Double band assembly

Figure 5. Steady state at ultramicroelectrodes. (a) Normalized theoretical concentration profiles for ferrocene chronoamperometric oxidation at a hemispherical electrode (r = 1 fim) under conditions where a steady state current is observed. From top to bottom, t = 0, 10, 10", 0.1 and 1 s (b) Theoretical simulation of ECL at a double band assembly, showing the current and ECL intensities (i jj and ECL jj are the limits at infinite time).

Figure 10.1 Classification of microelectrodes (A) random array, (B) ordered array, (C) paired electrode, schematic representation of a double band assembly, (D) interdigitated array, schematic presentation of IDA electrodes vertically arranged (E) linear array, (F) three-dimensional array, Utah electrode array (reprints from reference (28)). (for colour version see colour section at the end of the book).

Figure 10.5 Schematic representation of band electrodes in real space and after Schwarz-Christoffel transformations. Double-band assembly in real space (A) and conformal space (B, C) for steady-state (B) and non-steady-state (C) conditions. Interdigitated array of band electrodes in real...

Figure 10.7 Double-band assembly operating in generator/collector mode. (A) Relationship between feedback (l/ampl(f) = and collection efficiency (coU(t) = in absence of a chemical reaction. (B) Effect of a chemical reaction (EC mechanism) on the collection efficiency as a function of kg D. w/g = 2 and g/2(Df) = 0.005. k is the first-order rate constant of the chemical reaction.

Amatore C, Oleinick A, Svir 1 (2004) Simulation of diffusion-convection processes in microfluidic channels equipped with double-band microelectrode assemblies approach through quasi-conformal mapping. Electrochem Commun 6 1123-1130... 

The use of DNA molecules as wires in electronic systems may open a new opportunity in nanoelectronics. DNA has the appropriate molecular recognition features and well-characterized self-assembly. There is evidence to suggest that DNA is only a marginally better electron conductor than proteins [116-118], As a result, many studies have focused on various methods of DNA modification leading to improvement in its conductive properties. It is possible to enhance the conductivity of DNA by coating it with a thin film of metal atoms, but the molecular recognition properties of the DNA are then destroyed. An effective approach to this problem is the incorporation of metal ions into the DNA double helix [118-121], Preliminary results suggest that a metal ion-DNA complex may be a much better conductor than B-DNA, because the former shows a metallic conduction whereas the latter behaves like a wide-band gap semiconductor [118]. 

---