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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Predicting Prostate Cancer Directly from Tissue Images using Deep Learning on Mass Spectrometry Imaging and Whole Slide Imaging Data
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Island Sliding Barriers: A first-principles metric for determining remote epitaxy viability
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One-Dimensional Lateral Force Anisotropy at the Atomic Scale in Sliding Single Molecules on a Surface
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Sliding dynamics of skyrmion molecular crystals
Using both atomistic and particle-based simulations, we investigate the current-driven dynamics of skyrmions on two-dimensional periodic substrates when there are multiple skyrmions per substrate minimum. At zero drive, the system forms pinned skyrmion molecular crystal states consisting of dimers, trimers, or dimer-trimer mixtures that have both positional and orientational order. On a square substrate lattice, the motion above depinning occurs via a running soliton that travels completely transverse to the applied current. This motion is generated by a torque from the Magnus force, which rotates the n-mer states perpendicular to the applied current. At higher drives, the flow becomes disordered while the Hall angle diminishes and gradually approaches the intrinsic value. In some cases, we also find directional locking where the Hall angle becomes locked to certain symmetry directions of the substrate over a range of currents. The transitions into and out of directionally locked states are accompanied by negative differential mobility in which the net velocity decreases as the drive increases. In conclusion, on a triangular substrate, we find no transverse mobility effects, but still observe directionally locked motion.
Tuning of friction noise by accessing the rolling-sliding option
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The Sliding Scale of Cybersecurity Applied to the Cybersecurity Analysis of Advanced Reactors
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The links below lead to detailed listings of the many facets of the conference, including Portable Acrobat Format (PDF) files of all invited and contributed papers, together with slides from oral presentations and PDFs from poster sessions.
IPAC’23 was jointly organised by Istituto Nazionale di Fisica Nucleare and Elettra Sincrotrone Trieste in Venice, Italy from 7 to 12 May 2023 at the Venice Convention Centre.
Deterministic Quantum Emission in an Epitaxial 2D Material [Slides]
Abstract not provided.
Optical Photon Transport in Scintillator Detector Simulations with DRiFT [Slides]
Radiation detection systems are a central pillar of NNSA’s nuclear security, nonproliferation, and stockpile stewardship mission. Radiation transport simulations are a prevalent tool in radiation detection R&D.
Preparing a Safety Data Sheet (SDS) for Research Products [Slides]
We will cover: Regulations, SDS requirements, Hazard determination, Precautionary statements/pictograms (labels), and other considerations.
Experimental capabilities with neutron beams at LANSCE. Short pulse spallation neutron sources [Slides]
Los Alamos National Laboratory (LANL) is the location of the Los Alamos Neutron Science Center (LANSCE). The presentation outlines the various components and capabilities at LANSCE.
DRACO and Nonequilibrium Statistical Mechanics of Aging [Slides]
Topics covered include: Types of problems which DRACO (Multiphysics simulation) was designed to address; Tools from nonequilibrium statistical mechanics; Rare events (Extreme value statistics); Transients (Diverging time scales); and, Thresholds (Absorbing phase transitions).
GCD: Current Performance / Issues [Slides]
LANL purchased a man instrument (pulse dilation PMT) from the Sydor Instruments, Inc. The company requests to get experimental data obtained using the instrument, for their record.