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Passivation of degradation path enables high performance perovskite nanoplatelet lasers with high operational stability

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Photonics Research 2022年第6期10卷 1440-1452页

作者： GUOHUI LI HUIHUI PI YANFU WEI BOLIN ZHOU YA GAO RONG WEN YUYING HAO HAN ZHANG BENG S.ONG YANXIA CUI College of Physics and Optoelectronics Key Laboratory of Interface Science and Engineering in Advanced MaterialsKey Laboratory of Advanced Transducers and Intelligent Control System of Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Collaborative Innovation Centre for Optoelectronic Science and Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060China Department of Chemistry Research Centre of Excellence for Organic ElectronicsInstitute of Advanced MaterialsHong Kong Baptist UniversityKowloon TongHong KongChina

MAPbI_(3)perovskite has attracted widespread interests for developing low-cost near infrared semiconductor gain ***,it faces the instability issue under operation conditions,which remains a critical *** is found that the instability of the MAPbI_(3)nanoplatelet laser comes from the thermal-induced degradation progressing from the surface defects towards neighboring *** using PbI_(2) passivation,the defect-initiated degradation is significantly suppressed and the nanoplatelet degrades in a layer-by-layer way,enabling the MAPbI_(3)laser to sustain for 4500 s(2.7×10^(7) pulses),which is nearly three times longer than that of the nanoplatelet laser without ***,the PbI_(2) passivated MAPbI_(3)nanoplatelet laser with the nanoplatelet cavity displays a maximum quality factor up to∼7800,the highest reported for all MAPbI_(3)nanoplatelet ***,a high stability MAPbI_(3)nanoplatelet laser that can last for 8500 s(5.1×10^(7) pulses)is demonstrated based on a dual passivation strategy,by retarding the defect-initiated degradation and surface-initiated degradation *** work provides in-depth insights for understanding the operating degradation of perovskite lasers,and the dual passivation strategy paves the way for developing high stability near infrared semiconductor laser media.

关键词： stability initiated high

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Quantification of Extent of Muscle-skin Shifting by Traversal sEMG Analysis Using High-density sEMG Sensor

Quantification of Extent of Muscle-skin Shifting by Traversa...

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IEEE International Conference on Cyborg and Bionic systems (CBS)

作者： Shotaro Okajima Eduardo Iáñez Hiroshi Yamasaki Álvaro Costa García Fady S. Alnajjar Noriaki Hattori Shingo Shimoda Man-Machine Collaboration Research Team Robotics Project Baton Zone Program Science Technology and Innovation Hub RIKEN Nagoya Japan Brain-Machine Interface Systems Lab Miguel Hernández University of Elche Spain Intelligent Behavior Control Unit BTCC CBS RIKEN Nagoya Japan College of IT (CIT) UAE University (UAEU) Global Center for Medical Engineering and Informatics Osaka University

ISBN: (数字)9781728150734

ISBN: (纸本)9781728150741

Surface electromyography(sEMG) measurement has been an essential approach to analyze human behaviors because we can generally consider that sEMG signals represent the muscle activities as the final output of our nerve system. One of the most serious problems for considering sEMG signal as the muscle activity is the shift of the relative position between muscles and skin depending on a posture. The motion of forearm rotation is the prominent example of muscle-skin shifting depending on postural changes. The sEMG signal from a sensor may represent the different muscle activity when the muscle-skin shifting is happened. In this study, we discuss a method to quantify the muscle-skin shift from the sEMG signals in response to the postural changes. We use the high density sEMG sensor that is possible to measure sEMG signal as the potential map. We proposed the computation algorithm to quantify the amount of muscle-skin shifting based on the change of the sEMG signals in response to the postural changes. We conducted the experiments of wrist extension motions under three different forearm postures: forearm pronation, natural posture and forearm supination. Experimental results from three healthy subjects show that we can quantify the extent of muscle-skin shifting as an angle by using proposed algorithm.

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Analysis of neural interaction during adaptation of reach-to-grasp task under perturbation with Bayesian networks

Analysis of neural interaction during adaptation of reach-to...

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2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011

作者： Sang, Dong Lv, Bin He, Huiguang Wang, Feiyue He, Jiping State Key Laboratory of Intelligent Control and Management of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Harrington Departemnt of Bioengineering Center for Neural Interface Design Arizona State University Tempe United States

ISBN: (纸本)9781424493524

In this work, we took the analysis of neural interactions change in M1 of a monkey during the adaptation process for it to complete reach-to-grasp tasks with external perturbation across days. BN model was applied to model and evaluate neural interaction networks from recorded neural spike trains data of each set. Our results showed that for delay period across sets, interaction level of neural network tended to be higher during later stage of adaptation than during begin stage, which indicated the monkey performed more fully preparation through adaptation. In addition, for both delay period and peri-movement period, the neural interaction networks tended to change more stably from one set to the next as the monkey adapted to the perturbation experiment better. © 2011 IEEE.

