Results 131 to 140 of about 271,940 (302)

On‐Chip Sensing with Slow Light Topological Cavities

open access: yesAdvanced Optical Materials, EarlyView.
A valley photonic crystal slow‐light sensor is demonstrated with up to 1.76‐fold shorter round‐trip path lengths than non‐slow‐light designs. The stronger light‐matter interactions in the slow‐light cavity sensor result in up to threefold higher sensitivity compared to the non‐slow‐light cavity sensor.
Bodhan Chakraborty   +4 more
wiley   +1 more source

Advanced Emissivity Tuning Via Femtosecond Laser Surface Engineering

open access: yesAdvanced Optical Materials, EarlyView.
Femtosecond laser surface processing (FLSP) is employed to fabricate titanium‐based metamaterials with engineered micro/nano‐scale features that exhibit spectrally selective and omnidirectional thermal emissivity. By integrating advanced ellipsometry, electromagnetic modeling, and compositional analysis, the work reveals resonance‐driven emissivity ...
Zahra Kamali Khanghah   +8 more
wiley   +1 more source

Topological Valley Photonic Waveguides: Scattering Matrix Evaluation for Linear Computing

open access: yesAdvanced Photonics Research, EarlyView.
This research is focused on the design of a 6‐port junction via valley photonic crystal waveguides to achieve equal power splitting of an incident signal towards three other ports. An in‐depth study is carried out to extract its corresponding scattering matrix.
Christian Johnson-Richards   +2 more
wiley   +1 more source

Non‐Hermitian Topological Lattice Photonics: An Analytic Perspective

open access: yesAdvanced Photonics Research, EarlyView.
This review establishes exact analytical solutions for non‐Hermitian Hatano–Nelson, Su–Schrieffer–Heeger, and generalized Rice–Mele models. We demonstrate non‐Hermitian skin effects via point‐gap topology, hybrid skin‐topological edge states in 2D lattices, and spin‐polarized boundary modes governed by dual bulk‐boundary correspondence.
Shihua Chen   +6 more
wiley   +1 more source

Impact of System‐Model Mismatch in Fourier Ptychographic Microscopy

open access: yesAdvanced Photonics Research, EarlyView.
This study investigates the robustness of Fourier ptychography microscope (FPM) reconstruction algorithms across various scenarios, each representing challenges encountered in practical FPM experiments, and deduces the extent to which FPM can provide diffraction‐limited resolution under the influence of various sources of error.
Tuo Yin   +4 more
wiley   +1 more source

Hydrocephalic cerebrospinal fluid flowing rotationally with pulsatile boundaries: A mathematical simulation of the thermodynamical approach

open access: gold, 2022
Hemalatha Balasundaram   +4 more
openalex   +1 more source

A Low‐Cost Curvature Detection Method for an Untethered Biped Pipeline Climbing Robot with Energy‐Efficient Strategy

open access: yesAdvanced Robotics Research, EarlyView.
A low‐cost pipeline curvature detection method has been proposed for an untethered biped pipeline surface climbing robot (BPCR) system with a five‐degree‐of freedom structure. The BPCR features adaptive vacuum suction cups equipped with multiple laser sensors on the suction modules to detect the curvature of various surfaces.
Zikang Li   +3 more
wiley   +1 more source

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