Transmission electron micrograph solution

Figure C2.17.2. Transmission electron micrograph of a gold nanoneedle. Inverse micelle environments allow for a great deal of control not only over particle size, but also particle shape. In this example, gold nanocrystals were prepared using a photolytic method in surfactant-rich solutions the surfactant interacts strongly with areas of low curvature, thus continued growth can occur only at the sharjD tips of nanocrystals, leading to the fonnation of high-aspect-ratio nanostmctures [52].

Figure 2 The transmission electron micrographs of samples cast from solution containing 1 wt% of polymer, (a) the block copolymer BCl, and (b) the microsphere, MCI [24].

The microphase structure was clearly observed in transmission electron micrographs of the film of amphiphilic copolymers cast from aqueous solutions [29, 31]. An important finding was that no microphase structure was observed for the film cast from organic solutions. This difference indicates that a microphase structure is formed in aqueous solution, but not in organic solution. Different hydrophobic groups showed considerably different morphological features i.e. whether microphase separation leads to a secondary or higher structure depends on the type of hydrophobic units in the copolymers [31],... 

Fig. 4 Human corneal endothelium following 3-hour perfusion with lactated Ringer s solution (a) scanning electron micrograph (2100 x) (b) transmission electron micrograph (9100 x ). (Courtesy of H. Edelhauser.)... 

Fig. 93. Transmission electron micrograph of electrochemically generated silver particles under dihexadecyl phosphate monolayers kept at a surface area of 45 A2/molecule. The monolayer was floated on a 1.0 x 10-2 M AgN03 solution...

Fig. 114. Transmission electron micrograph (TEM) at limiting aperture coverage of PbS crystals formed by the slow (30 min) infusion of H2S to an AA monolayer in the Lauda film balance (kept at it = 26 mNm 1 surface pressure) floating on an aqueous 5.0xl0 4M Pb(N03)2 solution. The PbS particulate film was deposited on a formvar-coated, 200-mesh copper grid [647]...

A mixture consisting of aniline ( 0.2 g) and (lS)-(+) camphorsulfonic acid (3.48 g) was dissolved in 10 ml of water and then treated with five separate portions of 0.1 g of ammonium peroxydisulfate dissolved in 1 ml water. Each successive portion was added when the solution turned from blue to green while the reaction mixture was maintained at 20°C. After the additions were completed the mixture was centrifuged and the product washed with water. The circular dichroism spectrum of the product suspensed in water indicated a molar ellipticity of about 90 x 103 deg-cm2/dmol. Transmission electron micrographs showed that the product had a nanofibrous structure with fiber diameters from 30 to 70 nm and had a length of several hundred nanometers. 

Figure 6.18 Transmission electron micrographs of protein structures from solutions of 3 wt% a-lactalbumin incubated with 4 wt% Bacillus licheni-forrnis at 50 °C (75 mM Tris-HCl, pH = 7.5) at different values of the cal-cium/a-lactalbumin molar ratio R. The image dimensions are 2100 nrn x 2600 nm Reproduced from Gravcland-Bikkcr et al. (2004) with permission.

Fig. 3.5 A transmission electron micrograph of collapsed miclles isolated from a solution of a PS-PI diblock in dimethylacetamide (Booth et al. 1978). The micelles were stained with 0s04 and lightly shadowed in the dry state with C/Pt. The scale bar indicates 200 nm.

Fig. 5.24 Transmission electron micrograph of crystals (etched with ethanol) formed by a PS-PEO diblock (Mn = 34.1 kg mol-1, 66wt% PS) crystallized from solution in xylene (Lotz et al. 1996).

Figure 8.6 Morphological variation of DNA. Transmission electron micrographs of T4 DNA are shown, except for the rod structure where A DNA is used. The scale bar is 100 nm. The giant toroid is formed under a high concentration of spermidine in the buffer solutions with rather high salt (Yoshikawa et al, 1999). The segregated structure is generated by PEG-A (polyethylene glycol with pendent amino groups Yoshikawa et al., 1997b). Further explanation on the experimental conditions is available in the text.

Fig. 7.9 Dendritic phase-transfer catalyst according to Vogtle et at. (left) transmission electron micrograph of the dendritically stabilised gold nanoparticle (black) after reduction of the gold salt solution in the organic phase...

Figure 3.17 (Top) Transmission electron micrographs of mesoporous silica materials prepared by adding increasing amounts of lecithin to a typical MCM-41 synthesis solution. This biomolecule induces the formation of circular-shaped mesopores. (Bottom) A plausible scheme of the...

Fig. 22 Cryogenic transmission electron micrograph of supermicelles in solution. Reprinted with permission from ref [99]. Copyright (2003) American Chemical Society...

Figure 7. Transmission electron micrographs of solution-cast films of (upper left) 1/312, (lower left) 1/4/3, and (above) 1/6/5. Spherulite size decreases with decreasing hard-segment content.

Figure 3. Strained solution cast polyimide exhibiting microvoids and shear bands (transmission electron micrograph, unshadowed)...

Figure 28. (a) Transmission electron micrograph of PDBS crystals grown in a thin film by evaporation of THF solution at 100 °C followed by slow cooling to ambient temperature, (b) Typical electron diff raction pattern from regions such as that shown in part a. 

Fig. 5.2. Transmission electron micrographs of maghemite > -Fe203 nanoparticles prepared by hydrolysis of Fe(lll) salts in refluxing propylene glycol in the presence of amine capping agents. The nanoparticles are soluble in toluene solutions of n-octylamine and, as a result, display a tendency for superlattice self-...

Einally, europium oxide nanorods have been prepared by the sonication of an aqueous solution of europium nitrate in the presence of ammonia [85]. The particle sizes measured from transmission electron micrographs and HRSEM are about 50 X 500 nm (W x L). Sonication of an aqueous solution of europium nitrate in the presence of ammonia results in the precipitation of europium hydroxide The as-prepared material is europium hydroxide, as confirmed by TGA, DSC, XPS, and Mossbauer spectroscopy measurements, as well as by PXRD of the as-prepared sample assisted by microwave irradiation... 

Figure 6 Human comeal endothelium following three-hour perfusion with solution devoid of essential nutrients (A) scanning electron micrograph (2100x), (B) transmission electron micrograph (9100x). Source Courtesy of H. Edelhauser.

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