Article
Robotics
Hojung Choi, Mark R. Cutkosky, Andrew A. Stanley
Summary: This paper presents an integrated sensor and actuator for soft haptic devices that can estimate contact force, location, and shape using a multi-headed neural network. The sensor uses channels cast into a multi-layer silicone bubble to measure strain and external contact. The technology enables closed-loop control for future soft pneumatic devices.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2023)
Review
Computer Science, Information Systems
Adilzhan Adilkhanov, Matteo Rubagotti, Zhanat Kappassov
Summary: This article provides an overview of newly developed haptic devices over the past decade, describing their technology and application domains. It categorizes the devices based on wearability level and provides detailed descriptions of their structures, applications, and other characteristics.
Article
Chemistry, Multidisciplinary
Saurabh Khuje, Abdullah Islam, Jian Yu, Shenqiang Ren
Summary: This article presents a flexible and wireless multimodal sensor for temperature, pressure, and flow monitoring, fabricated using low-temperature additive manufacturing of copper nanoplates on elastic polyurethane substrates. The sensor exhibits high sensitivity, capable of detecting small pressures and velocities, and features a self-powered, battery-free system with superior real-time sensing performance.
Article
Chemistry, Physical
Han Fang, Jiajie Guo, Hao Wu
Summary: Virtual reality/augmented reality (VR/AR) is widely used, and wearable triboelectric devices (TENGs) are emerging as promising solutions to enhance the immersive experience by providing haptic stimuli. TENGs offer flexibility, lightweight, self-power, and high sensitivity, and can be used as pressure, rotation, and strain sensors for tactile and kinesthetic actions in VR/AR systems.
Article
Materials Science, Multidisciplinary
Jingjing Guo, Ce Shang, Shuo Gao, Yongbiao Zhang, Bo Fu, Lijun Xu
Summary: A flexible optical tactile sensor is developed using a plasmonic optical fiber made from gold nanoparticles and elastomers. It can accurately sense contact force and convert mechanical stimuli into interpretable light signals with low hysteresis and adjustable sensitivity. The sensor is capable of real-time monitoring of blood pressure, respiration, and tactile mapping of hand motions.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Chemistry, Multidisciplinary
Chang Ma, Ming-Guo Ma, Chuanling Si, Xing-Xiang Ji, Pengbo Wan
Summary: Flexible and wearable devices have great potential in portable mobile electronics and human motion monitoring. MXene, a novel 2D nanomaterial, shows superior properties that make it a promising candidate for flexible and wearable devices. Current research is focused on developing flexible MXene-based composites with various functions and structures, particularly in applications like sensors, supercapacitors, and electromagnetic interference shielding materials.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Polymer Science
Hao Huang, Jinyao Zhong, Yongliang Ye, Renxu Wu, Bin Luo, Honglong Ning, Tian Qiu, Dongxiang Luo, Rihui Yao, Junbiao Peng
Summary: This paper summarizes the flexible pressure sensors based on material microstructure designs in recent years. The paper mainly discusses the processing methods and characteristics of various sensors with different microstructures, and compares their advantages, disadvantages, and application scenarios. The main application fields of flexible pressure sensors based on microstructure designs are listed, and their future development and challenges are discussed.
Article
Engineering, Electrical & Electronic
M. Ntagios, Ravinder Dahiya
Summary: This work presents a soft, flexible, and low-cost capacitive pressure-sensitive insole developed using resource-efficient single-step 3D printing method. The insole exhibits excellent pressure response and sensitivity, making it a promising solution for applications such as gait analysis and robotics.
IEEE SENSORS JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Qin-Teng Lai, Xin-Hua Zhao, Qi-Jun Sun, Zhenhua Tang, Xin-Gui Tang, Vellaisamy A. L. Roy
Summary: Flexible tactile sensors have gained significant research interest due to their wide applications in physiological monitoring, diagnosis, human prosthetics, haptic perception, and human-machine interaction. MXene-based composites, with excellent stretchability and metallic conductivity, have emerged as promising candidates for flexible tactile sensors. This paper introduces the controllable preparation and characterization of MXene, reviews the recent advances in fabrication strategies, operating mechanisms, and device performance of MXene composite-based sensors, and discusses their applications in human motion monitoring, healthcare, prosthetics, and artificial intelligence.
