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CLEO: science and Innovations, S and I 2022

作者： Zeng, Junjie Sander, Michelle Y. Department of Electrical and Computer Engineering BU Photonics Center Boston University BostonMA02215 United States Division of Materials Science and Engineering Boston University BrooklineMA02446 United States Department of Biomedical Engineering Boston University BostonMA02215 United States

Real-time explosion dynamics in a transition chaotic state and a dual-wavelength vector soliton state in a thulium-doped linear fiber laser are analyzed with real-time pulse measurements. © Optica Publishing Grou... 详细信息

ISBN: (纸本)9781557528209

关键词： Thulium

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A probabilistic reduced-order modeling framework for patient-specific cardio-mechanical analysis

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computers in Biology and Medicine 2025年 190卷 109983-109983页

作者： Willems, Robin Förster, Peter Schöps, Sebastian van der Sluis, Olaf Verhoosel, Clemens V. Department of Mechanical Engineering Energy Technology and Fluid Dynamics Eindhoven University of Technology Netherlands Department of Biomedical Engineering Cardiovascular Biomechanics Eindhoven University of Technology Netherlands Department of Mathematics and Computer Science Computational Science Eindhoven University of Technology Netherlands Department of Mechanical Engineering Mechanics of Materials Eindhoven University of Technology Netherlands Department of Electrical Engineering and Information Technology Computational Electromagnetics Technical University of Darmstadt Germany

Cardio-mechanical models can be used to support clinical decision-making. Unfortunately, the substantial computational effort involved in many cardiac models hinders their application in the clinic, despite the fact that they may provide valuable information. In this work, we present a probabilistic reduced-order modeling (ROM) framework to dramatically reduce the computational effort of such models while providing a credibility interval. In the online stage, a fast-to-evaluate generalized one-fiber model is considered. This generalized one-fiber model incorporates correction factors to emulate patient-specific attributes, such as local geometry variations. In the offline stage, Bayesian inference is used to calibrate these correction factors on training data generated using a full-order isogeometric cardiac model (FOM). A Gaussian process is used in the online stage to predict the correction factors for geometries that are not in the training data. The proposed framework is demonstrated using two examples. The first example considers idealized left-ventricle geometries, for which the behavior of the ROM framework can be studied in detail. In the second example, the ROM framework is applied to scan-based geometries, based on which the application of the ROM framework in the clinical setting is discussed. The results for the two examples convey that the ROM framework can provide accurate online predictions, provided that adequate FOM training data is available. The uncertainty bands provided by the ROM framework give insight into the trustworthiness of its results. Large uncertainty bands can be considered as an indicator for the further population of the training data set. © 2025 The Authors

关键词： Cardiac mechanics Reduced-order modeling Gaussian processes Bayesian inference Patient-specific analysis One-fiber model Isogeometric analysis

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Ge2Sb2Se4Te Phase Change Material Monolithic Platform for Integrated Photonics

Ge2Sb2Se4Te Phase Change Material Monolithic Platform for In...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Acharjee, Niloy Sun, Hongyi Ghosh, Siddhartha Ríos Ocampo, Carlos A. Institute for Research in Electronics & Applied Physics University of Maryland College ParkMD20742 United States Department of Electrical & Computer Engineering University of Maryland College ParkMD20742 United States Department of Materials Science & Engineering University of Maryland College ParkMD20742 United States Space Systems - Northrop Grumman 1 Space Park Blvd Redondo BeachCA90278 United States

ISBN: (纸本)9781957171395

We demonstrate a monolithic Ge2Sb2Se4Te platform for tunable photonic integrated circuits. We fabricated and measured various on-chip components, including waveguides with preliminary 55.7±3.65 dB/cm propagation loss. Refractive index tuning is demonstrated via post-fabrication localized crystallization. © Optica Publishing Group 2024 © 2024 The Author(s)

关键词： System-on-chip

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Seafloor Imaging Maps by Incorporating Side Scan Sonar Technology on Hybrid Autonomous Underwater Glider

Seafloor Imaging Maps by Incorporating Side Scan Sonar Techn...

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International Seminar on Research of Information Technology and Intelligent Systems (ISRITI)

作者： Ardian Budi Kusuma Atmaja Egi Muhammad Idris Hidayat Bambang Riyanto Trilaksono Simon Siregar Natsir Habibullah School of Electrical Engineering and Informatics Institut Teknologi Bandung Bandung Indonesia Department Computer Engineering Faculty of Applied Science Doctoral Program of Electrical Engineering Institut Teknologi Bandung Telkom University

This research aims to construct a two-dimensional image to represent an underwater geometry map with a Side Scan Sonar (SSS) mounted on a Hybrid Autonomous Underwater Glider (HAUG). Building the underwater map has two stages of the process. The first stage is preprocessing which includes Time-varying gains (TVG), slant range correction, and ground range correction. The second is HAUG navigation, the movement of HAUG orientation to the angle and distance of SSS readings and plotting the geometry of the grid map. With these two stages, a two-dimensional grid map will be formed. Meanwhile, the 3D plot utilizes slant range and ground range correction to obtain the surface height of the bottom of the pool. From the experiments conducted to conduct mapping in the pool, two-dimensional and three-dimensional visual forms of the pool floor and pool walls were produced. The results of the estimated measurement of the width of the pool obtained 14.05 meters and the height of the pool 3.199 meters with an SSS beam angle of 58 degrees.

