Coating drop-casting

The plastic nature of clays makes their immobilization onto a solid substrate electrode straightforward spin-coating, drop-casting, and sCTeen-printing techniques have all been successfully implemented (97, 98). Covalent attachment using silane linkages has also... 

The synthesis of redox polymers is generally performed before deposition (124). First, a polymer is synthesized by condensation or addition polymerization with at least one monomer that is ledox-aclive. The polymer is immobilized on the substrate by dip-coating, drop-casting, or spin-coating. These procedures must be carefully applied if homogeneous and pinhole free films are needed. 

Other applications use self-assembling fibers to coat materials. For example, preassembled peptide amphiphiles have been covalently immobilized on titanium implant surfaces via a silane layer (Sargeant et al., 2008). Primary bovine artery endothelial cells or mouse calvarial preosteoblastic cells spread on these coated surface and proliferated to a far greater extent than on samples where the peptide amphiphiles had been drop cast onto the metal surface. This study therefore suggests that covalent attachment is required in order to prevent fibers lifting from the coated surface and to encourage maximal cell growth. 

Fig. 3.10. PL lifetime of DPVBi/Ru(dpp) sensors with different sensing elements, (open circle) spin-coated sol-gel prepared from a sol containing 2.5mg mL GOx, (open triangle) spin-coated sol-gel prepared from a sol containing 7.5 mg mL GOx, open square) solution-based sensing element, and open diamond) drop cast film prepared from 30 xl containing 7.5 mg mL Ru(dpp) and 7.5 mg mL GOx. Excitation was obtained using a blue DPVBi OLED...

Fig. 9.1 Schematic illustrating the preparation of metal-insulator-metal electrostatic nanocapacitors based on the double-gyroid morphology. Firstly, the DG templates are replicated via nickel electroplating. Subsequent to template dissolution the metal nanostructure is coated with a few nanometer thick electrictdly insulating alumina layer by ALD. Lastly, a liquified low-melting point tdloy is drop-cast onto the sample and allowed to infiltrate the mesopoies. The two interdigitated metal networks which ate separated by the electrically isolating metal oxide form the active volume V of the electrostatic capacitor...

The second type of photosensitive SWNT-FET devices adopts SWNT networks as the transistor channel. A polymer layer is then deposited over the contacts and nanotubes by a drop-casting or spin-coating method. As shown in Figure 3.6, the coating of photosensitive polymer doesn t significantly... 

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