Carboxylated graphene oxide nanosheets as efficient electrodes for high-performance supercapacitors
Published in Frontiers in Chemistry
Carboxylated graphene oxide nanosheets as efficient electrodes for high-performance supercapacitors
C-Rate Capability of Ion-Beam Sputter Deposited Silicon, Carbon and Silicon/Carbon Multilayer Thin Films for Li-Ion Batt...
Published in Journal of The Electrochemical Society
Silicon is highly desired as high-energy density active Li storage material in Li-ion batteries, but usually does not withstand extended cycling. This work examines the C-rate capability up to Li plating and the long term cycling for ion-beam sputter-deposited amorphous (Si/C) × 10 multilayers (MLs) (with individual layer thicknesses between 5 and ...
Nanoporous Carbon Electrodes Derived from Coffee Side Streams for Supercapacitors in Aqueous Electrolytes
Coffee, as one of the most traded resources, generates a vast amount of biogenic by-products. Coffee silver skins (CSS), a side stream from the roasting process, account for about 4 wt.%. Despite the abundancy of CSS, possible routes to generate added value for broad applications are limited. Herein, we present an approach to use CSS as a precursor...
Feasibility of control of particle assembly by dielectrophoresis in liquid-cell transmission electron microscopy.
Published in Microscopy (Oxford, England)
Liquid-cell transmission electron microscopy (LC-TEM) is a useful technique for observing phenomena in liquid samples with spatial and temporal resolutions similar to those of conventional transmission electron microscopy (TEM). This method is therefore expected to permit the visualization of phenomena previously inaccessible to conventional optica...
Graphene-Enabled High-Performance Electrokinetic Focusing and Sensing.
Published in ACS nano
Transverse isoelectric focusing, i.e., isoelectric focusing that is normal to the fluid-flow direction, is an electrokinetic method ideal for micro total analysis. However, a major challenge remains: There is no electrode system integrable in a microfluidic device to allow reliable transverse isoelectric focusing and electrokinetic sensing. Here, w...
Synergetic Effect of Polyaniline and Graphene in Their Composite Supercapacitor Electrodes: Impact of Components and Par...
The current development of clean and high efficiency energy sources such as solar or wind energy sources has to be supported by the design and fabrication of energy storage systems. Electrochemical capacitors (or supercapacitors (SCs)) are promising devices for energy storage thanks to their highly efficient power management and possible small size...
Sequential epiretinal stimulation improves discrimination in simple shape discrimination tasks only
Published in Journal of Neural Engineering
Objective. Electrical stimulation of the retina can elicit flashes of light called phosphenes, which can be used to restore rudimentary vision for people with blindness. Functional sight requires stimulation of multiple electrodes to create patterned vision, but phosphenes tend to merge together in an uninterpretable way. Sequentially stimulating e...
Evaluation of Activated Carbon and Platinum Black as High-Capacitance Materials for Platinum Electrodes
The application of direct current (DC) produces a rapid and reversible nerve conduction block. However, prolonged injection of charge through a smooth platinum electrode has been found to cause damage to nervous tissue. This damage can be mitigated by incorporating high-capacitance materials (HCM) (e.g., activated carbon or platinum black) into ele...
Corrosion of Transparent Electrodes Study
Published in Advances in Materials Science
This work reports a study of corrosion lifetime of transparent electrodes deposited on the microscopic glass substrate. A procedure was developed for obtaining the transparent electrode by spray method. The corrosion lifetime variation in the presence of 1.5 M NaOH medium chemically degraded at room temperature before and after gamma irradiation wa...
Fundamental Concepts of Bipolar and High-Density Surface EMG Understanding and Teaching for Clinical, Occupational, and ...
Surface electromyography (sEMG) has been the subject of thousands of scientific articles, but many barriers limit its clinical applications. Previous work has indicated that the lack of time, competence, training, and teaching is the main barrier to the clinical application of sEMG. This work follows up and presents a number of analogies, metaphors...
