Programming electronic skin with diverse skin-like properties

2021 ◽  
Author(s):  
Jinjian Huang ◽  
Ye Liu ◽  
Xiang Chi ◽  
Yungang Jiang ◽  
Ziyan Xu ◽  
...  
Keyword(s):  
Wearable Devices ◽  
Interactive Technology ◽  
Electronic Skin ◽  
Physical Stimuli ◽  
Native Skin

Simulating the comprehensive functions of native skin—and not simply the perception of external physical stimuli—by electronic skin (e-skin) has gathered increasing attention in the development of wearable devices and human-interactive technology.

scholarly journals All-soft multiaxial force sensor based on liquid metal for electronic skin

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Kyuyoung Kim ◽  
Junseong Ahn ◽  
Yongrok Jeong ◽  
Jungrak Choi ◽  
Osman Gul ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Force Sensor ◽  
Wearable Devices ◽  
Microchannel Array ◽  
Electronic Skin ◽  
Microchannel Arrays ◽  
Mechanical Durability ◽  
Physical Stimuli ◽  
Dome Structure ◽  
Simulation Results

AbstractElectronic skin (E-skin) capable of detecting various physical stimuli is required for monitoring external environments accurately. Here, we report an all-soft multiaxial force sensor based on liquid metal microchannel array for electronic skin applications. The proposed sensor is composed of stretchable elastomer and Galinstan, a eutectic gallium-indium alloy, providing a high mechanical flexibility and electro-mechanical durability. Liquid metal microchannel arrays are fabricated in multilayer and positioned along a dome structure to detect multi-directional forces, supported by numerical simulation results. By adjusting the height of the dome, we could control the response of the multiaxial sensor with respect to the deflection. As a demonstration of multiaxial force sensing, we were able to monitor the direction of multidirectional forces using a finger by the response of liquid metal microchannel arrays. This research could be applied to various fields including soft robotics, wearable devices, and smart prosthetics for artificial intelligent skin applications.

A Facile and Rapid Approach to Lotus‐Seedpod‐Structured Electronic Skin for Monitoring Diverse Physical Stimuli

2021 ◽  
pp. 2001084
Author(s):  
Yanhao Huang ◽  
Libo Chen ◽  
Shaodi Zheng ◽  
Xiaotian Wu ◽  
Lei Liu ◽  
...  
Keyword(s):  
Electronic Skin ◽  
Physical Stimuli ◽  
Lotus Seedpod

scholarly journals Review: Sensors for Biosignal/Health Monitoring in Electronic Skin

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2478
Author(s):  
Hyeon Seok Oh ◽  
Chung Hyeon Lee ◽  
Na Kyoung Kim ◽  
Taechang An ◽  
Geon Hwee Kim
Keyword(s):  
High Performance ◽  
Active Component ◽  
Tactile Sensor ◽  
Wearable Devices ◽  
Advanced Technology ◽  
Electronic Skin ◽  
Points Of View ◽  
External Stimuli ◽  
Flexible Component

Skin is the largest sensory organ and receives information from external stimuli. Human body signals have been monitored using wearable devices, which are gradually being replaced by electronic skin (E-skin). We assessed the basic technologies from two points of view: sensing mechanism and material. Firstly, E-skins were fabricated using a tactile sensor. Secondly, E-skin sensors were composed of an active component performing actual functions and a flexible component that served as a substrate. Based on the above fabrication processes, the technologies that need more development were introduced. All of these techniques, which achieve high performance in different ways, are covered briefly in this paper. We expect that patients’ quality of life can be improved by the application of E-skin devices, which represent an applied advanced technology for real-time bio- and health signal monitoring. The advanced E-skins are convenient and suitable to be applied in the fields of medicine, military and environmental monitoring.

Tissue Adhesive Hydrogel Bioelectronics

2021 ◽  
Author(s):  
Shengnan Li ◽  
Yang Cong ◽  
Jun Fu
Keyword(s):  
Mechanical Properties ◽  
Wearable Devices ◽  
Tissue Adhesive ◽  
Electronic Skin ◽  
Biomedical Electronics

Flexible bioelectronics have promising applications in electronic skin, wearable devices, and biomedical electronics etc. Hydrogels have unique advantages for bioelectronics due to the tissue-like mechanical properties and excellent biocompatibility. Particularly,...

scholarly journals Flexible and Transparent Pressure Sensor Based on CNTs Film Microstructure

2021 ◽  
Author(s):  
Liangliang Liu ◽  
Xin Yan
Keyword(s):  
Pressure Sensor ◽  
Production Cost ◽  
Composite Electrode ◽  
Pressure Sensors ◽  
Wearable Devices ◽  
Capacitive Pressure Sensor ◽  
Detection Range ◽  
Electronic Skin ◽  
Film Microstructure ◽  
Flexible Pressure Sensors

Abstract In recent years, capacitive flexible pressure sensors have been widely studied in electronic skin and wearable devices. The traditional capacitive pressure sensor has a higher production cost due to micro-nano machining technology such as lithography. This paper presents a flexible transparent capacitive pressure sensor based on a PDMS/CNT composite electrode, simple, transparent, flexible, and arrays without lithography. The sensitivity of the device has been tested to 0.0018 kpa -1 with a detection range of 0-30 kPa. The sensor is capable of rapidly detecting different pressures and remains stable after 100 load-unload tests.

