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SSRN 2023年

作者： Wang, Lu Fei, Zhenxuan Wu, Zutang Ye, Yao Qi, Youchao Wang, Jiuhong Zhao, Libo Zhang, Chi Zhang, Yun Qin, Guangzhao Jiang, Zhuangde Maeda, Ryutaro Research Institute for Intelligent Sensing Technology and System Xi’an710049 China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing101400 China School of Mechanical Engineering Xi’an Jiaotong University Xi’an710049 China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai265503 China Northwest Institute of Nuclear Technology Xi’an710024 China Research Institute for Micronano Sensing Technology Yantai264006 China Hangzhou Dianzi University

The Internet of Things calls for the demand for wearable self-powered sensors for human motion monitoring and interaction. However, the redundant data and large amount of power consumption limits the application in sustainable wireless sensing. In this study, a flexible hybrid generator with bridge structure design for self-powered wearable sensor is proposed. When harvesting energy from the finger bent motion, it combines contact separation mode for triboelectric nanogenerator (TENG) with bending d31 mode for piezoelectric generator (PEG). To highlight the significance, we propose an autonomous wake-up wireless sensing method by hybrid generator in wearable bending. Different from recording and transmitting data all the time, the TENG signal as a trigger to record the PEG voltage amplitude as angle sensing data for wireless transmitting. Concise and accurate sensing data with autonomous wake-up is expected to reduce the computational burden and power consumption for wireless sensing and provide more possibilities for wearable wireless monitoring and human-computer interaction. The wireless manipulator interaction experiment based on this hybrid generator as wearable bending sensor verifies the feasibility of this scheme, which has a great application prospect in wearable self-powered sensors field such as virtual reality and robot control. © 2023, The Authors. All rights reserved.

关键词： Electric power utilization

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Structural and optical properties evolution in pressure-induced amorphization of metal-organic framework ZIF-8

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Chinese Optics Letters 2022年第9期20卷 49-54页

作者： Xin Huang Jin He Yiguang Jiang Zhuocheng Chen Xing Duan Long Zhang CAS Key Laboratory of Materials for High Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China College of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences(UCAS)Beijing 100049China Hangzhou Institute for Advanced Study UCASHangzhou 310024China School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China Center of Advanced Optoelectronic Materials and Devices Key Laboratory of Novel Materials for Sensor of Zhejiang ProvinceCollege of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310018China Collaborative Innovation Center of IFSA(CICIFSA) Shanghai Jiao Tong UniversityShanghai 200240China

Zeolitic imidazolate framework-8(ZIF-8),a metal-organic framework(MOF)with a non-centrosymmetric crystal structure,exhibits nonlinear optics(NLO)properties and can act as the nanoporous matrix of guest *** of ZIF-8 can be achieved by pressure or high *** crystalline and amorphous states have their inherent features for optical *** effects of the crystalline-amorphous transition on the structural and optical properties under pressure were investigated in *** leads to the destruction of the ZIF-8 lattice structure,collapse of pores,and the change of spatial symmetry,which in turn alters the NLO properties of ZIF-8 and the luminescence properties of the guest Eu *** results establish the structure–optical properties relationship in the amorphization process and provide new clues in designing novel MOFs optical materials.

关键词： ZIF-8 structure optical properties pressure

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Non-Contact Breathing Signal Classification Using Hybrid Scalogram Image Representation Feature

Non-Contact Breathing Signal Classification Using Hybrid Sca...

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International Conference on advanced Mechatronic Systems (ICAMechS)

作者： Muhammad Husaini Latifah Munirah Kamarudin Hiromitsu Nishizaki Intan Kartika Kamarudin Muhammad Amin Ibrahim Ammar Zakaria Masahiro Toyoura Xiaoyang Mao Faculty of Electronic Engineering Technology Universiti Malaysia Perlis Malaysia Integrated Graduate School of Medicine Engineering and Agricultural Sciences University of Yamanashi Japan Department of Otorhinolaryngology Head and Neck Surgery Universiti Teknologi MARA Malaysia Department of Internal Medicine Faculty of Medicine Universiti Teknologi MARA Malaysia Advanced Sensor Technology Centre of Excellence Universiti Malaysia Perlis Malaysia

