Enhanced Performance of Microarchitectured PTFE-Based Triboelectric Nanogenerator via Simple Thermal Imprinting Lithography for Self-Powered Electronics

Dudem, Bhaskar; Kim, Dong Hyun; Mule, Anki Reddy; Yu, Jae Su

doi:10.1021/acsami.8b06295

Cited by 100 publications

(48 citation statements)

References 43 publications

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“…In order to improve the surface contact area across the dielectric/triboelectric materials, the surface modification treatments by introducing the micro‐/nanoarchitectures and fluorocarbon treatments are widely used in previous literature . However, the micro‐/nanoarchitectured molds fabricated by expensive and time‐consuming techniques such as photolithography, nanoimprinting lithography, or laser interference lithography, together with subsequent dry etching are used to modify the surface roughness of dielectric materials . Accordingly, the time and cost to produce the TENG devices using these dielectric materials can also increase.…”

Section: Introductionmentioning

confidence: 99%

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Mule

Dudem

Graham

et al. 2019

Adv Funct Materials

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115

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Triboelectric nanogenerators (TENGs) are gaining much research interest recently owing to their facile and cost-effective device structure. However, the effect of relative humidity (in moisture atmosphere) on the output performance still needs to be resolved. Herein, a pouch-type TENG is proposed to significantly reduce the effect of relative humidity on its electrical output and a stable performance is also attained in a humid environment. In this regard, a dielectric and dielectric materials-based TENG (DD-TENG) is first developed using nanoarchitecture polydimethylsiloxane (NA-PDMS) and multiwalled carbon nanotube/nylon composite layers as a triboelectric material with the negative and positive tendencies, respectively. The NA-PDMS and nylon composite layers play a key role in increasing the surface contact area and surface charge density between the dielectric/triboelectric materials as well as the output performance of DD-TENG. However, the DD-TENG device exhibits a stable and high output performance with the effective output power density of ≈25.35 W m −2 . Additionally, the performance of the pouch-type DD-TENG device is not almost affected even though the relative humidity is increased from 35 to 81%, while it is dramatically decreased for the nonpouchtype device. Finally, the pouch-type DD-TENG is employed as a wearable device to effectively harvest the mechanical energy from daily human activities.

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Section: Introductionmentioning

confidence: 99%

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Mule

Dudem

Graham

et al. 2019

Adv Funct Materials

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115

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“…Moreover, the surface structure of the materials also plays an important role. An increase in roughness produces more friction resulting in an enhanced electrical output [174][175][176]. Recently, various TENGs have been invented based on different triboelectric materials, substrates, spacers, and electrodes [173,177].…”

Section: Triboelectricmentioning

confidence: 99%

Wearable Skin Sensors and Their Challenges: A Review of Transdermal, Optical, and Mechanical Sensors

2020

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Wearable technology and mobile healthcare systems are both increasingly popular solutions to traditional healthcare due to their ease of implementation and cost-effectiveness for remote health monitoring. Recent advances in research, especially the miniaturization of sensors, have significantly contributed to commercializing the wearable technology. Most of the traditional commercially available sensors are either mechanical or optical, but nowadays transdermal microneedles are also being used for micro-sensing such as continuous glucose monitoring. However, there remain certain challenges that need to be addressed before the possibility of large-scale deployment. The biggest challenge faced by all these wearable sensors is our skin, which has an inherent property to resist and protect the body from the outside world. On the other hand, biosensing is not possible without overcoming this resistance. Consequently, understanding the skin structure and its response to different types of sensing is necessary to remove the scientific barriers that are hindering our ability to design more efficient and robust skin sensors. In this article, we review research reports related to three different biosensing modalities that are commonly used along with the challenges faced in their implementation for detection. We believe this review will be of significant use to researchers looking to solve existing problems within the ongoing research in wearable sensors.

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“…In order to increase potential areas of applications of the triboelectric nanogenerators, researchers look for a solution ensuring low device processing cost and high electrical output. Dudem et al [24] faced this issue by employing a microgrooved architectured (MGA)-poly(tetra uoroethylene) (PTFE) and aluminum as triboelectric materials with opposite tendencies. e authors con rmed good electrical properties of the developed triboelectric generator in a robustness test, in which its output power was used to drive light-emitting diodes and portable electronic devices.…”

Section: Solutions Based On Triboelectric Phenomenonmentioning

confidence: 99%

Analysis of the Possibility of Using Energy Harvesters to Power Wearable Electronics in Clothing

Dąbrowska

Greszta

2019

Advances in Materials Science and Engineering

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The purpose of this study is to analyze the state-of-art knowledge of the use of energy harvesters (EHs) to power the wearables of clothing. The study discusses some examples of clothing with incorporated different types of EHs, harvesting energy from body movement (based on piezoelectric, electromagnetic, and electrostatic phenomena) from temperature differences, as well as from solar radiation. In the performed analysis, particular attention was focused on the design of EHs, their principle of operation, advantages, disadvantages, and restrictions on use. Low energy requirements of wearable electronics (e.g., sensors and diodes) implemented to clothing indicate the possibility of using miniaturized EHs as a power source for such elements. Each of the discussed EH has both disadvantages and advantages. Therefore, the selection of EH should be preceded by a detailed analysis of the conditions of the garment use, its destination, the user’s physical activity, and the energy needs of the electronic devices incorporated in clothing. Despite a variety of research studies aimed at developing new EH, relatively few of them concern their implementation in the structure of clothing and tests of their functionality in the foreseeable conditions of use. In view of the above, these issues have been addressed in this publication based on the available literature.

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Enhanced Performance of Microarchitectured PTFE-Based Triboelectric Nanogenerator via Simple Thermal Imprinting Lithography for Self-Powered Electronics

Cited by 100 publications

References 43 publications

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Wearable Skin Sensors and Their Challenges: A Review of Transdermal, Optical, and Mechanical Sensors

Analysis of the Possibility of Using Energy Harvesters to Power Wearable Electronics in Clothing

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