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Modular multilevel converters (MMC) are emerging to be an alternative approach for realizing power converters for a variety of high power applications because they allow series-cascaded levels and/or parallel-connected branches. However, the design of communication interface between system controller and individual modules became increasingly complicated as more modules been added into the system,...
We demonstrate an approach to build a selector into ReRAM (memristors) using engineered materials. In this approach, a segment(s) of “nonlinear material” is self-assembled into the conduction channel (s) (filament) of a memristor. The nonlinear material exhibits a highly nonlinear current-voltage characteristic, which gives rise to a nonlinear i-v characteristic of the memristor in the ON state.
Wireless power transfer is an essential technology to increase implants’ longevity. A pair of inductivelycoupled coils operating at radio-frequency is extensively used to deliver electrical power to implants wirelessly. In this system, a power conditioning circuit is required convert the induced time-varying AC power harvested by the receiving coil to a stable DC power that is needed for powering...
Modular multilevel converters (MMC) are emerging to be a viable approach for realizing large-scale power conversions reach up to several hundreds of MW, particularly for applications at the utility scale. Their topological structure offers a versatile approach for using virtually identical building blocks to realize arbitrary functions, voltage, and current levels. It is therefore a suitable platform...
Our group focuses on developing better nanoscale memristor with improved performance, understanding the underlying device physics, and exploring new applications for this novel device. This paper introduces our recent work on memristor device engineering and CMOS integration. We have fabricated the smallest memristors (8 nm × 8 nm) in a crossbar array, with each of the device consumes orders of magnitude...
Providing electrical power to an implantable microelectronic device (IMD) via wireless power transfer technology is critical to implant's efficacy. The inductive coupling based wireless power transfer technology has been the primary approach to remotely power an IMD [1]. Reducing the coil size and improving efficiency are the two primary design goals for the power harvesting component in an IMD. A...
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