关键词： Bayesian networks

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Optical see-through head mounted display direct linear transformation calibration robustness in the presence of user alignment noise

Optical see-through head mounted display direct linear trans...

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54th Human Factors and Ergonomics Society Annual Meeting 2010, HFES 2010

作者： Axholt, Magnus Skoglund, Martin Peterson, Stephen D. Cooper, Matthew D. Schön, Thomas B. Gustafsson, Fredrik Ynnerman, Anders Ellis, Stephen R. Department of Science and Technology Linköping University Sweden Division of Automatic Control Linköping University Sweden Human Systems Interface Division NASA Ames Research Center CA United States

ISBN: (纸本)9781617820885

The correct spatial registration between virtual and real objects in optical see-through augmented reality implies accurate estimates of the user's eyepoint relative to the location and orientation of the display surface. A common approach is to estimate the display parameters through a calibration procedure involving a subjective alignment exercise. Human postural sway and targeting precision contribute to imprecise alignments, which in turn adversely affect the display parameter estimation resulting in registration errors between virtual and real objects. The technique commonly used has its origin in computer vision, and calibrates stationary cameras using hundreds of correspondence points collected instantaneously in one video frame where precision is limited only by pixel quantization and image blur. Subsequently the input noise level is several order of magnitudes greater when a human operator manually collects correspondence points one by one. This paper investigates the effect of human alignment noise on view parameter estimation in an optical see-through head mounted display to determine how well a standard camera calibration method performs at greater noise levels than documented in computer vision literature. Through Monte-Carlo simulations we show that it is particularly difficult to estimate the user's eyepoint in depth, but that a greater distribution of correspondence points in depth help mitigate the effects of human alignment noise. Copyright 2010 by Human Factors and Ergonomics Society, Inc. All rights reserved.

关键词： Parameter estimation

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Optical See-Through Head Mounted Display Direct Linear Transformation Calibration Robustness in the Presence of User Alignment Noise

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2010年第28期54卷 2427 - 2431页

作者： Magnus Axholt Martin Skoglund Stephen D. Peterson Matthew D. Cooper Thomas B. Schön Fredrik Gustafsson Anders Ynnerman Stephen R. Ellis Department of Science and Technology Linköping University Sweden Division of Automatic Control Linköping University Sweden Human Systems Interface Division NASA Ames Research Center CA USA

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Simulation of multi-organisational coordination in emergency response for system resiliency

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International Journal of Technology, Policy and Management 2008年第4期8卷 442-459页

作者： Kanno, Taro Makita, Jumpei Furuta, Kazuo Graduate School of Engineering University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan Graduate School of Frontier Sciences University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo Japan Department of Systems Innovation University of Tokyo Japan East Japan Railway Company Department of Systems Innovation School of Engineering University of Tokyo Human Interface Society Society of Instrument and Control Engineers Atomic Energy Society of Japan

This paper presents a multi-agent and human-in-the-loop simulator for emergency response in disasters. We identified and categorised various typical situation-oriented rules using interviews and questionnaire surveys of emergency responders who hold positions as local government officials, police and nuclear experts, as well as observed emergency exercises during various disasters. These factors were then implemented into a previously developed organisational model of intra- and inter-agency communication and coordination for emergency response. Based on this model, a multi-agent simulator for organisational behaviour in emergency response was developed. In addition, a user console on an identical simulation platform was constructed and integrated with the multi-agent simulation. Users can exchange messages through the console by using the same ontology and message format as those used by computer agents. Test simulations were executed and the results confirmed that the multi-agent, human-in-the-loop simulation creates various complicated situations that are similar to actual emergency situations and, therefore, could be a strong candidate for education, training and exercises in disaster response. Copyright © 2008 Inderscience Enterprises Ltd.

