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Asia-Pacific Conference on Intelligent Robot Systems (ACIRS)

作者： Muhammad Ilhamdi Rusydi Elita Amrina Yoan Winata Salisa 'Asyarina Ramadhani Riko Nofendra Electrical Engineering Department Engineering Faculty Program of Engineer Professional Education Graduate School Universitas Andalas Padang Indonesia Industrial Engineering Department Engineering Faculty Program of Engineer Professional Education Graduate School Universitas Andalas Padang Indonesia Electrical Engineering Department Engineering Faculty Universitas Andalas Padang Indonesia

Brain-Computer Interface (BCI) is a technique that uses real-time brain impulses to connect with and control external devices. BCI provides a new method for controlling external devices by translating brain signals into computer commands, facilitating the daily lives of people with disabilities and enhancing their ability to exhibit expected behavior. A Brain-Computer Interface (BCI) system based on Electroencephalography (EEG) was built to control the robotic arm. The EEG signals utilized included both eyes blinking, the right eye, the left eye, and the jaw contraction. EEG data were recorded from seven healthy subjects. The threshold approach is used to classify EEG signals, with the feature employed being the amplitude of the EEG signal. The highest threshold value for the blinking signal was 0.6 mV with an accuracy of 97.9%, while the best threshold value for jaw contraction was 0.4 mV with an accuracy of 93.34 percent. The healthy, inexperienced participants took part in system testing. The total results of testing each robot movement yielded an overall success rate of 84.52 percent. Therefore, it was determined that the system could facilitate the operation of the length robot even if the user lacked prior experience with EEG-based systems.

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Microwave-dependent quantum transport characteristics in near pinched-off GaN/AlGaN field-effect transistors

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Physical Review B 2024年第3期110卷 035305-035305页

作者： Motoya Shinozaki Takaya Abe Kazuma Matsumura Takumi Aizawa Takeshi Kumasaka Tomohiro Otsuka WPI Advanced Institute for Materials Research Research Institute of Electrical Communication Department of Electronic Engineering Graduate School of Engineering Center for Science and Innovation in Spintronics RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan

Defects in semiconductors, traditionally seen as detrimental to electronic device performance, have emerged as potential assets in quantum technologies due to their unique quantum properties. This paper investigates the microwave-induced current and the interaction between defects and quantum electron transport in GaN/AlGaN field-effect transistors near the pinch-off state and discusses the observed Fano resonances at low temperatures. We observe the resonance spectra and their dependence on gate voltage and magnetic fields. To explain the observed behavior, we construct the possible scenario as a Fano interferometer with finite width. Our findings reveal the potential of semiconductor defects to contribute to the development of quantum information processing, providing their role to key components in next-generation quantum devices.

关键词： Defects Field-effect transistors Nanostructures Quantum dots Semiconductors Microwave techniques

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Nitrogen doping effect on InGaZnO-based artificial synapse for implementing reservoir computing and SVHN dataset pattern recognition

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Nano Energy 2024年第PartA期129卷

作者： Mahata, Chandreswar So, Hyojin Ju, Dongyeol Ismail, Muhammad Kim, Sungjoon Hsu, Chih-Chieh Park, Kyungchul Kim, Sungjun Division of Electronics and Electrical Engineering Dongguk University Seoul04620 Korea Republic of Department of AI Semiconductor Engineering Korea University Sejong30019 Korea Republic of Graduate School of Engineering Science and Technology and the Graduate School of Electronic Engineering National Yunlin University of Science and Technology Douliu64002 Taiwan Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of

