Nanomaterials for Nanoscience and Nanotechnology part 3 potx
Nanomaterials for Nanoscience and Nanotechnology part 3 potx
... reliable estimates of other parameters, such as structure [32 , 35 , 36 ], mean particle diameter [34 ] and struc- tural disorder [32 , 35 , 36 ]. It is important to note that our examples dealt with ... 1986, 56, 2076. [32 ] M. A. Marcus, M. P. Andrews, J. Zegenhagen, A. S. Bommannavar and P. Montano, Phys. Rev. B 1990, 42, 33 12. [33 ] A. Balerna et al., Phys. Rev. B 1985, 31 ,...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 1 pptx
... levels, bands are formed. An energy gap between the con- duction band and the valence band would be formed, which is a key factor in deter- Nanomaterials for Nanoscience and Nanotechnology 5 Part ... nanocrystals and emphasize how the struc- tures and the properties are characterized using the techniques presented in the book. Nanomaterials for Nanoscience and Nanot...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 2 pps
... 147 1.6 0 0 fcc 30 9 2.2 0 0 fcc 561 2.8 0 0 ico 55 1.1 40 ± 14 29 ± 10 ico 147 1.6 7 ± 714± 13 ico 30 9 2.1 0 1 ± 1 ico 561 2.7 0 1 ± 1 dec 39 1.0 30 ± 31 5± 2 dec 116 1.5 20 ± 14 31 ± 21 dec 258 ... used to obtain structural information from experimental diffraction data. This will be outlined in Sec- tion 2 .3. 3 below. 2 .3. 2.1 Crystalline particles Single crystal nanoparticles ex...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 4 docx
... Microscopy and Spectroscopy of Nanoparticles 39 Figure 3- 2. Abbe's theory of image formation in an one-lens transmission electron microscope. This theory is for a general optical system in TEM. 3 ... (Hardcover); 3- 527-2960009-4 (Electronic) 3. 2 High-resolution TEM lattice imaging 3. 2.1 Image formation As a start, we first illustrate the image formation process in an TEM...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 6 pdf
... electron from 2p state to 3d levels leads to the formation of white lines. The L 3 and L 2 lines are the transitions from 2p 3/ 2 to 3d 3/ 2 3d 5/2 and from 2p 1/2 to 3d 3/ 2 , respectively, and their intensities ... (Figure 3- 23c), resulting in the emission of Auger electrons. Accompanying to these processes, second electrons can be emitted from the valence band. The difference...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 8 ppt
... overlapping discs. The numeral 2 stands for two- beam interference, 3 for three-beam interference, 4 for four-beam interference, and the letter D indi- cates detector positions for dark-field lattice imag- ing. The ... very powerful, imaging modes which can provide high-resolution structural information about nanoparticles. 4 .3. 3 High resolution BF and DF STEM imaging When a f...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 9 pot
... of Nanoparticles 1 03 Figure 4-16. Intensity and radius data from particles in HAADF and SE images of silver nanoparticles plotted as (intensity) 1 /3 against particle radius R. The HAADF and SE ... 100 keV electrons [28 32 ], and a resolution of less than 0. 13 nm has been achieved by using 30 0 keV electrons [33 , 34 ]. Because of the high atomic-number sen- sitivity and high...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 10 pps
... with the size of the particle and the highest image inten- sity is approximately at a distance d =(R ± L) from the center of the particle. For very large particles, the particle contrast evolves ... electrons from spherical particles of different sizes and the corresponding SE intensity line-scans across the particles. The parameters R and L represent the particle radius and the ave...
Ngày tải lên: 12/08/2014, 02:23
Nanomaterials for Nanoscience and Nanotechnology part 11 pdf
... 1979. [ 133 ] N. D. Browining, M. F. Chisholm, S. J. Pennycook, Nature 19 93, 36 6, 1 43. [ 134 ] S. J. Pennycook, N. D. Browning, D. E. Jesson, M. F. Chisholm, A. J. McGibbson, Appl. Phys. 19 93, A57, 38 5. [ 135 ] ... Phys. Lett. 19 93, 63, 30 11. 132 Liu smallest silver particles have a pixel value of about 30 at the center of the particle (indicated by the arrow in the silver Auger...
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nanomaterials for nanoscience and nanotechnology, 2000, p.132
... 15 13. Nanomaterials for Nanoscience and Nanotechnology 11 3. 2 High-resolution TEM lattice imaging 3. 2.1 Image formation As a start, we first illustrate the image formation process in an TEM [2]. For easy illustration, ... nanocrystals and emphasize how the struc- tures and the properties are characterized using the techniques presented in the book. Nanomaterials for...
Ngày tải lên: 04/06/2014, 15:19