A sandpaper assisted micro-structured polydimethylsiloxane fabrication for human skin based triboelectric energy harvesting application

Rasel, M. Salauddin; Park, Jaeyeong

doi:10.1016/j.apenergy.2017.07.109

Cited by 124 publications

(61 citation statements)

References 32 publications

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“…The Pt electrode and human skin were used as bottom and top electrodes, and the pyramid‐shaped PDMS layer was used as the dielectric layer. The pyramid shape increases the surface contact area with the human skin, enhancing the performance of the energy harvester . When human skin is in contact with the PDMS surface, the negative charges on the skin are transferred to the PDMS surface according to the triboelectric series (Figure a) .…”

Section: Resultsmentioning

confidence: 99%

A Highly Sensitive Bending Sensor Based on Controlled Crack Formation Integrated with an Energy Harvesting Pyramid Layer

Lee

Yang

et al. 2018

Adv Materials Technologies

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A highly sensitive bending sensor composed of patterned Pt lines, integrated with energy harvesting capability, is reported. The sensitivity of the bending sensor increases as the width of the Pt lines decreases, owing to the increase in crack density with decreasing line width. Furthermore, sensitivity increases with increasing bending cycles, but saturates at around 1000 cycles. Such a behavior corresponds to the increase and eventual saturation of crack density with increasing bending cycles. A microstructured polydimethylsiloxane layer is placed on top of the Pt lines to serve as a triboelectric energy harvesting layer, where human skin and the Pt lines are utilized as electrodes. Voltage and current of 18.6 V and 209 nA are generated, respectively, from gentle finger tapping. These demonstrations make the device highly useful for a wide variety of portable and wearable flexible electronic applications.

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Section: Resultsmentioning

confidence: 99%

A Highly Sensitive Bending Sensor Based on Controlled Crack Formation Integrated with an Energy Harvesting Pyramid Layer

Lee

Yang

et al. 2018

Adv Materials Technologies

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“…A total of 14 different electron acceptor materials (Figure 1A) were observed in the 100 articles. Polytetrafluoroethylene (PTFE), 9,10,23‐55 polydimethyl‐siloxane (PDMS), 56‐77 fluorinated ethylene propylene (FEP), 33,78‐95 and Kapton 5,33,96‐101 are the most used electron acceptors. Among the 100 reports, 34% use PTFE as a triboelectric layer, while the percentages for PDMS and FEP are 22% and 18%, respectively.…”

Section: Current Materials Choices Of Tengsmentioning

confidence: 99%

Material choices for triboelectric nanogenerators: A critical review

Zhang

Olin

2020

EcoMat

312

158

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A triboelectric nanogenerator (TENG) is a novel technology with applications in many areas, including energy harvesting, self-powered sensing, medication, and electronics. The materials used as triboelectric layers are diverse and include polymers, metals, and inorganic materials. The most commonly used materials are dielectric polymers such as PTFE, FEP, PDMS, and Kapton. Green materials, such as cellulose-based materials, have recently gained increasing interest, and the performance of TENGs using cellulose materials has improved. The material choices are of great importance for TENGs since the triboelectric effects of the materials are fundamental for TENGs. To design a TENG for a particular application, several parameters need to be considered, such as power density, stability, flexibility, and sustainability. This critical review will summarize and evaluate the material choices for TENGs in different applications.

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“…Sandpaper is assessed according to the grit size (number of holes per linear inch in a sieve screen) [33]. Also, it inherently creates nano-micro scale roughness levels [34,35]. In comparison with traditional substrates for the TENG, it cut down the time-consuming and additional expensive fabrication procedures to achieve nano-micro roughness to enhance the effective contact area of the TENG.…”

Section: Introductionmentioning

confidence: 99%

Dry-Coated Graphite onto Sandpaper for Triboelectric Nanogenerator as an Active Power Source for Portable Electronics

et al. 2019

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Developing an eco-friendly, flexible and recyclable micro-structured dry electrode for sustainable life is essential. In this work, we have developed irregular, micro-structured sandpaper coated with graphite powder as an electrode for developing a simple, low-cost, contact-separation mode graphite-coated sandpaper-based triboelectric nanogenerator (GS-TENG) as a self-powered device and biomechanical sensor. The as-fabricated GS-TENG is a dielectric-conductor model. It is made up of a bottom layer with polytetrafluoroethylene (PTFE) as a triboelectric layer, which is attached onto a graphite-coated sandpaper-based electrode and a top layer with aluminum as another triboelectric layer as well as an electrode. The forward and reverse open-circuit voltages reach upto ~33.8 V and ~36.62 V respectively, and the forward and reverse short-circuit currents are ~2.16 µA and ~2.17µA, respectively. The output generated by GS-TENG can power 120 blue light-emitting diodes connected in series, liquid crystal display and can charge commercial capacitors along with the rectifier circuit. The capacitor of 22 µF is charged upto 5 V and is sufficient to drive digital watch as wearable electronics. Moreover, the device can track signals generated by human motion, hence it scavenges biomechanical energy. Thus, GS-TENG facilitates large-scale fabrication and has potential for future applications in wearable and portable devices.

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A sandpaper assisted micro-structured polydimethylsiloxane fabrication for human skin based triboelectric energy harvesting application

Cited by 124 publications

References 32 publications

A Highly Sensitive Bending Sensor Based on Controlled Crack Formation Integrated with an Energy Harvesting Pyramid Layer

A Highly Sensitive Bending Sensor Based on Controlled Crack Formation Integrated with an Energy Harvesting Pyramid Layer

Material choices for triboelectric nanogenerators: A critical review

Dry-Coated Graphite onto Sandpaper for Triboelectric Nanogenerator as an Active Power Source for Portable Electronics

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