Coating methods electrospraying

Y.-R. Chen and G.-R. Her, A simple method for fabrication of silver-coated sheathless electrospray emitters, Rapid Commun. Mass Spectrom., 17 (2003) 437-441. 

Desorption ESI (DESI) was introduced by Takatz et al. [102]. The phenomenon actually was observed earlier but was discarded as a nuisance (e.g., an analyte or calibration mixture that coated the entrance of the transfer capillary and contributed to undesired peaks in the spectra). The idea of using the electrospray for desorption is as clever as it is simple. The method is sensitive and large species such as proteins can be detected. The ions observed are more or less the same as with regular ESI. 

TiOj coated fabric filters were prepared in a one-step process by the solvothermal method, and their properties were compared with those electrosprayed with Degussa P25. Filters coated with TiO nanoparticles prepared by the solvothermal method were superior to the commercial TiO powder in terms of particle size and homogeneity. A significant amount of bactericidal activity towards E. coli was successfully implanted into fabric filters by dip coating a solvothermally prepared TiO dispersion. 

Use of 3D foams is also a popular method for bone regeneration applications, although they are most often employed for trabecular bone regeneration [152,154]. There are a few methods utilized to create foams for this application, one of the most popular being a polymer foam replication technique, in which a polymer foam is either electrosprayed or immersed into a HAp/bioactive glass particle slurry in order to fully coat the foam and create a trabecular bone-like aichitecture. However, other methods are also utilized, including creating composite foam solutions that are injectable and form once inside the body [153]. Results of Fu et al. [152] have indicated mechanical properties similar to those of natural trabecular bone. 

On the basis of their differences in isoelectric point (pi), phosphorylated proteins can be separated in capillary isoelectric focusing (CIEF). Wei et al. employed a CIEF method using a capillary covalently coated with linear polyacrylamide and a pH gradient from 4 to 6.5 for the resolution of mono- and diphosphorylated ovalbumins. Proteins were detected by their UV absorbance at 280 nm. Additional ovalbumin variants within each of the mono- and diphosphoovalbumins, differing in their amount of glycosylation, were further analyzed by online CIEF-electrospray ionization (ESI)-MS. 

It has been shown that nanometer-scale PMBN structures can be formed on the surface of an electrode using an electrospray deposition (ESD) method, enlarging the surface area available for conjugation of biomolecules. A much larger quantity of biomolecules could be immobilized on the ESD surface compared with a planar spin-coated surface. This resulted in a significant increase in the signal from an enzyme-linked immunosorbent assay (ELISA) carried out using immobilized enzymes. ... 

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