This work focused on plasma-induced nitrogen-doped indium gallium zinc oxide (InGaZnO:N) based resistive switching devices. Nitrogen atoms in the InGaZnO:N can reduce the randomness of oxygen vacancy formation and conducting filaments, resulting in stable and uniform resistive switching (RS) and artificial synaptic performance. Optimized nitrogen and oxygen ion concentration improves the redox reaction depending on their reactivity with InGaZnO due to optimal VO concentration in the switching layer confirmed by X-ray photoelectron spectroscopic (XPS) analysis. Device-to-device promising RS variability with ION/IOFF ratio >10 confirmed with multiple devices with low average SET/RESET voltages of 1.35 /[sbnd]1.5 V. Pulse-induced short-term memory learning characteristics with linear weight-update, including synaptic function of short-term potentiation (STP), paired-pulse facilitation (PPF), spike rate-dependent plasticity (SRDP), and experience dependent synaptic weight modification are successfully emulated and demonstrated. The optimization of InGaZnO:N-based memristors provides efficient temporal information processing capability, serving as the physical reservoir computing system, demonstrated through experimental pattern recognition. The potentiaiton/depression of conductance was used for on-chip learning with the street view house numbers (SVHN) dataset. This study suggests that moderate nitrogen-doped ITO/InGaZnO:N/ITO memristors possess potential as synaptic devices for neuromorphic systems. © 2024 Elsevier Ltd

关键词： Memristors

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Direct Teaching/Playback Method for the Contact Task of a Six-DOF Manipulator Using a Parallel-Wire-Type Teaching Device with a Remote Center Compliance Device 23

Direct Teaching/Playback Method for the Contact Task of a Si...

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23rd International Conference on Control, Automation and Systems, ICCAS 2023

作者： Okochi, Tatsuya Sakai, Masao Morita, Yoshifumi Graduate School of Engineering Nagoya Institute of Technology Electrical and Mechanical Engineering Program Department of Engineering Gokiso-cho Aichi Nagoya466-8555 Japan Industrial Research Center Aichi Center for Industry and Science Technology Onda-cho 1-157-1 Aichi Kariya-shi448-0013 Japan Nagoya Institute of Technology Department of Electrical and Mechanical Engineering Gokiso-cho Showa-ku Aichi Nagoya466-8555 Japan

ISBN: (纸本)9788993215274

This study proposes a direct teaching method for the task of pressing an end effector attached to a robot manipulator against a workpiece with a constant force. When performing contact tasks, such as deburring or polishing using a manipulator, a passive compliance is required for the end effector to suppress excessive contact force and impact. Therefore, we developed an end effector that combines a 'parallel wire-type teaching device,' which enables direct teaching, and a compliance device. In the case of pressing a workpiece with a constant force, after teaching the robot's trajectory to trace the edge of the workpiece, the amount of pressing can be calculated from the stiffness of the end effector and the desired pressing force;the robot's trajectory can be edited to teach contact tasks. An experiment was conducted to press a straight trajectory with a constant force as the target value and evaluate the accuracy of force teaching. © 2023 ICROS.

关键词： End effectors

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Optoretinography reveals comprehensive nanoscopic dynamics of the outer retina in rodents 34

Optoretinography reveals comprehensive nanoscopic dynamics o...

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Ophthalmic Technologies XXXIV 2024

作者： Tan, Bingyao Li, Huakun Zhuo, Yueming Han, Le Mupparapu, Rajeshkumar Barathi, Veluchamy Amutha Palanker, Daniel Schmetterer, Leopold Ling, Tong Program Singapore School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore Singapore Eye Research Institute Singapore National Eye Centre Singapore Hansen Experimental Physics Laboratory Stanford University StanfordCA94305 United States Department of Electrical Engineering Stanford University StanfordCA94305 United States Institute of Molecular and Clinical Ophthalmology Basel Switzerland School of Electrical and Electronic Engineering Nanyang Technological University Singapore

ISBN: (纸本)9781510669079

Small animals, such as rodents, are attractive options for investigating the intrinsic process of retinal degeneration. In this study, we used phase-sensitive optical coherence tomography to explore the comprehensive dynamics of rats’ outer retinas in response to visual stimuli. By calculating the temporal phase difference between different outer retinal bands, we revealed highly reproducible retinal dynamics, on the order of tens of nanometers, related to different parts of the outer retina. Our approach may pave the way for preclinical optoretinography study in small animals, facilitating clinical translations for the early detection of neurodegenerative diseases. © 2024 SPIE.

关键词： Dynamics

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Wrist-Forearm Differential Kinematics Using Monocular Vision Capture 46th

Wrist-Forearm Differential Kinematics Using Monocular Vision...

