Inductive coupling is widely used for powering biomedical implants, but is inadequate when transmitting low-frequency waveforms. We demonstrate that with amplitude modulation, specific waveforms can be transmitted via integrated receiving coils and passive demodulators. An ‘inlaid electroplating’ process with through-wafer plating is used to reduce internal resistance of microcoils and provide ...

Power electronic converters are becoming more and more popular for various industrial applications. To overcome the limitation of semiconductors current and voltage ratings in high power applications, series and parallel connection of switches is often considered an effective solution. In addition, stepped waveform in the output of inverter has better harmonic spectrum than 2-level waveform in ...

This paper presents a microcontroller-based neural interface capable of producing arbitrary current-mode waveforms for use in developing and evaluating electrical stimulation strategies. The presented application-specific customisation focuses on charge-balanced biphasic waveforms delivered to a bipolar electrode configuration, although the hardware is capable of interfacing with other electrod...

Design, simulation and optimal selection of cosine-linear frequency modulation waveform (CNLFM) based on correlated ambiguity function (AF) method for the purpose of Synthetic Aperture Radar (SAR) is done in this article. The selected optimum CNLFM waveform in contribution with other waveforms are applied directly into a SAR image formation algorithm (IFA) and their quality effects performance ...

Examples of enantioselective catalysts, including homogeneous supported catalysts and biphasic liquid/liquid, are described and compared. In the case of asymmetric hydride transfer, polythiourea was proven to be more efficient for ruthenium-catalyzed reduction of aryl ketones, although the iridium complexes gave rise to higher ee when using amino sulfonamide bound to a polystyrene matrix. In th...

To improve the quality of prosthetic vision, it is important to understand how retinal neurons respond to electric stimulation. Previous studies present conflicting reports as to the maximum rate at which retinal ganglion cells can "follow" pulse trains, i.e., generate one spike for each pulse of the train. In the present study, we measured the response of 5 different types of rabbit retinal ga...