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NSCI Seminar: Novel 2D Material Based Devices for Nanoelectronic Computing

This talk will discuss recent work in developing novel electronic devices based on the emerging family of two-dimensional (2D) materials for applications in the next generation nanoelectronic computing. The work that has been done in understanding the fundamental electronic properties of emerging 2D materials that are attractive for device innovations will be presented. The main part of the talk will then focus on our work in exploring the new paradigm of device innovation enabled by the unique properties of 2D materials for ultra-low power memory and logic, as well as a new generation of hardware building block for neuromorphic electronics. The devices to be discussed will include an atomically-thin memristive device based on oxidized bilayer boron nitride that can operate at sub-pA current and sub-fJ energy per bit, which gives 1-2 orders of magnitude improvement comparing to the previous best due to the atomic scale confinement of the filament and the profoundly different ionic kinetics. A range of 2D material based artificial synaptic devices with dynamically re-configurable characteristics, including emulating the heterogeneity in synaptic connections using the anisotropic properties of black phosphorus; a tunable memristive device as a reconfigurable synapse; and a junction based device for emulating bilingual synapse will also be discussed. These devices allow reconfigurable synaptic weight profiles and response time scale that are attractive for building spiking neural network. I will conclude with remarks on our vision about the applications of 2D material based devices in future electronic computing, and how their combination of reconfigurable device functionalities, biological-level energy consumption and device/circuit simplicity are expected to benefit the next-generation electronics technologies.

Sponsors

NSCI Committee

Created August 14, 2017, Updated September 19, 2017