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46th Mexican Conference on Biomedical engineering, CNIB 2023

作者： Pescador-Salas, Alejandro Rosales-Huie, Juan Pablo Martinez-Peon, Dulce Olguín-Díaz, Ernesto Faculty of Graduate Studies National Technological Institute of Mexico Nuevo León Guadalupe67170 Mexico Department of Electrical and Electronic Engineering National Technological Institute of Mexico Nuevo León Guadalupe67170 Mexico Coahuila Ramos Arizpe25900 Mexico

ISBN: (纸本)9783031469350

Each year the number of patients requiring motor rehabilitation for the upper limb, particularly for the wrist and forearm, increases, due to a loss in their fine motor skills. Although physiotherapists assist them, the progress evaluation remains subjective. Modern technology can be used to create solutions to provide a quantitative description allowing objective metrics evaluations for motor recovery of the patients, which typically yield complex and expensive solutions. This paper presents a methodology to obtain the differential kinematic trajectories of the wrist and forearm performed by a patient, through video capture of its movement, using the open-source MediaPipe library. The angles of the wrist and forearm are obtained through inverse kinematics analysis using hand-specific landmarks. A second-order filter estimates the angular trajectories for position, velocity, and acceleration. The study was performed with basic movements used in rehabilitation: adduction-abduction, flexion-extension, pronation-supination, and complex movements such as circumduction with the participation of six healthy patients. The results show that it is possible to obtain estimates of differential wrist trajectories. The applications of this methodology in the fields of biomechanics and rehabilitation are discussed. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Patient rehabilitation

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Mxene/Polydimethylsiloxane (PDMS) Based Implantable and Flexible Bioelectrodes for Neural Sensing

Mxene/Polydimethylsiloxane (PDMS) Based Implantable and Flex...

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2023 Advances in Science and engineering Technology International Conferences, ASET 2023

作者： Baz Khan, Kashif Rast Al-Othman, Amani Al-Nashash, Hasan Al-Sayah, Mohammad American University of Sharjah Biomedical Engineering Graduate Program Sharjah United Arab Emirates American University of Sharjah Department of Chemical and Biological Engineering Sharjah United Arab Emirates American University of Sharjah Department of Electrical Engineering Sharjah United Arab Emirates American University of Sharjah Chemistry and Environmental Sciences Sharjah United Arab Emirates

ISBN: (纸本)9781665454742

Research applications of neural sensing and muscle stimulation have been advanced by the development of bioelectrodes that are biocompatible, flexible and long lasting. The existing metallic made bioelectrodes exhibit extremely high electrochemical resistances that would interfere with the neural-electrode bridge and suffer from mechanical and immunological mismatch. Novel, flexible, implantable bioelectrodes based on MXenes (Ti3C2) and Polydimethylsiloxane (PDMS) composite are proposed. Mxenes possess the advantage of having metallic ultra-conductive transition metals consisting of large groups of carbides, nitrides, or carbonitrides, while PDMS has inherent biostability, flexibility and biocompatibility. In the current research, PDMS has been used as the supporting matrix for conductive fillers such as PMMA, PEDOT, and Mxenes. A series of characterization techniques were performed such as Electrochemical Impedance Spectroscopy (EIS), Cyclic Voltammetry (CV) and mechanical testing. The average results of triplicate samples exhibited samples' bulk impedance of 0.913 kΩ, an impedance of 1.612 MΩ, at 1 kHz frequency and a conductivity of 1.41x10-4S/cm, charge storage capacity of 0.056 mC/cm2 and Young's modulus of 3.81 MPa. © 2023 IEEE.

关键词： Elastic moduli

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Simulation of IoT-based Pool Water Quality Monitoring System with Node-RED 13

Simulation of IoT-based Pool Water Quality Monitoring System...