Article
Materials Science, Multidisciplinary
ChiCuong Vu, TranThuyNga Truong, Jooyong Kim
Summary: Flexible electronics, a branch of wearable electronics, has attracted extensive research attention for its wide range of applications. However, signal acquisition, processing, and noise suppression remain challenging. Researchers have developed new materials and geometrical designs to optimize the performance of flexible electronics. This paper selectively reviews the progress in flexible electronic development over the past two years from the perspectives of materials and fractal structures, and analyzes the significance of fractal structures for devices and applications. The challenges and opportunities of fractal designs for future research are also summarized.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Analytical
Guanqun Cao, Jiaqi Jiang, Chen Lu, Daniel Fernandes Gomes, Shan Luo
Summary: Tactile sensing is crucial for robots to perceive the physical properties of objects. However, current tactile sensors have limitations in terms of sensing area and resistance, leading to ineffective and time-consuming assessment processes. To address these issues, we propose a roller-based optical tactile sensor called TouchRoller, which can maintain contact with the assessed surface throughout its motion, enabling efficient and continuous measurement.
Article
Engineering, Electrical & Electronic
Yancheng Wang, Yingtong Lu, Deqing Mei, Lingfeng Zhu
Summary: This article introduces a wearable tactile sensor based on galinstan liquid metal, which can independently sense temperature and contact force simultaneously. The sensor has high sensitivity and can accurately measure contact forces and temperatures during grasping applications.
IEEE SENSORS JOURNAL
(2021)
Review
Chemistry, Multidisciplinary
Soonjae Pyo, Jaeyong Lee, Kyubin Bae, Sangjun Sim, Jongbaeg Kim
Summary: This article summarizes important advances in flexible tactile sensors in recent years, including sensor designs and material configurations to improve key performance parameters such as sensitivity, detection range/linearity, response time/hysteresis, spatial resolution/crosstalk, multidirectional force detection, and insensitivity to other stimuli.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Physical
Haomin Wang, Shuo Li, Haojie Lu, Mengjia Zhu, Huarun Liang, Xunen Wu, Yingying Zhang
Summary: Traditional public health systems lack comprehensive, timely, and efficient medical services. The demand for convenient and comprehensive health monitoring has been growing. The development of flexible and wearable devices using carbon materials has gained wide attention for their potential applications in monitoring and caring for human health. In this review, the latest advances in the design and fabrication of carbon materials for health-related flexible and wearable electronics are discussed. The fabrication strategies, working mechanism, performance, and applications of carbon-based flexible devices, including sensors and conductive wires/electrodes, are reviewed. The integration of multiple carbon-based devices into multifunctional wearable systems is also explored. Challenges and future opportunities in this field are proposed.
Article
Automation & Control Systems
Zhihao Zhu, Yingtian Xu, Waner Lin, Zhixian Hu, Zhuofan Lin, Zhenglong Sun, Zhengchun Peng, Ziya Wang
Summary: This article introduces a new type of tactile sensor, inspired by the sliding tactile perception mode of the human fingertip. The sensor has a soft and cambered configuration, allowing it to rapidly and accurately recognize the 3D surface features of objects, including grooves as small as 500 μm. The pattern recognition system based on the robot demonstrates the ability to accurately classify a set of mahjong tiles with nearly 100% accuracy, surpassing human tactile perception capabilities.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Nanoscience & Nanotechnology
Biao Zhang, Wang Zhang, Zhiqian Zhang, Yuan-Fang Zhang, Hardik Hingorani, Zhuangjian Liu, Jun Liu, Qi Ge
ACS APPLIED MATERIALS & INTERFACES
(2019)
Editorial Material
Engineering, Multidisciplinary
Zhi-Qian Zhang
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
(2020)
Article
Engineering, Multidisciplinary
Chen Jiang, Zhi-Qian Zhang, Guang-Jun Gao, G. R. Liu
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2019)
Article
Engineering, Marine
B. D. Edmans, D. C. Pham, Z-Q Zhang, T. E. Guo, N. Sridhar, G. Stewart
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2019)
Article
Engineering, Multidisciplinary
Fan Peng, Wei Huang, Y. E. Ma, Z. Q. Zhang, Yao Zhang
Summary: The novel phase field model for brittle fracture, developed based on CS-FEM and considering spectral decomposition, derived second-order stress tensor and fourth-order constitutive tensor, implemented by ABAQUS software, was validated and provided useful suggestions. The proposed method successfully overcomes mesh distortion, with smooth cell number not influencing accuracy, showing advantages over standard FEM in convergence and computing efficiency.
