Tuning the functional interface of carbon nanotubes by electrochemistry: Toward nanoscale chemical sensors and biosensors

Abstract

Abstract

25th Anniversary Article: Label‐Free Electrical Biodetection Using Carbon Nanostructures

“…One way to overcome the drawback of serial processing is to utilize directed positioning methods such as AC dielectrophoresis . Combining this with scalable photolithography methods, we have demonstrated the fabrication of sensors with a high device yield . The advantage here is that almost all of the devices exhibit semi‐metallic behavior with low resistances, which are beneficial for the realization of sensors and for obtaining a reproducible sensor response.…”

“…Most of these mechanisms also apply for the case of biodetection using graphene. There are basically four mechanisms that have been theoretically proposed to account for the sensor response: (i) contact effects, (ii) charge transfer or doping, (iii) screening or capacitance variations and (iv) charge scattering or mobility changes . We will first discuss the case of the effect of Schottky barrier formed at the nanostructure‐metal contact.…”

Electrochemical and Electron Paramagnetic Resonance Study of the Mechanism of Oxidation of Phenazine-di-N-oxide in the Presence of Isopropyl alcohol at Glassy Carbon and Single-Walled Carbon Nanotube Electrodes

“…It is known [9][10][11][12][13], that electrodes made of nanostructured carbon single-(SWCNTs) and multi-walled (MWNTs) nanotubes, nanopaper, nanofibers) were used in electrocatalytic processes.…”

Recent progress in atomistic simulation of electrical current DNA sequencing

“…Together with the exponential growth of nanoscience and nanotechnology on low-dimensional carbon nanomaterials, it would be natural to consider CNTs and graphene with excellent charge transport properties (Charlier et al 2007;Cresti et al 2008;Das Sarma et al 2011;Kang et al 2009) for the DNA sequencing based on electrical currents. Moreover, both CNTs and graphene provide enormous possibilities in tailoring their electronic and transport properties by controlling their atomic structures, which represents a huge potential for biosensing applications in general (Artiles et al 2011;Balasubramanian et al 2012). …”