Results 221 to 230 of about 86,271 (275)

Transceiver 16‐Channel Coaxial‐End Dipole Array for Combined Head and C‐Spine MRI at 9.4 T

open access: yesNMR in Biomedicine, Volume 39, Issue 3, March 2026.
A double‐row transceiver array consisting of 16 folded‐end coaxial‐end dipoles was designed. Curved dipole elements were aligned on a tight‐fitting, ergonomically shaped holder optimized for subject comfort. Transmit efficiency, B1+ field homogeneity, and SAR were numerically evaluated using EM‐simulations and optimized with respect to several ...
G. A. Solomakha   +11 more
wiley   +1 more source

Numerical Investigation of Laser Path on Residual Stresses in the Laser Powder Bed Fusion Process

open access: yesPAMM, Volume 26, Issue 1, March 2026.
ABSTRACT Residual stress development in laser powder bed fusion (LPBF) manufacturing significantly affects part quality and dimensional accuracy. However, the influence of laser scanning strategies on thermal evolution and stress formation remains poorly understood for multi‐layer processing. An extended finite difference method framework was developed
Alfred Jose Puthoor   +1 more
wiley   +1 more source

Balancing Sustainability and Performance: Bio‐Based Epoxy Systems for Durable Flax Fiber‐Reinforced Composites

open access: yesPolymer Composites, Volume 47, Issue 4, Page 3154-3172, 20 February 2026.
Bio‐based epoxy systems enabling sustainable, durable, and high‐performance flax fiber composites. ABSTRACT Three bio‐based epoxy systems—Polar Bear, Green Turtle, and Plankton—featuring bio‐carbon contents of 28% to 70%, were combined with recyclable (Recyclamine R101) and non‐recyclable hardeners to produce flax fiber‐reinforced biocomposites.
Vincenzo Fiore   +6 more
wiley   +1 more source

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

open access: yesAdvanced Engineering Materials, Volume 28, Issue 3, 4 February 2026.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan   +4 more
wiley   +1 more source

Characterization of Complex Stacking of Semiconductors Through Near Field Imaging and Spectroscopy

open access: yesAdvanced Materials, Volume 38, Issue 7, 2 February 2026.
SNOM imaging and spectroscopy on a mechanically cleaved facet is used to characterize the different layers of complex epitaxial heterostructures composed of a type II superlattice and highly doped semiconductors. Both the geometrical parameters of the stack and the optical properties of the individual layers and of the interfaces are retrieved, as well
Laure Tailpied   +8 more
wiley   +1 more source

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