Results 201 to 210 of about 853,308 (389)

AGORA: Adaptive Generation of Orthogonal Rational Approximations for Frequency‐Response Data

open access: yesInternational Journal of Circuit Theory and Applications, EarlyView.
This paper introduces the adaptive generation of orthogonal rational approximations (AGORA) method for rational function approximation of measured or simulated microwave network parameters. AGORA allows estimating the model order for a given error tolerance and does not require any initial estimates or adjustment of hyperparameters. ABSTRACT This paper
Andria Lemus, Arif Ege Engin
wiley   +1 more source

Comparative Analysis of Graded‐Index and Quarter‐Wave One‐Dimensional Photonic Crystal Filters for GaSb Thermophotovoltaic Cells

open access: yesEnergy Technology, EarlyView.
The efficiency and output power of thermophotovoltaic systems can be improved by using one‐dimensional photonic crystal optical filters with graded index profiles. Using a filter with a graded index profile increases the system efficiency from 15.8 to 27%.
Mehran Sepah Mansoor   +2 more
wiley   +1 more source

High-efficiency microwave photodetection by cavity coupled double dots with single cavity-photon sensitivity [PDF]

open access: yesarXiv
We present a superconducting cavity-coupled double quantum dot (DQD) photodiode that achieves a maximum photon-to-electron conversion efficiency of 25% in the microwave domain. With a higher-quality-factor cavity and improved device design to prevent photon leakages through unwanted pathways, our device measures microwave signals down to 100 aW power ...
arxiv  

Applications of Lignin‐Dervied Carbon Quantum Dots: Current Status and Challenges

open access: yesExploration, EarlyView.
Based on previous studies, this paper reviews the current preparation methods of lignin carbon quantum dots (LCQDs), and focuses on the preparation of lignin derivatives and various lignin based CQDs fluorescent materials and their applications in heavy metal ion detection, biological imaging, anti‐counterfeiting printing, optical devices and other ...
Xiuxin Yin   +8 more
wiley   +1 more source

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