Article
Chemistry, Analytical
Yiping Huang, Yatong Song, Li Gou, Yuanwen Zou
Summary: Wearable flexible silver electrodes based on cowhide were prepared and tested for their waveform transmission and impedance. The results showed that these electrodes were comparable to standard gel electrodes when the skin is moist enough, and had higher signal-to-noise ratios than the standard electrodes in the standing posture.
Article
Chemistry, Analytical
Younghwan Kang, Sangdong Choi, Chiwan Koo, Yeunho Joung
Summary: This paper presents a silicon-dioxide-coated capacitive electrode system for an ambulatory electrocardiogram (ECG), which simplifies circuit analysis and achieves high-quality ambulatory ECG signals. By optimizing the electrode diameter, optimal ambulatory ECG signals were obtained.
Article
Materials Science, Paper & Wood
Huan Liu, Jingran Quan, Junyao Wang, Qi Hou, Rui Wang, Bowen Cui, Tianhong Lang, Yansong Chen, Hongxu Pan, Jianxin Xu, Hanbo Yang, Lixiang Li, Yahao Liu
Summary: This paper reports a high porosity conductive paper based on bamboo wood mixed fiber materials. The conductive paper has excellent physical properties and electrical signal transmission capacity, making it a possible candidate for flexible electrode applications.
Article
Engineering, Electrical & Electronic
Durmus Umutcan Uguz, Zehra Tugce Canbaz, Christoph Hoog Antink, Markus Lueken, Steffen Leonhardt
Summary: This article proposes a new technique called modulated ECG (mECG) for improving the measurement of capacitive electrocardiogram (cECG) by introducing high-frequency sinusoidal variations in contact pressure. The study shows that the amplitude of the ECG signal can be modulated by the multiplicative interaction between the source signal and the coupling impedance, and the resulting waveform can be merged with the envelope of a carrier wave. The feasibility of this technique is validated through numerical and physical simulations. Factors such as textile type, contact pressure, and modulation frequency influence the mECG measurements, and the mECG amplitudes are found to be significantly lower than those of cECG.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Chemistry, Analytical
Tiancong Zhao, Huichao Zhu, Hangyu Zhang
Summary: In this study, a rapid and straightforward fabrication approach to prototyping flexible capacitive pressure sensors based on porous electrodes is proposed. The sensor exhibits a large working range and high sensitivity, with quick and repeatable responses. It has broad potential for practical applications in health monitoring.
Article
Engineering, Electrical & Electronic
Ting-Wei Wang, Shien-Fong Lin
Summary: This study aimed to develop negative impedance capacitive electrodes to improve the quality of noncontact ECG measurements. Experimentally validated, the negative impedance capacitive electrodes effectively reduced the coupling effect between the skin and measurement electrodes, enhancing the signal-to-noise ratio.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Electrical & Electronic
Meysam Daeichin, Ronald N. Miles, Shahrzad Towfighian
Summary: This study demonstrates the feasibility of obtaining electrical read-out data from a capacitive MEMS accelerometer with a repulsive electrode configuration, allowing for large-stroke vibrations of microstructures without the pull-in failure of conventional accelerometers. The MEMS device has high mechanical sensitivity, with the ability to use large bias voltages for enhanced resolution and tunable frequency range.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Ruiqing Li, Qun Zhou, Yin Bi, Shaojie Cao, Xue Xia, Aolin Yang, Siming Li, Xueliang Xiao
Summary: This paper reviews a large number of research outputs on sensitivity improvement of flexible capacitive pressure sensors and discusses methods and trends for enhancing the sensitivity of pressure sensors.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Engineering, Electrical & Electronic
Yingxi Xie, Lihui Lin, Longsheng Lu, Qinghua Liang, Bole Zhang
