Results 41 to 50 of about 66,302 (314)

Dielectric Sensors Based on Electromagnetic Energy Tunneling

open access: yesSensors, 2015
We show that metallic wires embedded in narrow waveguide bends and channels demonstrate resonance behavior at specific frequencies. The electromagnetic energy at these resonances tunnels through the narrow waveguide channels with almost no propagation ...
Omar Siddiqui   +2 more
doaj   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

open access: yesAdvanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner   +14 more
wiley   +1 more source

Propagation loss in slow light photonic crystal waveguides [PDF]

open access: yes, 2012
The field of nanophotonics is a major research topic, as it offers potential solutions to important challenges, such as the creation of low power, high bandwidth interconnects or optical sensors.
Schulz, Sebastian Andreas
core  

Novel Modulation and Detection Mechanisms in Silicon Nanophotonics [PDF]

open access: yes, 2006
A number of nanophotonic integrated circuits are presented, which take advantage of the unique properties that light has when guided in very small waveguides to achieve novel functionality.
Baehr-Jones, Tom Wetteland
core   +1 more source

Supercontinuum in integrated photonics: generation, applications, challenges, and perspectives

open access: yesNanophotonics, 2023
Frequency conversion in nonlinear materials is an extremely useful solution to the generation of new optical frequencies. Often, it is the only viable solution to realize light sources highly relevant for applications in science and industry.
Brès Camille-Sophie   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

High-index contrast waveguides for microparticle guidance [PDF]

open access: yes, 2008
Design, fabrication and optimization of high refractive-index contrast Tantalum Pentoxide (Ta2O5) nanoscale waveguides are reported. The strong evanescent field in such nanoscale (150nm-250nm thick) and high-refractive index contrast (Delta.n ~ 0.65 ...
Ahluwalia, B.S.   +3 more
core  

Silicon-on-Nitride Waveguide With Ultralow Dispersion Over an Octave-Spanning Mid-Infrared Wavelength Range

open access: yesIEEE Photonics Journal, 2012
The proposed silicon-on-nitride (SON) waveguide exhibits an ultrabroadband (4200 nm), low chromatic dispersion in the mid-infrared (MIR) wavelength region from 2430 to 6630 nm. It has two zero-dispersion wavelengths within the span.
Yang Yue   +4 more
doaj   +1 more source

Velocity‐Tunable Exciton‐Photon Hybridization in Cathodoluminescence

open access: yesAdvanced Functional Materials, EarlyView.
Transition‐radiation resonances in suspended thin crystals hybridise with excitonic transitions under free‐electron excitation. By tuning the electron energy, the photonic resonances are continuously detuned across the exciton states, enabling controllable exciton–photon hybridisation below the diffraction limit without altering the system geometry ...
Sven Ebel   +4 more
wiley   +1 more source

Slow-light and evanescent modes at interfaces in photonic crystal waveguides: optimal extraction from experimental near-field measurements [PDF]

open access: yes, 2011
We develop a systematic approach for simultaneous extraction of the dispersion relations and profiles of multiple modes in periodic waveguides though a special global optimization procedure applied to near-field electric field measurements in the ...
Ha, S.   +23 more
core   +1 more source

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