Article
Engineering, Biomedical
Shang-You Yang, Yuan-Pin Lin
Summary: Wearable low-density dry EEG headsets have broad applications in decoding brain activity and brain-triggered interaction for healthy individuals. However, movement artifacts present challenges to their validity outside laboratory settings. This study explored the effectiveness of hardware and software solutions for low-density and dry EEG recordings in non-tethered settings. Results showed that active-electrode designs effectively corrected movement artifacts for dry electrodes, while the ASR pipeline was compromised by limited electrodes. This suggests that lightweight, minimally obtrusive dry EEG headsets should at least include an active-electrode infrastructure to maintain their validity and applicability in real-world scenarios.
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Ayesha Khan, Amar Jadhav, J. M. Khobragade, Anamika Vitthal Kadam
Summary: This study focuses on the economical synthesis of high-quality graphene materials in large quantities. Reduced graphene oxide (rGO) nanosheets were prepared by anodic exfoliation of graphite in (NH4)(2)S2O8 aqueous solution, with the electrochemical exfoliation mechanism revealing the intercalation of SO4 (-2) and O-2 (-2) into graphite sheets. The as-prepared rGO was characterized by various techniques and exhibited unique properties for electrochemical energy storage, highlighting its potential in large-scale production.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yijing Zhang, Lin Xu, Myrthe van der Ven, Sotir Ouzounov, Mohammed Meftah, Massimo Mischi, Eugenio Cantatore, Pieter Harpe
Summary: This article proposes a front-end amplifier structure with a fast reset scheme for noncontact capacitive electrodes in ECG/heart-rate monitoring applications. The fast-reset amplifier allows for MA recovery prior to saturation, avoiding a long recovery process and signal loss. Experimental results show that the proposed amplifier outperforms the conventional structure in terms of input resistance, noise level, and MA saturation handling ability.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Yanmin Wang, Chong Sun, Hu Zhao, Jinlong Cui, Yongqiang Zhang, Wenxiu He
Summary: Metal sulfides as supercapacitor electrode materials have large theoretical capacity and rich operability, but their unsatisfactory cycle stability and rate performance are challenging problems. Therefore, the effective strategy to solve these problems is the preparation of metal sulfide-based electrode materials with a stable structure, long cycle life, and high-rate performance. In this study, metal sulfides were first crystallized into crosslinked nanosheet and nanotube structures, providing abundant active sites for redox reactions. Further modification of the prepared material by spraying graphene resulted in a more complete hollow structure, enlarged electrochemical reaction sites, and reduced electrolyte transport distance, thereby improving the charge transfer kinetics. The electrode material underwent a self-activation process during the charge-discharge cycle test, transforming it from one equilibrium state to a new equilibrium state. The 2-CSNS@RGO electrode showed a capacitance of 1650.13 C g(-1) at 1 A g(-1) with remarkable cycling of 3000 cycles at 10 A g(-1), retaining 186.1% capacity of the initial value. An asymmetric supercapacitor (2-CSNS@RGO//AC) was prepared using 2-CSNS@RGO as the positive electrode and activated carbon (AC) as the negative electrode, exhibiting an energy density of 88 W h kg(-1) at a power density of 0.8 kW kg(-1) and a capacity retention rate of 131.6% after 30,000 cycles at 10 A g(-1).
DALTON TRANSACTIONS
(2023)
Article
Engineering, Electrical & Electronic
Chanoknan Buaban, Chinnatip Ratametha, Tanachai Limpisawas, Techapon Songthawornpong, Bhirawich Pholpoke, Woradorn Wattanapanitch
Summary: This paper presents the design of a low-power ECG readout system suitable for recording ECG from dry electrodes. By employing a high gain and signal-folding technique, the system minimizes power consumption while maintaining performance.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Linan Guo, Guitao Wu, Qunyi Wang, Tong Li, Bohan Yao, Yongjiu Zou, Minyi Xu
Summary: Pressure sensors are widely used in industrial automatic-control environments, and with the development of IoT technology, the demand for environmental adaptability and reliability of pressure sensors is increasing. Triboelectric pressure sensors, with their self-powered characteristic, are highly sensitive and environmentally adaptable, making them suitable for IoT applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Multidisciplinary
Qinghong Zhai, Jingwen Yang, Wei Quo, Jiaxiao Quo, Hejun Gao, Zexia Li, Peng Wang, Chengchun Tang, Yanming Xue
Summary: This paper presents a novel foam material filled with boron nitride nanosheets, which exhibits excellent mechanical properties and compression-driven triboelectric performance. The study highlights the potential applications of this foam material in various fields.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zetong Chen, Keren Dai, Jiaxiang Chen, Jingting Zhuo, Danna Zhao, Rui Ma, Xujing Zhang, Xubiao Li, Xiaofeng Wang, Guowei Yang, Fang Yi
Summary: Due to their unique advantages, single-electrode triboelectric nanogenerators (SETENGs) have gained attention and have been used in flexible/wearable electronics. However, there is a lack of understanding of SETENGs. This study systematically investigates the influence of the reference electrode on SETENGs' performance and reveals targeted optimization strategies. Theoretical simulations and corresponding experiments are conducted to verify the results. This work provides fundamental guidance for the development of TENGs and the design of new electronic devices.
Article
Behavioral Sciences
Catriona L. Scrivener, Arran T. Reader
Summary: This study investigated the between-subject variability of EEG electrode placement in a simultaneously recorded EEG-fMRI dataset. The results showed that there is significant variation in the electrode positioning even in a fixed cap, with the largest variation observed in parietal and occipital electrodes. Moreover, the brain regions covered by electrode pairs were not always consistent.
