Triboelectric Nanogenerator‐Enabled 3D Microporous Polydimethylsiloxane–Graphene Oxide Nanocomposite for Flexible Self‐Powered Humidity Sensing Applications

Mohamadbeigi, Nima; Rafiefard, Nassim; Ejehi, Faezeh; Mohammadpour, Raheleh; Iraji zad, Azam

doi:10.1002/ente.202301136

Cited by 9 publications

(1 citation statement)

References 47 publications

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“…To evaluate the electricity generated from the TENG, a tapping machine was employed as the external force with a operating distance of 2 cm and force of 6 N as measured previously in this research group. 22 A digital oscilloscope (Agilent technologies DSO1022A) and a μ-Autolab potentiostat/galvanostat (The Netherlands) were used to test the output performance of the TENG. Following the V OC and I SC evaluation, the output power and stability of the TENG were assessed for various load resistance values.…”

Section: Preparation Of Triboelectric Layersmentioning

confidence: 99%

Flexible Triboelectric Nanogenerator for Promoting the Proliferation and Migration of Human Fibroblast Cells

Nazari-Vanani,

Vafaiee,

Zamanpour

et al. 2024

ACS Appl. Mater. Interfaces

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Chronic wound healing is often a prolonged process with the migration and proliferation of fibroblast cells playing crucial roles. Electrical stimulation (ES) has emerged as a promising physical therapy modality to promote these key events. In this study, we address this issue by employing a triboelectric nanogenerator (TENG) as an electrical stimulator for both drug release and the stimulation of fibroblast cells. The flexible TENG with a sandwich structure was fabricated using a PCL nanofibrous layer, Kapton, and silicon rubber. The TENG could be folded to any degree and twisted, and it could return to its original shape when the force was removed. Cultured cells received ES twice and three times daily for 8 days, with a 30 min interval between sessions. By applying current in a safe range and appropriate time (twice daily), fibroblasts demonstrate an accelerated proliferation and migration rate. These observations were confirmed through cell staining. Additionally, in vitro tests demonstrated the TENG's ability to simultaneously provide ES and release vitamin C from the patch. After 2 h, the amount of released drug increased 2 times in comparison to the control group. These findings provide support for the development of a TENG for the treatment of wounds, which underlines the promise of this new technique for developing portable electric stimulation devices.

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Section: Preparation Of Triboelectric Layersmentioning

confidence: 99%

Flexible Triboelectric Nanogenerator for Promoting the Proliferation and Migration of Human Fibroblast Cells

Nazari-Vanani,

Vafaiee,

Zamanpour

et al. 2024

ACS Appl. Mater. Interfaces

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A Moisture‐Proof, Anti‐Fouling, and Low Signal Attenuation All‐Nanofiber Triboelectric Sensor for Self‐Powered Respiratory Health Monitoring

Chen,

Peng,

Wei

et al. 2024

Adv Funct Materials

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Breathing is an important physiological health indicator of the human body. Real time and long‐term monitoring with low attenuation of human respiratory health status is of great significance. However, the working performance of respiratory sensors typically placed at the mouth and nose of the human body is greatly affected by exhaled moisture and small pollutants. Here, an all‐nanofiber self‐powered respiratory sensor (ASRS) with a multi‐layer stacking structure is developed based on contact electrification or triboelectrification effect. By spraying method to chemically graft low surface energy octadecyltrichlorosilane (OTS) small molecules onto the surface of nanofibers, the ASRS is endowed with excellent superhydrophobicity and self‐cleaning properties, making it free from the influence of high humidity and small particle pollutants in exhaled gas. Due to the gradient variation of contact interface with increasing pressure, the ASRS exhibits a multi‐stage linear sensitivity response trend, which has high pressure response sensitivity of 0.048 kPa−1. In addition, the ASRS is further integrated on a smart mask for real‐time and long‐term monitoring of respiratory health status, including age and gender of subjects, physical activity status, and sleep apnea syndrome. This work provides an effective self‐powered sensing strategy for daily physiological monitoring, proactive healthcare, and early disease warning.

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2D Layered Materials Based Triboelectric Self‐Powered Sensors

Rajaboina,

Khanapuram,

Kulandaivel

2024

Advanced Sensor Research

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Sensors play a crucial role in enhancing the quality of life, ensuring safety, and facilitating technological advancements. Over the past decade, 2D layered materials have been added as new sensing element in addition to existing materials such as metal oxides, semiconductors, metals, and polymers. 2D Layered materials are typically characterized by their single or few‐layer thickness and offer a high surface‐to‐volume ratio, exceptional mechanical strength, and unique electronic attributes. These properties make them ideal candidates for a variety of sensing applications. This review article focused on utilizing 2D layered materials in triboelectric nanogenerators (TENGs) for different sensing applications. The best part of TENG‐based sensing is that it is self‐powered, so no external power supply is required. The initial part of the review focused on the importance of the 2D layered materials and their innovative integration methods in TENGs. Further, this review discusses various sensing applications, including humidity, touch, force, temperature, and gas sensing, highlighting the impact of 2D layered materials in enhancing the sensitivity and selectivity of TENG sensors. The last part of the review discusses the challenges and prospects of TENG‐based self‐powered sensors.

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Triboelectric Nanogenerator‐Enabled 3D Microporous Polydimethylsiloxane–Graphene Oxide Nanocomposite for Flexible Self‐Powered Humidity Sensing Applications

Cited by 9 publications

References 47 publications

Flexible Triboelectric Nanogenerator for Promoting the Proliferation and Migration of Human Fibroblast Cells

Flexible Triboelectric Nanogenerator for Promoting the Proliferation and Migration of Human Fibroblast Cells

A Moisture‐Proof, Anti‐Fouling, and Low Signal Attenuation All‐Nanofiber Triboelectric Sensor for Self‐Powered Respiratory Health Monitoring

2D Layered Materials Based Triboelectric Self‐Powered Sensors

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