关键词： Surveys

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Lessons learned from autonomous sciencecraft experiment

Lessons learned from autonomous sciencecraft experiment

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4th International Conference on Autonomous Agents and Multi agent systems, AAMAS 05

作者： Chien, Steve Sherwood, Rob Tran, Daniel Cichy, Benjamin Rabideau, Gregg Castaño, Rebecca Davies, Ashley Mandl, Dan Frye, Stuart Trout, Bruce D'Agostino, Jeff Shulman, Seth Boyer, Darrell Hayden, Sandra Sweet, Adam Christa, Scott Jet Propulsion Laboratory California Institute of Technology Goddard Space Flight Center Interface and Control Systems NASA Ames Research Center

An Autonomous Science Agent has been flying onboard the Earth Observing One Spacecraft since 2003. This software enables the spacecraft to autonomously detect and responds to science events occurring on the Earth such as volcanoes, flooding, and snow melt. The package includes AI-based software systems that perform science data analysis, deliberative planning, and run-time robust execution. This software is in routine use to fly the EO-1 mission. In this paper we briefly review the agent architecture and discuss lessons learned from this multi-year flight effort pertinent to deployment of software agents to critical applications. Copyright 2005 ACM.

关键词： Multi agent systems

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The autonomous sciencecraft embedded systems architecture

The autonomous sciencecraft embedded systems architecture

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IEEE systems, Man and Cybernetics Society, Proceedings - 2005 International Conference on systems, Man and Cybernetics

作者： Chien, Steve Sherwood, Rob Tran, Daniel Cichy, Benjamin Rabideau, Gregg Castaño, Rebecca Davies, Ashley Frye, Stuart Trout, Bruce D'Agostino, Jeff Shulman, Seth Mandl, Dan Boyer, Darrell Hayden, Sandra Sweet, Adam Christa, Scott Jet Propulsion Laboratory California Institute of Technology Goddard Space Flight Center Interface and Control Systems NASA Ames Research Center

An Autonomous Science Agent has been flying onboard the Earth Observing One Spacecraft since 2003. This software enables the spacecraft to autonomously detect and responds to science events occurring on the Earth such as volcanoes, flooding, and snow melt. This agent includes artificial intelligence software systems that perform science data analysis, deliberative planning, and run-time robust execution. This software is in routine use to fly the EO-1 mission. In this paper we discuss the architecture used to integrate these systems and lessons learned from its multi-year flight on EO-1. © 2005 IEEE.

关键词： Embedded systems

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Using autonomy flight software to improve science return on earth observing one

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Journal of Aerospace Computing, Information and Communication 2005年第APR.期2卷 196-216页

作者： Chien, Steve Sherwood, Rob Tran, Daniel Cichy, Benjamin Rabideau, Gregg Castano, Rebecca Davis, Ashley Mandl, Dan Frye, Stuart Trout, Bruce Shulman, Seth Boyer, Darrell Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 United States Goddard Space Flight Center Greenbelt MD 20771 United States Interface and Control Systems Indialantic FL 32903 Canada Autonomous Systems 4800 Oak Grove Drive United States Autonomous Sciencecraft Experiment 4800 Oak Grove Drive United States 4800 Oak Grove Drive United States Earth Observing One Mission Universe Division Code 490 Interface and Control Systems 122 Fourth Avenue Canada

NASA's Earth Observing One Spacecraft (EO-1) has been adapted to host an advanced suite of onboard autonomy software designed to dramatically improve the quality and timeliness of science-data returned from remote-sensing missions. The Autonomous Sciencecraft Experiment (ASE) enables the spacecraft to autonomously detect and respond to dynamic scientifically interesting events observed from EO-1's low earth orbit. ASE includes software systems that perform science data analysis, mission planning, and run-time robust execution. In this article we describe the autonomy flight software, as well as innovative solutions to the challenges presented by autonomy, reliability, and limited computing resources. Copyright © 2005 by the American Institute of Aeronautics and Astronautics, Inc.

关键词： Earth (planet)

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The autonomous sciencecraft embedded systems architecture

The autonomous sciencecraft embedded systems architecture

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IEEE International Conference on systems, Man and Cybernetics

作者： S. Chien R. Sherwood D. Tran B. Cichy G. Rabideau R. Castano A. Davies S. Frye B. Trout J. D'Agostino S. Shulman D. Mandl D. Boyer S. Hayden S. Sweet S. Christa Jet Propulsion Laboratory California Institute of Technology USA Goddard Space Flight Center NASA USA Interface and Control Systems Inc. NASA Ames Research Center USA

An Autonomous Science Agent has been flying onboard the Earth Observing One spacecraft since 2003. This software enables the spacecraft to autonomously detect and responds to science events occurring on the Earth such as volcanoes, flooding, and snow melt. This agent includes artificial intelligence software systems that perform science data analysis, deliberative planning, and run-time robust execution. This software is in routine use to fly the EO-1 mission. In this paper we discuss the architecture used to integrate these systems and lessons learned from its multi-year flight on EO-1.

关键词： Embedded system Computer architecture Geoscience Space vehicles Event detection Volcanoes Floods Snow Artificial intelligence Software systems

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