scholarly journals A Fully Self-Healing Piezoelectric Nanogenerator for Self-Powered Pressure Sensing Electronic Skin

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Maosen Yang ◽  
Jinmei Liu ◽  
Dong Liu ◽  
Jingyi Jiao ◽  
Nuanyang Cui ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Healing Process ◽  
Electric Energy ◽  
Piezoelectric Composite ◽  
Human Hand ◽  
Self Healing ◽  
Pressure Sensing ◽  
External Stimulation ◽  
Electronic Skin ◽  
Self Powered

As an important way of converting mechanical energy into electric energy, a piezoelectric nanogenerator (PENG) has been widely applied in energy harvesting as well as self-powered sensors in recent years. However, its robustness and durability are still severely challenged by frequent and inevitable mechanical impacts in real application environments. Herein, a fully self-healing PENG (FS-PENG) as a self-powered pressure sensing electronic skin is reported. The self-healing piezoelectric composite and self-healing Ag NW electrode fabricated through mixing piezoelectric PZT particles and conductive Ag NWs into self-healing polydimethylsiloxane (H-PDMS) are assembled into the sandwich structure FS-PENG. The FS-PENG could not only effectively convert external stimulation into electrical signals with a linear response to the pressure but also retain the excellent self-healing and stable sensing property after multiple cycles of cutting and self-healing process. Moreover, a self-healing pressure sensor array composed of 9 FS-PENGs was attached on the back of the human hand to mimic the human skin, and accurate monitoring of the spatial position distribution and magnitude of the pressure was successfully realized.

Highly Robust and Self-Powered Electronic Skin Based on Tough Conductive Self-Healing Elastomer

ACS Nano ◽  
2020 ◽  
Vol 14 (7) ◽  
pp. 9066-9072 ◽  
Author(s):  
Xiaochen Xun ◽  
Zheng Zhang ◽  
Xuan Zhao ◽  
Bin Zhao ◽  
Fangfang Gao ◽  
...  
Keyword(s):  
Self Healing ◽  
Electronic Skin ◽  
Self Powered

Self-powered artificial electronic skin for high-resolution pressure sensing

Nano Energy ◽  
2017 ◽  
Vol 32 ◽  
pp. 389-396 ◽  
Author(s):  
Mingyuan Ma ◽  
Zheng Zhang ◽  
Qingliang Liao ◽  
Fang Yi ◽  
Linhong Han ◽  
...  
Keyword(s):  
High Resolution ◽  
Pressure Sensing ◽  
Electronic Skin ◽  
Self Powered

scholarly journals Self-healable sticky porous elastomer for gas-solid interacted power generation

2020 ◽  
Vol 6 (29) ◽  
pp. eabb4246 ◽  
Author(s):  
Jiaqing Xiong ◽  
Gurunathan Thangavel ◽  
Jiangxin Wang ◽  
Xinran Zhou ◽  
Pooi See Lee
Keyword(s):  
Power Generation ◽  
Mechanical Energy ◽  
Solid Polymer ◽  
Triboelectric Nanogenerator ◽  
Self Healing ◽  
Trapped Air ◽  
Elastomeric Matrix ◽  
Self Powered ◽  
Triboelectric Effect ◽  
Gas Tight

A previously unknown gas-solid interacted power generation is developed using triboelectric effect. We designed an adhesive, gas-tight, and self-healing supramolecular polysiloxane-dimethylglyoxime–based polyurethane (PDPU) porous elastomer based on segmented oxime-carbamate-urea. It is an intrinsically triboelectric negative material with trapped air within closed voids, exhibiting ultrahigh static surface potential and excellent compressibility. This porous PDPU generates electricity from interactions between the trapped air and the elastomeric matrix under periodical compression. The positively charged trapped air (or other gas) dominates the tribo-electrification with PDPU, inducing electron transfer from gas to the solid polymer for electricity generation. The self-healable elastomer renders gas-solid interacted triboelectric nanogenerator, GS-TENG, with high stretchability (~1200%). The inherently adhesive surface enables adherance to other substrates, allowing mechanical energy harvesting from deformations such as bending, twisting, and stretching. GS-TENG promises a freestanding wearable functional tactile skin for self-powered sensing of touch pressure, human motions, and Parkinsonian gait.