BRAIN AND BEHAVIOR
(2022)
Article
Polymer Science
Jia Yang, Xiyu Tian, Jiacheng Fan, Bin Zhang, Zhenyang Li, Shuzheng Liu, Zhichao Xu, Gang Qin, Qiang Chen
Summary: This study proposes a simple method of synthesizing a deep eutectic gel reinforced by multiple hydrogen bonds through hydrogen bond self-crosslinking and metal salt-based deep eutectic solvent replacement. The gel exhibits high transparency, toughness, and strength, quick self-recovery, good self-healing, environmental stability, low temperatures resistance, and low friction. The gel-based nanogenerator and sensor have excellent energy collection and sensing performance even under extreme conditions.
Article
Engineering, Electrical & Electronic
A. Karthikeyan, R. Mariappan
Summary: An innovative investigation of Mn:Co3O4 samples was conducted using diverse characterization methodologies and electrochemical assessments. The results demonstrated excellent electrochemical performance and cycling stability of the Mn:Co3O4 sample.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Polymer Science
Youjie Sheng, Hanling Zhang, Li Ma, Zhenping Wang, Die Hu, Shanwen Zhang
Summary: In this study, a gel foam was prepared by combining hydrophilic silica nanoparticles, water-soluble polymer xanthan gum, fluorocarbon surfactant, and hydrocarbon surfactant. The foaming ability, foam drainage, and rheological behavior of the gel foam were systematically investigated. The results showed that the addition of xanthan gum and silica nanoparticles improved the foam viscoelasticity but had a negative effect on foam stability.
Article
Chemistry, Physical
Onur Demircioglu, Melih Ogeday Cicek, Doga Doganay, Gunay Gazaloglu, Cuneyt Baykal, Simge Cinar, Husnu Emrah Unalan
Summary: This study modifies a commercial buoy and proposes a pendulum-like TENG for ocean wave energy harvesting, utilizing triboelectric materials polyurethane foam and poly (dimethyl siloxane) (PDMS) to efficiently convert wasted surface and underwater waves into electricity, powering marine-based devices without greenhouse emissions.
Article
Chemistry, Multidisciplinary
Panpan Zhang, Wenbin Guo, Zi Hao Guo, Yuan Ma, Lei Gao, Zifeng Cong, Xue Jiao Zhao, Lijie Qiao, Xiong Pu, Zhong Lin Wang
Summary: A dry ion-conducting elastomer with dynamic crosslinking structures has been developed, exhibiting high ionic conductivity, self-healing capability, stretchability, and transparency. Two soft iontronic devices were successfully realized using this new material, showing self-healing and stretchable properties, wide operational temperature range, and excellent stability.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Zhenhuan Zhang, Yang Jie, Jiaqing Zhu, Zongye Zhu, Hong Chen, Qixin Lu, Yuanming Zeng, Xia Cao, Ning Wang, Zhonglin Wang
Summary: The article introduces a clean energy generation technology designed using waste paper as a material, which can efficiently convert mechanical energy into electricity, with the advantages of continuous reuse and quick construction.
Review
Biophysics
A. Mulchrone, M. Shokoueinejad, J. Webster
PHYSIOLOGICAL MEASUREMENT
(2016)
Article
Engineering, Biomedical
Mehdi Shokoueinejad, Rayan Alkashgari, Hisham A. Mosli, Nazeeh Alothmany, Jacob M. Levin, John G. Webster
JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING
(2017)
Article
Engineering, Biomedical
Mehdi Shokoueinejad, Arman Pazouki, Jake Levin, Fa Wang, Chris Fernandez, Samuel Rusk, Icaro dos Santos, Ashley Mulchrone, Jerome Dempsey, John G. Webster
JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING
(2017)
Meeting Abstract
Clinical Neurology
C. Fernandez, S. Rusk, N. Glattard, M. Shokoueinejad
Meeting Abstract
Clinical Neurology
C. Fernandez, S. Rusk, N. Glattard, M. Shokoueinejad
Review
Engineering, Biomedical
Nazeeh Alothmany, Hisham Mosli, Mehdi Shokoueinejad, Rayan Alkashgari, Michelle Chiang, John G. Webster
JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING
(2018)
Meeting Abstract
Clinical Neurology
C. Fernandez, S. Rusk, N. Glattard, B. Hensen, M. Shokoueinejad, S. Creado, J. Hungerford
Meeting Abstract
Clinical Neurology
C. Fernandez, S. Rusk, N. Glattard, B. Hensen, M. Shokoueinejad, S. Creado, J. Hungerford
Review
Chemistry, Analytical
Mehdi Shokoueinejad, Dong-Wook Park, Yei Hwan Jung, Sarah K. Brodnick, Joseph Novello, Aaron Dingle, Kyle I. Swanson, Dong-Hyun Baek, Aaron J. Suminski, Wendell B. Lake, Zhenqiang Ma, Justin Williams
Review
Biophysics
Xuan Zhang, Joshua E. Medow, Bermans J. Iskandar, Fa Wang, Mehdi Shokoueinejad, Joyce Koueik, John G. Webster
PHYSIOLOGICAL MEASUREMENT
(2017)
Review
Biophysics
Mehdi Shokoueinejad, Chris Fernandez, Emily Carroll, Fa Wang, Jake Levin, Sam Rusk, Nick Glattard, Ashley Mulchrone, Xuan Zhang, Ailiang Xie, Mihaela Teodorescu, Jerome Dempsey, John Webster
PHYSIOLOGICAL MEASUREMENT
(2017)