ISBN: (纸本)9781665463812

When monitoring human vital signs, breathing is one of the most critical physiological metrics. In areas with limited resources and a shortage of trained medical professionals, automated analysis of abnormal breathing patterns may prove advantageous to healthcare systems. In this paper, we implemented the architecture of five transfer learning models to classify individuals’ breathing patterns using our proposed method which uses hybrid scalogram image-based features. We implemented the Sleep Breathing Detection Algorithm (SBDA) for extracting the actual breathing signals from ultra-wideband (UWB) radar for the pre-processing method. Later, the signals were converted to hybrid scalogram image-based representations before being classified using the VGG16, DenseNet, Xception, ResNet, and MobileNet models. The performance of the proposed method was validated using two other image representations: a standard image and a spectrogram image. The overall result showed that the proposed method obtained the highest classification accuracy on the test set for all pre-trained models.

关键词： Mechatronics Transfer learning Pattern classification Medical services Image representation Sleep apnea Ultra wideband radar

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RETRACTION: Luminescent solar concentrator efficiency enhanced via nearly lossless propagation pathways

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NATURE PHOTONICS 2024年第9期18卷 998-998页

作者： Park, Kyoungwon Yi, Jeongmin Yoon, Suk-Young Park, Seong Min Kim, Jiyong Shin, Hyun-Beom Biswas, Swarup Yoo, Gang Yeol Moon, Sang-Hwa Kim, Jiwan Oh, Min Suk Wedel, Armin Jeong, Sohee Kim, Hyeok Oh, Soong Ju Kang, Ho Kwan Yang, Heesun Han, Chul Jong Display Research Center Korea Electronics Technology Institute Seongnam-si Republic of Korea Department of Materials Science and Engineering Korea University Seoul Republic of Korea Department of Materials Science and Engineering Hongik University Seoul Republic of Korea Functional Materials and Devices Fraunhofer Institute for Applied Polymer Research Potsdam Germany Device Technology Division Korea Advanced Nano Fab Center Suwon-si Republic of Korea School of Electrical and Computer Engineering Center for Smart Sensor System of Seoul (CS4) University of Seoul Seoul Republic of Korea Department of Advanced Materials Engineering Kyonggi University Suwon-si Republic of Korea Department of Energy Science Sungkyunkwan Institute of Energy Science and Technology (SIEST) Artificial Atom and Quantum Materials Center Sungkyunkwan University (SKKU) Suwon Republic of Korea

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Optimal Designing of Grid-Connected Hybrid Renewable Model Using Harmony Search Algorithm

Optimal Designing of Grid-Connected Hybrid Renewable Model U...

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Silchar Subsection Conference (SILCON), IEEE

作者： Shubhangi Mishra Gaurav Saini Anurag Chauhan Sunanda Sinha School of Advanced Materials Green Energy and Sensor System Indian Institute of Engineering Science and Technology Shibpur Howrah West Bengal India Department of Mechanical Engineering Harcourt Butler Technical University Kanpur India Department of Electrical Engineering Rajkiya Engineering College Banda Uttar Pradesh India Centre for Energy & Environment Malaviya National Institute of Technology Jaipur Rajasthan India

ISBN: (纸本)9781665471015

The hybrid renewable energy system needs to be sufficiently developed in the future such that the shortening of fossil fuels does not affect the economic growth of the world. However, the uncertainty and intermittency of these resources make it necessary to have an energy storage system. In the present scenario, storage systems are expensive and hence it is always advisable to perform optimal sizing of such systems. This will improve the efficiency and utilization of the system. Under the present work, the optimal sizing of a grid-connected hybrid renewable energy system is performed. The model proposed includes biomass, solar, grid, and battery as storage, and evaluation is carried out based on the technical and economical parameters for the rural site of Madhya Pradesh. For this purpose, the discrete harmony search algorithm is applied to minimize the total annualized cost of the system. For the optimal contribution of each resource, two resource scenario is analyzed here and, further results are validated using the particle swarm algorithm (PSO). The optimal model has 33.75 kW solar PV, biomass of 30 kW, battery of 98.4 kW, and the system is connected to the grid. The total annualized cost obtained for the best case is Rs 6.58 million and the cost of energy is Rs 4.85/kWh.

