Article
Materials Science, Multidisciplinary
Ping Ren, Jingyan Dong
Summary: This study investigates the use of EHD printing technology to achieve multi-layer reliable vertical metal interconnections for the direct fabrication of integrated electronic devices with metallic conductivity, flexibility, and stretchability.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Review
Chemistry, Multidisciplinary
Gang Ge, Qian Wang, Yi-Zhou Zhang, Husam N. Alshareef, Xiaochen Dong
Summary: In the development of flexible electronics, particularly hydrogel-based stretchable ionotronic devices, researchers are exploring the potential of 3D printing for its excellent patterning capability and design complexity. Despite facing challenges in balancing printability, conductivity, and stretchability, this review offers guidelines on utilizing 3D printing to create high-performance devices, focusing on material considerations and printing quality. Various 3D printing methods for hydrogels and design principles are discussed, along with the potential applications in flexible sensors, soft robots, and other devices.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Polymer Science
Wenwen Niu, Xiaokong Liu
Summary: This article provides a systematic summary of different types of stretchable ionic conductors, including their design, fabrication, properties, and applications. The advantages and limitations of these conductors are discussed, and possible challenges for their further development and practical applications are presented.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Xiangnan He, Jianxiang Cheng, Zhenqing Li, Haitao Ye, Zechu Sun, Qingjiang Liu, Honggeng Li, Rong Wang, Qi Ge
Summary: Highly stretchable and transparent ionic conducting materials with unique working mechanism and performance are developed for electronic devices. A novel stretchable ultraviolet curable ICEs (SUV-ICEs) for 3D printing approach is reported to fabricate complex 3D flexible electronics. The developed SUV-ICEs exhibit high stretchability and thermal stability, and can be covalently bonded with other dielectric elastomers to create functional devices.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Analytical
Prosenjit Kumar Ghosh, Prabha Sundaravadivel
Summary: The development of electronic material and sensing technology has allowed for research on liquid metal-based soft sensors. These sensors have a wide range of applications in soft robotics, smart prosthetics, and human-machine interfaces, providing precise and sensitive monitoring. They can be easily integrated into soft robotic applications due to their flexibility and deformability, which traditional sensors lack. Liquid-metal-based sensors have been extensively used in biomedical, agricultural, and underwater applications. In this research, a novel soft sensor embedded with liquid metal Galinstan alloy in microfluidic channel arrays was designed and fabricated. The sensing performances, including stretchability, linearity, and durability, were measured and characterized, showing excellent stability, reliability, and promising sensitivity to different pressures and conditions.
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
Materials Science, Composites
Zhenhua Wang, Jingze Wang, Jizhe Wang, Boyu Zhang, Yuan Yao, Nanjia Zhou, Weicheng Cui
Summary: In this study, a novel 3D printing technology called Sequential Multimaterial Embedded 3D Printing (SME3P) is used to fabricate soft composite actuators with complex external geometries and internal structures. Various composite sensors and actuators are successfully fabricated to demonstrate the feasibility of SME3P for real-life applications.
COMPOSITES COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Yuntian Wang, Zhixun Wang, Zhe Wang, Ting Xiong, Perry Ping Shum, Lei Wei
Summary: The integration of functional fibers into wearable devices by traditional methods is commonly completed in weaving. A new post-weaving method of integrating fiber devices into textiles is needed to address the challenge of incorporating functional fiber into ready-made garments without tearing down the clothing and re-weaving. A 3D printing method is presented to simultaneously fabricate and integrate highly stretchable conductive fiber into ready-made garments with designed patterns, showing the potential applications in wearable electronics.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Christian J. Pless, Shayla Nikzad, Irene Papiano, Samson Gnanadass, Firoz B. Kadumudi, Alireza Dolatshahi-Pirouz, Carsten Eckhart Thomsen, Johan U. Lind
Summary: Soft and stretchable electronic materials are used for sensors in monitoring human health. Conductive inks based on thermoplastic elastomers with different additives are developed and compared for their electrical and mechanical properties. Multi-material micro-extrusion 3D printing is established to directly deposit these inks onto stretchable fabrics for fabricating soft bio-sensors.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Heng Zhu, Xiaocheng Hu, Binhong Liu, Zhe Chen, Shaoxing Qu
Summary: The digital light processing three-dimensional (3D) printing method can be used to fabricate 3D functional devices with strong adhesion interfaces and desired functionalities, bridging the submillimeter-scale device resolution to centimeter-scale object size. This approach opens up new avenues for next-generation multifunctional stretchable electronics.
ACS APPLIED MATERIALS & INTERFACES
(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
Chemistry, Multidisciplinary
Shuqi Liu, Song Chen, Wei Shi, Zefei Peng, Kaiying Luo, Shuting Xing, Jiatian Li, Zunfeng Liu, Lan Liu
Summary: A novel elastomer substrate with self-healing properties for the preparation of flexible electrodes has been introduced. The substrate exhibits high mechanical strength and stretchability, as well as excellent scratch resistance and self-healing capabilities at 60 degrees Celsius.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Guangyong Li, Fankai Sun, Husheng Chen, Yuan Jin, Aibing Zhang, Jianke Du
Summary: The article introduces a new method for preparing LM wires and applying them to achieve stretchable conductors and capacitors with high stretchability and precision. In addition, the proposed wearable devices and biomedical sensors offer potential assistance and applications in the healthcare field.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Fulvia Del Duca, Lukas Hiendlmeier, Reem Al Fata, George Al Boustani, Inola Kopic, Hu Peng, Beatrice De Chiara, Marta Nikic, Francisco Zurita, Tetsuhiko Teshima, Bernhard Wolfrum
Summary: This work presents the fabrication of stretchable origami parylene-C electrodes using 3D printed molds. By 3D printing the molds, the designed stretchability directions of the electrodes can be fully controlled. This technique enables the production of electrodes with specific stretchability directions in a rapid prototyping approach.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Environmental
Qirui Wu, Songjiu Han, Jundong Zhu, Anbang Chen, Jiayu Zhang, Zhen Yan, Jiantao Liu, Jianren Huang, Xiaoxiang Yang, Lunhui Guan
Summary: In this study, solid-state conductive ionogels (SCIg) composed of long-chain copolymer networks were designed and prepared. The SCIg showed outstanding properties, including high tensile strength, conductivity, self-healing efficiency, and UV curable 3D printability. These SCIgs were further applied in the development of resistance-type sensors, capacitive-type sensors, and multifunctional electronic skins, showing great potential in the fields of electronic skin, physiological signal detection, and human-machine interface.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Automation & Control Systems
Younghun Song, Jeehun Park, Kyung-Chang Lee, Suk Lee
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2019)
Article
Engineering, Electrical & Electronic
Md Omar Faruk Emon, Jeongwoo Lee, U. Hyeok Choi, Da-Hye Kim, Kyung-Chang Lee, Jae-Won Choi
IEEE SENSORS JOURNAL
(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)
Article
Engineering, Manufacturing
Przemyslaw Golebiewski, Pawel Wienclaw, Jaroslaw Cimek, Pawel Socha, Dariusz Pysz, Adam Filipkowski, Grzegorz Stepniewski, Olga Czerwinska, Ireneusz Kujawa, Ryszard Stepien, Rafal Kasztelanic, Andrzej Burgs, Ryszard Buczynski
Summary: We report the development of a 3D printing process for producing soft glass optical fibers. The process involves direct printing using a miniaturized crucible and depositing straight horizontally-oriented lines to replace traditional assembly techniques. Experimental results demonstrate good performance of the printed photonic crystal fiber preform.
ADDITIVE MANUFACTURING
(2024)
