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Primeur weekly 2017-07-31

Focus

ECMWF at the heart of weather and climate modelling as global challenge of societal relevance with game changing prediction capability through exascale ...

NVIDIA hits the top 10 in the TOP500 and Green500 lists with multi-tasking GPUs - NVIDIA Vice President Ian Buck explains ...

Exascale supercomputing

Oak Ridge National Laboratory acquires D-Wave 2000Q Cloud services to accelerate hybrid computing applications ...

Crowd computing

Dark ecology project will use past weather radar data to trace bird migrations ...

Quantum computing

Tiny dancer atoms could prove a hit with quantum computer scientists ...

Qubitekk licenses ORNL single-photon source approach for quantum encryption ...

Ultracold molecules hold promise for quantum computing ...

University of Sydney and Microsoft forge global quantum computing partnership ...

Focus on Europe

Prof. Jan de Boer joins Board of Directors at Netherlands eScience Center ...

Hardware

Cray to expand storage portfolio through strategic transaction and partnership with Seagate ...

Stampede2 storms out of the Corral in support of U.S. scientists ...

Nick Nystrom appointed Interim Director of PSC ...

CSIRO has chosen Dell EMC to build a new scientific computing capability, kicking off a new generation of research ...

One Stop Systems named one of San Diego's fastest growing companies ...

Applications

High risk of unprecedented rainfall in the United Kingdom simulated by Met Office supercomputer ...

NIH awards $9.3 million for further development of PHENIX structural biology software ...

Inaugural Collaborative Science Call yields six proposals melding genomics and supercomputing ...

Stampede supercomputer skyrocketed science ...

IBM combines All-Flash and storage software optimized for Hortonworks ...

PPPL researchers perform first basic-physics simulation of the impact of recycled atoms on plasma turbulence ...

Catch of the day: A net full of trees ...

Liquid electrolyte contacts for advanced characterization of resistive switching memories ...

Liquid electrolyte contacts for advanced characterization of resistive switching memories


Left: schematic of the ionic liquid experiment. Centre and right: topographic and current maps obtained with the CAFM after the ionic liquid stress. The CAFM is able to detec a single conductive spot within a circular area with a diameter of 20 micrometers. Credit: Experimental.
26 Jul 2017 Stanford - Memristors are nanosized electronic devices that can be used to fabricate next generation memories, and to build up electronic synapses for neuromorphic computing. A memristor consists on a metal-insulator-metal nanocell, in which electrical impulses are applied between the electrodes to modulate the resistivity of the insulator. In this way, a high and a low resistivity state can be intentionally and cyclically induced, which can be used to simulate the ones and zeros of the binary code. The resistivity changes are generated due to local atomic rearrangements produced by the electrical field applied, but understanding this phenomenon is very challenging because i) it takes place in very small areas, and ii) it happens at the insulating stack, which is buried in the top electrode.

The group lead by Prof. Paul C. McIntyre at Stanford University has recently developed a new methodology to observe in situ these local conductivity changes. The method consists on replacing the top electrode by a conductive liquid electrolyte, which can be polarized to stress the insulator. After the stress, the electrolyte can be rinsed and the surface of the insulator is scanned via conductive atomic force microscopy. The nanoscale studies have been carried by Prof. Mario Lanza's group, and reveal the formation of local spots with diameters below 4 nm that are responsible for the conductivity change. By tuning the conductivity of the liquid electrolyte, this method even allows distinguishing the contribution of electrical field and thermal heat into the currents generated.

This work was recently presented in the first China RRAM International Workshop, which was held at Soochow University on June 12th-14th of 2017. This event, hosted by Prof. Mario Lanza, aggregated most world leaders in the field of memristors, including Prof. Philip Wong, Stanford University; Prof. Wei Lu, Michigan University; and Prof. Tony Kenyon, University College London, among many others. The workshop is expected to hold its second edition in 2019 and become a biannual meeting for the memristors community.
Source: Lanza lab at Stanford University

Back to Table of contents

Primeur weekly 2017-07-31

Focus

ECMWF at the heart of weather and climate modelling as global challenge of societal relevance with game changing prediction capability through exascale ...

NVIDIA hits the top 10 in the TOP500 and Green500 lists with multi-tasking GPUs - NVIDIA Vice President Ian Buck explains ...

Exascale supercomputing

Oak Ridge National Laboratory acquires D-Wave 2000Q Cloud services to accelerate hybrid computing applications ...

Crowd computing

Dark ecology project will use past weather radar data to trace bird migrations ...

Quantum computing

Tiny dancer atoms could prove a hit with quantum computer scientists ...

Qubitekk licenses ORNL single-photon source approach for quantum encryption ...

Ultracold molecules hold promise for quantum computing ...

University of Sydney and Microsoft forge global quantum computing partnership ...

Focus on Europe

Prof. Jan de Boer joins Board of Directors at Netherlands eScience Center ...

Hardware

Cray to expand storage portfolio through strategic transaction and partnership with Seagate ...

Stampede2 storms out of the Corral in support of U.S. scientists ...

Nick Nystrom appointed Interim Director of PSC ...

CSIRO has chosen Dell EMC to build a new scientific computing capability, kicking off a new generation of research ...

One Stop Systems named one of San Diego's fastest growing companies ...

Applications

High risk of unprecedented rainfall in the United Kingdom simulated by Met Office supercomputer ...

NIH awards $9.3 million for further development of PHENIX structural biology software ...

Inaugural Collaborative Science Call yields six proposals melding genomics and supercomputing ...

Stampede supercomputer skyrocketed science ...

IBM combines All-Flash and storage software optimized for Hortonworks ...

PPPL researchers perform first basic-physics simulation of the impact of recycled atoms on plasma turbulence ...

Catch of the day: A net full of trees ...

Liquid electrolyte contacts for advanced characterization of resistive switching memories ...