Article
Engineering, Electrical & Electronic
Dacheng Mao, Zheshun Xiong, Matthew Donnelly, Guangyu Xu
Summary: The study introduced a simple fabrication method for high-density, two-color quantum dot-based micro-LED arrays, which can be used for bi-directional optogenetics at the cellular level. The array featured small-sized light spots with high optical power density, along with low crosstalk and fast response.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Xu Sun, Xuan Wang, Pu Guo, Lei Jiang, Liping Heng
Summary: This study reports a copper foam coating with photoelectric synergistic responsive ability, which can directionally control droplet transport behavior under double or synergetic stimulation in complex environments. The anisotropic sliding behavior of droplets can be reversibly controlled by remotely switching on and off the photoelectric field. This work provides insights into creating new types of smart slippery surfaces.
Article
Engineering, Electrical & Electronic
Ton Koonen, Ketemaw Addis Mekonnen, Frans Huijskens, Eduward Tangdiongga
Summary: Abeam-steered Gigabit Ethernet (GbE) bidirectional OWC system with user-hosted automatic self-calibrated alignment of the upstream beams has been designed and realized. The system uses stepper motor translators, miniature retro-reflectors, and a novel self-alignment center-of-gravity (CoG) algorithm. The system achieves good accuracy in upstream beam steering within 200 mu m relative to the center of the upstream receiver's aperture within an incident angle of 10 degrees.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yetian Huang, Haoshuo Chen, Nicolas K. Fontaine, Yuanhang Zhang, Hanzi Huang, Mikael Mazur, Juan Carlos Alvarado-Zacarias, Roland Ryfe, David T. Neilson, Guifang Li, Rodrigo Amezcua-Correa, Joel Carpenter, Yingxiong Song, Min Wang
Summary: This study introduces SDM-associated technologies into optical wireless communications, proposing the use of incoherent and low-coherence spatial modes for reliable optical broadcasting while demonstrating reconfigurable optical beam steering and point-to-multi-point communications. Cost-efficient components like MM-VCSEL and ASE noise source are utilized for generating incoherent and low-coherence spatial modes.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jinsong Sun, Jinxing Cao, Xiaohong Jiang
Summary: In this study, Bi-doped ZnO nanoarray was successfully prepared to enhance the photoelectrochemical performance of ZnO as a photoanode. Analysis showed that when the doping concentration was 5%, the fluorescence intensity was the lowest, corresponding to the lowest carrier recombination rate and the best photoelectric catalytic effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Medicine, Research & Experimental
Liang Zhao, Yingze Ye, Lijuan Gu, Zhihong Jian, Creed M. Stary, Xiaoxing Xiong
Summary: This review discusses the potential functional link between EV-derived microRNAs and GBMAx, proposing that EV-derived microRNAs may serve as a novel regulatory system for GBMAx and a potential therapeutic target for modifying GBMAx in clinical therapy.
JOURNAL OF TRANSLATIONAL MEDICINE
(2021)
Article
Multidisciplinary Sciences
Lily Johnson-Ulrich, Vlad Demartsev, Laurie Johnson, Emma Brown, Ariana Strandburg-Peshkin, Marta B. B. Manser
Summary: Audio playbacks are commonly used in vocal communication research, but their low directionality makes it difficult to control the exposure of the audience to the stimuli. Parametric speakers provide a solution by using ultrasonic carrier waves to transmit directional audible signals. Our field test of a commercial parametric speaker showed that it is highly directional, but it had a significant impact on the acoustic structure of meerkat calls and had difficulty reproducing low frequencies reliably. The playback experiments elicited weakened behavioral responses, indicating the potential importance of social facilitation in initiating mobbing events in meerkats.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Hongyue Kang, Xiaolin Chang, Jelena Misic, Vojislav B. Misic, Junchao Fan, Jing Bai
Summary: This paper investigates a dual-unmanned aerial vehicle (UAV) aided communication system to improve the security of the communication between ground devices and UAVs. By jointly optimizing the UAV trajectory and sender transmit power, the worst-case average secrecy rate is maximized. Experimental results demonstrate that this scheme can enhance the communication security.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Md Habibur Rahman, Mohammad Abrar Shakil Sejan, Seung-Geun Yoo, Min-A Kim, Young-Hwan You, Hyoung-Kyu Song
Summary: This paper proposes a new model for channel estimation and signal detection using deep learning methods, which can directly recover multiuser transmission signals in complex channel environments, showing significant performance improvements compared to traditional methods.