Hybrid porous micro structured finger skin inspired self-powered electronic skin system for pressure sensing and sliding detection

Nano Energy ◽  
2018 ◽  
Vol 51 ◽  
pp. 496-503 ◽  
Author(s):  
Haotian Chen ◽  
Yu Song ◽  
Hang Guo ◽  
Liming Miao ◽  
Xuexian Chen ◽  
...  
Keyword(s):  
Pressure Sensing ◽  
Electronic Skin ◽  
Self Powered ◽  
Finger Skin

scholarly journals Flexible and Wearable PDMS-Based Triboelectric Nanogenerator for Self-Powered Tactile Sensing

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1304 ◽  
Author(s):  
Jie Wang ◽  
Shuo Qian ◽  
Junbin Yu ◽  
Qiang Zhang ◽  
Zhongyun Yuan ◽  
...  
Keyword(s):  
Human Body ◽  
Flexible Electronics ◽  
Mechanical Energy ◽  
Electric Energy ◽  
Green Light ◽  
Triboelectric Nanogenerator ◽  
Good Sensitivity ◽  
Pdms Film ◽  
Compact Size ◽  
Self Powered

Flexible electronics devices with tactile perception can sense the mechanical property data of the environment and the human body, and they present a huge potential in the human health system. In particular, the introduction of ultra-flexible and self-powered characteristics to tactile sensors can effectively reduce the problems caused by rigid batteries. Herein, we report a triboelectric nanogenerator (TENG), mainly consisting of an ultra-flexible polydimethylsiloxane (PDMS) film with micro-pyramid-structure and sputtered aluminum electrodes, which achieves highly conformal contact with skin and the self-powered detection of human body motions. The flexible polyethylene terephthalate (PET) film was selected as spacer layer, which made the sensor work in the contact-separation mode and endowed the perfect coupling of triboelectrification and electrostatic induction. Moreover, the controllable and uniform micro-structure PDMS film was fabricated by using the micro-electro-mechanical system (MEMS) manufacturing process, bringing a good sensitivity and high output performance to the device. The developed TENG can directly convert mechanical energy into electric energy and light up 110 green Light-Emitting Diodes (LEDs). Furthermore, the TENG-based sensor displays good sensitivity (2.54 V/kPa), excellent linearity (R2 = 0.99522) and good stability (over 30,000 cycles). By virtue of the compact size, great electrical properties, and great mechanical properties, the developed sensor can be conformally attached to human skin to monitor joint movements, presenting a promising application in wearable tactile devices. We believe that the ultra-flexible and self-powered tactile TENG-based sensor could have tremendous application in wearable electrons.

scholarly journals Ultra-stretchable and healable hydrogel-based triboelectric nanogenerators for energy harvesting and self-powered sensing

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17437-17444
Author(s):  
Guoxia Li ◽  
Longwei Li ◽  
Panpan Zhang ◽  
Caiyun Chang ◽  
Fan Xu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Harvesting ◽  
Mechanical Energy ◽  
Self Healing ◽  
Self Powered ◽  
Triboelectric Nanogenerators ◽  
Physical Crosslinking

An ultra-stretchable and self-healing hydrogel is developed with graphene oxide and Laponite as collaborative physical crosslinking points, which is utilized in triboelectric nanogenerators for mechanical energy harvesting and self-powered sensing.

scholarly journals Fully Organic Self-Powered Electronic Skin with Multifunctional and Highly Robust Sensing Capability

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Lijuan Song ◽  
Zheng Zhang ◽  
Xiaochen Xun ◽  
Liangxu Xu ◽  
Fangfang Gao ◽  
...  
Keyword(s):  
The Self ◽  
Tactile Sensation ◽  
Soft Robotics ◽  
Triboelectric Nanogenerator ◽  
Self Healing ◽  
Wearable Electronics ◽  
Arm Swing ◽  
Electronic Skin ◽  
Self Powered ◽  
Robust Sensing

