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Nanomaterials
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Recent Advances in Nanophotonics Based on Thin Films and Nanostructures
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Recent Advances in Nanophotonics Based on Thin Films and Nanostructures

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

Deadline for manuscript submissions: 20 June 2024 | Viewed by 2231

Special Issue Editor

Prof. Dr. Feng Li

E-Mail Website
Guest Editor
School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Interests: nanophotonics; optical devices; optoelectronics; optical topological structures and devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent decades, the integration between photonics, electronics and mechanics has played an increasingly significant role in modern industries. Notably, optoelectronic devices with features including a small size and high degree of integration constitute a crucial aspect in the development of information technology, and the recent advances in nanophotonics has provided remarkable new knowledge in terms of fundamental research. These nanophotonic devices are mostly made from thin films and nanostructures of solid states or other kinds.

The present Special Issue of Nanomaterials is aimed at presenting the current state of the art in the area of nanophotonics and nano-optics physically based on thin films and nanostructures. We welcome submissions of manuscripts on topics that include, but are not limited to, the growth, fabrication and characterization of optical thin films; micro- and nanoscale optical materials; micro/nano-optoelectronic devices; microcavities; nanolasers; metamaterials and metasurfaces; plasmonics and polaritonics; and light–matter interaction in solid-state and atomic micro/nanostructures. We are expecting original research articles as well as review articles.

Prof. Dr. Feng Li
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 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 2900 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

  • nanophotonics
  • nanostructures
  • thin films
  • optoelectronics
  • optical topological structures and devices

Published Papers (2 papers)

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Research

11 pages, 4046 KiB  
Article
Continuous-Wave Pumped Monolayer WS2 Lasing for Photonic Barcoding
by Haodong Cheng, Junyu Qu, Wangqi Mao, Shula Chen and Hongxing Dong
Nanomaterials 2024, 14(7), 614; https://0-doi-org.brum.beds.ac.uk/10.3390/nano14070614 - 30 Mar 2024
Viewed by 593
Abstract
Micro/nano photonic barcoding has emerged as a promising technology for information security and anti-counterfeiting applications owing to its high security and robust tamper resistance. However, the practical application of conventional micro/nano photonic barcodes is constrained by limitations in encoding capacity and identification verification [...] Read more.
Micro/nano photonic barcoding has emerged as a promising technology for information security and anti-counterfeiting applications owing to its high security and robust tamper resistance. However, the practical application of conventional micro/nano photonic barcodes is constrained by limitations in encoding capacity and identification verification (e.g., broad emission bandwidth and the expense of pulsed lasers). Herein, we propose high-capacity photonic barcode labels by leveraging continuous-wave (CW) pumped monolayer tungsten disulfide (WS2) lasing. Large-area, high-quality monolayer WS2 films were grown via a vapor deposition method and coupled with external cavities to construct optically pumped microlasers, thus achieving an excellent CW-pumped lasing with a narrow linewidth (~0.39 nm) and a low threshold (~400 W cm−2) at room temperature. Each pixel within the photonic barcode labels consists of closely packed WS2 microlasers of varying sizes, demonstrating high-density and nonuniform multiple-mode lasing signals that facilitate barcode encoding. Notably, CW operation and narrow-linewidth lasing emission could significantly simplify detection. As proof of concept, a 20-pixel label exhibits a high encoding capacity (2.35 × 10108). This work may promote the advancement of two-dimensional materials micro/nanolasers and offer a promising platform for information encoding and security applications. Full article
(This article belongs to the Special Issue Recent Advances in Nanophotonics Based on Thin Films and Nanostructures)
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12 pages, 3785 KiB  
Article
Preparation of SiO2@Au Nanoparticle Photonic Crystal Array as Surface-Enhanced Raman Scattering (SERS) Substrate
by Dingyu Song, Tianxing Wang and Lin Zhuang
Nanomaterials 2023, 13(15), 2156; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13152156 - 25 Jul 2023
Viewed by 1263
Abstract
Surface-enhanced Raman scattering technology plays a prominent role in spectroscopy. By introducing plasmonic metals and photonic crystals as a substrate, SERS signals can achieve further enhancement. However, the conventional doping preparation methods of these SERS substrates are insufficient in terms of metal-loading capacity [...] Read more.
Surface-enhanced Raman scattering technology plays a prominent role in spectroscopy. By introducing plasmonic metals and photonic crystals as a substrate, SERS signals can achieve further enhancement. However, the conventional doping preparation methods of these SERS substrates are insufficient in terms of metal-loading capacity and the coupling strength between plasmonic metals and photonic crystals, both of which reduce the SERS activity and reproducibility of SERS substrates. In this work, we report an approach combining spin-coating, surface modification, and in situ reduction methods. Using this approach, a photonic crystal array of SiO2@Au core–shell structure nanoparticles was prepared as a SERS substrate (SiO2@Au NP array). To study the SERS properties of these substrates, Rhodamine 6G was employed as the probe molecule. Compared with a Au-SiO2 NP array prepared using doping methods, the SiO2@Au NP array presented better SERS properties, and it reproduced the SERS spectra after one month. The detection limit of the Rhodamine 6G on SiO2@Au NP array reached 1 × 10−8 mol/L; furthermore, the relative standard deviation (9.82%) of reproducibility and the enhancement factor (1.51 × 106) were evaluated. Our approach provides a new potential option for the preparation of SERS substrates and offers a potential advantage in trace contaminant detection, and nondestructive testing. Full article
(This article belongs to the Special Issue Recent Advances in Nanophotonics Based on Thin Films and Nanostructures)
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