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9th International Conference on Wireless and Telematics, ICWT 2023

作者： Ahdan, Syaiful Zaki Hamidi, Eki Ahmad Riskiono, Sampurna Dadi Negara, Ridha Muldina Mayasari, Ratna Ramadona, Suci Nurhayati, Ade Sucipto, Adi Jupriyadi Nurkahfi, Galih Nugraha Farahiyah, Dzata Naseer, Muchammad Universitas Teknokrat Indonesia Faculty of Engineering & Computer Science Lampung35132 Indonesia Uin Sunan Gunung Djati Bandung Electrical Engineering Department Bandung40614 Indonesia School of Electrical Engineering Telkom University Bandung40257 Indonesia Elearical Engineering Study Program Politeknik Caltex Riau Riau28265 Indonesia Institut Teknologi Telkom Jakarta Faculty of Engineering Jakarta11710 Indonesia Bandung40135 Indonesia Universitas Islam Indonesia Yogyakarta Faculty of Industrial Technology Yogyakarta55584 Indonesia Sekolah Tinggi Teknologi Bandung Informatics Department Bandung40235 Indonesia

ISBN: (纸本)9798350305029

Many different industries are currently making substantial use of the Internet of Things (IoT). IoT is the process through which electronic devices communicate with their surrounding virtual environment by continuously exchanging data via sensors. Due to increased IoT security concerns, digital forensic investigators now possess greater knowledge and abilities to investigate IoT devices. IoT-DigFor are required in terms of cybercrime due to the rapid growth in the number of electronic devices and the collection and consumption of enormous amounts of data. IoT systems with billions of devices have produced a significant amount of evidence, which presents a significant challenge to digital investigators and practitioners who must connect with IoT devices to conduct fast and thorough investigations into cybercrimes. This article presents detailed information about forensics in the IoT environment. The IoT forensic paradigm and the challenges that design-based security requirements and IoT system security offer for IoT-DigFor are covered in great detail at the beginning of the article. © 2023 IEEE.

关键词： Internet of things

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Ultra-low energy programmable non-volatile silicon photonics based on graphene heaters

Ultra-low energy programmable non-volatile silicon photonics...

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CLEO: science and Innovations, S and I 2022

作者： Fang, Zhuoran Chen, Rui Zheng, Jiajiu Khan, Asir Intisar Neilson, Kathryn M. Saxena, Abhi Chen, Michelle Rios, Carlos Hu, Juejun Pop, Eric Majumdar, Arka Department of Electrical and Computer Engineering University of Washington SeattleWA98195 United States Department of Physics University of Washington SeattleWA98195 United States Department of Electrical Engineering Stanford University StanfordCA94305 United States Department of Materials Science and Engineering University of Maryland College ParkMD20742 United States Institute for Research in Electronics & Applied Physics University of Maryland College ParkMD20742 United States Department of Materials Science and Engineering Massachusetts Institute of Technology MA02139 United States

We demonstrate a nonvolatile electrically programmable phase-change silicon photonic switch and phase shifter leveraging a monolayer graphene heater with record-high programming energy efficiency (8.7±1.4 aJ/nm3)... 详细信息

ISBN: (纸本)9781557528209

关键词： Silicon photonics

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Microsphere-assisted quantitative phase microscopy:a review

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Light(Advanced Manufacturing) 2024年第1期5卷 131-150页

作者： Vahid Abbasian Tobias Pahl Lucie Hüser Sylvain Lecler Paul Montgomery Peter Lehmann Arash Darafsheh Department of Radiation Oncology Washington University School of Medicine in St.LouisSt.LouisMO 63110USA Imaging Science Program McKelvey School of EngineeringWashington University in St.LouisSt.LouisMO 63130USA Measurement Technology Group Faculty of Electrical Engineering and Computer ScienceUniversity of KasselWilhelmshöher Allee 7134121 KasselGermany ICube Research Institute INSA StrasbourgUniversitéde StrasbourgCNRS67000 StrasbourgFrance

