Advances in Energy Harvesters and Nanogenerators: Innovations for Sustainable Energy Solutions

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

Deadline for manuscript submissions: closed (28 February 2026) | Viewed by 1273

Special Issue Editor

Special Issue Information

Dear Colleagues,

As global energy consumption continues to escalate, the search for sustainable, efficient energy sources has become imperative for mitigating the environmental impact of traditional fossil fuels. In this context, energy harvesting and nanogeneration have emerged as pivotal technologies, particularly in the advancement of smart technologies and the Internet of Things (IoT). Innovations for capturing ambient energy from sources like mechanical vibrations, thermal gradients, and electromagnetic fields offer critical solutions for powering small electronic devices, sensors, and wearables.

With the growing demand for self-sustaining systems, energy harvesters and nanogenerators play a central role in the development of energy-efficient, smart systems. These technologies promise to revolutionize applications in fields such as health monitoring, wearables, and smart cities by enabling autonomous power solutions for IoT devices and other low-energy electronics. Recent breakthroughs in nanomaterials, piezoelectric, thermoelectric, and triboelectric technologies, along with advancements in the fabrication of micro- and nanoscale devices, are driving significant progress in this field.

This Special Issue, entitled "Advances in Energy Harvesters and Nanogenerators: Innovations for Sustainable Energy Solutions," welcomes cutting-edge research that advances both the understanding and application of these technologies across various domains, emphasizing original research articles, reviews, and technical notes that explore a wide range of topics, including the following:

  • Novel and sustainable materials for energy harvesters.
  • Techniques for fabricating micro- and nanoscale devices.
  • Piezoelectric, thermoelectric, and triboelectric technologies.
  • Applications of energy harvesting and nanogenerators in wearables, health monitoring, and smart systems.

Through these contributions, we aim to highlight how recent advancements are shaping the future of sustainable energy solutions, paving the way for cleaner, more efficient power systems that align with the global shift toward renewable energy.

Dr. Jianxiong Zhu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • energy harvesting
  • nanogenerators
  • sustainable energy
  • wearable technology
  • piezoelectric materials
  • thermoelectric devices
  • triboelectric energy
  • smart systems and IoT

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

14 pages, 3035 KB  
Article
A Wideband Trapezoidal Cantilever Beam PVEH with a P-SSHI-QVR Circuit for Low-Frequency Applications
by Yan Jin, Boyi Feng, Yubo Jin, Yiwen Lv, Zhifan Zhao, Jiaqi Ju and Zhengguang Shi
Micromachines 2025, 16(12), 1414; https://doi.org/10.3390/mi16121414 - 16 Dec 2025
Cited by 1 | Viewed by 598
Abstract
Piezoelectric vibration energy harvesters (PVEHs) have demonstrated their potential for sustainable energy generation from diverse ambient vibrations for low-power devices and systems. However, great challenges remain concerning harvesting more energy from low-frequency input sources and broadband random excitations. In this paper, a novel [...] Read more.
Piezoelectric vibration energy harvesters (PVEHs) have demonstrated their potential for sustainable energy generation from diverse ambient vibrations for low-power devices and systems. However, great challenges remain concerning harvesting more energy from low-frequency input sources and broadband random excitations. In this paper, a novel PVEH featuring a lead zirconate titanate (PZT) hollowed trapezoidal cantilever beam is proposed, simulated, optimized and fabricated to effectively broaden its output bandwidth at low frequency ranges. Under 1 g acceleration, the traditional solid PVEH showed a resonant frequency of 47.80 Hz and a maximum output power density of 14.22 mW/cm3, while the proposed PVEH showed two resonant frequencies of 21.30 Hz and 50.40 Hz. Compared to the traditional solid PVEH, the first-order resonant frequency was reduced by 55.44% and the corresponding maximum output power density was 3.3 times higher in the proposed PVEH. Furthermore, a parallel synchronized switch harvesting inductor quadruple voltage rectifier (P-SSHI-QVR) circuit is designed to extract energy from the proposed PVEH. For the proposed PVEH incorporating the P-SSHI-QVR circuit, the maximum stored voltage was 20.49 V at a first-order resonant frequency of 21.30 Hz and 5.68 V at a second-order resonant frequency of 50.40 Hz, with corresponding maximum stored powers of 36.89 μW and 2.97 μW, respectively. This study verified the feasibility of the optimized design through simulation and experimental comparison. Full article
Show Figures

Figure 1

Back to TopTop