Results 61 to 70 of about 43,079 (286)

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

Wavelength switched hybrid TDMA/WDM (TWDM) PON: a flexible next-generation optical access solution [PDF]

, 2012
In this paper, we propose the system concepts of a next-generation wavelength switched hybrid time division multiple access and wavelength division multiplexing (TWDM) passive optical network (PON) architecture. In this architecture, wavelength selective
Colle, Didier, Demeester, Piet, Dixit, Abhishek, Lannoo, Bart, Pickavet, Mario   +4 more
core   +2 more sources

Water‐Stable Paper‐Based Laser‐Induced Graphene With Asymmetric Water Adhesion and Wettability

Advanced Materials Interfaces, EarlyView.
Paper‐based electronics are attractive for sustainable and disposable devices, but often fail in wet environments. By introducing Parafilm into cellulose paper combined with laser conversion, two graphene surfaces with different water interactions are created.
Lingyin Meng, Danfeng Cao, Ario Jafari, Mats Eriksson   +3 more
wiley   +1 more source

Adaptive crosstalk cancellation in dense wavelength-division multiplexing networks

Digest of Conference on Optical Fiber Communication, 1992
Laser frequency drift and close channel spacing in dense WDM networks can cause linear crosstalk.1 We propose to use the least mean squares (LMS) algorithm2 to adaptively cancel the crosstalk in an IM/DD receiver. This cancellation relaxes the laser frequency stabilization requirement and/or reduces the minimum channel spacing. A similar use of LMS was
Michael J. Minardi, Mary Ann Ingram, James T. Carr   +2 more
openaire   +2 more sources

On the 100 Gbps DWDM with Optical Carrier Suppression Modulation

Open Computer Science, 2021
This paper investigates the transmission performance of 16-channel DWDM (Dense Wavelength Division Multiplexing) system with two complex Optical Differential Quadrature Phase Shift Keying modulator configurations using 2 LiNb MZM (Mach-Zehnder Modulator)
Huszaník Tomáš, Turán Ján, Ovseník Ľuboš   +2 more
doaj   +1 more source

UDWDM-PON using low-cost coherent transceivers with limited tunability and heuristic DWA [PDF]

, 2016
A new Passive Optical Network (PON) for access, making use of Ultra Dense Wavelength Division Multiplexing (UDWDM) by densely spacing channels at few GHz, and introducing the “wavelength-to-the-user” concept, is proposed.
Polo Querol, Víctor, Prat Gomà, Josep Joan, Sales Zaragozá, Vicente, Segarra Mullerat, Josep, Velásquez Micolta, Juan Camilo   +4 more
core   +2 more sources

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Electrically controlled optical spectral filters for DWDM communication networks based on multiplexed three-layer holographic photopolymer-liquid crystal diffraction structures

Компьютерная оптика
This paper presents the diffraction characteristics of electrically controlled multiplexed three-layer holographic diffraction structures formed in photopolymer materials with a high proportion of nematic liquid crystals. The results obtained demonstrate
V.О. Dolgirev, D.S. Rastrygin, S.N. Sharangovich   +2 more
doaj   +1 more source

A Four-Channel DWDM Tunable Add/Drop Demultiplexer Based on Silicon Waveguide Bragg Gratings

IEEE Photonics Journal, 2019
We demonstrate a thermally tunable four-channel add/drop demultiplexer based on silicon grating-assisted contra-directional couplers (contra-DCs) for 200 GHz dense wavelength division multiplexing (DWDM) systems.
Debin Mu, Huiye Qiu, Jianfei Jiang, Xiaofei Wang, Zhilei Fu, Yuehai Wang, Xiaoqing Jiang, Hui Yu, Jianyi Yang   +8 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source