Surface potential modulation for improved mechanical energy harvesting and sensing in 3D printed biopolymer thermoelectret

Saini, Dalip; Kumar, Ajay; Mishra, Hari Krishna; Gupta, Varun; Mondal, Bidya; Mallick, Zinnia; Mandal, Dipankar

doi:10.1016/j.sna.2023.114858

Sensors and Actuators A: Physical

2024

DOI: 10.1016/j.sna.2023.114858

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Surface potential modulation for improved mechanical energy harvesting and sensing in 3D printed biopolymer thermoelectret

Dalip Saini,

Ajay Kumar,

Hari Krishna Mishra

et al.

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2024

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Cited by 8 publications

References 71 publications

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Recent Advances in Ferroelectret Fabrication, Performance Optimization, and Applications

Wang,

Zhang,

Qiu

et al. 2024

Advanced Materials

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The growing demand for wearable devices has sparked a significant interest in ferroelectret films. They possess flexibility and exceptional piezoelectric properties due to strong macroscopic‐dipoles formed by charges trapped at the interface of their internal cavities. This review of ferroelectrets focuses on the latest progress in fabrication techniques for high temperature resistant ferroelectrets with regular and engineered cavities, strategies for optimizing their piezoelectric performance, and novel applications. The charging mechanisms of bipolar and unipolar ferroelectrets with closed and open‐cavity structures are explained first. Next, the preparation and piezoelectric behavior of ferroelectret films with closed, open and regular cavity structures using various materials are discussed. Three widely used models for predicting the piezoelectric coefficients (d33) are outlined. Methods for enhancing the piezoelectric performance such as optimized cavity design, utilization of fabric electrodes, injection of additional ions, application of DC bias voltage and synergy of foam structure and ferroelectric effect are illustrated. A variety of applications of ferroelectret films in acoustic devices, wearable monitors, pressure sensors and energy harvesters are presented. Finally, the future development trends of ferroelectrets towards fabrication and performance optimization are summarized along with its potential for integration with intelligent systems and large‐scale preparation.This article is protected by copyright. All rights reserved

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Recent Advances in Ferroelectret Fabrication, Performance Optimization, and Applications

Wang,

Zhang,

Qiu

et al. 2024

Advanced Materials

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Internet of Things and Machine Learning Enabled Smart e‐Textile with Exceptional Breathability for Point‐of‐Care Diagnostics

Mondal,

Saini,

Mishra

et al. 2024

Adv Materials Technologies

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In recent years, the convergence of smart electronic textile (e‐textile) and digital technology has emerged as a transformative shift in healthcare, offering innovative solutions for point‐of‐care diagnostics. However, the development of textile electronics with exceptional functionality and comfort still remains challenging. Here, all‐electrospun piezoelectric smart e‐textile empowered is reported by Internet of Things (IoT) and machine learning for advanced point‐of‐care diagnostics. The resulting e‐textile exhibits exceptional breathability (b ≈ 4.13 kg m−2 d−1), flexibility, water‐resistive properties (water contact angle ≈137°), and mechano‐sensitivity of 1.5 V N−1 due to its mechanical‐to‐electrical energy conversion abilities. It can efficiently monitor different critical biomedical healthcare signals, such as, arterial pulse and respiration rate. Importantly, the e‐textile sensor demonstrates remarkable attributes, generating an open circuit voltage of 10.5 V, a short circuit current of 7.7 µA, and power density of 4.2 µW cm−2. Moreover, the e‐textile provides real‐time, non‐invasive monitoring of human physiological movements through IoT. It is worth highlighting that the machine learning showcases an impressive 96% of accuracy in detecting respiratory signals, representing a significant accomplishment. Thus, this e‐textile has enormous potential in remote patient monitoring and early disease detection, aiming to reduce healthcare costs, enhance patient outcomes, and improve the overall quality of medical care.

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Geometry-modulated all organic 3D printed smart PLA fibers for flextension amplified giant mechanical energy harvesting and Machine learning assisted pressure mapping

Mondal,

Mandal

2024

Chemical Engineering Journal

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Surface potential modulation for improved mechanical energy harvesting and sensing in 3D printed biopolymer thermoelectret

Cited by 8 publications

References 71 publications

Recent Advances in Ferroelectret Fabrication, Performance Optimization, and Applications

Recent Advances in Ferroelectret Fabrication, Performance Optimization, and Applications

Internet of Things and Machine Learning Enabled Smart e‐Textile with Exceptional Breathability for Point‐of‐Care Diagnostics

Geometry-modulated all organic 3D printed smart PLA fibers for flextension amplified giant mechanical energy harvesting and Machine learning assisted pressure mapping

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