Light microscopes are the most widely used devices in life and material sciences that allow the study of the interaction of light with matter at a resolution better than that of the naked *** microscopes translate the spatial differences in the intensity of the reflected or transmitted light from an object to pixel brightness differences in the digital ***,a phase microscope converts the spatial differences in the phase of the light from or through an object to differences in pixel *** microscopy,a phase-based approach,has found application in various *** interferometry has brought nanometric axial resolution,the lateral resolution in quantitative phase microscopy(QPM)has still remained limited by diffraction,similar to other traditional microscopy *** the resolution has been the subject of intense investigation since the invention of the microscope in the 17th *** the past decade,microsphere-assisted microscopy(MAM)has emerged as a simple and effective approach to enhance the resolution in light *** can be integrated with QPM for 3D label-free imaging with enhanced ***,we review the integration of microspheres with coherence scanning interference and digital holographic microscopies,discussing the associated open questions,challenges,and opportunities.

关键词： Phase microscopy Digital holographic microscopy Microsphere Resolution

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Ontology-Driven IoT System for Monitoring Hypertension 25

Ontology-Driven IoT System for Monitoring Hypertension

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25th International Conference on Enterprise Information Systems, ICEIS 2023

作者： de Souza, Pedro Lopes de Souza, Wanderley Lopes Pires, Luís Ferreira Moreira, João Luiz Rebelo da Silva Rodrigues, Ronitti Juner Ciferri, Ricardo Rodrigues Semantics Cybersecurity & Services Group Faculty of Electrical Engineering Mathematics and Computer Science University of Twente P.O. Box 217 Enschede Netherlands Ubiquitous Computing Group Graduate Program in Computer Science Computing Department Federal University of São Carlos P.O. Box 676 São Carlos Brazil

ISBN: (纸本)9789897586484

Hypertension is a noncommunicable disease (NCD) that causes global concern, high costs and a high number of deaths. Internet of Things, Ubiquitous Computing, and Cloud Computing enable the development of systems for remote and real-time monitoring of patients affected with NCDs like hypertension. This paper reports on a system for monitoring hypertension patients that was built by employing these techniques. This system allows the vital signs of a patient (blood pressure, heart rate, body temperature) to be captured via sensors built in a wearable device similar to a wristwatch. These signals are transmitted to the patient's mobile device for processing, and the generated clinical data are sent to the cloud to be properly presented and analysed by the health professionals responsible for the patient. To deal with semantic interoperability issues that arise when multiple different devices and system components must interoperate, a semantic model was conceived for this system in terms of ontologies for diseases and devices. This paper also presents the semantic module that we developed and implemented in the cloud to perform reasoning based on this model, demonstrating the potential benefits of incorporating semantic technologies in our system. Copyright © 2023 by SCITEPRESS - science and Technology Publications, Lda. Under CC license (CC BY-NC-ND 4.0)

关键词： Ontology

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Acoustofluidic separation enables early diagnosis of traumatic brain injury based on circulating exosomes

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Microsystems & Nanoengineering 2021年第2期7卷 59-69页

作者： Zeyu Wang Haichen Wang Ryan Becker Joseph Rufo Shujie Yang Brian E.Mace Mengxi Wu Jun Zou Daniel T.Laskowitz Tony Jun Huang Department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC27708USA Department of Neurology Duke UniversityDurhamNC27708USA Department of Biomedical Engineering Duke UniversityDurhamNC27708USA Department of Geriatrics Duke UniversityDurhamNC27708USA Department of Electrical&Computer Engineering Texas A&M UniversityCollege StationTX77840USA

Traumatic brain injury(TBI)is a global cause of morbidity and *** management and risk stratification of patients with TBI is made difficult by the relative insensitivity of screening radiographic studies as well as by the absence of a widely available,noninvasive diagnostic *** particular,a blood-based biomarker assay could provide a quick and minimally invasive process to stratify risk and guide early management strategies in patients with mild TBI(mTBI).Analysis of circulating exosomes allows the potential for rapid and specific identification of tissue *** applying acoustofluidic exosome separation—which uses a combination of microfluidics and acoustics to separate bioparticles based on differences in size and acoustic properties—we successfully isolated exosomes from plasma samples obtained from mice after *** isolation eliminated interference from other blood components,making it possible to detect exosomal biomarkers for TBI via flow *** cytometry analysis indicated that exosomal biomarkers for TBI increase in the first 24 h following head trauma,indicating the potential of using circulating exosomes for the rapid diagnosis of *** levels of TBI biomarkers were only detected in the samples separated via acoustofluidics;no changes were observed in the analysis of the raw plasma *** finding demonstrated the necessity of sample purification prior to exosomal biomarker *** acoustofluidic exosome separation can easily be integrated with downstream analysis methods,it shows great potential for improving early diagnosis and treatment decisions associated with TBI.