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
(2021)
Article
Chemistry, Physical
Shuai Chen, Jeremy Heiarii Ronald Yune, Zhi-Qian Zhang, Zhigang Liu, N. Sridhar, Linda Yong Ling Wu, Shuyun Chng, Jun Liu
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Mechanics
Fan Peng, Wei Huang, Zhi-Qian Zhang, Tian Fu Guo, Yu E. Ma
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Chemistry, Physical
Zheng Zhang, Debbie Hwee Leng Seng, Ming Lin, Siew Lang Teo, Tzee Luai Meng, Coryl Jing Jun Lee, Zhi-Qian Zhang, Te Ba, Junyan Guo, Kannan Sundaravadivelu, Poh Koon Aw, Jisheng Pan
Summary: This study focuses on the characteristics of Inconel 718 coatings deposited using different spray techniques, and shows that cold spray technology performs well in structural restoration applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Mechanics
Fan Peng, Wei Huang, Zhi-Qian Zhang, Tian Fu Guo, Yu. E. Ma, Yao Zhang
Summary: The study proposes integral models for brittle fracture in the fourth-order phase field model, derives J-, M-, and L-integrals based on the Noether theorem, and verifies the path independence of J- and L-integral models. The numerical implementation demonstrates the effectiveness of J-integral in the phase field and accurately verifies the calculation of J-integral. The research results are significant for evaluating fracture behavior of brittle materials.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
C. D. Reddy, Zhi-Qian Zhang, S. Msolli, Junyan Guo, N. Sridhar
Summary: Through molecular dynamics simulations of a copper/copper system, it is found that when a supersonic metal particle impinges onto a metal substrate, impact induced local melting leads to adhesive bonding at the interface. The bonding mechanisms are identified as a combination of metallurgical, mechanical, and grain boundary interlocking at the interface region, with the formation of metallurgical interlocking never before reported in the literature. Nanotwins and grain refinement in the particle are also very prevalent.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Chemistry, Analytical
Chee Ming Noel Sng, Li Min Camillus Wee, Kum Cheong Tang, King Chien Joe Lee, Qing Hui Wu, Joo Chuan Yeo, Ali Asgar S. Bhagat
Summary: This study introduces a home-based wearable device called EDSEN for quantitative monitoring of penile health. Two sensors are developed to measure penile tumescence and rigidity, and conical models mimicking penile shaft are used for evaluation. The results verify that EDSEN can accurately detect erectile dysfunction within the comfortable confines of the user's home.
Article
Chemistry, Multidisciplinary
Jiaming Qi, Feng Gao, Guanghui Sun, Joo Chuan Yeo, Chwee Teck Lim
Summary: To enhance the realism and immersion of human-computer interaction, novel haptics technologies are developed to bridge the gap between the physical world and digital environment. The HaptGlove, an untethered and lightweight pneumatic glove, allows users to physically interact in a VR environment, providing natural and realistic kinesthetic and cutaneous sensations. Through a user study, significant improvements in VR realism and immersion are observed, with participants achieving 78.9% accuracy in sorting virtual objects of different stiffnesses. Importantly, HaptGlove facilitates VR training, education, entertainment, and socialization.
Proceedings Paper
Engineering, Manufacturing
Sabeur Msolli, Zhi-Qian Zhang, Junyan Guo, Sridhar Narayanaswamy, Reddy Chilla Damodara, Zheng Zhang, Jisheng Pan, Boon Hee Tan, Qizhong Loi
ADVANCED SURFACE ENHANCEMENT, INCASE 2019
(2020)
Article
Chemistry, Physical
Hareesh Godaba, Zhi-Qian Zhang, Ujjaval Gupta, Choon Chiang Foo, Jian Zhu
Article
Physics, Fluids & Plasmas
Yunan Cai, Shuangqiang Wang, Jianhua Lu, Sheng Li, Guiyong Zhang