We present an innovative electrochemical probe for the monitoring of pH, redox potential and conductivity in near-field rocks of deep geological radioactive waste repositories. The probe is composed of a monocrystalline antimony electrode for pH sensing, four AgCl/Ag-based reference or Cl- selective electrodes, one Ag₂S/Ag-based reference or S2- selective electrode, as well as four platinum ele...

The interaction between ionomer (ion-conducting polymer) and catalyst particles in porous electrodes of electrochemical energy-conversion devices is a critical yet poorly understood phenomenon that controls device performance. This interaction stems from the electrode precursor inks, which also governs porous-electrode morphology during formation. In this letter, we probe the origin interaction...

the reduction process for some quinones has been studid by cyclic voltammeby, rotating disk electrode voltammetry and chronopotentiometry in chloroform at platinum, gold and glassy carbon electrodes using tetrabutylmonium perchlorate (tb ap) as supporting eiectrolyte. the results obtained from this study reveal that the reduction of the quinones is two one-electron processes, the first reductio...

Controlling protein interactions at the implanted electrode interface is becoming an important strategy for the management of foreign body responses that have proven to be detrimental to the long-term performance of neural prosthesis. In this study, PEGylation was conducted on platinum bio-electrodes to render the surface protein-resistant. The PEGylated electrode was investigated using a quart...

furan is a possible human carcinogen in many types of foods. a new and sensitive electroanalytical method for determination of furan has been developed and validated. the best condition forelectrochemical response was obtained with 0.1 m britton-rabinson buffer solution (ph=5) a glassy carbonelectrode (gce) was used as the working electrode, a ag/agcl/ kcl(sat.) electrode served as the referenc...

We report a high-density electrode array fabricated using complementary metal oxide semiconductor (CMOS) techniques that contains 8,192 individually addressable platinum working electrodes in a 2 mm × 2 mm area along with an on-chip potentiostat. Microfluidic devices were mounted on top of the electrode array to control fluid delivery to evaluate the spatial and temporal resolution achievable w...