Stamp transfer electrodes

Stamp transfer electrodes for nonplanar and oversized surfaces... 

Figure 6.6 Stamp-transfer electrodes for nonplanar surface, (a) Fabrication of the stamp-transfer electrodes, (b) Examples of surfaces that adopt stamp-transfer electrodes. WindmiUer, J.R., Bandodkar, A.J., Parkhomovsky, S., Wang, J., 2012. Stamp transfer electrodes for electrochemical sensing on non-planar and oversized surfaces. Analyst 137, 1570-1575.

Tattoo-based electrochemical devices have been recently described for evaluating different physiologically relevant compounds in sweat or skin. Wmdmiller et al. (2012) developed stamp transfer electrodes for electrochemical sensing on nonplanar and oversized surfaces. The concept was demonstrated towards the voltammetric detection of dopamine, ascorbic acid and acetaminophen, as well as to quantify increasing levels of uric acid in human skin. 

Soft lithography (microcontact printing) was employed to pattern source and drain contacts. A poly(dimethylsiloxane) (PDMS) stamp, reproducing the electrode s layout, was used for transferring the PEDOTrPSS pattern on the substrate.353 It was possible to realize final electrode structures with a channel length of down to 2 pm.354-355... 

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