Center for Frontiers of Subsurface Energy Security (CFSES)

Director

Larry Lake

Lead Institution

University of Texas at Austin

Year Established

2009

Mission

To understand and control emergent behavior arising from coupled physics and chemistry in heterogeneous geomaterials, particularly during the years-to- decades time scales over which injection for geologic CO₂ storage will drive natural systems far-from-equilibrium.

Research Topics

carbon sequestration

Materials Studied

Materials: None

Interfaces: None

Nanostructured Materials: None

Experimental and Theoretical Methods

surface science, continuum modeling, finite element method

Partner Institutions

Sandia National Laboratories
University of Texas at Austin

BES Staff Contact

P. Thiyagarajan (Thiyaga)

Quick Facts

Grand Challenges Addressed

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Challenge #3

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Challenge #5

Transformative Opportunities Addressed

Trans. Opp. #2

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BES Reports Addressed

Highlights

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Applying a voltage to lanthanum strontium manganite (LSMO) can cause it to separate into distinct regions with dramatically different magnetic properties, as illustrated by the red and blue colors in the above figure.

Tuning Magnetism With Voltage Opens a New Path to Neuromorphic Circuits

Experiments show that applied voltage can dramatically alter the magnetic properties of quantum materials.

A metallic line atop a medium biased at the edge of chaos can provide effective negative resistance for time-varying signals, outputting a larger signal compared to its input. The energy for amplification comes from the static bias applied to the medium.

The “Edge of Chaos” Amplifies Signals Without Transistors

Emulating the edge of chaos of axons enables a metal wire to overcome its resistance without cooling, thereby amplifying signals flowing inside of it.