Electronic skin (e-skin) with skin-like flexibility and tactile sensation will promote the great advancements in the fields of wearable equipment. Thus, the multifunction and high robustness are two important requirements for sensing capability of the e-skin. Here, a fully organic self-powered e-skin (FOSE-skin) based on the triboelectric nanogenerator (TENG) is developed. FOSE-skin based on TENG can be fully self-healed within 10 hours after being sheared by employing the self-healing polymer as a triboelectric layer and ionic liquid with the temperature sensitivity as an electrode. FOSE-skin based on TENG has the multifunctional and highly robust sensing capability and can sense the pressure and temperature simultaneously. The sensing capability of the FOSE-skin based on TENG can be highly robust with no changes after self-healing. FOSE-skin based on TENG can be employed to detect the arm swing, the temperature change of flowing water, and the motion trajectory. This work provides a new idea for solving the issues of monofunctional and low robust sensing capability for FOSE-skin based on TENG, which can further promote the application of wearable electronics in soft robotics and bionic prosthetics.

scholarly journals Supramolecular Self-Healing Sensor Fiber Composites for Damage Detection in Piezoresistive Electronic Skin for Soft Robots

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2983
Author(s):  
Antonia Georgopoulou ◽  
Anton W. Bosman ◽  
Joost Brancart ◽  
Bram Vanderborght ◽  
Frank Clemens
Keyword(s):  
Healing Process ◽  
Matrix Material ◽  
Fiber Composites ◽  
Self Healing ◽  
Elastomeric Matrix ◽  
Electronic Skin ◽  
Bending Actuator ◽  
3D Printed ◽  
Resilient Response ◽  
Actuator Module

Self-healing materials can prolong the lifetime of structures and products by enabling the repairing of damage. However, detecting the damage and the progress of the healing process remains an important issue. In this study, self-healing, piezoresistive strain sensor fibers (ShSFs) are used for detecting strain deformation and damage in a self-healing elastomeric matrix. The ShSFs were embedded in the self-healing matrix for the development of self-healing sensor fiber composites (ShSFC) with elongation at break values of up to 100%. A quadruple hydrogen-bonded supramolecular elastomer was used as a matrix material. The ShSFCs exhibited a reproducible and monotonic response. The ShSFCs were investigated for use as sensorized electronic skin on 3D-printed soft robotic modules, such as bending actuators. Depending on the bending actuator module, the electronic skin was loaded under either compression (pneumatic-based module) or tension (tendon-based module). In both configurations, the ShSFs could be successfully used as deformation sensors, and in addition, detect the presence of damage based on the sensor signal drift. The sensor under tension showed better recovery of the signal after healing, and smaller signal relaxation. Even with the complete severing of the fiber, the piezoresistive properties returned after the healing, but in that case, thermal heat treatment was required. With their resilient response and self-healing properties, the supramolecular fiber composites can be used for the next generation of soft robotic modules.

Piezoelectricity and Flexoelectricity from an Energy Harvesting Perspective: Nanogenerators

2021 ◽  
Vol 30 (9) ◽  
pp. 11-15
Author(s):  
Yoon-Hwae HWANG
Keyword(s):  
Energy Harvesting ◽  
Mechanical Energy ◽  
Electric Energy ◽  
Wearable Electronics ◽  
Power Sources ◽  
Sufficient Power ◽  
External Sources ◽  
Self Powered ◽  
Energy Harvesting Devices ◽  
Piezoelectric Nanogenerators

Energy harvesting is the process by which energy can be obtained from external sources and used for wearable electronics and wireless sensor networks. Piezoelectric nanogenerators are energy harvesting devices that convert mechanical energy into electric energy by using nanostructured materials. This article summarizes work to date on piezoelectric nanogenerators, starting with the basic theory of piezo- and flexo-electricity and moving through reports on nanogenerators using nanostructures, flexible substrates and alternative materials. A sufficient power generated from nanogenerators suggests feasible applications for either power sources or strain sensors of highly integrated nanodevices. Further improvements in nanogenerators holds promise for the development of self-powered implantable and wearable electronics.

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