Pixel sensor integrated neuromorphic VLSI system for real-time applications

We have self-assembled regimented arrays of vertical ∼100 nm diameter Ge Esaki tunnel diodes using nanosphere lithography. Measurements of the current-voltage characteristics of individual nanodiodes using conductive atomic force microscopy at room temperature reveal pronounced negative differential resistance under forward bias, with a peak to valley ratio of 2–4. These diode arrays could constitute a neuromorphic circuit architecture exhibiting collective computational activity.

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Self-assembled ordered arrays of nanoscale germanium Esaki tunnel diodes

Zhu

Shao

et al. 2011

Applied Physics Letters

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ASIC Implementation of a Nonlinear Dynamical Model for Hippocampal Prosthesis

Yan

Han

et al. 2018

Neural Computation

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A hippocampal prosthesis is a very large scale integration (VLSI) biochip that needs to be implanted in the biological brain to solve a cognitive dysfunction. In this letter, we propose a novel low-complexity, small-area, and low-power programmable hippocampal neural network application-specific integrated circuit (ASIC) for a hippocampal prosthesis. It is based on the nonlinear dynamical model of the hippocampus: namely multi-input, multi-output (MIMO)-generalized Laguerre-Volterra model (GLVM). It can realize the real-time prediction of hippocampal neural activity. New hardware architecture, a storage space configuration scheme, low-power convolution, and gaussian random number generator modules are proposed. The ASIC is fabricated in 40 nm technology with a core area of 0.122 mm[Formula: see text] and test power of 84.4 [Formula: see text]W. Compared with the design based on the traditional architecture, experimental results show that the core area of the chip is reduced by 84.94% and the core power is reduced by 24.30%.

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Pixel sensor integrated neuromorphic VLSI system for real-time applications

Cited by 2 publications

References 17 publications

Self-assembled ordered arrays of nanoscale germanium Esaki tunnel diodes

Self-assembled ordered arrays of nanoscale germanium Esaki tunnel diodes

ASIC Implementation of a Nonlinear Dynamical Model for Hippocampal Prosthesis

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