Results 111 to 120 of about 71,835 (281)

Demonstration of 3D‐Printed Optical Antennas for High‐Speed Optical Wireless Communication Using Market‐Ready Materials

open access: yesAdvanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.
The feasibility of 3D‐printed optical antennas using commercial, non‐optical materials for Optical Wireless Communications (OWC) is demonstrated. This study combines spectral analysis, anisotropy effects, and telecom‐relevant optical measurements, revealing promising performance and novel insights for low‐cost, customizable photonic components in ...
Mauro Aresti   +6 more
wiley   +1 more source

Quadrature Based Neural Network Learning of Stochastic Hamiltonian Systems

open access: yesMathematics
Hamiltonian Neural Networks (HNNs) provide structure-preserving learning of Hamiltonian systems. In this paper, we extend HNNs to structure-preserving inversion of stochastic Hamiltonian systems (SHSs) from observational data.
Xupeng Cheng, Lijin Wang, Yanzhao Cao
doaj   +1 more source

Collocation and Galerkin Time-Stepping Methods [PDF]

open access: yes
We study the numerical solutions of ordinary differential equations by one-step methods where the solution at tn is known and that at t(sub n+1) is to be calculated.
Huynh, H. T.
core   +1 more source

On computing rational Gauss-Chebyshev quadrature formulas [PDF]

open access: hybrid, 2005
Joris Van Deun   +2 more
openalex   +1 more source

Ultrasensitive Diamond Cantilever‐Based Optical Microphone

open access: yesAdvanced Science, Volume 13, Issue 3, 14 January 2026.
The first demonstration that high quality diamond cantilevers function as high‐sensitivity acoustic transducers is reported, combining CVD diamond cantilevers and an extrinsic Fabry‐Perot optical configuration. High transduction efficiency yields record sensitivity (51.5 VPa−1) and MDP (0.018 µPa/Hz$\rm {\sqrt {Hz}}$), enabling durable, low‐noise ...
Shen Tian   +8 more
wiley   +1 more source

Effect of Inhomogeneous Temperature in Chip‐Scale Infrared Thermal Sources: A Revisited Blackbody Radiation Formula with Experimental Validation

open access: yesAdvanced Electronic Materials, Volume 12, Issue 2, 21 January 2026.
Revisited Black‐body radiation formula accounting for nonuniform temperature is proposed for calibration of planar thermal light sources. Calibration of optical power is based on measurement of the highest and lowest temperatures. Abstract Miniature and low‐cost light sources are highly desirable for numerous optical microsystems.
Shady R. Labib   +5 more
wiley   +1 more source

Computing the matrix exponential with the double exponential formula

open access: yesSpecial Matrices
This article considers the computation of the matrix exponential eA{{\rm{e}}}^{A} with numerical quadrature. Although several quadrature-based algorithms have been proposed, they focus on (near) Hermitian matrices.
Tatsuoka Fuminori   +3 more
doaj   +1 more source

Quantum Jumps in Amplitude Bistability: Tracking a Coherent and Invertible State Localization

open access: yesAnnalen der Physik, Volume 538, Issue 1, January 2026.
A notable asymmetry is shown to characterize the bistable switching between macroscopic metastable states of light in the strong‐coupling limit of radiation–matter interaction. Transitions from the vacuum to a highly excited state correlate with a highly bunched sequence of emitted photons, while a downward switch to the vacuum involves a coherent ...
Th. K. Mavrogordatos
wiley   +1 more source

Generalized Gaussian Birkhoff Quadrature Formulas

open access: yesJournal of Approximation Theory, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On the Noisy Road to Open Quantum Dynamics: The Place of Stochastic Hamiltonians

open access: yesAnnalen der Physik, Volume 538, Issue 1, January 2026.
Stochastic Hamiltonian formulations of open quantum dynamics are revisited, highlighting their roots in stochastic calculus. The connections among stochastic Hamiltonians, stochastic Schrödinger equations, and master‐equation approaches are made explicit.
Pietro De Checchi   +3 more
wiley   +1 more source

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