Results 71 to 80 of about 6,910,807 (299)

In Situ Integrated Titanium Oxide Synaptic Phototransistor Enabling Multimodal Plasticity and Noise‐Robust Selective Attention

open access: yesAdvanced Materials Technologies, EarlyView.
An in situ integrated TiO2/SiOx/Al2O3 synaptic phototransistor couples ultraviolet and electrical stimuli within a scalable, CMOS‐compatible oxide stack. Multimodal plasticity, spike‐timing‐dependent learning, and bee‐inspired associative conditioning are achieved through trap‐mediated temporal dynamics.
Youngbin Yoon   +5 more
wiley   +1 more source

Joint Modulation Format Identification and Frequency Offset Estimation Based on Superimposed LFM Signal and FrFT

open access: yesIEEE Photonics Journal, 2019
We propose a novel technique for joint modulation format identification and frequency offset (FO) estimation. The linear frequency modulation signal which is obtained by a direct current signal and Fractional Fourier Transform (FrFT) is superimposed on ...
Yuxiao Guo   +6 more
doaj   +1 more source

Leaky-Wave Antenna Array With Bilateral Beamforming Radiation Pattern for Highly Efficient Mobile Communication System

open access: yesIEEE Access, 2023
In this paper, a leaky-wave antenna (LWA) array based on substrate integrated waveguide (SIW) is proposed for generating bilateral secant-distributed radiation pattern, which can cover a wide angular range including broadside direction.
Yulu Zhang, Junhong Wang, Yunjie Geng
doaj   +1 more source

Rapid Room‐Temperature Ethanol Sensing in Bi2MoO6/rGO Heterostructures: Weak Adsorption‐Driven Charge Modulation

open access: yesAdvanced Materials Technologies, EarlyView.
This work establishes Bi2MoO6/rGO heterostructures as a mechanism‐guided platform for high‐performance room‐temperature ethanol gas detection by showing that modest adsorption, in conjunction with dynamic interfacial band modulation, enables rapid charge‐transfer.
Sagarika Panda   +7 more
wiley   +1 more source

Efficient Frequency-Domain Block Equalization for Mode-Division Multiplexing Systems

open access: yesPhotonics
In this paper, an adaptive frequency-domain block equalizer (FDBE) implementing the adaptive moment estimation (Adam) algorithm is proposed for mode-division multiplexing (MDM) optical fiber communication systems. By packing all frequency components into
Yifan Shen   +4 more
doaj   +1 more source

Churn Prediction in Telecommunication using Logistic Regression and Logit Boost

open access: yesProcedia Computer Science, 2020
Today in every industry weather, it is ISP, IT products, social network or mobile services there is the problem of customer churn (Customers changing their services from one service provider to another).
Hemlata Jain, A. Khunteta, S. Srivastava
semanticscholar   +1 more source

Color Center Formation in Silicon‐On‐Insulator for On‐Chip Photonic Integration

open access: yesAdvanced Optical Materials, EarlyView.
ABSTRACT Color centers in silicon have great potential as single photon sources for quantum technologies. Some of them – like the T center – also possess optically‐active spins that enable spin‐photon interfaces for generating entangled photons and multi‐spin registers. This paper explores the generation of several types of color centers in silicon for
Arnulf J. Snedker‐Nielsen   +15 more
wiley   +1 more source

Photonic Microwave Signal Mixing Using Sagnac-Loop-Based Modulator and Polarization-Dependent Modulation

open access: yesIEEE Photonics Journal, 2016
A photonic-assisted microwave mixer using a Sagnac-loop-based modulator and polarization-dependent modulation is proposed and experimentally demonstrated.
Beilei Wu   +4 more
doaj   +1 more source

Circularly Polarized Red‐NIR Emission With High Dissymmetry Factor From Achiral [Mo6I8(OCOC2F5)6]2− Cluster Anion Embedded in a Bent‐Core Liquid Crystal Host

open access: yesAdvanced Optical Materials, EarlyView.
Associating a chiral bent core liquid crystal molecule, that self‐assembles into helical nanofilaments, with an achiral red‐NIR phosphorescent octahedral molybdenum cluster produces a hybrid material exhibiting efficient red‐NIR circularly polarized emission under UV excitation.
Jeanne Rebours   +6 more
wiley   +1 more source

Numerical Simulation of Three-Core Photonic Crystal Fiber With Large Group-Velocity Dispersion

open access: yesIEEE Access, 2020
The three-core photonic crystal fiber (TC-PCF) is proposed to obtain large group-velocity dispersion (GVD) because of the coupling effects between the fundamental modes (FMs) of the central core and higher-order modes (HOMs) of the two side cores.
Jianfang Yang   +3 more
doaj   +1 more source

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