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Your search keyword '"Electronic, Optical and Magnetic Materials"' showing total 123,543 results
Start Over Descriptor "Electronic, Optical and Magnetic Materials" Publisher institute of electrical and electronics engineers (ieee)
123,543 results on '"Electronic, Optical and Magnetic Materials"'

1. Anode-Integrated GaN Field Emitter Arrays for Compact Vacuum Transistors

Author

Shih, Pao-Chuan, Perozek, Joshua, Akinwande, Akintunde I., Palacios, Tomás, Shih, Pao-Chuan, Perozek, Joshua, Akinwande, Akintunde I., and Palacios, Tomás

Abstract

Field-emission-based vacuum transistors have been proposed as promising candidates for future high-power and harsh-environment electronic devices. However, the lack of an integrated anode is still an issue for vertical field-emission vacuum transistors for some applications such as radiation-hard vacuum electronic-based circuits. In this work, an anode-integration technology enabled by tilted metal deposition is proposed and experimentally demonstrated on GaN gated field emitter arrays (FEAs). Full transistor prototypes with a 103 on-off ratio in anode current are demonstrated. This process is compatible with gated FEAs of various materials, the vacuum channel can be sealed during fabrication, and the vacuum channel length can be controlled via multiple process parameters., Department of Defense (DoD), Department of Energy (DOE)

Published
2024

11. Conceptual Design of CEPC Detector Magnet

Author

Menglin Wang, Feipeng Ning, Ling Zhao, Yatian Pei, Zian Zhu, Zhongxiu Liu, Huan Yang, Jin Zhou, and Qingjin Xu

Subjects
Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023

15. A Distributed Equivalent-Permeability Model for the 3-D Design Optimization of Bulk Superconducting Electromechanical Systems

Author

Inês S. P. Peixoto, F. Ferreira da Silva, João F. P. Fernandes, Silvio Vaschetto, and Paulo J. Costa Branco

Subjects
Electromagnetic force computation, finite-element model (FEM) models, high-temperature-superconductors, equivalent models, geometric optimization, superconducting bulk, Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023

16. Design and Simulation of CRAFT TF Winding Table

Author

Zhaohui Yan, Jian He, Wei Wen, Yu Wu, Zhihong Liu, Jiefeng Wu, and Jun Wen

Subjects
Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023

19. Timing Regulation Scheme for RSFQ Circuit

Author

Jia Li, Jie Ren, Jie Jin, Shucheng Yang, Minghui Niu, Liliang Ying, Xiaoping Gao, Siqi Li, and Wei Yan

Subjects
Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023

21. Optimization of Electromagnetic Design After Winding Tests for the Nb3Sn Cos-Theta Dipole Model for FCC-hh

Author

R. U. Valente, A. Ballarino, A. Bersani, M. Bracco, S. Burioli, B. Caiffi, S. Coelli, E. De Matteis, S. Farinon, A. Gagno, F. Levi, S. Mariotto, R. Musenich, A. Palmisano, A. Pampaloni, D. Perini, M. Prioli, N. Sala, M. Sorbi, S. Sorti, M. Statera, and G. Vernassa

Subjects
Superconducting magnets, Settore FIS/01 - Fisica Sperimentale, Nb3Sn, FCC, accelerator dipoles, finite element analysis, Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Published
2023

29. Simultaneous MMC Readout Using a Tailored $\mu$MUX Based Readout System

Author

D. Richter, M. Wegner, F. Ahrens, C. Enss, N. Karcher, O. Sander, C. Schuster, M. Weber, T. Wolber, and S. Kempf

Subjects
Physics - Instrumentation and Detectors, Condensed Matter - Superconductivity, Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Abstract

Magnetic microcalorimeters (MMCs) are cryogenic, energy-dispersive single-particle detectors providing excellent energy resolution, intrinsically fast signal rise time, quantum efficiency close to 100\%, large dynamic range as well as almost ideal linear response. One of the remaining challenges to be overcome to ultimately allow for the utilization of large-scale MMC based detector arrays with thousands to millions of individual pixels is the realization of a SQUID based multiplexing technique particularly tailored for MMC readout. Within this context, we report on the first truly multiplexed readout of an MMC based detector array using a frequency-division multiplexing approach realized by a custom microwave SQUID multiplexer based readout system., Comment: Conference: ASC2022 (accepted for publication in IEEE Transactions on Applied Superconductivity)

