Special Issue "Frontiers of Light Science: Novel Concepts, Nanomaterials, Nanostructures, and Applications"

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

Deadline for manuscript submissions: closed (30 September 2021).

Special Issue Editors

Dr. Gianluigi Zito
E-Mail Website
Guest Editor
Institute of Applied Sciences and Intelligent Systems, Italian National Research Council, Naples, Italy
Interests: photonics, nano-optics, surface-enhanced spectroscopies, non-linear optics, energy conversion, biosensing, fiber optics.
Dr. Silvia Romano
E-Mail Website
Guest Editor
Institute of Applied Sciences and Intelligent Systems, Italian National Research Council, Naples, Italy
Interests: nanophotonics, all-dielectric media, optical sensors, surface-enhanced spectroscopy, non-linear optics, energy conversion

Special Issue Information

Dear Colleagues,

Confinement of electromagnetic waves by subwavelength dielectric and metallic structures enables intriguing applications, including, among others, enhanced light–matter interaction for lasing and spectroscopy, novel imaging techniques, new concept antennas for radiation/polarization patterning and structured light generation, highly versatile and ultrasensitive sensing, ultrafast modulation, unprecedented waveguiding possibilities, and groundbreaking light manipulation with spin-optics and topological photonics. The substantial frontier expansion witnessed today is pushed, on one side, by new insight into the fundamental physics of light, and on the other by cutting-edge technologies for nanomaterial engineering and targeted interdisciplinary applications.

In this Special Issue, we invite researchers to contribute Articles or topic Reviews that will stimulate the continuing efforts on the understanding and exploring light science from novel concepts in photonics and nano-optics to nanomaterials and nanostructures and their applications. Potential topics include but are not limited to:

Topics:

  1. Novel designs for metamaterials/metasurfaces/nanomaterials;
  2. Metamaterials/metasurfaces/nanomaterials for imaging, spectroscopy and nano-optics;
  3. Two-dimensional materials and devices;
  4. Active and tunable metamaterials/metasurfaces/nanomaterials;
  5. Nonlinear nanophotonics;
  6. Topological photonics;
  7. Lasing, filtering and sensing;
  8. Inverse design in photonics: algorithms and applications;
  9. Photonic devices and systems for machine learning.

Dr. Gianluigi Zito
Dr. Silvia Romano
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 2200 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

  • nanomaterials
  • nanostructures
  • metasurfaces
  • metamaterials
  • nanophotonics
  • nano-optics
  • sensing
  • energy conversion
  • topological photonics
  • intelligent systems

Published Papers (3 papers)

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Research

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Article
Strain Sensor via Wood Anomalies in 2D Dielectric Array
Nanomaterials 2021, 11(4), 1022; https://doi.org/10.3390/nano11041022 - 16 Apr 2021
Viewed by 514
Abstract
Optical sensing is one of many promising applications for all-dielectric photonic materials. Herein, we present an analytical and numerical study on the strain-responsive spectral properties of a bioinspired sensor. The sensor structure contains a two-dimensional periodic array of dielectric nanodisks to mimic the [...] Read more.
Optical sensing is one of many promising applications for all-dielectric photonic materials. Herein, we present an analytical and numerical study on the strain-responsive spectral properties of a bioinspired sensor. The sensor structure contains a two-dimensional periodic array of dielectric nanodisks to mimic the optical behavior of grana lamellae inside chloroplasts. To accumulate a noticeable response, we exploit the collective optical mode in grana ensemble. In higher plants, such a mode appears as Wood’s anomaly near the chlorophyll absorption line to control the photosynthesis rate. The resonance is shown persistent against moderate biological disorder and deformation. Under the stretching or compression of a symmetric structure, the mode splits into a couple of polarized modes. The frequency difference is accurately detected. It depends on the stretch coefficient almost linearly providing easy calibration of the strain-sensing device. The sensitivity of the considered structure remains at 5 nm/% in a wide range of strain. The influence of the stretching coefficient on the length of the reciprocal lattice vectors, as well as on the angle between them, is taken into account. This adaptive phenomenon is suggested for sensing applications in biomimetic optical nanomaterials. Full article
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Article
Numerical Study on Enhanced Line Focusing via Buried Metallic Nanowire Assisted Binary Plate
Nanomaterials 2021, 11(2), 281; https://doi.org/10.3390/nano11020281 - 22 Jan 2021
Cited by 1 | Viewed by 438
Abstract
Line focusing, which collects light into a line rather than a single point, has an advantage on variable fields such as machining and imaging. The 1-dimensional metallic zone plate is one of the candidates for line focusing, which is ultra-thin and simple to [...] Read more.
Line focusing, which collects light into a line rather than a single point, has an advantage on variable fields such as machining and imaging. The 1-dimensional metallic zone plate is one of the candidates for line focusing, which is ultra-thin and simple to fabricate. Metallic nano-slits can replace the metal blocked region to increase the efficiency, however, the efficiency and stability are still low. Therefore, this paper proposes a structure with an additional dielectric layer to protect the metallic nano-slit layer—a buried metallic wire structure—and verify the idea based on numerical simulations. Two structures are proposed. In terms of stability, a flat surface structure is proposed and a corrugated surface structure with a consistent thickness with the nano-slit is proposed which has low fabrication difficulty. The optimization of the buried wire structure and performance after applying the buried wire structure to the dual-line focusing plate is calculated by numerical simulation. Finally, it was shown that the electric field intensity was 2.13 times greater. Full article
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Review

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Review
Surface Nano-Patterning for the Bottom-Up Growth of III-V Semiconductor Nanowire Ordered Arrays
Nanomaterials 2021, 11(8), 2079; https://doi.org/10.3390/nano11082079 - 16 Aug 2021
Viewed by 510
Abstract
Ordered arrays of vertically aligned semiconductor nanowires are regarded as promising candidates for the realization of all-dielectric metamaterials, artificial electromagnetic materials, whose properties can be engineered to enable new functions and enhanced device performances with respect to naturally existing materials. In this review [...] Read more.
Ordered arrays of vertically aligned semiconductor nanowires are regarded as promising candidates for the realization of all-dielectric metamaterials, artificial electromagnetic materials, whose properties can be engineered to enable new functions and enhanced device performances with respect to naturally existing materials. In this review we account for the recent progresses in substrate nanopatterning methods, strategies and approaches that overall constitute the preliminary step towards the bottom-up growth of arrays of vertically aligned semiconductor nanowires with a controlled location, size and morphology of each nanowire. While we focus specifically on III-V semiconductor nanowires, several concepts, mechanisms and conclusions reported in the manuscript can be invoked and are valid also for different nanowire materials. Full article
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