Results 51 to 60 of about 1,772,724 (258)

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska   +5 more
wiley   +1 more source

Resonant tunnelling optoelectronic circuits [PDF]

open access: yes, 2012
We introduce and report recent developments on a novel five port optoelectronic voltage controlled oscillato r consisting of a resonant tunneling diode (RTD) optical-waveguide integrated with a laser diode.
Romeira, Bruno, Figueiredo, J. M. L.
core   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han   +5 more
wiley   +1 more source

Controlled Synthesis of Cs2NaYF6: Tb Nanoparticles for High-Resolution X-Ray Imaging and Molecular Detection

open access: yesNanomaterials
Rare-earth-doped fluoride nanoparticles (NPs), known for their tunable luminescence and high chemical stability, hold significant potential for applications in X-ray imaging and radiation dose monitoring.
Jian Zhao   +4 more
doaj   +1 more source

Overstepping the upper refractive index limit to form ultra-narrow photonic nanojets

open access: yesScientific Reports, 2017
In general, photonic nanojets (PNJs) occur only when the refractive index (Ri) difference between the microparticle and background media is less than 2.
Guoqiang Gu   +5 more
doaj   +1 more source

Four-Photon Absorption Properties of Mn-Doped ZnSe Quantum Dots

open access: yesIEEE Photonics Journal, 2019
A multiphoton absorption is one of the main nonlinear optical characteristics of semiconductor quantum dots (QDs). In this paper, we report on four-photon absorption of ZnSe:Mn QDs.
Sheng Ren   +9 more
doaj   +1 more source

Highly Sensitive Surface Plasmon Resonance Humidity Sensor Based on a Polyvinyl-Alcohol-Coated Polymer Optical Fiber

open access: yesBiosensors, 2021
A surface-plasmon-resonance-based fiber device is proposed for highly sensitive relative humidity (RH) sensing and human breath monitoring. The device is fabricated by using a polyvinyl alcohol (PVA) film and gold coating on the flat surface of a side ...
Ying Wang   +4 more
doaj   +1 more source

The effect of subwavelength guidance on mode propagation and dispersion in high index optical waveguides

open access: yes, 2010
We investigate the effect of strong guidance in optical fibres with subwavelength core sizes and high index contrasts. We show that the reason results obtained via scalar modelling differ from those obtained vectorially is due to the effect of the ...
Munasinghe, H.   +2 more
core   +1 more source

Optoelectronic Materials, Devices, and Applications

open access: yes, 2023
This Special Issue entitled “Optoelectronic Materials, Devices, and Applications” is devoted to gathering a broad array of research papers on the latest advances in the development of optoelectronic materials and devices of semiconductors ...
Hua Bai   +4 more
core   +1 more source

Multimode Oxide‐Based Optoelectronic Memtransistor for In‐Sensor Vision Processing

open access: yesAdvanced Functional Materials, EarlyView.
A multimode optoelectronic memtransistor (OEMT) is demonstrated for vision explainable artificial intelligence (VXAI) hardware. By integrating optical sensing, electrical masking, and non‐volatile memory, the device enables key operations required for generating saliency information.
Min Gu Lee   +10 more
wiley   +1 more source

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