Article
Automation & Control Systems
Jinka Ranganayakulu, Podala Venkata Srihari, Kaki Venkata Rao
Summary: The present study implemented a novel strategy using periodic bi-directional tool rotation (PBTR) with tungsten carbide helical drill to improve the electrochemical discharge machining (ECDM) of hard and brittle materials like borosilicate glass. It was found that PBTR showed better electrolyte supply to the tool tip and resulted in improved material removal rate, depth of machining, and circularity, while decreasing heat-affected zone, radial overcut, and taper of the machined hole.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Xingang Xie, Min Huang, Yue Liu, Qi An
Summary: In this study, a new deep learning network called IE-Bi-LSTM was proposed to accurately predict tool wear. The IE-Bi-LSTM utilizes an informer encoder and bi-directional long short-term memory to capture global connections and extract long feature sequences from multichannel sensors. Compared to CNN and RNN, this model achieves remote feature extraction and parallel computation of long-sequence-dependent features. The effectiveness of the model was demonstrated through experiments using the PHM2010 basic dataset after data augmentation and hyperparameter tweaking.
Article
Physics, Applied
Lingwei Zeng, Fuwang Zhao, Hanfeng Wang, Zhaokun Wang, Waikin Yeung, Yang Liu, Hui Tang
Summary: Clean energy is urgently needed as a solution to the depletion of fossil fuel resources and increasing carbon emissions. The study investigates the flow-induced vibration and energy harvesting performance of a cylinder with attached fins. Four different configurations were tested and compared, and a bi-directional flow-energy harvester was implemented by attaching both windward and leeward fins to the cylinder. The results showed that this harvester achieved higher vibration amplitudes and had a broader velocity range compared to a plain cylinder.
APPLIED PHYSICS LETTERS
(2023)
Article
Robotics
Mohammad Naghavi Zadeh, Martin Garrad, Christian Romero, Andrew Conn, Fabrizio Scarpa, Jonathan Rossiter
Summary: This work introduces a bi-directional compliant smart actuator called RoboHeart, which is driven by dielectrophoretic zipping. It demonstrates high work output and power, and can be applied in object gripping.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Computer Science, Theory & Methods
Severine Affeldt, Lazhar Labiod, Mohamed Nadif
Summary: This paper proposes a co-clustering framework based on a matrix formulation of the vMF model, which can handle text co-clustering more flexibly and incorporate semantic relationships and similarities between words and documents, thus introducing a bidirectional multiplicative regularization to better encapsulate the underlying text data structure. Experimental results demonstrate the superior performance of this approach in terms of clustering results and co-cluster topic coherence compared to baseline and competitive methods.
STATISTICS AND COMPUTING
(2021)
Article
Engineering, Electrical & Electronic
Fei Yuan, Parth Parekh, Yushi Zhou
Summary: This paper presents the principle, design, and analysis of a bi-directional gated ring oscillator (BDGRO) time integrator for time-based signal processing. The time integrator features full compatibility with technology, rapid integration, low power consumption, a virtually unlimited dynamic range, built-in dynamic element matching, and self-digitization. A detailed analysis of the impact of the imperfections of the time integrator including nonlinearity, skew, supply voltage noise, device noise, and metastability-induced gating errors is provided, supported with simulation results. The time integrator is designed in a TSMC 130 nm 1.2 V CMOS technology and analyzed using Virtuoso/Spectre with BSIM3 device models. Time integration is confirmed using simulation results in both time and frequency domains. The time integrator exhibits a clean spectrum without noticeable harmonics and consumes 0.25 mW with a gain of 15.48 dB at 20 MS/s.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Editorial Material
Chemistry, Analytical
Giuseppe Schirripa Spagnolo, Lorenzo Cozzella, Fabio Leccese
Article
Chemistry, Analytical
Enrico Petritoli, Cipriano Bartoletti, Fabio Leccese
Summary: The paper outlines the preliminary studies of an AUV for shallow water, covering the vehicle architecture, design philosophy, an innovative method for increasing longitudinal stability, and simulation of the AUV's behavior based on data from previous hydrodynamic simulations.
