A finite element boundary integral formulation for radiation and scattering by cavity antennas using tetrahedral elements [PDF]
A hybrid finite element boundary integral formulation is developed using tetrahedral and/or triangular elements for discretizing the cavity and/or aperture of microstrip antenna arrays.
Chatterjee, A. +3 more
core +1 more source
Advanced Functional Materials, EarlyView.Auxeticity‑by‑Assembly converts freeform photovoltaics from cut‑defined layouts to assembly‑defined systems. Standardized interlocking units generate negative‑Poisson‑ratio, reconfigurable architectures, while hinge regions are wired by selectively activatable AgNW–GO@EGaIn composite interconnects and a folding‑enabled interconnector layer. A decimeter‑
Seok Joon Hwang +15 more
wiley +1 more source
Stress-Strain State of Brick Masonry Vault with an Aperture
MATEC Web of Conferences, 2016 A study of the mechanical behavior of brick masonry vaults with cut aperture is presented. The vault in New Holland complex in St. Petersburg was assumed as an illustrative example.
Bespalov Vladimir +2 more
doaj +1 more source
Implementation of free-space Fourier Ptychography with near maximum system numerical aperture. [PDF]
Opt Express, 2022 Liang M, Yang C.
europepmc +1 more source
A numerical method for approximating antenna surfaces defined by discrete surface points [PDF]
A simple numerical method for the quadratic approximation of a discretely defined reflector surface is described. The numerical method was applied to interpolate the surface normal of a parabolic reflector surface from a grid of nine closest surface ...
Acosta, R., Lee, R. Q.
core +1 more source
Metachromatic Butterfly Bile Pigments for Multi‐Level Optical Security Films
Advanced Functional Materials, EarlyView.Bio‐derived optical security materials are manufactured by embedding butterfly‐based pigments in polymer films. Tunable color and fluorescence responses arise from concentration‐controlled metachromasy, enabling spatially encoded patterns with distinct visible, UV‐active, and spectral signatures.
Limin Wang, Bodo D. Wilts
wiley +1 more source
High-performance achromatic flat lens with high NA
Light: Science & ApplicationsA new strategy has been presented to overcome the long-term dilemma of simultaneously achieving high numerical aperture, large aperture size, and broadband achromatism of flat lenses. A stepwise phase dispersion compensation (SPDC) layer is introduced as
Yifeng Shao, Paul Urbach
doaj +1 more source
High numerical aperture imaging allows chirality measurement in individual collagen fibrils using polarization second harmonic generation microscopy. [PDF]
Nanophotonics, 2023 Harvey M +5 more
europepmc +1 more source
Mechanical and Electrical Phenotype of hiPSC‐Cardiomyocytes on Fibronectin‐Based Hydrogels
Advanced Healthcare Materials, EarlyView.We introduce fibronectin‐based PEG hydrogels with controlled rigidity to enable the culture of iPSC‐derived cardiomyocytes. These substrates offer an alternative to the current culture of these cells on fibronectin‐coated glass, providing enhanced structural and functional behavior. The system provides a more physiologically relevant platform to assess
Ana Da Silva Costa +8 more
wiley +1 more source
Stress Component Decoupling Analysis Based on Large Numerical Aperture Objective Lens, an Impractical Approach. [PDF]
Materials (Basel), 2022 Chang Y, Fu D, Sun M, He S, Qiu W.
europepmc +1 more source