关键词： diagnosis separation injury

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Modular Self-Lock Origami: design, modeling, and simulation to improve the performance of a rotational joint

arXiv

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arXiv 2023年

作者： Zare, Samira Spaeth, Alex Suresh, Sandya Teodorescu, Mircea Department of Electrical and Computer Engineering University of California Santa Cruz United States SIP program University of California Santa Cruz United States Department of Computer Science and Engineering United States

Origami structures have been widely explored in robotics due to their many potential advantages. Origami robots can be very compact, as well as cheap and efficient to produce. In particular, they can be constructed in a flat format using modern manufacturing techniques. Rotational motion is essential for robotics, and a variety of origami rotational joints have been proposed in the literature. However, few of these are even approximately flat-foldable. One potential enabler of flat origami rotational joints is the inclusion of lightweight pneumatic pouches which actuate the origami’s folds;however, pouch actuators only enable a relatively small amount of rotational displacement. The previously proposed Four-Vertex Origami is a flat-foldable structure which provides an angular multiplier for a pouch actuator, but suffers from a degenerate state. This paper presents a novel rigid origami, the Self-Lock Origami, which eliminates this degeneracy by slightly relaxing the assumption of flat-foldability. This joint is analysed in terms of a trade-off between the angular multiplier and the mechanical advantage. Furthermore, the Self-Lock Origami is a modular joint which can be connected to similar or different joints to produce complex movements for various applications;three different manipulator designs are introduced as a proof of concept. Copyright © 2023, The Authors. All rights reserved.

关键词： Manipulators

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Cavity-Enhanced 2D Quantum Emitters Deterministically Integrated with Silicon Nitride Microresonators

Cavity-Enhanced 2D Quantum Emitters Deterministically Integr...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Parto, Kamyar Azzam, Shaimaa Lewis, Nicholas Patel, Sahil Umezawa, Sammy Watanabe, Kenji Taniguchi, Takashi Moody, Galan Department of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States California Nanosystems Institute University of California Santa BarbaraCA93105 United States Research Center for Functional Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan International Center for Materials Nanoarchitectures National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan

ISBN: (纸本)9781957171258

A new platform for position and polarization aligned 2D single-photon emitter integration within background-free silicon-nitride microring resonator is presented. Emitters achieve a cavity-enhanced coupling efficiency of 46±4%, exceeding previous demonstration by over an order-of-magnitude. © Optica Publishing Group 2023 © 2023 The Author(s)

关键词： Silicon nitride

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Effect of impurity and radiation defects on the scattering of normal and fluctuation carriers in YBa2Cu3O7–δ and Y1–zPrzBa2Cu3O7–δ single crystals

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Fizika Nizkikh Temperatur 2024年第11期50卷 1128-1138页

作者： Azarenkov, N.A. Khadzhai, G.Ya. Gevorkyan, E.S. Goulatis, I. Chroneos, A. Feher, A. Komisarov, A.O. Vragov, O.Yu. Kovrigin, V.A. Vovk, R.V. V. N. Karazin Kharkiv National University Kharkiv61022 Ukraine Institute of Solid State Physics Materials Science and Technologies NSC-KIPT Kharkiv61108 Ukraine Ukrainian State University of Railway Transport Kharkiv61050 Ukraine Casimir Pulaski Radom University Radom Poland Department of Electrical and Computer Engineering University of Thessaly Volos38333 Greece Department of Materials Imperial College London LondonSW7 2BP United Kingdom Centre of Low Temperature Physics Faculty of Science P. J. Safarik University Kosice041 54 Slovakia