关键词： Costs Uncertainty Biological system modeling Fossil fuels Biomass Batteries Reliability

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Antisymmetry breaking coupling-enhanced sensing of quantum reservoirs

arXiv

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arXiv 2023年

作者： Yuan, Ji-Bing Tang, Zhi-Min Song, Ya-Ju Tang, Shi-Qing Peng, Zhao-Hui Wang, Xin-Wen Kuang, Le-Man Key Laboratory of Opto-electronic Control and Detection Technology of University of Hunan Province College of Physics and Electronic Engineering Hengyang Normal University Hengyang421002 China Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials Department of Physics Hunan University of Science and Technology Xiangtan411201 China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics Hunan Normal University Changsha410081 China Synergetic Innovation Academy for Quantum Science and Technology Zhengzhou University of Light Industry Zhengzhou450002 China

We investigate the use of a single generalized dephasing qubit for sensing a quantum reservoir, where the antisymmetry of the coupling between the qubit and its reservoir is broken. Our results indicate that in addition to the decay factor encoding channel, the antisymmetry breaking coupling introduces another phase factor encoding channel. We propose an optimal measurement strategy for the generalized dephasing qubit which enables the practical measurement precision to reach the theoretical ultimate precision quantified by the quantum signal-to-noise ratio (QSNR). As an application example, the generalized dephasing qubit is employed to estimate the s-wave scattering length of an atomic Bose-Einstein condensate. It is found that the QSNR contributed by the antisymmetry breaking coupling is at least two orders of magnitude higher than the QSNR contributed by the antisymmetry coupling at the millisecond timescale, and the optimal relative error can achieve a scaling ∝ 1/(χt) in long-term encoding, where χ represents the relative driving strength and t is the encoding time. Our work opens a way for supersensitive sensing of quantum reservoirs. Copyright © 2023, The Authors. All rights reserved.

关键词： Qubits

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Correction: The effects on performance and emission characteristics of DI engine fuelled with CeO2 nanoparticles addition in diesel/tyre pyrolysis oil blends

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Environment, Development and Sustainability 2022年 1-2页

作者： Rajak, Upendra Nashine, Prerana Chaurasiya, Prem Kumar Verma, Tikendra Nath Dasore, Abhishek Pathak, Kamal Kishore Dwivedi, Gaurav Shukla, Anoop Kumar Saini, Gaurav Department of Mechanical Engineering Rajeev Gandhi Memorial College of Engineering and Technology Nandyal India Department of Mechanical Engineering Oriental Institute of Science & Technology Bhopal India Department of Mechanical Engineering Bansal Institute of Science and Technology Bhopal India Department of Mechanical Engineering Maulana Azad National Institute of Technology Bhopal India Department of Mechanical Engineering Government Polytechnic Sheikhpura India Energy Centre Maulana Azad National Institute of Technology Bhopal India Department of Mechanical Engineering Amity University Uttar Pradesh Noida India School of Advanced Materials Green Energy and Sensor Systems Indian Institute of Engineering Science and Technology (IIEST) Howrah India

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Nanophotonic sensor implants with 3D hybrid periodic-amorphous photonic crystals for wide-angle monitoring of long-term in-vivo intraocular pressure

Nanophotonic sensor implants with 3D hybrid periodic-amorpho...

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International Electron Devices Meeting (IEDM)

作者： R. H. Siddique L. Liedtke H. Park S. Y. Lee H. Raniwala D. Y. Park D. H. Lim H. Choo Image Sensor Lab Samsung Semiconductor Inc. Pasadena USA Caltech Pasadena CA USA Samsung Medical Center Seoul Korea Samsung Advanced Institute of Technology Suwon Korea

ISBN: (数字)9781728188881

ISBN: (纸本)9781728188898

Glaucoma, one of the leading cause of irreversible blindness, is largely caused by an elevated intraocular pressure (IOP). However, current IOP monitoring techniques inherit major disadvantages such as imprecision, no real or long time monitoring, and difficult readout. Here, we report on a highly miniaturized (200 um thick) optomechanical nanophotonic sensor implant for long-term, continuous and on-demand IOP monitoring. This IOP sensor is made of a flexible 3D hybrid photonic crystals (HPC) that functions as a pressure-sensitive optical resonator (0.1 nm/mm Hg) and delivers IOP readings when interrogated with near-infrared light with an average accuracy of 0.56 mm Hg over the range of 0-40 mm Hg. A new fabrication process is developed using colloidal self-assembly leading to a single step formation of hybrid periodic and amorphous layers exploiting the inverse process of a drying "coffee-stain" effect. The HPC results in a wide-angle strong resonance of ±40° ensuring an easy and accurate remote and long readout distance. 8 sensors were mounted inside the anterior chamber in New Zealand white rabbits and provided continuous, accurate measurements of IOP with handheld detector for up to 6 months with no signs of inflammation.