Summary: This paper introduces an interfacial capacitive pressure sensor based on a carbon electrode with a micro-pit structure. By improving the electrical performance of the electrode and utilizing the deformation of the micro-pit structure under external stimulus, the performance of the pressure sensor is enhanced. The proposed device exhibits long-term durability, low detection limit, and fast response time, demonstrating great potential applications in healthcare monitoring, motion detection, and tactile sensing.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Yuan Xiao, Hanchun Hu, Dongyuan Guo, Yao Tong, Xinlei Guo, Leipeng Yang
Summary: Smart textiles provide wearers with increased functionality, such as sensing and reaction. However, existing fabric-based flexible sensors have complex preparation processes and low sensitivity. This study reports a method combining microdrop jet technology and liquid phase reduction technology to fabricate fabric-based flexible capacitive sensors. The result shows that the sensor has high sensitivity, fast response, and excellent repeatability, demonstrating its potential for applications in healthcare, electronic skin, etc.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Multidisciplinary
Wendi Gao, Cunlang Liu, Tao Liu, Libo Zhao, Chenying Wang, Adnan Shakoor, Tao Luo, Weixuan Jing, Ping Yang, Qijing Lin, Yongqing He, Tao Dong, Zhuangde Jiang, Dong Sun
Summary: In this paper, a high sensitive area-variant type MEMS capacitive sensor was proposed for nano-indentation measurement. The sensor exhibited high mechanical sensitivity, compact chip size, and the ability to eliminate electrostatic interference, making it suitable for nano-indentation measurement at the sub-nano-Newton level.
Article
Engineering, Electrical & Electronic
Zhongbao Luo, Junping Duan, Hongcheng Xu, Yangyang Wang, Jingwen Liu, Xue Yao, Binzhen Zhang
Summary: The study introduces a new low-cost capacitive sensor with high sensitivity and stability for a wide range of tactile pressures. The sensor, designed with a flexible fabric and nanowire structure, can quickly and accurately monitor the bending movement and pressure of finger joints.
IEEE SENSORS JOURNAL
(2021)
Article
Polymer Science
Huating Tu, Xiaoou Li, Xiangde Lin, Chenhong Lang, Yang Gao
Summary: This study demonstrates a dry electrode for ECG monitoring made by screen printing conductive ink on ordinary polyester fabric. The screen-printed textile electrodes exhibit good electrical and electrochemical properties and excellent ECG signal acquisition performance. Furthermore, they maintain flexibility and durability even after repeated bending and washing cycles, providing favorable support for the design of flexible and wearable electrophysiological sensing platforms.
Article
Materials Science, Characterization & Testing
K. Gomathi, R. Sakthivel, S. Joseph John Marshal, V. G. Pratheep
Summary: This paper presents the application, design, and fabrication process of an accelerometer, achieving certain performance indicators through the optimization of design parameters and experimental verification.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Nanoscience & Nanotechnology
Nabil Shalabi, Kyle Searles, Kenichi Takahata
Summary: Switch mode capacitive pressure sensors are innovative microfabricated devices that convert pressure into electric capacitance signals through mechanical switches. These sensors offer zero power consumption, high sensitivity, and high signal-to-noise ratio. By combining switch leads and touch mode analog capacitive sensing, the sensor achieves significantly improved performance compared to commercial sensors. Moreover, the prototype sensor demonstrates the potential for wireless pressure tracking.
MICROSYSTEMS & NANOENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Bin Yang, Li Jiang
Summary: Tactile and proprioception feedback are crucial for myoelectric hand prostheses control, with a new study proposing a multimodal sensations feedback scheme based on multisite Transcutaneous Electrical Nerve Stimulation (TENS) to improve grasping accuracy and efficiency. The scheme utilizes single electrode stimulation for in-loco tactile sensation and multi-electrode activation for dynamic sensation, enhancing the identification of stimulus and demonstrating improved grasping accuracy and efficiency in prosthetic hand tasks. Additionally, the study highlights the benefits of artificial proprioception feedback in enhancing grasping rapidity and security.
