Understanding the dynamic response in ferroelectret nanogenerators to enable self-powered tactile systems and human-controlled micro-robots

Cao, Yunqi; Figueroa, Javier; Li, Wei; Chen, Zhiqiang; Wang, Zhong Lin; Sepúlveda, Nelson

doi:10.1016/j.nanoen.2019.06.048

Cited by 44 publications

(25 citation statements)

References 38 publications

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“…NGs could be applied as both power sources and self-powered tactile sensors [124][125][126][127][128][129]. Wen et al reported a stretchable wrinkled and transparent TENG and applied it in tactile sensing [130].…”

Section: Tactile Sensorsmentioning

confidence: 99%

“…A flexible and textile TENG for energy harvesting has proved the possibility as a strain sensor for strain sensing [109]. The integrated device was prepared in a single silk chip and could be adhered to the skin or fabrics to collect the biomechanical energy and detect strain at Position/accessory Finger [124][125][126]128] Finger skin [127] Finger and hand [129] Hand [131,132] Wrist [130] Hand and chest [119] Sock [133] Elbow and wrist [134] Arm and leg [135] Wrist, foot, elbow, knee [137] Cap or jaw [138] Joint [106] Forearm, shirt, pants [109] Abdomen [117] Thumb and wrist [140] Finger [141,144] Cotton glove [142] Finger, elbow, arm, knee [143] Elbow, leg, neck [106] Respirator [108,145,148] Finger [107] Waist and abdomen [116] Hand and fingertip [147] Flexibility Yes [124][125][126][127][128][129][130][131][132] Yes [133][134][135]…”

Section: Strain Sensorsmentioning

confidence: 99%

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Nanogenerator-Based Self-Powered Sensors for Wearable and Implantable Electronics

et al. 2020

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Wearable and implantable electronics (WIEs) are more and more important and attractive to the public, and they have had positive influences on all aspects of our lives. As a bridge between wearable electronics and their surrounding environment and users, sensors are core components of WIEs and determine the implementation of their many functions. Although the existing sensor technology has evolved to a very advanced level with the rapid progress of advanced materials and nanotechnology, most of them still need external power supply, like batteries, which could cause problems that are difficult to track, recycle, and miniaturize, as well as possible environmental pollution and health hazards. In the past decades, based upon piezoelectric, pyroelectric, and triboelectric effect, various kinds of nanogenerators (NGs) were proposed which are capable of responding to a variety of mechanical movements, such as breeze, body drive, muscle stretch, sound/ultrasound, noise, mechanical vibration, and blood flow, and they had been widely used as self-powered sensors and micro-nanoenergy and blue energy harvesters. This review focuses on the applications of self-powered generators as implantable and wearable sensors in health monitoring, biosensor, human-computer interaction, and other fields. The existing problems and future prospects are also discussed.

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Section: Tactile Sensorsmentioning

confidence: 99%

Section: Strain Sensorsmentioning

confidence: 99%

Nanogenerator-Based Self-Powered Sensors for Wearable and Implantable Electronics

et al. 2020

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“…Actuators based on dielectric elastomer polymers demand even higher driving voltages in thousands of volts due to the di culty in producing strong electromechanical responses by thin polymer lms. [18][19][20][21][22] In recent years, electret-based polymeric transducers have exhibited high electromechanical conversion e ciencies for applications in energy harvesters or sensors, [23][24][25][26] which could be applicable in building thin and wearable actuators for haptic human-machine interfaces.…”

Section: Introductionmentioning

confidence: 99%

A Battery-Powered Soft Electromechanical Stimulation Patch for Haptic Human-Machine Interfaces

Zhong¹,

Qiu²,

Jiang³

et al. 2021

Preprint

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One grand challenge in haptic human-machine interface devices is to electromechanically stimulate sensations on human skins wirelessly by thin and soft patches under a low driving voltage. Here, we propose a soft haptics-feedback system using highly charged, polymeric electret films with the annulus-shape bump contact structure to induce mechanical sensations on volunteers under an applied voltage as low as 5 volts. Together with bendable lithium ion batteries and a flexible circuit board, an untethered stimulation patch is constructed for active operations of at least 2 hours with low power consumptions. As an application example, a “silent haptic communication” system is demonstrated to transmit English alphabet letters via the mechanical beating patterns from a patch onto the fingertip of a receiving volunteer. The analytical model, design principle, and performance characterizations can be applicable for the integrations with other devices in wearable electronics toward various applications, including AR (augmented reality) and VR (virtual reality).

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“…Flexible strain sensors are of great interest in wearable electronics and electronic skin applications, not only because of their flexibility, but also their high sensitivity and simple process flow. Some of the applications for which strain sensors have gained attention include monitoring human health status [1][2][3][4], actualizing artificial intelligence [5], soft robotics [6,7], and human/machine interfaces [4][5][6][7][8]. Strain sensors detect changes in electrical properties, such as capacitance, resistance, or impedance, induced by applied mechanical stimulus.…”

Section: Introductionmentioning

confidence: 99%

A Flexible and Low-Cost Tactile Sensor Produced by Screen Printing of Carbon Black/PVA Composite on Cellulose Paper

Sekertekin

Bozyel

Gökcen

2020

Sensors

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This study presents the design and fabrication of a flexible tactile sensor printed on a cellulose paper substrate using a carbon black (CB) – filled polyvinyl alcohol (PVA) polymer matrix as ink material. In the design, electrodes are obtained by screen printing of CB/PVA composite on dielectric cellulose paper. The screen-printing method is preferred for fabrication because of its simplicity and low manufacturing cost. The tactile sensor is formed by overlapping two ink-printed sheets. Electrical properties are investigated under compressive and tensile strains. The results indicate that the tactile sensor configuration and materials can be used for piezoresistive, capacitive, and also impedance sensors. The same tactile sensor structure is also examined using a commercial carbon-based ink for performance comparison. The comparative study indicates that CB/PVA ink screen-printed on paper demonstrates superior sensitivity for capacitive sensing with low hysteresis, as well as low response and recovery times. The piezoresistive-sensing properties of CB/PVA on cellulose paper show a gauge factor (GF) of 10.68, which is also very promising when conventional metal strain gauges are considered. CB/PVA screen-printed on cellulose paper features impedance-sensing properties and is also sensitive to the measurement frequency. Therefore, the response type of the sensor can be altered with the frequency.

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Understanding the dynamic response in ferroelectret nanogenerators to enable self-powered tactile systems and human-controlled micro-robots

Cited by 44 publications

References 38 publications

Nanogenerator-Based Self-Powered Sensors for Wearable and Implantable Electronics

Nanogenerator-Based Self-Powered Sensors for Wearable and Implantable Electronics

A Battery-Powered Soft Electromechanical Stimulation Patch for Haptic Human-Machine Interfaces

A Flexible and Low-Cost Tactile Sensor Produced by Screen Printing of Carbon Black/PVA Composite on Cellulose Paper

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