Article
Chemistry, Physical
Yuxin Chen, Zhirong Deng, Ri Ouyang, Renhao Zheng, Zhiqiang Jiang, Hua Bai, Hao Xue
Summary: A newly developed 3D printing method allows for the preparation of stretchable elastic fibers with a coaxial core-sheath structure, providing good conductivity and insulation properties suitable for smart textiles. Large-scale customized manufacturing of stretchable smart textiles is now achievable.
Article
Chemistry, Multidisciplinary
Guilherme Costa, Pedro Alhais Lopes, Afsaneh L. Sanati, Andre F. Silva, Marta Calisto Freitas, Anibal T. de Almeida, Mahmoud Tavakoli
Summary: This study introduces a 3D-printed Ag-Ga battery through digital printing of sinter-free composites, resulting in faster printing, self-feeding, and self-aggregation mechanism. The battery exhibits record-breaking areal capacity and excellent stretchability, making it a promising alternative to Ag-Zn batteries. Additionally, printing sensors and batteries on biomonitoring e-textiles allows for simultaneous monitoring of electrocardiography, body temperature, and respiration.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Lingyun Wang, Yu Wang, Su Yang, Xiaoming Tao, Yunlong Zi, Walid A. Daoud
Summary: This study introduces a solvent-free ionic elastomer (IE) with high transparency, stretchability, ionic conductivity, adhesiveness, thermal stability, and negligible mechanical hysteresis, suitable for multifunctional stretchable electronics. The IE-based robust strain and temperature sensors demonstrate good linear sensitivity and long-term stability.
Article
Chemistry, Analytical
Kwan-Young Joung, Sung-Yong Kim, Inpil Kang, Sung-Ho Cho
Summary: The study focused on the development of a 3D-printed load cell using a nanocarbon composite strain sensor and a 3D printing process. The miniature load cell was successfully fabricated using a low-cost LCD-based 3D printer and UV resin. Performance evaluation showed that the PLC had reasonable results in terms of non-linearity, repeatability, and hysteresis after calibration, but exhibited relative inferiorities due to the hyper-elastic characteristics of polymer sensors.
Article
Optics
Felipe Oliveira Barino, Renato Luiz Faraco-Filho, Deivid Campos, Alexandre Bessa dos Santos
Summary: The study introduces a cost-effective tactile sensor based on arc-induced LPG embedded in PLA, fabricated using FDM. The sensor offers high force sensitivity, high linearity, and customization options, making it lightweight, compact, and low-cost.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Composites
Niu Jiang, Hua Li, Dengwen Hu, Youquan Xu, Yuexin Hu, Yutian Zhu, Xiangyan Han, Guiyan Zhao, Jianwen Chen, Xiaohua Chang, Man Xi, Qiang Yuan
Summary: This study presents a simple route to design multifunctional sensors for strain and temperature sensing by combining the electrospun technique and ultrasonication anchoring technique. The fabricated TPU/IL sensor exhibits fast response time, wide sensing range, and excellent durability for strain sensing, as well as high accuracy for temperature sensing.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Benjaporn Narupai, Jitkanya Wong, Eva Sanchez-Rexach, Julian Smith-Jones, Vy Chau Thao Le, Naroa Sadaba, Haritz Sardon, Alshakim Nelson
Summary: Stretchable conductive materials have gained significant attention for their potential applications in various fields. This study focuses on using vat photopolymerization to fabricate 3D printed stretchable strain sensors. By optimizing the printability of ionic liquid resins and using Sudan-I as a photoabsorber, complex 3D objects capable of detecting real-time changes in current under compression, stretching, and bending loads were created. The self-adhesive nature of these materials allows for the repair of mechanically damaged structures, enhancing their applicability for on-demand production of customized devices.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Mechanical
Matic Arh, Janko Slavic, Miha Boltezar
Summary: Fused-filament fabrication technology has been used for manufacturing various sensors, but faces challenges such as anisotropic behavior and size limitations. This paper focused on the design principles and experimental results of a single-axis accelerometer, providing a foundation for further optimization of the prototype sensor.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Chihiro Okutani, Tomoyuki Yokota, Hiroki Miyazako, Takao Someya
Summary: This study designs self-maintaining spring structures with soft materials and develops soft spring-type electronic devices with little hysteresis. These devices exhibit high stretchability and durability, measuring strain and pressure accurately.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Nanoscience & Nanotechnology
Zhongming Li, Bin Li, Boqi Chen, Jin Zhang, Yang Li
Summary: The study focuses on the structural design of three-dimensional flexible wearable sensors using conductive polymer composites, manufacturing honeycomb-shaped flexible resistive pressure sensors with three different support structures using 3D printing technology, and demonstrating their excellent piezoresistive performance and potential applications in intelligent wearable devices.