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Gate-Tunable Resonant Tunneling in a Dual-Gated Twist-Controlled Double Monolayer Graphene-hBN Heterostructure

Gate-Tunable Resonant Tunneling in a Dual-Gated Twist-Contro...

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2022 Device Research Conference, DRC 2022

作者： Lin, Kenneth Prasad, Nitin Burg, G. William Watanabe, Kenji Taniguchi, Takashi Tutuc, Emanuel University of Texas at Austin Department of Electrical and Computer Engineering AustinTX78758 United States National Institute of Materials Science Research Center for Functional Materials Ibaraki305-0044 Japan National Institute of Materials Science International Center for Materials Nanoarchitectonics Ibaraki305-0044 Japan

ISBN: (数字)9781665498838

ISBN: (纸本)9781665498838

Van der Waals heterostructures of two-dimensional (2D) crystals are a versatile platform for electron physics and device applications. An emerging device that departs markedly from the field-effect transistor, and has shown potential applications for logic [1], memory [2], and security [3] is the interlayer resonant tunneling field-effect transistor (ITFET), consisting of two independently contacted 2D layers separated by a tunnel barrier. In such devices, energy and momentum conservation during tunneling leads to interlayer voltage-current characteristics with gate-tunable negative differential resistance (NDR). ITFET demonstrations include single-gated double monolayer or double bilayer graphene separated by hexagonal boron-nitride (hBN) [4]-[5], dual-gated double bilayer graphene separated by WSe2 [6], and dual-gated double WSe2 separated by hBN barriers [7]. Here, we present a combined experimental and modeling study of dual-gated double monolayer graphene-hBN heterostructures, where the crystals axes of the two graphene electrodes are rotationally aligned, thereby enabling resonant tunneling and gate-tunable NDR. © 2022 IEEE.

关键词： Monolayers

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Ge2Sb2Se4Te Phase Change Material Monolithic Platform for Integrated Photonics

Ge2Sb2Se4Te Phase Change Material Monolithic Platform for In...

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CLEO: science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

关键词： Photonic integrated circuits

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Digital Technology in Health Education Trend Mapping through Bibliometrics Analysis 4

Digital Technology in Health Education Trend Mapping through...

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4th International Conference on Informatics, Multimedia, Cyber and Information System, ICIMCIS 2022

作者： Maulana, Fairuz Iqbal Lestari, Dian Widartha, Vandha Pradwiyasma Haidar, Nirwana Dirgantara, Wahyu School of Computer Science Bina Nusantara University Computer Science Department Jakarta11480 Indonesia Airlangga University Faculty of Medicine Surabaya60132 Indonesia Telkom University Information System of Industrial Engineering Faculty Bandung Indonesia University of Madura Informatics Engineering Study Program Pamekasan Indonesia University of Merdeka Malang Department of Electrical Engineering Malang Indonesia

ISBN: (纸本)9781665473279

This study examines the mapping of research data on digital technology in the field of health education using bibliometric analysis method. Data was collected by identifying keywords in the Scopus database and sorting them out to sort the studies from the last 10 years (2012-2021). Through this step, a total of 1482 documents were obtained (articles, journals, proceedings, books, and others). The data is then processed using the VOSViewer instrument to obtain a visualization of the mapping analysis. This study also analyzes the network types of authors and co-authors through the VOSViewer instrument. The result of this study indicates that the most document types published within ten years are Articles (66.5%), Review (22.9%), Conference Paper (4.2%), and others. The most studied subjects are Medicine (55.7%), Nursing (9.0%), Health Professions (8.2%), Social sciences (7.8%), engineering (3.9%), computer science (2.6%), Environmental science (2.6%), Biochemistry-Genetics and Molecular Biology (2.2%), Psychology (1.6%), and Dentistry (1.3%). This study offers a written communication process and the nature and direction of developing descriptive means of counting and analyzing the various phases of communication as well as recognizing the authorship and direction of its symptoms in documents on the subject of digital technology in the health sector. © 2022 IEEE.

关键词： Mapping

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Frequency Scaling Millimeter Wave Acoustic Resonators using Ion Beam Trimmed Lithium Niobate

Frequency Scaling Millimeter Wave Acoustic Resonators using ...

