Connecting electrodes with light: one wire, many electrodes

Abstract

The requirement of a wire to each electrode is central to the design of any electronic device but can also be a major restriction. Herein it is shown how electrodes can be connected using light such that a multielectrode device requires only a single physical wire.

Light-addressable Electrodes for Dynamic and Flexible Addressing of Biological Systems and Electrochemical Reactions

“…Due to the pH-sensitive poly(methacrylic acid) shell, locally induced pH changes led to an increase of the thickness and a softer LbL structure. Another principle for locally induced photoelectrochemistry by light was established by Choudhury et al who termed the technique "light-activated electrochemistry" [92]. It is based on functionalization of redox-active species on oxide-free silicon surfaces to perform light-addressed Faradaic electrochemistry on the electrode surface [93,94].…”

“…Polymer Polystyrene TiO 2 [110] Polyaniline WO 3 [111] Polyaniline TiO 2 [111] Polypyrrol TiO 2 [56,111,112,114,115,122] Polypyrrol n-Si [55,92] Polypyrrol ZnO [113] Others Calcium alginate gels a:Si [110] Calcium alginate gels TiOPc [85,86] Chitosan a:Si [87,88] Polyhistidine-tagged proteins TiO 2 [89] DNA oligonucleotids n-Si [119] DNA oligonucleotids a:Si [120]…”

Forming Ferrocenyl Self‐Assembled Monolayers on Si(100) Electrodes with Different Alkyl Chain Lengths for Electron Transfer Studies

“…The oxide levels are typically determined using x‐ray photoelectron spectroscopy (XPS). These results have motivated us to develop electrochemical devices on Si(100) electrodes protected from oxidation by using 1,8‐nonadiyne derived SAMs ,. Recently, we have begun to explore the electron transfer kinetics at these surfaces with ferrocene modified SAMs.…”

In My Element: Gold

“…For example, we have shown that on molecularly smooth single crystal golds urfaces ( Figure 1) you can measure the impact of the potential of the electrical double layer above am onolayer modified electrode by changingt he positioning a redox speciesa bove am onolayer at 0.11nmi ncrements. [3] At times our electrochemical research has moved away from gold and alkanethiols, particularly when exploiting properties only availablew ith semiconductors [4] but somehow we always seem to drawn back to gold. [3] At times our electrochemical research has moved away from gold and alkanethiols, particularly when exploiting properties only availablew ith semiconductors [4] but somehow we always seem to drawn back to gold.…”