Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity

Kang, Hyunkyoo; Kim, Seokjin; Shin, Jaehak; Ko, Sung-Lim

doi:10.3390/app12063193

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…These potential applications are creating opportunities for researchers to develop conformal strain sensors. In past, many sensors have been designed by using flexible materials like polydimethylsiloxane (PDMS) [5], polyethylene terephthalate (PET) [6], silicon rubber [7], and many others. But the extensive usage of such materials causes environmental hazards as they are not naturally degradable and turn into electronic waste [8].…”

Section: Introductionmentioning

confidence: 99%

Paper-based wearable ultra-sensitive strain sensors for fitness monitoring

Javaid

Zulfiqar²,

Saleem³

et al. 2023

Flex. Print. Electron.

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Emerging technologies that exhibit features of biodegradability and eco-friendliness are potential game changers. Paper is a cost-effective and easily available material that has proved itself a promising candidate for the manufacturing of strain sensors due to its easy integration into flexible electronics. In this work, an ultra-sensitive and highly stable strain sensor is presented. The modified interdigital capacitor (MIDC) structure is fabricated on a simple printing paper whereas copper tape is used as an electrode material. In the anticipated work, the milestones of high sensitivity, durability, and fast response time altogether are achieved. The proposed flexible strain sensor is eco-friendly, bio-degradable, inexpensive, and responds well to applied strain. The proposed work exhibits a fast response time of 0.56 sec. The high gauge factor value of 3040.26 and stability up to 5000 cycles. The proposed prototype has been also implemented on the human body for monitoring physical activities and fitness exercises. The proposed strain sensor is an outstandingly good option for assimilation into wearable systems like remote healthcare systems, electromechanical sensing, and human physical monitoring.

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Section: Introductionmentioning

confidence: 99%

Paper-based wearable ultra-sensitive strain sensors for fitness monitoring

Javaid

Zulfiqar²,

Saleem³

et al. 2023

Flex. Print. Electron.

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show abstract

“…Researchers have extensively been exploring flexible sensing technology for its versatile applications in wearable electronics, 1 flexible displays, 2 human motion monitoring devices, 3 and energy harvesting devices. 4 Many sensors have been developed in the past utilizing flexible materials such as silicon rubber, 5 polyethylene terephthalate (PET), 6 polydimethylsiloxane (PDMS), 7 etc. However, since these materials are not naturally biodegradable and end up as electronic wastes, their widespread consumption poses environmental risks.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional material-assisted paper substrate-based strain sensor for motion signals measurement

Khan,

Goyal

et al. 2023

Advanced Sensor Systems and Applications XIII

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In this paper, we demonstrate the operation of flexible and highly sensitive MXENE-based capacitive strain sensor fabricated on a paper substrate. The use of common printing paper as a substrate not only makes the fabrication facile and inexpensive but also makes the sensor eco-friendly and biodegradable. The presented sensor has been mounted on the human body to monitor the movements of various joints like the wrist and the elbow. Upon application of strain, a noticeable change of more than 30% in the total capacitance of the sensor is observed. By measuring the change in the capacitance of the sensor, the movements of human joints can be monitored and used for applications like exercise and therapy.

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“…Several unconventional jet printing methods, such as atomic force microscope charge writing [ 15 ] pyro-electrospinning [ 16 ], and bipolar electrospinning [ 17 ] have demonstrated the capacity to produce direct patterns for manufacturing high-value structures. Researchers have also worked on direct ink writing [ 18 , 19 , 20 , 21 , 22 ], laser writing [ 23 , 24 , 25 , 26 ], and pressure inkjet printing [ 27 , 28 , 29 ] techniques to obtain high-resolution structures of different materials. Although the aforementioned methods have been utilized to create a variety of structures, their low resolution is a major issue in increasing device functionality.…”

Section: Introductionmentioning

confidence: 99%

High-Resolution, Transparent, and Flexible Printing of Polydimethylsiloxane via Electrohydrodynamic Jet Printing for Conductive Electronic Device Applications

et al. 2022

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In the field of soft electronics, high-resolution and transparent structures based on various flexible materials constructed via various printing techniques are gaining attention. With the support of electrical stress-induced conductive inks, the electrohydrodynamic (EHD) jet printing technique enables us to build high-resolution structures compared with conventional inkjet printing techniques. Here, EHD jet printing was used to fabricate a high-resolution, transparent, and flexible strain sensor using a polydimethylsiloxane (PDMS)/xylene elastomer, where repetitive and controllable high-resolution printed mesh structures were obtained. The parametric effects of voltage, flow rate, nozzle distance from the substrate, and speed were experimentally investigated to achieve a high-resolution (5 µm) printed mesh structure. Plasma treatment was performed to enhance the adhesion between the AgNWs and the elastomer structure. The plasma-treated functional structure exhibited stable and long strain-sensing cycles during stretching and bending. This simple printing technique resulted in high-resolution, transparent, flexible, and stable strain sensing. The gauge factor of the strain sensor was significantly increased, owing to the high resolution and sensitivity of the printed mesh structures, demonstrating that EHD technology can be applied to high-resolution microchannels, 3D printing, and electronic devices.

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Inkjet-Printed Flexible Strain-Gauge Sensor on Polymer Substrate: Topographical Analysis of Sensitivity

Cited by 8 publications

References 22 publications

Paper-based wearable ultra-sensitive strain sensors for fitness monitoring

Paper-based wearable ultra-sensitive strain sensors for fitness monitoring

Two-dimensional material-assisted paper substrate-based strain sensor for motion signals measurement

High-Resolution, Transparent, and Flexible Printing of Polydimethylsiloxane via Electrohydrodynamic Jet Printing for Conductive Electronic Device Applications

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