Article
Chemistry, Multidisciplinary
Kento Yamagishi, Terry Ching, Nicole Chian, Martin Tan, Wenshen Zhou, Shao Ying Huang, Michinao Hashimoto
Summary: This study presents a method for fabricating microfluidic electronics with 3D interconnected networks using DIW-based 3D printing. The integration of electronic elements and injection of liquid metal enables the creation of flexible and stretchable liquid metal antenna coils in support-free microchannels.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Marco Fortunato, Luca Pacitto, Nicola Pesce, Alessio Tamburrano
Summary: Researchers have developed piezoresistive pressure sensors using 3D porous flexible open-cell foams, which can be used for health monitoring, illness prevention, and human motion detection. By controlling the shape and size of the foam through additive manufacturing, the sensors' piezoresistive response can be adjusted by varying the concentration of the infiltrated graphene nanoplatelets. The optimized grid-based structure sensors exhibit the highest sensitivity for pressures below 10 kPa.
Article
Chemistry, Multidisciplinary
Chao Zhang, Huanxi Zheng, Jing Sun, Yongsen Zhou, Wanghuai Xu, Yuhang Dai, Jiaying Mo, Zuankai Wang
Summary: A fast photocurable, solid-state conductive ionoelastomer (SCIE) has been developed for high-resolution 3D printing of arbitrary architectures. The printed building blocks possess high-resolution architectures, good Young's modulus, stretchability, excellent conductivity tolerance in a wide range of temperatures, as well as fine elasticity and antifatigue ability even after long-term loading-unloading cycles. Additionally, the printed building blocks can be programmed into 3D flexible tactile sensors with significantly higher sensitivity than their bulky counterparts.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Analytical
Teemu Salo, Donato Di Vito, Aki Halme, Jukka Vanhala
Summary: The addition of long carbon staple fibers in a stretchable thermoplastic polyurethane (TPU) matrix improves the system's mechanical and electrical properties, as shown by single pull-up tests and cyclic tensile tests. Different thicknesses of carbon fiber cloth (CFC) layers exhibit varying electrical and mechanical properties.
Article
Instruments & Instrumentation
Thassyo Pinto, Claudia Chen, Cody Pinger, Xiaobo Tan
Summary: The study introduces a rapid-manufacturing technique using a PolyJet 3D printer to create soft microfluidic substrates embedded with liquid metals for fabricating stretchable conductors and pressure sensors. This novel method allows for simultaneous 3D printing of multiple spiral-shaped soft pressure sensors in minutes. Experimental results demonstrate that the 3D-printed microfluidic pressure sensors are robust and capable of withstanding high pressures.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Manufacturing
Md Omar Faruk Emon, Faez Alkadi, Daryl George Philip, Da-Hye Kim, Kyung-Chang Lee, Jae-Won Choi
ADDITIVE MANUFACTURING
(2019)
Article
Engineering, Manufacturing
Faez Alkadi, Kyung-Chang Lee, Abdullateef H. Bashiri, Jae-Won Choi
ADDITIVE MANUFACTURING
(2020)
Article
Engineering, Manufacturing
Aslan Alamdari, Jeongwoo Lee, Myoeum Kim, Md Omar Faruk Emon, Ali Dhinojwala, Jae-Won Choi
ADDITIVE MANUFACTURING
(2020)
Article
Engineering, Biomedical
Md Omar Faruk Emon, Alex Russell, Gopal Nadkarni, Jae-Won Choi
Summary: The report introduces a real-time visualization aid called NeuroGlove for neuropathy patients, which provides a visual light scale to understand grasp strength. It is a simple and inexpensive solution that offers potential customization in design, material, and geometry through additive manufacturing technology.