JOURNAL OF BIONIC ENGINEERING
(2023)
Article
Engineering, Chemical
Lingtao Zhu, Jingfeng He, Xin Zhang, Bin Yang, Hao Chen, Linghua Chen, Yake Yao
Summary: The influence of fine particles on the separation of waste printed circuit boards by vibrated fluidized bed was investigated in this study. The results showed that an increase in fine particles significantly reduced the metal recovery. The stability of the bed and the separation performance were negatively affected by the adhesion behavior of fine particles. However, pre-removal of iron and aluminum proved to be effective in improving the separation performance and increasing the metal recovery.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Bin Yang, Hao Peng, Yun Zhang, Xunzhong Shang, Taosheng Zhou, Jinming Guo
Summary: By employing Li substitution and Al2O3 doping, the thermal stability and depolarization temperature of (K,Na)NbO3 (KNN) piezoelectric ceramics are enhanced, resulting in large piezoelectric responses for potential applications in high temperature environments.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Engineering, Chemical
Yake Yao, Jingfeng He, Bin Yang, Yuemin Zhao, Lingtao Zhu
Summary: The study investigates the particle characteristics and metal distribution during the fine crushing of waste PCBs using a shear crusher. The results show that better crushing efficiency is achieved with a feeding concentration of 183 g/L and crushing time of 60s. The coarse and fine particles of waste PCBs have higher circularity and smaller aspect ratio compared to medium-size particles. The main metal elements are distributed in waste PCBs with different particle sizes, and the total metal content in the coarse crushed products is higher than that in the fine crushed products.
Article
Engineering, Environmental
Linghua Chen, Jingfeng He, Lingtao Zhu, Qingyao Yao, Youbang Sun, Chengjing Guo, Hao Chen, Bin Yang
Summary: Due to the environmental hazard of waste printed circuit boards (WPCBs), efficient recycling technology of useful metal elements in WPCBs is urgently needed. This study introduces ultrasound into the flotation process to intensify the efficient recovery of metal elements from WPCBs. The results show that ultrasonic treatment improves metal recovery by removing epoxy resin, fine metal particles, and enhancing particle dispersion. It also enhances the flotation performance of non-metallic components, leading to a significant increase in total metal recovery and recovery of specific metals from WPCBs.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Energy & Fuels
Jingfeng He, Shibo Huang, Hao Chen, Lingtao Zhu, Chengjing Guo, Xin He, Bin Yang
Summary: Triboelectric separation technology has been widely used in resource recovery, particularly in coal cleaning, mineral separation, and secondary resource recycling. This review systematically summarizes the research progress of triboelectric separation in mineral processing, including particle pretreatment, charged process intensification, separation process intensification, and its application in coal and mineral separation. Effective strategies and new explorations are proposed for the challenges and problems faced by efficient triboelectric separation. This review provides detailed information for the research status of triboelectric separation and offers vital insights for further improvement and development of efficient triboelectric separation technology.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Energy & Fuels
Jingfeng He, Qingyao Yao, Mingming Zhang, Bin Yang, Lingtao Zhu, Hao Chen, Xin Zhang
Summary: The integration of drying and separation for lignite was achieved by introducing hot airflow and impeller into the gas-solid fluidized bed. The study provides guidance for efficient beneficiation of lignite resources with high moisture content.