Article
Computer Science, Information Systems
Giuseppe Schirripa Spagnolo, Fabio Leccese
Summary: LED signal lights are difficult to design in compliance with regulations due to the relationship between light intensity and temperature. A proposed solution adjusts light intensity based on temperature using the same LEDs as temperature sensors, creating a stable and easy-to-set-up system.
Proceedings Paper
Engineering, Aerospace
Enrico Petritoli, Fabio Leccese
Summary: The paper discusses the increasing presence and miniaturization of INS systems on vehicles, and examines the error budget and evolution of an inertial system over time through simplified navigation equations. It emphasizes the necessity of external correction methods.
2021 IEEE 8TH INTERNATIONAL WORKSHOP ON METROLOGY FOR AEROSPACE (IEEE METROAEROSPACE)
(2021)
Proceedings Paper
Computer Science, Theory & Methods
Enrico Petritoli, Fabio Leccese, Giuseppe Schirripa Spagnolo
Summary: This paper explores a new approach to electronic component reliability tailored for Industry 4.0, using the case study of the NE555 integrated circuit to develop a fresh perspective on reliability for complex systems.
2021 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR INDUSTRY 4.0 & IOT (IEEE METROIND4.0 & IOT)
(2021)
Proceedings Paper
Engineering, Aerospace
Giuseppe Schirripa Spagnolo, Fabio Leccese
Summary: Lithium-ion batteries are crucial in human activities, but manufacturing defects, mismanagement, and lack of knowledge can pose potential dangers. Real-time temperature monitoring can prevent fires and explosions, especially when transporting a large number of devices with lithium batteries in airplane cabins.
2021 IEEE 8TH INTERNATIONAL WORKSHOP ON METROLOGY FOR AEROSPACE (IEEE METROAEROSPACE)
(2021)
Proceedings Paper
Engineering, Aerospace
Giuseppe Schirripa Spagnolo, Fabio Leccese
Summary: Aircraft warning lights are crucial for flight safety, but LEDs used for these lights may not be clearly visible to pilots using night vision goggles. To address this issue, infrared LEDs are added and optoelectronic systems are used to monitor their correct operation.
2021 IEEE 8TH INTERNATIONAL WORKSHOP ON METROLOGY FOR AEROSPACE (IEEE METROAEROSPACE)
(2021)
Article
Remote Sensing
Enrico Petritoli, Fabio Leccese
Summary: The paper begins by examining the necessary requirements for a UAV in the Martian environment, and outlines the architecture of a gyroplane optimized for scientific research and future Mars exploration. Parameters are established to optimize size and performance after a careful trade-off between different vehicles. The project of the Spider gyroplane, methodology for balancing longitudinal masses, and highlighting aerodynamic forces for fluid dynamics simulations are also presented.
Proceedings Paper
Computer Science, Theory & Methods
Enrico Petritoli, Fabio Leccese, Giuseppe Schirripa Spagnolo
2020 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR INDUSTRY 4.0 & IOT (METROIND4.0&IOT)
(2020)
Proceedings Paper
Computer Science, Theory & Methods
Giuseppe Schirripa Spagnolo, Lorenzo Cozzella, Fabio Leccese, Silvia Sangiovanni, Luca Podesta, Emanuele Piuzzi
2020 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR INDUSTRY 4.0 & IOT (METROIND4.0&IOT)
(2020)
Proceedings Paper
Engineering, Aerospace
Enrico Petritoli, Fabio Leccese, Giuseppe Schirripa Spagnolo
2020 IEEE 7TH INTERNATIONAL WORKSHOP ON METROLOGY FOR AEROSPACE (METROAEROSPACE)
(2020)
Proceedings Paper
Engineering, Aerospace
Sabino Giarnetti, Eduardo De Francesco, Ruggero De Francesco, Francesca Nanni, Marco Cagnetti, Fabio Leccese, Enrico Petritoli, Giuseppe Schirripa Spagnolo
2020 IEEE 7TH INTERNATIONAL WORKSHOP ON METROLOGY FOR AEROSPACE (METROAEROSPACE)
(2020)