关键词： Three-dimensional displays Sensitivity Displacement measurement Optical variables measurement Mercury (metals) Monitoring Thickness measurement

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Non-Contact Vital Sign Monitoring During Sleep Through UWB Radar

TechRxiv

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TechRxiv 2022年

作者： Husaini, Muhammad Kamarudin, Intan Kartika Kamarudin, Latifah Munirah Ibrahim, Muhammad Amin Zakaria, Ammar School of Computer and Communication Engineering Universiti Malaysia Perlis Perlis Malaysia Department of Otorhinolaryngology Head and Neck Surgery Universiti Teknologi MARA Kuala Lumpur Malaysia Department of Internal Medicine Faculty of Medicine Universiti Teknologi MARA Kuala Lumpur Malaysia Centre of Advanced Sensor and Technology Universiti Malaysia Perlis Perlis Malaysia

To date, ultra-wideband (UWB) radar is one of the leading technologies applied in the field of non-contact vital sign monitoring. A number of studies have focused on processing reflected UWB pulse signals into breathing and heart activities;however, most have emphasised the use of stationary subjects in their data collection processes. Therefore, this paper presents a feasible study conducted to extract the human vital signs of a non-stationary subject during sleep and the optimum position of the UWB radar. The proposed algorithm could measure the respiration rate (RR) and heart rate (HR) recorded regardless of any random body movements during sleep. An analysis of the entire slow time region for the signal was performed to remove random movement signals from the subject by implementing a sinusoidal fitting algorithm to monitor the periodic movement of the chest wall. Next, the value of R-squared was used to find the fit between the algorithm and output signals, and then, the signal was transformed into a frequency domain via Fourier transform (FT). This allowed the determination of the dominant peak from the breathing and heart rates before changing to the rate per minute. An experiment was also done to monitor three different UWB radar positions (i.e. top, side, and bottom of the bed) to identify its optimum location during sleep. All results were then compared with the polysomnography signal. The result found that the top position has the lowest error rate percentage for both RR and HR with only 0.72% and 3.71%, respectively. © 2022, CC BY.

关键词： Frequency domain analysis

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Generating Bell states and Werner states of two qubits via optical field

arXiv

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arXiv 2024年

作者： Jiang, Dengkui Zhai, Cuilu Song, Yaju Peng, Zhaohui Yuan, Jibing Tang, Shiqing Lu, Wangjun Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics Synergetic Innovation Center for Quantum Effects and Applications Hunan Normal University Changsha410081 China Department of Maths and Physics Hunan Institute of Engineering Xiangtan411104 China College of Physics and Electronic Engineering Hengyang Normal University Hengyang421002 China Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials Department of Physics Hunan University of Science and Technology Xiangtan411201 China

In this paper, we investigate how the evolution of the states of two qubits initially in a direct product state can be controlled by the optical field in a Tavis-Cummings (TC) model. For the two qubits initially in the direct product state, we find that their matrix elements at any moment can be modulated by the coefficients of the optical field initial states in the number state space. We propose a method for preparing an X-type state of two qubits. Subsequently, for descriptive convenience, we divide the Bell states of the two qubits into two kinds in the paper. When both qubits are initially in the ground state, we find that the two qubits can be controlled to produce the first type of Bell state by the superposition state optical field that is initially in the next-nearest-neighbor number state and that the production of any of the first type of Bell states can be controlled by controlling the phase between the two next-nearest-neighbor number states. When one of the two qubits is in the ground state, and the other is in the excited state, we can control the two qubits to produce the second type of Bell state by the single-photon number state optical field. Finally, we study the generation of Werner states by controlling two qubits initially, both in the ground state, using an optical field. © 2024, CC BY.

关键词： Ground state

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