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Nanomaterials
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Nonlinear Optics in Low-Dimensional Nanomaterials (Second Edition)
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Nonlinear Optics in Low-Dimensional Nanomaterials (Second Edition)

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: 31 January 2026 | Viewed by 1463

Special Issue Editors

Prof. Dr. Dawei Li

E-Mail Website
Guest Editor
School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
Interests: nonlinear optics in low-dimensional systems; scanning probing studies of ferroelectric oxide and polymer thin films; laser processing and spectroscopy of low-dimensional materials; nanofabrication and electronic transport studies of 2D materials (MoS2, ReS2, etc.) and 2D material-based hybrid devices (2D ferroelectric field-effect transistors, etc.)
Special Issues, Collections and Topics in MDPI journals
Dr. Mengmeng Wang

E-Mail Website
Guest Editor
Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: ultrafast laser–matter interaction; nonlinear optics in low-dimensional materials; laser precision manufacturing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nonlinear optics describes the study of optical phenomena related to the interaction between intense light fields and matter. Conventional nonlinear optical devices are based on bulk materials such as LiNbO3, although it should be noted that these nonlinear materials have certain limitations, such as low nonlinear susceptibility, large size dimension, and phase matching issues, that make them unsuitable for the future development of compact, integrated nonlinear optical devices. Recent investigations show that a wide variety of low-dimensional materials can provide strong nonlinear optical responses compared to bulk nonlinear materials. Thus, nonlinear optics in low-dimensional materials has become an active research field, making them a versatile playground for exploring ultrafast light–matter interactions and developing nonlinear nanophotonic and optoelectronic applications that range from wavelength conversion and ultrashort laser pulse generation to quantum photonics and integrated photonics.

This Special Issue aims to present the latest experimental and theoretical research on nonlinear optics in various low-dimensional materials (including 2D, 1D, and 0D materials, van der Waals heterostructures, etc.) and low-dimensional material-based nonlinear optical applications. We invite authors to contribute original research articles and review papers that cover current progress on nonlinear optics in low-dimensional materials. Research topics primarily include, but are not limited to, the following:

  1. Nonlinear optics in two-dimensional materials (graphene, transition metal dichalcogenides, transition metal carbides, black phosphorus, etc.);
  2. Nonlinear optics in one-dimensional materials (nanotubes, nanowires, etc.);
  3. Nonlinear optics in zero-dimensional materials (nanoparticles, quantum dots, etc.);
  4. Nonlinear optics in other novel nano-/microstructures (metasurfaces, 2D/2D heterostructures, 2D/3D heterostructures, etc.);
  5. Modulation of nonlinear optical responses in low-dimensional materials;
  6. Low-dimensional material-based nonlinear optical applications, including laser technology, ultrafast photonics, integrated photonics devices, nonlinear light control, bio-imaging, etc.;
  7. Nonlinear optical characterization methods for low-dimensional materials;
  8. Theoretical studies of nonlinear responses in low-dimensional materials.

Prof. Dr. Dawei Li
Dr. Mengmeng 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 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 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 semimonthly 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 2400 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

  • nonlinear optics
  • low-dimensional materials
  • nanostructures
  • nonlinear optical metasurfaces
  • optical harmonic generation
  • nonlinear optical absorption
  • nonlinear optical characterization
  • nonlinear optical imaging
  • nonlinear optical applications

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Published Papers (3 papers)

