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Alexandre Schmid

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Related publications (158)

A pulse-density modulation circuit exhibiting noise shaping with single-electron neurons

Alexandre Schmid, Yusuf Leblebici

2009

Optimization of Nanoelectronic Systems Reliability under Massive Defect Density Using Distributed R-Fold Modular Redundancy

Alexandre Schmid, Yusuf Leblebici, Milos Stanisavljevic

The theoretical analysis of R-fold modular redundancy with distributed voters - distributed R-fold modular redundancy in terms of reliability is presented for the first time to the best of author's knowledge. This technique is compared in terms of resistan ...

IEEE Computer Soc Press, Customer Service Center, Po Box 3014, 10662 Los Vaqueros Circle, Los Alamitos, Ca 90720-1264 Usa2009

Embedded non–volatile memory study with surface potential based model

Alexandre Schmid, Yusuf Leblebici, Davide Garetto

Coupling coefficients calculation is known to be a critical issue in embedded Non-Volatile Memory (eNVM) compact modeling. In this paper we have implemented the charge balance method within the Brew’s Charge Sheet Model equation, determining the floating g ...

2009

Optimization of the Averaging Reliability Technique using Low Redundancy Factors for Nanoscale Technologies

Alexandre Schmid, Yusuf Leblebici, Milos Stanisavljevic

This paper presents a method enabling the evaluation of the averaging fault-tolerant technique, using the output probability density functions (PDFs) of unreliable units which are acquired from Monte Carlo simulations. The method has been verified by compa ...

2009

A Micropower Neural Recording Amplifier with Improved Noise Efficiency Factor

Alexandre Schmid, Yusuf Leblebici, Vahid Majidzadeh Bafar

This article presents a neural recording amplifier suitable for large-scale integration with multi-electrode arrays (MEAs) in very low-power microelectronic cortical implants. The proposed amplifier is the most energy-efficient structure reported to date, ...

2009

A Fully On-Chip LDO Voltage Regulator for Remotely Powered Cortical Implants

Alexandre Schmid, Yusuf Leblebici, Vahid Majidzadeh Bafar

This article presents a fully on-chip low-power low drop-out (LDO) voltage regulator dedicated to remotely powered wireless cortical implants. This regulator is stable over the full range of alternating current without the need of dedicated active circuitr ...

2009

Matrice de micro électrodes à haute résolution spatiale pour la mesure du potentiel extracellulaire des cellules nerveuses

Alexandre Schmid, Yusuf Leblebici, Neil Joye

Une nouvelle approche basée sur des électrodes en 3D a été développée afin d’accroître le couplage électrique entre les cellules nerveuses et les capteurs d’une matrice de micro électrodes (MEA). Cette amélioration du couplage électrique obtenue par des ma ...

2009

Electrical modeling of the cell-electrode interface for recording neural activity from high-density microelectrode arrays

Alexandre Schmid, Yusuf Leblebici, Neil Joye

Accurate electrical models are needed to support the design of modern microelectrode arrays. The point-contact model is presented thoroughly, and an area-contact model is analytically derived in order to model the electrical characteristics of the cell-ele ...

2009

Fault-Tolerance and Reliability of Post-CMOS Systems: a Circuit Perspective

Alexandre Schmid, Yusuf Leblebici, Milos Stanisavljevic

The reliability of systems made of unreliable nanoelectronic devices is discussed in this paper. Massive defect density which may affect future fabrication technologies calls for novel solutions, where spatial redundancy and the voting scheme play a signif ...

IEEE Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Fault-tolerant architectures for nanoelectronic circuits employing simple feed-forward neural networks without learning

Alexandre Schmid, Yusuf Leblebici

2008

Three-Dimensional Silicon-based MEA with High Spatial Resolution

Alexandre Schmid, Yusuf Leblebici, Neil Joye

A new approach based on three-dimensional tip electrodes has been developed as a way to increase the electrical oupling between the neural cells and the individual sensors in a microelectrode array (MEA). With respect to standard planar electrodes, the ele ...

2008

Optimization of nanoelectronic systems' reliability under massive defect density using Cascaded R-fold modular redundancy

Alexandre Schmid, Yusuf Leblebici, Milos Stanisavljevic

The theoretical analysis of R-fold modular redundancy, cascaded R-fold modular redundancy and NAND multiplexing is presented and these fault-tolerant techniques are compared in terms of resistance to massive levels of defect density. Optimal cluster size a ...

2008

Implementation of early vision model for edge extraction with single-electron devices

Alexandre Schmid, Yusuf Leblebici

2008

Three-dimensional Tip Electrode Array Technology for High Resolution Neuro-Electronic System used in Electrophysiological Experiments in-vitro

Alexandre Schmid, Yusuf Leblebici, Neil Joye, Maurizio Lavagnino

A three-dimensional tip electrode array technology for in- vitro electrophysiological experiments is presented. Based on simulation results obtained with a finite element model of the neuron-electrode interface, it has been shown that the electrical coupli ...

2008

Novel Front-End Circuit Architectures for Integrated Bio-Electronic Interfaces

Alexandre Schmid, Yusuf Leblebici, Carlotta Guiducci

2008

CMOS realization of two-dimensional mixed analog-digital Hamming distance discriminator circuits for real-time imaging applications

Alexandre Schmid, Yusuf Leblebici, Stéphane Badel

The architecture of an integrated Hamming artificial neural network, and its use as a versatile signal/image processing circuit is presented. The circuit operation relies oil the charge-based processing of sum-of-products terms, complemented with digital p ...

2008

Toward a single-electron image processor for edge detection based on the inner retina model

Alexandre Schmid, Yusuf Leblebici

2008

An Electrical Model of the Cell-Electrode Interface for High-density Microelectrode Arrays

Alexandre Schmid, Yusuf Leblebici, Neil Joye

A point-contact model is presented, and an areacontact model has been analytically derived in order to model the electrical characteristic of the cell-electrode interface of high-density neuron cultures. The area-contact model is presented as a model more ...

IEEE2008

A Bio-Inspired Image Processor for Edge Detection with Single-Electron Circuits

Alexandre Schmid, Yusuf Leblebici

2007

Fault-Tolerant Logic Gates Using Neuromorphic CMOS Circuits

Alexandre Schmid, Yusuf Leblebici, Neil Joye

Fault-tolerant design methods for VLSI circuits, which have traditionally been addressed at system level, will not be adequate for future very-deep submicron CMOS devices where serious degradation of reliability is expected. Therefore, a new design approac ...

IEEE2007

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