The effect of medium fluences (from 1019 е/cm2 to 1020 е/cm2) of fast electron irradiation or the change in the praseodymium concentration in the range 0.0 ≤ z ≤ 0.5 on the excess conductivity of optimally oxygen-doped YBa2Cu3O7–δ single crystals has been investigated. Irradiation leads to the appearance of a significant number of defects that cause a decrease in anisotropy, an appreciable increase in phonon scattering, reduction of Tc, and broadening of the superconducting transition. Under the conditions specified, the temperature dependence of electrical resistivity is approximated with high accuracy by the charge carriers’ scattering on defects and phonons, and fluctuating conductivity in the Lawrence–Doniach model. It was determined that at fluences 0 ≤ Ф ≤ 6.5·1019 е/cm2, the value of the transverse coherence length ξс(0) increases with an increase of Ф by about three times or more than four times as the content of praseodymium in the sample increases to z ≈ 0.42. In both cases, the 2D–3D crossover point shifts upward in temperature. In contrast to the case of irradiation with low fluences (Ф ≤ 1019 е/cm2) or doping with praseodymium up to concentrations z ≤ 0.39, irradiation with medium fluences and doping with praseodymium at higher concentrations leads to a nonmonotonic dependence of the transverse coherence length ξс(0) on the irradiation fluence, with characteristic maxima at Ф ~ (7–8)·1019 е/cm2 or z ≈ 0.42, which may be due to the general suppression of the superconducting characteristics. © N. A. Azarenkov, G. Ya. Khadzhai,·E. S. Gevorkyan, I. Goulatis, A. Chroneos, A. Feher, A. O. Komisarov, O. Yu. Vragov, V. A. Kovrigin, and R. V. Vovk, 2024.

关键词： Phonon scattering

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Microwave-Based Complementary Split-Ring Resonator for the Detection of Variations in Aqueous Media

Microwave-Based Complementary Split-Ring Resonator for the D...

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Microelectronics Technology and Devices (SBMicro)

作者： Reinaldo Velásquez Diego Tami Gilberto Medeiros-Ribeiro Cássio G. Rego Jhonattan C. Ramirez Graduate Program in Electrical Engineering UFMG Brazil Institute of Technological Sciences UNIFEI Brazil Department of Computer Science UFMG Brazil Department of Electronics Engineering UFMG Brazil

In this paper, we demonstrated a highly sensitive microwave-based resonator sensor capable of detecting variations in an aqueous medium of up to 0.94 mg/dL. In the presented device, the intrinsic resonant response (resonant amplitude, resonant frequency, and quality factor) is capacitively perturbed in reaction to the sample presence. To achieve higher sensitivity, the sample under testing generally is placed on the resonator surface, where the electric field is highly concentrated at the operating frequency. Thus, demonstrating excellent results in terms of sensitivity and reproducibility.

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Broadband Acoustic Meta-structures Fabricated by Additive Manufacturing

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材料导报 2020年第11期34卷 11001-11002页

作者： JIA Xiao HONG Minghui YAN Ming Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3117583Singapore

Acoustic meta-structures,because of their flexible and unprecedented proprieties,such as negative dynamic density,negative bulk modulus and refractive index of negative,near-zero or extremely large value,enable new applications to manipulate sound waves propagation and control energy transfer[1].Over the past decades,the development of acoustic meta-structures has not only provided advanced functionalities but also tackled the problem of limited device ***,the meta-structures are explored based on two different kinds of unit cells:locally resonant and non-resonant *** acoustic components with the Helmholtz resonator[2],membrane structure[3]or other structured composites were investigated to realize local *** this circumstance,their resonant behaviors are sensitive to the frequency,where the desirable properties can be obtained in the vicinities of the resonant ***,they suffer from the inherent“narrow band”,resulting in large sound attenuation when the frequency is off *** the non-resonant meta-structures,the unit cell with convoluted waveguides such as space-coiling sound channels[4],labyrinthine[5]or tapered structures[6]were proposed to achieve unusual effective properties over a wider ***,the impedance mismatch between the meta-structure and the environmental fluid leads to a large energy reflection and sound attenuation inside the waveguides due to thermo-viscous loss in the narrow sound ***,it is still an open problem in both industry and academia to optimize the broadband performance of the meta-structure devices.

关键词： narrow sound sizes

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