Scanning electron microscopy deposits

Figure 3. Scanning electron microscopy images of gold electrodes coated by the nanostructured TMPP/C12 monolayer after the electrochemical platinum deposition. The deposition charge was 41 and 160Cm for the left and right images, respectively. (Reprinted from Ref [18], 2005, with permission from Wiley-VCH.)...

Chong et al. [742] have described a multielement analysis of multicomponent metallic electrode deposits, based on scanning electron microscopy with energy dispersive X-ray fluorescence detection, followed by dissolution and ICP-MS detection. Application of the method is described for determination of trace elements in seawater, including the above elements. These elements are simultaneously electrodeposited onto a niobium-wire working electrode at -1.40 V relative to an Ag/AgCl reference electrode, and subjected to energy dispersive X-ray fluorescence spectroscopy analysis. Internal standardisation... 

The overlays thickness estimation is possible exploiting a twin fiber placed in the same deposition chamber and subject to the same coating procedure. The coated twin fiber can be cut by a precision cleaver and analyzed by scanning electron microscopy (SEM). One of the deposited thin overlay is clearly observable in the SEM image of the fiber section reported in Fig. 3.13. 

Finally, scanning electron microscopy (SEM) was used to study the morphology of plasma deposits obtained from HMDSO. 

The mechanisms of the crystal-building process of Cu on Fe and A1 substrates were studied employing transmission and scanning electron microscopy (1). These studies showed that a nucleation-coalescence growth mechanism (Section 7.10) holds for the Cu/Fe system and that a displacement deposition of Cu on Fe results in a continuous deposit. A different nucleation-growth model was observed for the Cu/Al system. Displacement deposition of Cu on A1 substrate starts with formation of isolated nuclei and clusters of Cu. This mechanism results in the development of dendritic structures. 

The microstructuie of films of the ferrocene dendrimers electrochemically deposited on platinum wire working electrodes was examined by scanning electron microscopy (SEM). The SEM micrograph in Figure 7 corresponding to a film of the octanuclear dendrimer 2 shows a sheet-like compact morphology and exhibits small agglutinations and some porosity. 

Semiconducting thin films of CdSe were electrochemically deposited on Ti substrates [186,187]. The film electrodes were characterized with photoelectrochemical imaging, optical microscopy, and scanning electron microscopy (SEM)/energy-dispersive X-ray analysis. 

Fig. 9.3.5 (A) Scanning electron microscopy on concentrated solution of 4.5-nm silver particles ([(Ag) ] = 4 X I0 3 M). Large aggregates on silver multilayers are present. (B) Absorption spectra of free 4.5-nm silver nanoparticles dispersed in hexane before (solid line) leaving a drop on the support, after washing the support with hexane (dashed line), and deposition on the support forming a 3D superlattice (a). ([(Ag) ] = 4 X I0 3 M).

Fig. 8 Different views of T. foetus hydrogenosomes ( ) after field-emission scanning electron microscopy (FESEM) (a) and freeze-etching (b,c). An isolated hydrogenosome obtained from T. foetus observed by FESEM, where details of its surface can be seen, b A calcium deposit in the peripheral vesicle (asterisk) c shows that the peripheral vesicle (arrow) presents a smooth surface, distinct from the organelle body. Bars = 50 nm. (From Benchimol 2000)...

---