JOURNAL OF MEDICAL DEVICES-TRANSACTIONS OF THE ASME
(2021)
Article
Computer Science, Information Systems
Hyeong-Jun Kim, Kyung-Chang Lee, Man-Ho Kim, Suk Lee
Summary: This paper proposes a scheduling method using genetic algorithm to optimize time-critical traffic in automotive Ethernet networks. The method aims to minimize end-to-end delay, jitter, and bandwidth utilization by generating a transmission schedule, considering these indicators simultaneously.
Article
Computer Science, Information Systems
Kimin Jeong, Kyung-Chang Lee
Summary: A smart insole device has been developed to analyze gait patterns in real time and evaluate exercise function. The device uses sensors and IoT technology to monitor human activity and classify gait patterns through a WiFi network.
Article
Robotics
Omar Faruk Emon, Hao Sun, Ahadur Rahim, Jae-Won Choi
Summary: A new solid-state force sensor is proposed that can measure both normal and shear forces at the same time. The sensor is made of an ionic liquid/polymer network and uses separate IL-based polymer membranes to detect normal and shear forces. The sensor's performance was optimized by investigating different material compositions for different sensor layers. Results show that the sensor can reliably measure both normal and shear forces, and the sensitivity can be modulated by varying the material composition or geometric configuration.
Article
Engineering, Manufacturing
Jeong-Uk Kim, Roh-Won Kim, Sung-Ryul Kim, Hyun-Hee Kim, Kyung-Chang Lee
Summary: Difficult-to-cut materials used in aerospace, automobile, and medical industries are actively researched. The monitoring of nozzle condition is crucial for machining quality.
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING
(2022)
Article
Engineering, Manufacturing
Omar Faruk Emon, Faez Alkadi, Mazen Kiki, Jae-Won Choi
Summary: This study presents an adaptive 3D printing method for printing electronics on a curved surface. By generating curvilinear extrusion paths, a curved sensor was successfully fabricated on a fingertip model, and its performance was evaluated.
ADDITIVE MANUFACTURING LETTERS
(2022)
Article
Engineering, Manufacturing
Savas Dilibal, Haydar Sahin, Josiah Owusu Danquah, Md Omar Faruk Emon, Jae-Won Choi
Summary: In this study, a monoblock soft robotic gripper with three geometrically gradient fingers and soft sensors was designed and additively manufactured for the power grasping of spherical objects. The monoblock design reduces component assembly, with the gripper designed for bending through pneumatic pressure. The experimental results show that the gripper successfully performed real-time grasp detection for power grasping.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Myoeum Kim, Daryl George Philip, Md. Omar Faruk Emon, Jae-Won Choi
Summary: This study investigated the effects of hardness on the sensitivity and load capacity of 3D printed pressure sensors, aiming to provide guidelines for selecting hardness for different sensor applications. Sensors with lower hardness showed better sensitivity and smaller errors but lower load capacity, while sensors with higher hardness did not provide reliable outputs under load conditions.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Kimin Jeong, Eunhye Shin, Hyunhee Kim, Kyung-Chang Lee
2019 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY (ICIT)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Hye-Yeon Ryu, Young-Hun Song, Kyung-Chang Lee
2019 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY (ICIT)
(2019)