Results 21 to 30 of about 30,232 (262)

DESIGN AND ANALYSIS OF OPTICAL SWITCH FOR DATA CENTER NETWORKS INCORPORATING ACO-OFDM WITH PAPR REDUCTION [PDF]

Journal of Engineering Science and Technology, 2018
Currently optical data centers heavily rely on electronics for information transfer. In near future electronic switching will face problem in supporting higher data rates. Therefore, a slow migration from electronic to optical switching has been observed.
RAVI KUMAR, ANURAG TRIPATHI
doaj  

Broadband and ultrafast all-optical switching based on transition metal carbide

Nanophotonics, 2021
Ultrafast all-optical switches have attracted considerable attention for breaking through the speed limitation of electric devices. However, ultrafast and high-efficiency all-optical switches based on two-dimensional (2D) materials can be achieved due to
Wang Cong, Gao Lingfeng, Chen Hualong, Xu Yiquan, Ma Chunyang, Yao Haizi, Song Yufeng, Zhang Han   +7 more
doaj   +1 more source

Effectiveness of rTMS on Working Memory and Inhibitory Impairments in Patients With Post‐Stroke Executive Deficits

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao, Rongwei Du, Zhujun Wang, Yang Gao, Meiling Cheng, Xianglong Wang, Wen Wu   +6 more
wiley   +1 more source

Control of randomly scattered surface plasmon polaritons for multiple-input and multiple-output plasmonic switching devices

Nature Communications, 2017
Losses of bandwidth are inevitable when interfacing between optical and electronic components. Here the authors present a switching device consisting of a two-dimensional disordered array of nanoholes that can potentially transfer information about 40 ...
Wonjun Choi, Yonghyeon Jo, Joonmo Ahn, Eunsung Seo, Q-Han Park, Young Min Jhon, Wonshik Choi   +6 more
doaj   +1 more source

Global Rather Than Vertical‐Selective Saccadic Abnormalities in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To test whether vertical saccades are preferentially affected in Progressive Supranuclear Palsy (PSP). Methods PSP patients (n = 24) were compared to age‐matched controls (n = 94) and two degenerative groups (Alzheimer's disease, n = 20; Lewy body disease, n = 50).
Duy Duan Nguyen, Mark Paine, Soohyun Lee, Amir Fazlollahi, Baibin (Ben) Wang, John D. O'Sullivan, Peter J. Nestor   +6 more
wiley   +1 more source

Eco-friendly virgin grape seed oil as a strong thermo-optic nonlinear medium for all-optical modulation and switching

Results in Physics
A comprehensive understanding of the nonlinear optical characteristics of materials is essential for the development of nonlinear optical applications and the advancement of all-optical devices. Nonlinear phase modulation is emerging as an attractive and
Amir Namiq Hassan, Mohammad Ali Haddad
doaj   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Tutorial: Integrated-photonic switching structures

APL Photonics, 2018
Recent developments in waveguided 2 × 2 and N × M photonic switches are reviewed, including both broadband and narrowband resonant devices for the Si, InP, and AlN platforms.
Richard Soref
doaj   +1 more source

Reversible phase transition for switchable second harmonic generation in 2D perovskite microwires

SmartMat, 2022
Highly efficient second‐harmonic generation (SHG) has facilitated the development of nanophotonics and sustained promising applications, ranging from electro‐optical modulation, frequency conversion, and optical frequency combs to pulse characterization.
Yingjie Zhao, Jiahui Zhao, Yangwu Guo, Jinjin Zhao, Jiangang Feng, Yue Geng, Junchuan Yang, Hanfei Gao, Meng Yuan, Lei Jiang, Yuchen Wu   +10 more
doaj   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source