The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.
1Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, 2Department of Biochemistry and Molecular Biology, Gottwald Center for the Sciences, University of Richmond
Alkanethiolate stabilized gold colloids known as monolayer protected clusters (MPCs) are synthesized, characterized, and assembled into thin films as an adsorption interface for protein monolayer electrochemistry of simple redox protein like Pseudomonas aeruginosa azurin (AZ) and cytochrome c (cyt c).
Published October 4, 2011. Keywords: Bioengineering, Monolayer protected clusters, film assemblies, protein monolayer electrochemistry, azurin, self-assembled monolayers
1Department of Environmental Microbiology, UFZ - Helmholtz-Centre for Environmental Research
Chronoamperometric growth of anodic electroactive microbial biofilms in a fed-batch reactor using a three-electrode setup, controlled by a potentiostat, is demonstrated. The extracellular electron transfer is characterized using cyclic voltammetry in the presence of the electron donor and in the absence of the electron donor. Fundamental data analysis is demonstrated.
Published December 29, 2013. Keywords: Environmental Sciences, Electrochemistry, Microbial fuel cell, microbial bioelectrochemical system, cyclic voltammetry, electroactive bacteria, microbial bioelectrochemistry, bioelectrocatalysis
JoVE Applied Physics
1Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 2Department of Chemistry, University of Illinois at Chicago, 3Stanford Synchrotron Radiation Lightsource, 4Haldor Topsøe A/S, 5PolyPlus Battery Company
We describe the use of synchrotron X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) techniques to probe details of intercalation/deintercalation processes in electrode materials for Li-ion and Na-ion batteries. Both in situ and ex situ experiments are used to understand structural behavior relevant to the operation of devices
Published November 11, 2013. Keywords: Physics, X-Ray Absorption Spectroscopy, X-Ray Diffraction, inorganic chemistry, electric batteries (applications), energy storage, Electrode materials, Li-ion battery, Na-ion battery, X-ray Absorption Spectroscopy (XAS), in situ X-ray diffraction (XRD)
1Weldon School of Biomedical Engineering, Purdue University, 2Biomedical Engineering, University of Wisconsin-Madison, 3Biomedical Engineering, University of Michigan, 4Department of Biological Sciences, Purdue University
The electrode-tissue interface of neural recording electrodes can be characterized with electrical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Application of voltage biasing changes the electrochemical properties of the electrode-tissue interface and can improve recording capability. Voltage biasing, EIS, CV, and neural recordings are complementary.
Published February 24, 2012. Keywords: Neuroscience, neuroprosthesis, electrode-tissue interface, rejuvenation, neural engineering, neuroscience, neural implant, electrode, brain-computer interface, electrochemistry
1Department of Sciences and Chemical Technologies, University of Rome, Tor Vergata
A protocol to detect trichothecenes (mycotoxins of concern for human health) using a newly developed screening method based on a competitive immunochemical method and a final electrochemical detection is demonstrated.
Published October 23, 2009. Keywords: Biochemistry, Immunosensors, assay, antibody, magnetic bead, electrochemical, screen printed electrodes, array, toxin, food
JoVE Applied Physics
1MESA+ Institute for Nanotechnology, University of Twente
Procedures are outlined to prepare segmented and coaxial nanowires via templated electrodeposition in nanopores. As examples, segmented nanowires consisting of Ag and ZnO segments, and coaxial nanowires consisting of a TiO2 shell and a Ag core were made. The nanowires were used in photocatalytic hydrogen formation experiments.
Published May 2, 2014. Keywords: Physics, Multicomponent nanowires, electrochemistry, sol-gel processes, photocatalysis, photochemistry, H2 evolution
JoVE Applied Physics
1Center for Innovative Fuel Cells and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, 2School of Chemistry and Biochemistry, Georgia Institute of Technology
We present a unique platform for characterizing electrode surfaces in solid oxide fuel cells (SOFCs) that allows simultaneous performance of multiple characterization techniques (e.g. in situ Raman spectroscopy and scanning probe microscopy alongside electrochemical measurements). Complementary information from these analyses may help to advance toward a more profound understanding of electrode reaction and degradation mechanisms, providing insights into rational design of better materials for SOFCs.
Published September 20, 2012. Keywords: Materials Science, Chemistry, Electrical Engineering, Physics, electrochemistry, catalysts (chemical), spectroscopic chemical analysis (application), microscopes, Fuel cell, Raman, AFM, SOFC, Surface, Electrode
1MEMS Sensors and Actuators Laboratory (MSAL), Department of Electrical and Computer Engineering, Institute for Systems Research, University of Maryland, 2Institute for Bioscience and Biotechnology Research, Fischell Department of Bioengineering, University of Maryland
We present a microfluidic-based electrochemical biochip for DNA hybridization detection. Following ssDNA probe functionalization, the specificity, sensitivity, and detection limit are studied with complementary and non-complementary ssDNA targets. Results illustrate the influence of the DNA hybridization events on the electrochemical system, with a detection limit of 3.8 nM.
Published September 10, 2014. Keywords: Bioengineering, electrochemical impedance spectroscopy, DNA hybridization, biosensor, biochip, microfluidics, label-free detection, restricted diffusion, microfabrication
1Department of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, 2Materials Science, Zernike Institute for Advanced Materials, University of Groningen, 3ICTM - Center for Catalysis and Chemical Engineering
This article describes the preparation of well-ordered nickel nanofoams via electroless metal deposition onto nanoporous templates obtained from self-assembled diblock copolymer based supramolecules.
Published April 28, 2014. Keywords: Chemistry, polymers, polymer matrix composites, foam materials, block copolymers, self-assembly, supramolecules, gyroid, nanoporous, electroless plating, metal nanofoams
JoVE Applied Physics
1Department of Chemistry, The George Washington University, 2Lynntech
A protocol is presented to study multi-electron metal/air battery systems by using previous technology developed for the zinc/air cell. Electrochemical testing is then performed on fabricated batteries to evaluate performance.
Published August 5, 2013. Keywords: Physics, Materials Science, Chemistry, Chemical Engineering, Inorganic Chemicals, Chemistry and Materials (General), Composite Materials, Inorganic, Organic and Physical Chemistry, Metals and Metallic Materials, Nonmetallic Materials, Engineering (General), Electronics and Electrical Engineering, Physics (General), energy storage, metal/air battery, nanoscopic vanadium diboride, VB2, multi-electron oxidation, electrochemical testing, electrode, fabrication