Results 41 to 50 of about 3,116 (232)
Microscale 3D‐Printed Digital Strain Switches for Embedded Mechanical Computation
Advanced Materials Technologies, EarlyView.Microscale 3D‐printed strain switches on flexible films convert deformation into native digital signals at geometry defined thresholds. A closed form model predicts switching from 3000 to 15 000 microstrain and is validated across 110 devices. Reliable ohmic closure and strain activated AND, OR, and XOR logic point toward low‐power mechanical ...
Regan Kubicek +3 more
wiley +1 more source
Structure-Modulated Long-Period Fiber Gratings: A Review
PhotonicsStructure-Modulated Long-Period Fiber Gratings (SM-LPFGs) represent an advancement in fiber optic sensor technology, moving beyond traditional photosensitivity-based fabrication to achieve enhanced performance through the direct physical modification of ...
Tianyu Du +4 more
doaj +1 more source
A Simple Spectral Interrogation System for Optical Fiber Sensors
Proceedings, 2019 Optical fiber sensors (OFS) based on long-period fiber gratings (LPFG) or on surface plasmon resonance (SPR) represent attractive solutions for detection systems in remote areas.
Paulo S. S. dos Santos +3 more
doaj +1 more source
Long-Period Fiber Gratings Coated with Poly(ethylene glycol) as Relative Humidity Sensors
U.Porto Journal of Engineering, 2022 Relative humidity is an important parameter in controlled environments and is typically monitored using low-cost electrochemical sensors with low resolution and accuracy.
Bernardo Dias +2 more
doaj +1 more source
Large‐Area Flat Optics Color Routing in Tilted Arrays of 2D Semiconductor Nanostripes
Advanced Optical Materials, EarlyView.We develop a scalable flat optics platform exploiting self‐organised ion‐beam sputtering and maskless glancing‐angle deposition to fabricate centimetre‐scale arrays of tilted MoS2 nanostripes. The engineered geometry activates Rayleigh anomalies, guided modes, and Mie resonances, enabling highly directional color routing and enhanced light harvesting ...
Simone Di Marco +7 more
wiley +1 more source
Strong long-period fiber gratings recorded at 352?nm [PDF]
Optics Letters, 2005 We describe long-period grating inscription in hydrogenated telecom fibers by use of high-intensity femtosecond 352 nm laser pulses. We show that this technique allows us to fabricate high-quality 30 dB gratings of 300 microm period and 2 cm length by use of a three-photon absorption mechanism.
Dubov, Mykhaylo +3 more
openaire +3 more sources
Advanced Optical Materials, EarlyView.Here we use a template‐assisted self‐assembly approach of metal colloids onto metal films to produce hybrid plasmonic metasurfaces that integrate nanoparticle‐on‐mirror cavities with periodic metal colloid arrays. The resulting coupling between gap plasmons and grating‐coupled surface plasmon polaritons enables programmable hybrid modes with tailored ...
Afroditi Koutsogianni +6 more
wiley +1 more source
Mechanically Induced Long-Period Fiber Gratings and Applications
PhotonicsLong-period fiber gratings (LPFGs) functioning as band-reject filters have played a pivotal role in the realm of optical communication. Since their initial documentation in 1996, LPFGs have witnessed rapid advancements in areas such as optical sensing ...
Jiaqi Ran +7 more
doaj +1 more source
Grating Inscription Into Fluoride Fibers: A Review
IEEE Photonics Journal, 2019 First demonstrated over four decades ago, fiber gratings, and in particular fiber Bragg gratings (FBGs), have become indispensable and ubiquitous components within fiber laser cavities as well as optical communication networks and sensor systems. Because
Alexander Fuerbach +2 more
doaj +1 more source
Sensors, 2023 In order to complete this set of three companion papers, in this last, we focus our attention on environmental monitoring by taking advantage of photonic technologies.
Giovanni Breglio +30 more
doaj +1 more source