All‐Recyclable Triboelectric Nanogenerator for Sustainable Ocean Monitoring Systems

Jeong

et al. 2022

Sensors

Self Cite

Polyvinylidene fluoride (PVDF) is an emerging method for energy harvesting by fluid motion with superior flexibility. However, the PVDF energy harvester, which has a high internal impedance and generates a low voltage, has a large power transmission loss. To overcome this problem, we propose an impedance-coupled voltage-boosting circuit (IC-VBC) that reduces the impedance of the PVDF energy harvester and boosts the voltage. SPICE simulation results show that IC-VBC reduces the impedance of the PVDF energy harvester from 4.3 MΩ to 320 kΩ and increases the output voltage by 2.52 times. We successfully charged lithium-ion batteries using the PVDF energy harvester and IC-VBC with low-speed wind power generation.

Section: Experiments Resultsmentioning

confidence: 99%

Impedance Coupled Voltage Boosting Circuit for Polyvinylidene Fluoride Based Energy Harvester

Jeong

et al. 2022

Sensors

Self Cite

“…Subsequently, the resin was cured under UV light and separated from the master mold. The detailed fabrication of the polymer mold from the Si master has been described in our previous work. , …”

Section: Methodsmentioning

confidence: 99%

Nanotransfer-on-Things: From Rigid to Stretchable Nanophotonic Devices

Ahn

Jeong

et al. 2023

ACS Nano

Self Cite

The growing demand for nanophotonic devices has driven the advancement of nanotransfer printing (nTP) technology. Currently, the scope of nTP is limited to certain materials and substrates owing to the temperature, pressure, and chemical bonding requirements. In this study, we developed a universal nTP technique utilizing covalent bonding-based adhesives to improve the adhesion between the target material and substrate. Additionally, the technique employed plasma-based selective etching to weaken the adhesion between the mold and target material, thereby enabling the reliable modulation of the relative adhesion forces, regardless of the material or substrate. The technique was evaluated by printing four optical materials on nine substrates, including rigid, flexible, and stretchable substrates. Finally, its applicability was demonstrated by fabricating a ring hologram, a flexible plasmonic color filter, and extraordinary optical transmission-based strain sensors. The high accuracy and reliability of the proposed nTP method were verified by the performance of nanophotonic devices that closely matched numerical simulation results.

“…Wireless sensors constitute one of the most important devices for collecting data and transferring control signals from the marine environment [ 60 ]. In recent years, due to the outstanding advantages of TENG, the application of self-powered sensors based on TENGs in marine ecological monitoring has been gradually increasing [ 61 , 62 , 63 , 64 , 65 ].…”

Section: The Application Of a Self-powered Wireless Sensor Based On Tengmentioning

confidence: 99%

Recent Progress in Self-Powered Wireless Sensors and Systems Based on TENG

Wei

et al. 2023

Sensors

With the development of 5G, artificial intelligence, and the Internet of Things, diversified sensors (such as the signal acquisition module) have become more and more important in people’s daily life. According to the extensive use of various distributed wireless sensors, powering them has become a big problem. Among all the powering methods, the self-powered sensor system based on triboelectric nanogenerators (TENGs) has shown its superiority. This review focuses on four major application areas of wireless sensors based on TENG, including environmental monitoring, human monitoring, industrial production, and daily life. The perspectives and outlook of the future development of self-powered wireless sensors are discussed.