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Research

15 pages, 2457 KB  
Article
Efficient Tuning of the Third-Order Nonlinear Optical Properties of Some Functionalized Boron-Dipyrromethene Dyes
by Ioannis Orfanos, Panagiotis Aloukos, Antonia Kaloudi-Chantzea, George Pistolis and Stelios Couris
Nanomaterials 2025, 15(20), 1549; https://doi.org/10.3390/nano15201549 - 11 Oct 2025
Viewed by 230
Abstract
In the present work, the third-order nonlinear optical (NLO) response of some recently synthesized, functionally substituted Boron–Dipyrromethene (BODIPY) derivatives is studied, and their nonlinear optical properties are investigated using the Z-scan technique, employing 4 ns, visible (532 nm) and near-infrared (1064 nm) laser [...] Read more.
In the present work, the third-order nonlinear optical (NLO) response of some recently synthesized, functionally substituted Boron–Dipyrromethene (BODIPY) derivatives is studied, and their nonlinear optical properties are investigated using the Z-scan technique, employing 4 ns, visible (532 nm) and near-infrared (1064 nm) laser excitation. The present findings demonstrate the importance of functionalization of the BODIPY core and the versatility it offers for the modification of the photophysical properties of these chromophores, allowing for the very efficient tuning of both the magnitude and the sign of the nonlinear absorption and refraction of the BODIPYs, making them very promising materials for several optoelectronic applications. The obtained results are discussed and compared with the results of other similar BODIPYs reported in the literature. Full article
(This article belongs to the Special Issue Nonlinear Optics in Low-Dimensional Nanomaterials (Second Edition))
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13 pages, 8905 KB  
Article
Giant Modulation of Microstructure and Ferroelectric/Piezoelectric Responses in Pb(Zr,Ti)O3 Ultrathin Films via Single-Pulse Femtosecond Laser
by Bin Wang, Mingchen Du, Hu Wang, Mengmeng Wang and Dawei Li
Nanomaterials 2025, 15(18), 1450; https://doi.org/10.3390/nano15181450 - 20 Sep 2025
Viewed by 405
Abstract
Ferroelectric oxides, such as Pb(Zr,Ti)O3 (PZT), have been shown to maintain stable ferroelectricity even in ultrathin film configurations. However, achieving controllable modulation of microstructure and physical responses in these ultrathin films remains challenging, limiting their potential applications in modern nanoelectronics and optoelectronics. [...] Read more.
Ferroelectric oxides, such as Pb(Zr,Ti)O3 (PZT), have been shown to maintain stable ferroelectricity even in ultrathin film configurations. However, achieving controllable modulation of microstructure and physical responses in these ultrathin films remains challenging, limiting their potential applications in modern nanoelectronics and optoelectronics. Here, we propose a single-pulse femtosecond (fs) laser micromachining technique for high-precision engineering of microstructure and ferroelectric/piezoelectric responses in ultrathin PZT films. The results show that various microstructures can be selectively fabricated through precise control of fs laser fluence. Specifically, nano-concave arrays are formed via low-fluence laser irradiation, which is mainly attributed to the fs laser peening effect. In contrast, nano-volcano (nano-cave) structures are generated when the laser fluence is close to or reaches the ablation threshold. Additionally, applying an fs laser pulse with fluence exceeding a critical threshold enables the formation of nano-cave structures with controlled depth and width in PZT/Pt/SiO2 multilayers. Piezoresponse force microscopy measurements demonstrate that the laser peening process significantly enhances the piezoelectric response while exerting minimal influence on the coercive field of PZT thin films. This improvement is attributed to the enhanced electromechanical energy transfer and concentrated compressive stresses distribution in PZT thin films resulting from the laser peening effect. Our study not only offers an effective strategy for microstructure and property engineering in ferroelectric materials at the nanoscale but also provides new insights into the underlying mechanism of ultrafast laser processing in ferroelectric thin films. Full article
(This article belongs to the Special Issue Nonlinear Optics in Low-Dimensional Nanomaterials (Second Edition))
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30 pages, 8981 KB  
Article
Vibration Transmission Characteristics of Bistable Nonlinear Acoustic Metamaterials Based on Effective Negative Mass
by Ming Gao, Guodong Shang, Jing Guo, Lingfeng Xu and Guiju Fan
Nanomaterials 2025, 15(16), 1269; https://doi.org/10.3390/nano15161269 - 17 Aug 2025
Viewed by 613
Abstract
The growing demand for low-frequency, broadband vibration and noise suppression technologies in next-generation mechanical equipment has become increasingly urgent. Effective negative mass locally resonant structures represent one of the most paradigmatic classes of acoustic metamaterials. Their unique elastic wave bandgaps enable efficient suppression [...] Read more.
The growing demand for low-frequency, broadband vibration and noise suppression technologies in next-generation mechanical equipment has become increasingly urgent. Effective negative mass locally resonant structures represent one of the most paradigmatic classes of acoustic metamaterials. Their unique elastic wave bandgaps enable efficient suppression of low-frequency vibrations, while inherent nonlinear effects provide significant potential for the design and tunability of these bandgaps. To achieve ultra-low-frequency and ultra-broadband vibration attenuation, this study employs Duffing oscillators exhibiting negative-stiffness characteristics as structural elements, establishing a bistable nonlinear acoustic-metamaterial mechanical model. Subsequently, based on the effective negative mass local resonance theory, the perturbation solution for the dispersion curves is derived using the perturbation method. Finally, the effects of mass ratio, stiffness ratio, and nonlinear term on the starting and cutoff frequencies of the bandgap are analyzed, and key geometric parameters influencing the design of ultra-low vibration reduction bandgaps are comprehensively investigated. Subsequently, the influence of external excitation amplitude and the nonlinear term on bandgap formation is analyzed using numerical computation methods. Finally, effective positive mass, negative mass, and zero-mass phenomena within distinct frequency ranges of the bandgap and passband are examined to validate the theoretically derived results. The findings demonstrate that, compared to a positive-stiffness system, the bandgap of the bistable nonlinear acoustic metamaterial incorporating negative-stiffness Duffing oscillators shifts to higher frequencies and widens by a factor of 2. The external excitation amplitude F changes the bandgap starting frequency and cutoff frequency. As F increases, the starting frequency rises while the cutoff frequency decreases, resulting in a narrowing of the bandgap width. Within the frequency range bounded by the bandgap starting frequency and cutoff frequency, the region between the resonance frequency and cutoff frequency corresponds to an effective negative mass state, whereas the region between the bandgap starting frequency and resonance frequency exhibits an effective positive mass state. Critically, the bandgap encompasses both effective positive mass and negative mass regions, wherein vibration propagation is suppressed. Concurrently, a zero-mass state emerges within this structure, with its frequency precisely coinciding with the bandgap cutoff frequency. This study provides a theoretical foundation and practical guidelines for designing nonlinear acoustic metamaterials targeting ultra-low-frequency and ultra-broadband vibration and noise mitigation. Full article
(This article belongs to the Special Issue Nonlinear Optics in Low-Dimensional Nanomaterials (Second Edition))
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