2014, 17:20

... carbon nanotubes was originally performed to open the tips and to fill the cavities of carbon nanotubes [112, 113]. In order to covalently decorate the outside surface of multi-walled carbon nanotubes ... the conduction band of the semiconductor. Pt on the other hand acts as an electron scavenger and fails to achieve Fermi-level equilibration. The carbon nanotube is a good cand...

Ngày tải lên: 20/03/2014, 13:06

... synthesizing ␣-Fe 2 O 3 nanotubes, followed by reducing ␣-Fe 2 O 3 and re-oxidizing the Fe 3 O 4 to ␥-Fe 2 O 3 nanotubes. The magnetic properties of the Fe 3 O 4 and ␥-Fe 2 O 3 nanotubes were investigated ... 3 presents the SEM and TEM images of samples S1, S2 and S3. Fig. 3(a) and (b) show the morphologies of ini- tial synthesized ␣-Fe 2 O 3 nanotubes (sample S1), in which t...

Ngày tải lên: 20/03/2014, 13:06

... TiO 2 nanotubes; (b) EDX spectra of a nanotubular TiO 2 and a nanoporous WO 3 layer. R. Hahn et al. / Electrochemistry Communications 9 (2007) 947–952 951 Rapid anodic growth of TiO 2 and WO 3 nanotubes ... 1. Fig. 1a and b shows SEM images of bundles of closely packed TiO 2 nanotubes prepared in ClO À 4 and Cl À solutions. The tubes have an average diameter of 40 nm, a length of...

Ngày tải lên: 20/03/2014, 13:06