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13th IEEE Global Conference on Consumer electronic, GCCE 2024

作者： Hang, Lim Wei Saon, Sharifah Mahamad, Abd Kadir Kadir, Herdawatie Binti Abdul Ahmadon, Mohd Anuaruddin Yamaguchi, Shingo Universiti Tun Hussein Onn Malaysia Faculty of Electrical and Electronic Engineering Johor Batu Pahat Malaysia Universiti Teknologi Petronas Department of Computer and Information Sciences Perak Seri Iskandar Malaysia Yamaguchi University Graduate School of Sciences and Technology for Innovation Japan

ISBN: (纸本)9798350355079

In this study, we present a simulation-based approach to pool water quality monitoring, leveraging Internet of Things (IoT) technology using the Wokwi simulator. The main objective of this research is to ensure the hygiene and safety of swimming pools by monitoring key parameters which are temperature, pH, chlorine levels, and total dissolved solids (TDS). With Node-RED, real-time data received by the ESP32 within the Wokwi simulator is visualized, enabling users to assess the pool's condition at a glance. To enhance user awareness, proactive measures such as Telegram notifications and LED alerts are implemented to indicate deviations from predefined ranges. This research showcases the effectiveness of simulation-based solutions in maintaining optimal water quality standards and underscores the potential of IoT technologies in addressing challenges in aquatic environments. © 2024 IEEE.

关键词： IoT Monitoring system Node-RED Telegram Water quality

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A proposal on dynamic bandwidth allocation for one-dimensionally moving mobile entities

A proposal on dynamic bandwidth allocation for one-dimension...

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International Conference on Information Networking

作者： Yuta Tachikawa Yuki Hatanaka Ryo Murakami Tetsuya Yokotani Hiroshi Minemo Seiji Kozaki Takeshi Suehiro Kenichi Nakura Shigenori Tani Department of Electrical and Electronic Engineering (Graduate School of Engineering) Kanazawa Institute of Technology Ishikawa Japan (department of technology) Department of Electrical and Electronic Engineering Kanazawa Institute of Technology Ishikawa Japan (Graduate School of Science and Technology) Shizuoka University Shizuoka Japan Mitsubishi Electric Corporation (Development Division) Information Technology R&D Center Kanagawa Japan

ISBN: (数字)9798331506940

ISBN: (纸本)9798331506957

Recent years, with the introduction of 5th generation mobile communication networks, bursty traffic and upstream traffic characteristics have changed significantly. The deployment of small cells and passive optical networks for highspeed broadband services are considered. Passive optical network technology can apply to multiplex many small cells. The authors have proposed BCOM as a bandwidth control scheme for uplink traffic and have carried out bandwidth allocation, assuming the case where mobile vehicles pass according to schedule. In this paper, BCOMs evaluate assuming that mobile vehicles do not arrive on schedule.

关键词： Multiplexing Schedules Bandwidth Channel allocation Passive optical networks Broadband communication Resource management Proposals Vehicle dynamics Uplink

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Mobile Phone Detector in Restricted Area 13

Mobile Phone Detector in Restricted Area

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13th IEEE Global Conference on Consumer electronic, GCCE 2024

作者： Ismail, Abdurrahman Ponniran, Asmarashid Choon, Chew Chang Eh Kan, Chessda Uttraphan Ahmadon, Mohd Anuaruddin Yamaguchi, Shingo Universiti Tun Hussein Onn Malaysia Faculty of Electrical and Electronic Engineering Johor Batu Pahat Malaysia Universiti Teknologi Petronas Department of Computer and Information Sciences Perak Seri Iskandar Malaysia Yamaguchi University Graduate School of Sciences and Technology for Innovation Japan

ISBN: (纸本)9798350355079

The proliferation of smartphones has heightened concerns regarding their unauthorized use in restricted areas, posing significant security risks and compromising data integrity. This paper addresses the challenge of detecting unauthorized mobile phone activity in sensitive locations, focusing on examination rooms as a critical case study. It proposes a mobile phone detector system using RF signal detection and an IoT platform for real-time alerts. The system, built with Arduino and an antenna, uses an AD8318 RF power detector to analyse signals from mobile phones. The system successfully detects 4G and 5G signals within a voltage range of 1.2 V to 0.7 V and an effective range of up to 30 cm. It also features real-time alerts via a buzzer and data transmission to the Blynk IoT platform, enhancing security. Tests confirmed the system's accuracy and reliability, though it has limitations such as inconsistent response times and limited detection range. Future improvements will focus on extending the detection range and refining the alert mechanisms for better performance in various environments. © 2024 IEEE.

关键词： Smartphones

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