Published
2023

37. A Tabletop X-Ray Tomography Instrument for Nanometer-Scale Imaging: Demonstration of the 1,000-Element Transition-Edge Sensor Subarray

Author

Paul Szypryt, Nathan Nakamura, Daniel T. Becker, Douglas A. Bennett, Amber L. Dagel, W. Bertrand Doriese, Joseph W. Fowler, Johnathon D. Gard, J. Zachariah Harris, Gene C. Hilton, Jozsef Imrek, Edward S. Jimenez, Kurt W. Larson, Zachary H. Levine, John A. B. Mates, D. McArthur, Luis Miaja-Avila, Kelsey M. Morgan, Galen C. O'Neil, Nathan J. Ortiz, Christine G. Pappas, Daniel R. Schmidt, Kyle R. Thompson, Joel N. Ullom, Leila Vale, Michael R. Vissers, Christopher Walker, Joel C. Weber, Abigail L. Wessels, Jason W. Wheeler, and Daniel S. Swetz

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Electrical and Electronic Engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Abstract

We report on the 1,000-element transition-edge sensor (TES) x-ray spectrometer implementation of the TOMographic Circuit Analysis Tool (TOMCAT). TOMCAT combines a high spatial resolution scanning electron microscope (SEM) with a highly efficient and pixelated TES spectrometer to reconstruct three-dimensional maps of nanoscale integrated circuits (ICs). A 240-pixel prototype spectrometer was recently used to reconstruct ICs at the 130 nm technology node, but to increase imaging speed to more practical levels, the detector efficiency needs to be improved. For this reason, we are building a spectrometer that will eventually contain 3,000 TES microcalorimeters read out with microwave superconducting quantum interference device (SQUID) multiplexing, and we currently have commissioned a 1,000 TES subarray. This still represents a significant improvement from the 240-pixel system and allows us to begin characterizing the full spectrometer performance. Of the 992 maximimum available readout channels, we have yielded 818 devices, representing the largest number of TES x-ray microcalorimeters simultaneously read out to date. These microcalorimeters have been optimized for pulse speed rather than purely energy resolution, and we measure a FWHM energy resolution of 14 eV at the 8.0 keV Cu K$\alpha$ line., Comment: 5 pages, 4 figures, submitted to IEEE Transactions on Applied Superconductivity

Published
2023

46. Design of Max Pooling Operation Circuit for Binarized Neural Networks Using Single-Flux-Quantum Circuit

Author

Zongyuan Li, Zeyu Han, Yuki Yamanashi, and Nobuyuki Yoshikawa

Subjects
Asynchronous logic gate, Logic gates, exclusive-OR, Random access memory, Condensed Matter Physics, Throughput, Convolution, Electronic, Optical and Magnetic Materials, SFQ circuit, Convolutional neural networks, Feedback loop, Electrical and Electronic Engineering, superconductor logic circuits, Clocks
Abstract

For the binary neural network (BNN), We design a max pooling operation circuit (MPOC) using single-flux-quantum circuits based on the multiple data comparators. To continuously compare multiple data and find the maximum value, the multiple data comparator uses the internal state of non-destructive read-out (NDRO) flip-flop and NDRO with complementary outputs to store the maximum value. The MPOC is designed with a gate-level pipeline architecture and uses the internal state to store the maximum value, avoiding the use of feedback loops or tree structures when comparing multiple data. Therefore, the area of the MPOC is reduced by approximately 74% compared to the conventional MPOC using many shift registers with tree structures. The throughput is approximately 21.2 times higher and the area is reduced by 22.1% when compared with the conventional MPOC using feedback loops. We designed an MPOC with 2878 Josephson junctions using a 10 kA/cm＾2 Nb process. The proposed circuit can be used for pooling operations of any size after a 1-channel 3x3 convolutional layer, which accelerates the forward propagation process of binary neural networks (BNNs). Simulation results show that the MPOC can perform pooling operations continuously at the frequency of 50 GHz.

Published
2023

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