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IEEE International Frequency Control Symposium

作者： Vakhtang Chulukhadze Kenny Huynh Jack Kramer Michael Liao Sinwoo Cho Lezli Matto Omar A. Barrera Can Cui Mark S. Goorsky Ruochen Lu Department of Electrical and Computer Engineering The University of Texas at Austin Austin TX USA Department of Materials Science & Engineering University of California Los Angeles CA USA

SummaryThis paper reports a method of frequency scaling millimeter wave thin-film lithium niobate (LiNbO 3 ) acoustic resonators using ion beam assisted Argon gas cluster trimming whilst maintaining a high figure of merit (FoM) and averting ultra-thin-film fabrication difficulties. A transferred 100 nm thick 128° Y-cut LiNbO 3 thin film is trimmed to a thickness of 75 nm. Consequently, a 24.4 GHz first-order antisymmetric mode (A1) resonator with a high k 2 of 34.3%, a Q of 54, and an FoM of 18.5 is presented. The quality of the film was maintained during the trimming process, proven by material-level analysis, and exhibited a similar f•Q product compared with resonators fabricated using the original film. These results show a viable and less complex path toward further frequency scaling acoustic devices.

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Metal-organic framework derived Mn0.2Zn0.8Se/C amalgamated with nitrogen-doped graphene hydrogel for antioxidant trolox detection in food, environmental, and biological samples

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Chemical engineering Journal 2024年 496卷

作者： Ashokrao Jagtap, Akash Sakthivel, Rajalakshmi Kubendhiran, Subbiramaniyan Lin, Lu-Yin Kannan Ramaraj, Sayee Liu, Xinke Pattappan, Dhanaprabhu Hsu-Wei Lai, Yi-Ting Tung, Ching-Wei Chung, Ren-Jei Taipei Taiwan PG& Research Department of Chemistry Thiagarajar College Tamilnadu Madurai India College of Materials Science and Engineering Chinese Engineering and Research Institute of Microelectronics Shenzhen University Shenzhen China Department of Electrical and Computer Engineering National University of Singapore Singapore Department of Materials Engineering Ming Chi University of Technology New Taipei City Taiwan Taipei Taiwan

Determining the optimum level of trolox, an antioxidant, is crucial, as excessive consumption can harm human health. This study proposes a highly sensitive electrode material, manganese zinc selenide with carbon (Mn0.2Zn0.8Se/C) decorated on a nitrogen-doped graphene hydrogel (NGH) for trolox detection. The Mn–ZIF-8-derived Mn0.2Zn0.8Se/C was prepared via a simple selenization process, and the NGH@Mn0.2Zn0.8Se/C composite was prepared via sonication. Structural, morphological, and spectroscopic analyses of the prepared NGH@Mn0.2Zn0.8Se/C composite material were performed. This sensing platform is cost-effective, and its rapid preparation time renders it highly effective. The synergistic effect between NGH and the Mn0.2Zn0.8Se/C composite resulted in enhanced electrochemical performance, with a lower Rct value than that of the control materials. The proposed sensor exhibited a good linear range of 0.01–103.79 μM with a lower detection limit of 0.08 μM. Real-time monitoring confirmed the reliability of trolox for detecting food, environmental, and biological samples. © 2024 Elsevier B.V.

关键词： Graphene

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Optimizing Different Methods of Fabricating 3D Printed UV Blocking Sheets for Solar Cells

Optimizing Different Methods of Fabricating 3D Printed UV Bl...

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Renewable Energy Technologies and Modern Communications Systems: Future and Challenges, Conference on

作者： Amjad Fawzi Alhindi Lujain Khalid Baawad Fahad Allam Nazek Elatab Rabab R. Bahabry Smart Advanced Memory Devices and Applications (SAMA) Laboratory Electrical and Computer Engineering Computer Electrical Mathematical Science and Engineering King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia Materials Science and Engineering Department King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia Department of Physical Sciences University of Jeddah (UJ) College of Science Jeddah Saudi Arabia

ISBN: (数字)9798331519445

ISBN: (纸本)9798331519452

This study investigates the fabrication of innovative UV-blocking sheets that effectively transmit visible light while simultaneously obstructing harmful ultraviolet (UV) radiation, utilizing Cerium Oxide (CeO2) and Zinc Oxide (ZnO) nanoparticles as UV-blocking agents. Three distinct fabrication methods were explored: The Powder Method, where nanoparticles were incorporated directly into polydimethylsiloxane (PDMS); the Ball milling Mixture method, which involved mixing nanoparticles through ball milling; and the Solvent-Based Mixture method, where nanoparticles were dissolved, mixed, and dried; before incorporation into PDMS. Samples were produced using a 3D printing technique, which is Direct Ink Writing (DIW) and characterized for their optical properties via UV-Vis spectroscopy. The results indicated CeO2 demonstrated superior UV-blocking capabilities (a maximum blockage of ~99%) compared to ZnO, while maintaining high transmittance for visible light (a maximum of ~90%). Notably, the solvent-based method exhibited better results than the ball milling method; however, the powder method had the best results. Therefore, this investigation offers a promising solution for solar panel protection that aligns with Saudi Arabia's Vision 2030 energy objectives. The relentless exposure of devices, particularly solar cells, to harmful UV radiation poses a formidable challenge and leads to annual degradation rates of between -0.8% and -4.9%, besides other factors. These findings underscore the critical importance of developing effective UV-blocking solutions.

关键词： Nanoparticles Powders II-VI semiconductor materials Photovoltaic cells Ink Ball milling Writing Zinc oxide Three-dimensional printing Substrates

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