Article
Chemistry, Physical
Xiufeng Gong, Jin Yao, Bin Yang, Jun Guo, Haoran Sun, Wanzhong Yin
Summary: This study focused on the basic research of flotation separation of dolomite from brucite using guar gum (GG) as a selective regulator. The flotation tests showed that the use of GG inhibited the floating of dolomite but did not affect the floatability of brucite. Contact-angle measurements and zeta-potential measurements confirmed the difference in floatability between dolomite and brucite after the action of GG. Infrared-spectrum analysis and X-ray photoelectron spectroscopy detection provided further evidence of the interaction between GG and the mineral surfaces.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Xiufeng Gong, Jin Yao, Bin Yang, Zhanglei Zhu, Jun Guo, Wanzhong Yin, Yafeng Fu, Yulian Wang
Summary: This study investigated the selective inhibition characteristics and mechanism of the environmentally friendly and highly effective inhibitor, sodium alginate (SA), on dolomite in the flotation separation of brucite and dolomite. The results showed that an SA dosage of 8 mg/L could achieve a 77.92% difference in floatability between brucite and dolomite, and the flotation effect was verified using the selectivity index.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Bin Yang, Lingtao Zhu, Jingfeng He, Yafeng Fu, Wanzhong Yin
Summary: Pentaethoxylated tallow amine (PTA) was introduced as a selective collector for separating siderite from hornblende for the first time. The results showed that PTA strongly collected hornblende but not siderite, leading to enhanced differences in flotation performance. The adsorption measurements revealed that hornblende adsorbed more PTA than siderite, increasing the hydrophobicity of hornblende. The analysis of zeta potential and FTIR confirmed that the strong adsorption of PTA on hornblende was due to hydrogen bonding and electrostatic attraction. The use of PTA as a collector achieved effective separation of hornblende from siderite.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiufeng Gong, Jin Yao, Bin Yang, Yafeng Fu, Yulian Wang, Wanzhong Yin
Summary: This study investigates the selective adsorption of (1-hydroxyethylidene) bis-phosphonic acid tetrasodium salt (HEDP-4Na) on a calcite surface and its impact on brucite separation. The results show that HEDP-4Na selectively inhibits calcite, achieving a single-mineral floating difference of 73.79% between brucite and calcite. It is found that HEDP-4Na significantly reduces the contact angle of calcite in the sodium dodecyl sulfonate (SDS) system but has little effect on the contact angle of brucite. The adsorption of HEDP-4Na interferes with SDS adsorption on the calcite surface, while it has little effect on SDS adsorption on the brucite surface.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Metallurgy & Metallurgical Engineering
Keqiang Chen, Wanzhong Yin, Yazhuo Ding, Yang Yang, Weiran Zuo, Bin Yang
Summary: More efficient liberation of valuable minerals from gangue is highly beneficial to the comminution process and downstream beneficiation processes. However, the impact of particle-bed breakage on liberation compared to traditional grinding remains controversial. This study compared the liberation performance of iron oxide minerals using two different breakage methods (particle-bed breakage and ball mill grinding). The results showed that particle-bed breakage only slightly improved the liberation of iron oxide minerals, with a maximum difference of 5% in the proportion of liberated minerals. Overall, the difference in liberation distribution between the two breakage methods was not statistically significant in most size/composition classes.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2023)
Article
Metallurgy & Metallurgical Engineering
Xiu-feng Gong, Jin Yao, Bin Yang, Wan-zhong Yin, Ya-feng Fu, Yu-lian Wang
Summary: In this study, flotation separation of dolomite and brucite was achieved using TH as the inhibitor. The selective adsorption of TH increased the wettability and charge of dolomite, interfering with SDS adsorption and enhancing the flotation separation of dolomite and brucite.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Engineering, Environmental
Xiufeng Gong, Jin Yao, Bin Yang, Wanzhong Yin, Jun Guo, Ningbo Song, Yulian Wang, Haoran Sun
Summary: In this study, we used diammonium hydrogen phosphate (DHP) to regulate the flotation separation of brucite and calcite. DHP was found to have activation and inhibition effects on calcite and brucite flotation, respectively, resulting in a significant recovery difference between the two minerals. Further analysis showed that DHP affects the contact angle and zeta potential of calcite and brucite surfaces, leading to differences in their floatability. In addition, infrared and X-ray photoelectron spectroscopy tests revealed the adsorption behavior of DHP on the mineral surfaces, confirming its stronger affinity for calcite than brucite.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Huimin Qiao, Fangping Zhuo, Zhen Liu, Jinxing Wang, Jeongdae Seo, Chenxi Wang, Jinho Kang, Bin Yang, Yunseok Kim
Summary: This study utilizes piezoresponse force microscopy (PFM) to investigate the local electromechanical behavior and distribution of ferrielectric (FiE) and antiferroelectric (AFE) phases in materials. The results demonstrate the significance of PFM as an analytical tool for characterizing materials and their phase coexistence behavior.
