University of New Mexico

5 Results

Type

Tag

Current Filters Clear all

Remove Tags filter×

Enabling fully predictive simulations using disruptive computational mechanics and novel diagnostics

News Article, April 10, 2023 • Sandia Researcher Rekha Rao Accurately capturing solidification of fluids and the development of residual stress is critical for fully predictive simulations for numerous applications in geoscience, nuclear safety, manufacturing, energy production, and bioscience. Researchers on this LDRD project developed, implemented, and demonstrated advanced constitutive models with yield stress to represent...

Imaging the visible emissions from plasmas in pulsed power experiments

News Article, March 16, 2023 • The center section of Sandia's Z Machine Low density plasmas are predicted to impact Sandia’s Z machine experiments in a variety of ways. Magnetic Resonance Tomography instability development during the target implosion can lead to broad trailing density profiles and potentially redistribute current away from the on-axis stagnation region. Low...

A technician gets a target ready for the center section in the Z machine pulsed power facility

Predicting catastrophic failure and collapse in infrastructure

News Article, March 20, 2023 • The team, led by Sandia principal investigator Jessica Rimsza, developed new modeling capabilities for evaluating multiphase phenomena in cement-based materials in energy and infrastructure applications, a chemo-mechanical model for cement fracture, identified sources of uncertainty in cement degradation and concrete fracture, and created six new capabilities for modeling brittle fracture...

Releasing, detecting, and modeling trace aerosols and gases in Earth’s stratosphere

News Article, May 1, 2023 • Proposed actions to reduce ever-increasing global temperatures include geoengineering the Earth’s climate by injecting matter into the stratosphere to reflect sunlight. This proposition, known as Solar Radiation Management, is based on global climate model studies averaged in space and time and Plinian-style volcanic eruptions observations from near-single points. By increasing...

The sun peering over the curvature of the Earth.

Wide-bandgap semiconductors benefit from development of single-photo sources in gallium nitride

News Article, June 8, 2023 • Single-photon sources based on atom-like features in solid-state materials offer the prospect for integrated, on-demand solid-state platforms and are being intensively explored for numerous mission-related quantum information technologies. Gallium nitride (GaN) is a very hard, mechanically stable wide-bandgap (WBG) semiconductor that permits devices to operate at much higher voltages, frequencies,...