Special Issue "Smart Nanogenerators"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: closed (31 July 2018)

Special Issue Editors

Guest Editor
Dr. Zong-Hong Lin

Institute of Biomedical Engineering, National Tsing Hua University
Website | E-Mail
Interests: energy harvesting; self-powered sensor; nanogenerator; wearable electronics; controllable disinfection system
Guest Editor
Prof. Dr. Jyh-Ming Wu

Department of Materials Science and Engineering, National Tsing Hua University
Website | E-Mail
Interests: piezotronics and piezoelectric nanogenerators; photocatalysis and smart sensor materials; flexible electronic devices and advanced functional materials
Guest Editor
Prof. Dr. Chuan-Pu Liu

Department of Materials Science and Engineering, National Cheng-Kung University
Website | E-Mail
Interests: piezotronics and nanogenerators; thermoelectric devices based on nanowires, sensors, lithion ion battery, semiconductor nanomaterials and nanodevices
Guest Editor
Prof. Dr. Zhong Lin Wang

School of Materials Science & Engineering, Georgia Institute of Technology and Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
Website | E-Mail
Phone: +1-404-894-8008
Fax: +1-404-894-9140
Interests: nanogenerators and self-powered nanosystems; piezotronics for smart systems; piezo-phototronics for energy science and optoelectronics; hybrid cells for energy harvesting

Special Issue Information

Dear Colleagues,

Renewable energy, as an alternative solution to fossil fuels, has triggered increasing research efforts from both industry and academia in recent decades. The attractive characteristics of renewable energy include its reduced carbon emissions, secure long-term energy supply, and less dependence on fossil fuels, all of which are mandatory for the sustainable development of the environment. While sustainable energy is urgently demanded, nanogenerators is one of the most promising candidates to fulfill the aforementioned needs, and thus has been developed in varied prototypes to harvest mechanical and thermal energy in the environment, such as piezoelectric nanogenerator proposed by Prof. Zhong Lin Wang in 2006, which converts tiny-scale mechanical energy into electricity. Since 2012, the development of triboelectric nanogenerator (also by Prof. Zhong Lin Wang) has demonstrated itself as an efficient power source to directly drive microelectronics or charge capacitor/battery for a self-powered sensing system. In addition to the benefits of cost-effectiveness, easy fabrication, and robust capability, nanogenerators are “smart” in their versatility to function beyond energy harvesting and work as active/self-powered nanosensors with no external input power, which are mini-sized and eco-friendly to eliminate the use of environmentally harmful materials in battery. The development of these nanogenerators has pushed its feasible applications in a wide range of fields. This Special Issue of Nanomaterials will attempt to cover the recent achievements in the fields of nanogenerators and self-powered nanosensors.

Dr. Zong-Hong Lin
Prof. Dr. Jyh-Ming Wu
Prof. Dr. Chuan-Pu Liu
Prof. Dr. Zhong Lin Wang
Guest Editors

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 papers will be 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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Nanomaterials 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 1500 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

  • Nanogenerator
  • self-powered nanosensor
  • energy harvesting
  • contact electrification
  • piezoelectric nanomaterials
  • piezotronics
  • pyroelectric effect
  • thermoelectricity
  • wearable electronics

Published Papers (2 papers)

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Research

Open AccessArticle Porous α-Fe2O3@C Nanowire Arrays as Flexible Supercapacitors Electrode Materials with Excellent Electrochemical Performances
Nanomaterials 2018, 8(7), 487; https://doi.org/10.3390/nano8070487
Received: 16 May 2018 / Revised: 23 June 2018 / Accepted: 25 June 2018 / Published: 1 July 2018
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Abstract
Porous α-Fe2O3 nanowire arrays coated with a layer of carbon shell have been prepared by a simple hydrothermal route. The as-synthesized products show an excellent electrochemical performance with high specific capacitance and good cycling life after 9000 cycles. A solid
[...] Read more.
Porous α-Fe2O3 nanowire arrays coated with a layer of carbon shell have been prepared by a simple hydrothermal route. The as-synthesized products show an excellent electrochemical performance with high specific capacitance and good cycling life after 9000 cycles. A solid state asymmetric supercapacitor (ASC) with a 2 V operation voltage window has been assembled by porous α-Fe2O3/C nanowire arrays as the anode materials, and MnO2 nanosheets as the cathode materials, which gives rise to a maximum energy density of 30.625 Wh kg−1and a maximum power density of 5000 W kg−1 with an excellent cycling performance of 82% retention after 10,000 cycles. Full article
(This article belongs to the Special Issue Smart Nanogenerators)
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Open AccessArticle Piezoelectric Response of Aligned Electrospun Polyvinylidene Fluoride/Carbon Nanotube Nanofibrous Membranes
Nanomaterials 2018, 8(6), 420; https://doi.org/10.3390/nano8060420
Received: 26 May 2018 / Revised: 7 June 2018 / Accepted: 8 June 2018 / Published: 10 June 2018
Cited by 1 | PDF Full-text (12952 KB) | HTML Full-text | XML Full-text
Abstract
Polyvinylidene fluoride (PVDF) shows piezoelectricity related to its β-phase content and mechanical and electrical properties influenced by its morphology and crystallinity. Electrospinning (ES) can produce ultrafine and well-aligned PVDF nanofibers. In this study, the effects of the presence of carbon nanotubes (CNT) and
[...] Read more.
Polyvinylidene fluoride (PVDF) shows piezoelectricity related to its β-phase content and mechanical and electrical properties influenced by its morphology and crystallinity. Electrospinning (ES) can produce ultrafine and well-aligned PVDF nanofibers. In this study, the effects of the presence of carbon nanotubes (CNT) and optimized ES parameters on the crystal structures and piezoelectric properties of aligned PVDF/CNT nanofibrous membranes were examined. The optimal β content and piezoelectric coefficient (d33) of the aligned electrospun PVDF reached 88% and 27.4 pC/N; CNT addition increased the β-phase content to 89% and d33 to 31.3 pC/N. The output voltages of piezoelectric units with aligned electrospun PVDF/CNT membranes increased linearly with applied loading and showed good stability during cyclic dynamic compression and tension. The sensitivities of the piezoelectric units with the membranes under dynamic compression and tension were 2.26 mV/N and 4.29 mV/%, respectively. In bending tests, the output voltage increased nonlinearly with bending angle because complicated forces were involved. The output of the aligned membrane-based piezoelectric unit with CNT was 1.89 V at the bending angle of 100°. The high electric outputs indicate that the aligned electrospun PVDF/CNT membranes are potentially effective for flexible wearable sensor application with high sensitivity. Full article
(This article belongs to the Special Issue Smart Nanogenerators)
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