A new methodology for creating surface chemical gradients is reported. By way of a demonstration of the technique, gradients of amine/carboxyl and of hydrocarbon/carboxyl functionality are deposited over a distance of 11 mm. The gradient chemistries are examined by X-ray photoelectron spectroscopy (XPS) and chemical derivatisation of acid functional groups by TFE labelling.
No takes yet. Share an insight, caveat, or question.
Whittle et al. (2003) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: