We welcome readers to this Special Issue of C. From the standpoint of economics of energy storage, carbon electrodes offer the practicality of large-scale applications with the promise of improved performance. Key to increases in energy storage and power delivery are the heterogeneous electron transfer (HET) rates with dissolved redox species. Perhaps the most common allotrope of carbon, graphi...

A 0.5 Vrms, 12 W wirelessly powered patch type fabric sensor is presented for wearable body sensor network to continuously monitor personal bioelectric signals. Thick film electrodes are screen printed on the fabric with various metal components and their impedances of ~100k are characterized. A 2-stage nested chopped analog readout front end (AFE) is optimized for the fabric sensor with reduce...

Retraction This manuscript [1] has been retracted for inappropriate and unattributed text duplication from a previous paper published in Drug Testing and Analysis [2]. References 1. Alarfaj NA, Ammar RA, El-Tohamy MF: Disposable screen-printed sensors for determination of duloxetine hydrochloride. Chem Central J 2012, 6:6. A: Seleim: Towards disposable sensors for drug quality control: Dextrome...

We report a self-contained electrochemical enzyme linked immunosorbent assay in microchannel devices constructed from low temperature co-fired ceramic with screen-printed gold for fast and sensitive assays. No one has previously reported a device constructed from these materials for combined immobilization and electrochemical detection. These low temperature co-fired ceramic microchannel device...

Analytical chemical information is needed in all areas of human activity including health care, pharmacology, food control and environmental chemistry. Today one of the main challenges in analytical chemistry is the development of methods to perform accurate and sensitive rapid analysis and monitoring of analytes in ‘real’ samples. Electrochemical biosensors are ideally suited for these applica...

Screen-printing technology is widely used for the mass-production of disposable electrochemical sensors. The practical utility of carbon screen-printed electrodes has been exploited, despite the fact that little is known about the nature of the electrode reactions. (Wang, J.; Pedrero, M.; Sakslumd, H.; Hammerich, O.; Pingarron, J. Electrochemical activation of screenprinted carbon strips. The A...

A novel biosensor based on carbon nanofibers/diamine oxidase was prepared by modification of screen-printing electrodes. The enzyme diamine oxidase was immobilized onto the carbon nanofibers modified carbon screen-printed electrodes by drop and dry method followed by cross-linking reaction with glutaraldehyde. The presence of norepinephrine in analyzed samples was correlated to increasing of ca...

A novel multi-channel electrode array sensing device was fabricated by screen-printing techniques using 96-well plate as the template. To confirm its practical value, we developed a one-step preparation of multi-walled carbon nanotubes (MWCNTs) doped electrode array by an ink containing MWCNTs, which was applied to the simultaneous detection of a variety of biological samples and environmental ...

The possibility that electrodes might serve as an electron acceptor to simulate the degradation of aromatic hydrocarbons in anaerobic contaminated sediments was investigated. Initial studies with Geobacter metallireducens demonstrated that although toluene was rapidly adsorbed onto the graphite electrodes it was rapidly oxidized to carbon dioxide with the electrode serving as the sole electron ...