Special Issue "Laser-Based Synthesis, Processing, and Characterization of 2D Quantum Materials"

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

Deadline for manuscript submissions: 7 October 2020.

Special Issue Editor

Dr. Masoud Mahjouri-Samani
Website
Guest Editor
Department of Electrical and Computer Engineering, Auburn University, Auburn, AL, 36849, USA
Interests: Laser Material Synthesis; Laser Processing; Laser Characterization; Real-time Optical Diagnostics; 2D Quantum Materials; Nanodevices; Advanced Manufacturing

Special Issue Information

Dear Colleagues,                

Two-dimensional (2D) quantum materials have recently emerged as an exciting class of atomically thin structures that possess extraordinary optical, electrical, and mechanical properties. Motivated by their properties and potential applications, there has been a worldwide interest in research areas ranging from synthesis and processing to characterization and functionality of 2D materials. Interestingly, the strong light interactions with 2D materials not only govern their behavior but can also be used as versatile synthesis, processing, and diagnostic tools to precisely tailor their structures and probe their properties. The spatial and temporal tunability, controlled energy, and power densities of laser beams enable a broad spectrum of applications in the synthesis and processing of 2D quantum materials that are not accessible by other means. This Special Issue of Nanomaterials aims to document recent advances in the application of lasers for the synthesis, processing, and characterization of 2D materials and heterostructures. The format of welcomed articles includes full papers, communications, and reviews. Potential topics include, but are not limited to:

  1. synthesizing of 2D quantum materials and heterostructures by laser-based methods (e.g., PLD, LCVD);
  2. tailoring the structure and properties of 2D materials by laser-based processing approaches (e.g., defect engineering, doping, thinning, direct writing);
  3. integrating 2D materials into various substrates and device structures by laser-based strategies;
  4. investigating the structure and properties of 2D materials by laser-based characterization methods (e.g., Raman, Photoluminescence (PL), ultrafast pump-probe measurements); and
  5. manipulating the charge and spin in 2D materials by lasers.

Dr. Masoud Mahjouri-Samani
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 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 2000 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

  • laser synthesis of 2D materials
  • laser processing of 2D materials
  • laser characterization of 2D materials
  • laser-induced functionality in 2D materials

Published Papers (1 paper)

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Research

Open AccessArticle
Gas-Phase Formation of Highly Luminescent 2D GaSe Nanoparticle Ensembles in a Nonequilibrium Laser Ablation Process
Nanomaterials 2020, 10(5), 908; https://doi.org/10.3390/nano10050908 - 08 May 2020
Abstract
Interest in layered two-dimensional (2D) materials has been escalating rapidly over the past few decades due to their promising optoelectronic and photonic properties emerging from their atomically thin 2D structural confinements. When these 2D materials are further confined in lateral dimensions toward zero-dimensional [...] Read more.
Interest in layered two-dimensional (2D) materials has been escalating rapidly over the past few decades due to their promising optoelectronic and photonic properties emerging from their atomically thin 2D structural confinements. When these 2D materials are further confined in lateral dimensions toward zero-dimensional (0D) structures, 2D nanoparticles and quantum dots with new properties can be formed. Here, we report a nonequilibrium gas-phase synthesis method for the stoichiometric formation of gallium selenide (GaSe) nanoparticles ensembles that can potentially serve as quantum dots. We show that the laser ablation of a target in an argon background gas condenses the laser-generated plume, resulting in the formation of metastable nanoparticles in the gas phase. The deposition of these nanoparticles onto the substrate results in the formation of nanoparticle ensembles, which are then post-processed to crystallize or sinter the nanoparticles. The effects of background gas pressures, in addition to crystallization/sintering temperatures, are systematically studied. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence (PL) spectroscopy, and time-correlated single-photon counting (TCSPC) measurements are used to study the correlations between growth parameters, morphology, and optical properties of the fabricated 2D nanoparticle ensembles. Full article
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