Sizing of a Microparticle Sphere

The peak current increases (tends towards the value obtained for a bare electrode) with decreasing scan rates, as the mass transport will not be hindered by small sphere sizes. With increasing scan rates, the diffusion layer thickness decreases, and minimizes the effects of mass transport on the voltammetric response. Eventually, numerical simulations of cyclic voltammograms as a function of scan rate will provide information on the microparticle sphere radius. 

8) The alternating direction implicit (ADI) method combined with a modified Thomas algorithm was used. 

Since its introduction in 1989 [3,4], the voltammetry of (immobilized) microparticles (earlier termed abrasive stripping voltammetry) has attracted considerable attention and initiated a wide range of experimental and theory-based studies. As outlined in Section 6.1, the first decade of investigations has been vell reviewed [5-8], while a recent monograph [9] has included the details of any diverse applications up until late 2004. Consequently, whilst the following sections will focus on the period between 2005 and the present, any earlier contributions deemed relevant to an understanding of the current investigations will also be cited or discussed. 

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