Advances in Self-Powered Triboelectric Pressure Sensors

2021 ◽  
Author(s):  
Hao Lei ◽  
Yunfeng Chen ◽  
Zhenqiu Gao ◽  
Zhen Wen ◽  
Xuhui Sun
Keyword(s):  
Internet Of Things ◽  
Health Monitoring ◽  
Rapid Development ◽  
Pressure Sensors ◽  
Wearable Devices ◽  
Electronic Skin ◽  
Potential Applications ◽  
Self Powered

Pressure sensors have attracted much attention for their potential applications in health monitoring, wearable devices, electronic skin and smart robots, etc. With the rapid development of Internet of Things, considering...

Tough, Adhesive, Self-healable, and Antibacterial Plant-inspired Hydrogel Based on Pyrogallol-Borax Dynamic Cross-linking

2021 ◽  
Author(s):  
Chao Ma ◽  
Huiwen Pang ◽  
Hongguang Liu ◽  
Qian Yan ◽  
Jianzhang Li ◽  
...  
Keyword(s):  
Antibacterial Properties ◽  
Wearable Devices ◽  
Skin Wound ◽  
Wound Dressings ◽  
Cross Linking ◽  
Self Healing ◽  
Electronic Skin

Multifunctional hydrogels that integrate stretchability, adhesion, self-healing, and antibacterial properties may find use in a variety of fields including electronic skin, wound dressings, and wearable devices; however, traditional hydrogels often...

scholarly journals Flexible screen-printed temperature sensor based on Mn-Co-Ni metal oxide powder filled PVB polymer

2020 ◽  
Author(s):  
Junyi Zhou ◽  
Xuan Chen ◽  
H.M. Zhang ◽  
Aimin Chang ◽  
Ting Liu
Keyword(s):  
Body Temperature ◽  
Metal Oxide ◽  
Human Body ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Polyvinyl Butyral ◽  
Wearable Devices ◽  
Oxide Powders ◽  
Electronic Skin ◽  
Human Body Temperature

Abstract There has recently been renewed interest in wearable devices and electronic skin because of the demand in real-time monitoring of human body temperature. This work developed a flexible paper-based temperature sensor by screen printing technology. The sensing layer is composed of Mn-Co-Ni metal oxide powders filled with Polyvinyl butyral (PVB). The flexible temperature sensor shows extremely high sensitivity (3.14%° C− 1) at human body temperature (25 to 45° C). It also exhibits excellent durability (less than 0.25%) during the long-term aging tests, which indicates that the flexible temperature sensor has great potential in wearable devices and electronic skin.

scholarly journals Flexible Pressure Sensors with a Wide Detection Range Based on Self-Assembled Polystyrene Microspheres

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5194
Author(s):  
Wufan Chen ◽  
Bingwei Wang ◽  
Qianbing Zhu ◽  
Xin Yan
Keyword(s):  
Pressure Sensor ◽  
Pressure Sensors ◽  
Wearable Devices ◽  
Large Area ◽  
Polystyrene Microsphere ◽  
Detection Range ◽  
Electronic Skin ◽  
Self Assembled ◽  
Flexible Pressure Sensors ◽  
Wide Pressure

Flexible pressure sensors are important components of electronic skin and flexible wearable devices. Most existing piezoresistive flexible pressure sensors have obtained high sensitivities, however, they have relatively small pressure detection ranges. Here, we report flexible pressure sensors with a wide detection range using polydimethylsiloxane (PDMS) as the substrate, carbon nanotube films as the electrode material, and self-assembled polystyrene microsphere film as the microstructure layer. The obtained pressure sensor had a sandwich structure, and had a wide pressure detection range (from 4 kPa to 270 kPa), a sensitivity of 2.49 kPa−1, and a response time of tens of milliseconds. Two hundred load–unload cycles indicated that the device had good stability. In addition, the sensor was obtained by large-area fabrication with a low power consumption. This pressure sensor is expected to be widely used in applications such as electronic skin and flexible wearable devices.

Adolescent Use of Socially Interactive Technology to Communicate About a Stressful Event

2010 ◽  
Author(s):  
Shereen N. Naser ◽  
Katie Mozier ◽  
Stacy Overstreet
Keyword(s):  
Interactive Technology ◽  
Stressful Event
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