Micro Energy Harvesting Technologies and Their Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: 30 May 2025 | Viewed by 933

Special Issue Editors


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Guest Editor
Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051, China
Interests: energy harvesting; nanogenerators; human-computer interaction
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Institute of Artificial Intelligence, School of Future Technology, Shanghai University, Shanghai 200444, China
Interests: energy harvesting; ocean flow sensing; Mppt algorithm

Special Issue Information

Dear Colleagues,

Micro-energy harvesting technology represents a groundbreaking class of advancements harnessing ambient energy on a micro-scale. It surpasses traditional power sources, exploiting vibrations, temperature gradients, light, and RF signals for electrical energy generation. Widespread applications include wearable gadgets, IoT sensors, environmental monitoring, and self-powered biomedical implants. Rapid progress drives material science, device physics, and system integration innovations.

The rapid pace of progress in this domain has sparked a surge of interest among researchers and engineers alike, fostering advancements in material science, device physics, and system integration. The exploration of novel materials, micro-fabrication techniques, and energy conversion mechanisms has become paramount to enhancing the efficiency, durability, and scalability of micro-energy harvesting systems.

This section invites contributions on energy conversion mechanisms, material innovations, and system designs. Topics of interest include the following:

  • Innovative energy conversion mechanisms (piezoelectric, thermoelectric, photovoltaic, electromagnetic);
  • Material advancements for enhanced performance (high-efficiency piezo-/thermoelectric materials, light-absorbing nanostructures);
  • System-level design optimizations for power output and reliability;
  • Experimental validation and performance evaluation;
  • Integration strategies for IoT networks, wearable devices, and biomedical implants;
  • Novel applications in remote sensing, sustainable energy, and personalized healthcare;

We aim to foster collaboration, showcase breakthroughs, and inspire future research directions in micro-energy harvesting technology.

Prof. Dr. Jian He
Dr. Ying Gong
Guest Editors

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Keywords

  • energy harvesting
  • energy conversion
  • energy management
  • energy parameter prediction and control
  • micro-energy harvesting materials
  • energy harvesting device applications

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Published Papers (1 paper)

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Research

9 pages, 5465 KiB  
Article
Enhanced Hybrid Nanogenerator Based on PVDF-HFP and PAN/BTO Coaxially Structured Electrospun Nanofiber
by Jin-Uk Yoo, Dong-Hyun Kim, Eun-Su Jung, Tae-Min Choi, Hwa-Rim Lee and Sung-Gyu Pyo
Micromachines 2024, 15(9), 1171; https://doi.org/10.3390/mi15091171 - 21 Sep 2024
Viewed by 759
Abstract
Nanogenerators have garnered significant interest as environmentally friendly and potential energy-harvesting systems. Nanogenerators can be broadly classified into piezo-, tribo-, and hybrid nanogenerators. The hybrid nanogenerator used in this experiment is a nanogenerator that uses both piezo and tribo effects. These hybrid nanogenerators [...] Read more.
Nanogenerators have garnered significant interest as environmentally friendly and potential energy-harvesting systems. Nanogenerators can be broadly classified into piezo-, tribo-, and hybrid nanogenerators. The hybrid nanogenerator used in this experiment is a nanogenerator that uses both piezo and tribo effects. These hybrid nanogenerators have the potential to be used in wearable electronics, health monitoring, IoT devices, and more. In addition, the versatility of the material application in electrospinning makes it an ideal complement to hybrid nanogenerators. However, despite their potential, several experimental variables, biocompatibility, and harvesting efficiency require improvement in the research field. In particular, maximizing the output voltage of the fibers is a significant challenge. Based on this premise, this study aims to characterize hybrid nanogenerators (HNGs) with varied structures and material combinations, with a focus on identifying HNGs that exhibit superior piezoelectric- and triboelectric-induced voltage. In this study, several HNGs based on coaxial structures were fabricated via electrospinning. PVDF-HFP and PAN, known for their remarkable electrospinning properties, were used as the primary materials. Six combinations of these two materials were fabricated and categorized into homo and hetero groups based on their composition. The output voltage of the hetero group surpassed that of the homo group, primarily because of the triboelectric-induced voltage. Specifically, the overall output voltage of the hetero group was higher. In addition, the combination group with the most favorable voltage characteristics combined PVDF-HFP@PAN(BTO) and PAN hollow, boasting an output voltage of approximately 3.5 V. Full article
(This article belongs to the Special Issue Micro Energy Harvesting Technologies and Their Applications)
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