Results 51 to 60 of about 17,862 (290)

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

Exploring crystallographic texture manipulation in stainless steels via laser powder bed fusion: insights from neutron diffraction and machine learning

Virtual and Physical Prototyping
Laser powder bed fusion of metals (PBF-LB/M) is a pivotal additive manufacturing technique that enables the production of intricate components.
Christos Sofras, Jan Čapek, Christian Leinenbach, Roland E. Logé, Markus Strobl, Efthymios Polatidis   +5 more
doaj   +1 more source

Advanced Neutron Imaging and Sensing

, 2006
Up-to-date techniques of neutron-optical imaging and sensing are dis- cussed from the theoretical and experimental point of view, with emphasis on the statistically correct data handling.
J. PERINA, Jan Peřina, Jaroslav Řeháček, Zdenek Hradil, Saverio Pascazio, Michael Zawisky, Zawisky M., PASCAZIO, Saverio, Rehacek J, Pekina J, Z. HRADIL, M. ZAWISKY, Hradil Z, FACCHI, PAOLO, J. REHACEK, Paolo Facchi   +15 more
core   +1 more source

Displacive In‐Plane Ferroelectricity with Domain‐Specific Curie Temperature in Van der Waals Semiconductors

Advanced Science, EarlyView.
Temperature‐dependent electron diffraction on tin monochalcogenides demonstrates a gradual displacive transformation between ferroelectric and paraelectric phases with significant variability in lattice constants and Curie temperature (TC). Periodic variations exist even between domains in individual crystals, implying a domain‐specific Curie ...
Peter Sutter, Eli Sutter
wiley   +1 more source

Influence of laser powder bed fusion scanning pattern on residual stress and microstructure of alloy 718

Materials & Design, 2022
A comprehensive investigation is undertaken on the effect of laser scanning pattern on the microstructure of cylindrical samples made of Alloy 718 processed by Laser Powder Bed Fusion.
J. Čapek, E. Polatidis, N. Casati, R. Pederson, C. Lyphout, M. Strobl   +5 more
doaj   +1 more source

Imaging with polarized neutrons [PDF]

New Journal of Physics, 2009
While polarized neutrons have long proved to be an outstanding tool for the investigation of magnetic structures by scattering, we report on their potential for real space investigations of magnetic fields on a macroscopic scale by neutron imaging. Due to the ability of neutrons to penetrate thick layers of matter and their high sensitivity to magnetic
M. Strobl, N. Kardjilov, A. Hilger, E. Jericha, G. Badurek, I. Manke   +5 more
openaire   +1 more source

Phase contrast imaging with a laboratory-based microfocus X-ray source [PDF]

, 2007
This project looks at the design of an in-line X-ray phase contrast imaging system, based around the Bede Microsource®, on a suitable scale for imaging small pathological samples. The system is applied to two test objects to assess feasibility of its use
Kelly, Kathryn L, Kelly, Kathryn L.
core  

Spatial Engineering of Gas Diffusion Layers Overcomes Mass Transport Limitations in Fuel Cells

Advanced Science, EarlyView.
ABSTRACT Mass transport limitations at high current densities hinder polymer electrolyte fuel cell (PEFC) performance due to inefficient water management and reactant distribution. Gas diffusion layer (GDL) perforation offers a potential solution as an alternative to complex flow‐field modifications.
Shangwei Zhou, Wenjia Du, Jianuo Chen, Yunsong Wu, Bochen Li, Jieyang Li, Linlin Xu, Winfried Kockelmann, Meng Lin, Marc‐Olivier Coppens, Paul R Shearing, Rhodri Jervis, Thomas S. Miller   +12 more
wiley   +1 more source

Connection between f-electron correlations and magnetic excitations in UTe2

npj Quantum Materials
The detailed anisotropic dispersion of the low-temperature, low-energy magnetic excitations of the candidate spin-triplet superconductor UTe2 is revealed using inelastic neutron scattering. The magnetic excitations emerge from the Brillouin zone boundary
Thomas Halloran, Peter Czajka, Gicela Saucedo Salas, Corey E. Frank, Chang-Jong Kang, J. A. Rodriguez-Rivera, Jakob Lass, Daniel G. Mazzone, Marc Janoschek, Gabriel Kotliar, Nicholas P. Butch   +10 more
doaj   +1 more source

FNIT: the fast neutron imaging telescope for SNM detection

, 2006
We report on recent progress in the development of the Fast Neutron Imaging Telescope (FNIT), a detector with both imaging and energy measurement capabilities, sensitive to neutrons in the 2-20 MeV range.
James M. Ryan, Paul J. Bruillard, Bruillard, Paul J., Bravar, Ulisse, Bravar, U, Macri, John R., John R. Macri, Ryan, James, Macri, John R, McConnell, Mark L, Ulisse Bravar, Moser, M R, Michael R. Moser, Moser, Michael, Bruillard, P J, McConnell, Mark L., Flückiger, Erwin, Ryan, James M., Mark L. McConnell, Erwin O. Flückiger, Fluckiger, E O   +20 more
core   +1 more source