Grids copper

The samples were examined before and after catalysis by SEM (Phihps XL 20) and HREM by both a JEOL 200 CX operating at 200 kV and a JEOL 4000 EX operating at 400 kV. The specimens for TEM were either directly glued on copper grids or dispersed in acetone by ultrasound, then dropped on the holey carbon grids. 

AOTF w/c RMs bearing the silver, silver iodide and silver sulfide nanoparticles were depressurized slowly and the nanoparticles in the cell were collected and re-dispersed in ethanol. Finally, the sample grids for the TEM (FEl TECNAl G ) measurements were prepared by placing a drop of ethanolic dispersion of nanoparticles on the copper grid. The morphology and size distribution of the silver, silver iodide, and silver sulfide nanoparticles were determined by TEM at an operation voltage of 200kV. The crystallinity of the silver, silver iodide, and silver sulfide nanoparticles was studied by electron diffraction techniques. 

Innocent surfaces do not allow formation of such extended 2D areas as has been demonstrated by using carbon coated copper grids (for TEM) or liquid surfaces as used for Langmuir-Blodgett techniques. Only islands... 

TEM Studies. Electron micrographs were obtained on JE0L, TEMSCAN --100 CX11 combined electron microscope and a HITACHI H1M1B (TEM) operated at 2 x 10 magnification. The specimens for TEM were obtained by placing a drop of the colloid solution on a copper grid coated by a carbon film. 

Visual estimation of nanoscrolls yield is difficult because they concentrate near the edges of copper grid support used in TEM studies. Nevertheless TEM images provide clear evidence of nanoscrolls presence in large amount. 

High resolution transmission electron microscopy (HRTEM) micrographies were performed with a JEOL JEM-3010 microscope operating at 300 kV (Cs= 0.6 mm, point resolution 1.7 A). Images were recorded with CCD camera (MultiScan model 794, Gatan, 1024 x 1024 pixels, pixel size 24 x 24 pm2). The powder samples were mixed in ethanol and then ultrasonicated for 10 min. A drop of the wet sample was placed on a copper grid and then allowed to dry for 10 min before TEM analysis. 

Collect sections on acetone-washed copper grids (see Subheading 2.2.) View directly or positive stain with uranyl acetate and lead citrate (sections can be stored in a grid box)... 

Boats for glass knives Conical centrifuge tubes Copper grids Dental wax... 

Pickup samples on 400-mesh copper grids with carbon film pretreated with alcian blue. 

TEM has been used to determine the shape and particle size of nanoparticles [27, 33]. Samples are prepared by placing a drop of preparation on copper grids, followed by negative staining with an aqueous solution of sodium phosphotungstate, phosphotungstic acid, or uranyl acetate [27, 163, 164]. Freeze fracturing with TEM has been... 

From soluble compounds like FAPPO, crystals of approx. 100-200 A thickness have been grown from thin solutions directly on a carbon coated copper grid (3mm/300 mesh) at room temperature by evaporation. With this method thin crystals with less dynamical effects are usually obtained which he flat on the grid providing a view along the thinnest direction. 

Fig. 26. High -resolution transmission electron microscopy (HRTEM) image of perfluoropoly-ether-modified G3 PPI dendrimers containing Pd metal nanoclusters prepared on aholey carbon copper grid by evaporation of a dilute solution of the dendrimer composite. Reprinted with permission from Ref. 100 Copyright 2000 WUey-VCH...

Figure 9. Elemental maps obtained using a scanning auger microscope—soot (C) particle trapped in a copper grid...

Transmission Electron Microscopy Transmission electron microscopy data were obtained by personnel in the Ultrastructure Laboratory at the Virginia-Maryland College of Veterinary Medicine using a JEOL lOOCX-II transmission electron microscope. Samples were imbedded in Poly-bed 812 epoxy resin and cured at 50-60°C for 2-3 days. Samples were then sectioned to between 800 and 1000 on either a Sorval MT2B or an LKB IV Ultramicrotome using glass knives and were placed on 200 mesh copper grids. 

Crosby AJ, Easolka MJ, Beers KL (2004) High-throughput craze studies in gradient thin films using ductile copper grids. Macromolecules 37 9968-9974... 

The reaction was so fast as to finish within 1 min, as shown by the transmission electron microscopy (TEM) images in Figure 3.3.2, for which each withdrawn sample on a copper grid was instantly quenched with liquid nitrogen and freeze-dried without melting. 

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