2D Nanomaterials - Explore the Science & Experts | ideXlab

Scan Science and Technology

Contact Leading Edge Experts & Companies

2D Nanomaterials

The Experts below are selected from a list of 17487 Experts worldwide ranked by ideXlab platform

2D Nanomaterials – Free Register to Access Experts & Abstracts

Hua Zhang – One of the best experts on this subject based on the ideXlab platform.

  • 2D Nanomaterials: beyond graphene and transition metal dichalcogenides.
    Chemical Society reviews, 2018
    Co-Authors: Hua Zhang, Hui-ming Cheng
    Abstract:

    Guest Editors Hua Zhang, Hui-Ming Cheng and Peide Ye introduce the 2D Nanomaterials: beyond graphene and transition metal dichalcogenides themed issue of Chemical Society Reviews.

  • 2D Nanomaterials: graphene and transition metal dichalcogenides
    Chemical Society reviews, 2018
    Co-Authors: Hua Zhang, Manishkumar Chhowalla, Zhongfan Liu
    Abstract:

    Guest editors Hua Zhang, Manish Chhowalla and Zhongfan Liu introduce the 2D Nanomaterials: graphene and transition metal dichalcogenides themed issue of Chemical Society Reviews.

  • Production of Two-Dimensional Nanomaterials via Liquid-Based Direct Exfoliation
    Small (Weinheim an der Bergstrasse Germany), 2015
    Co-Authors: Liyong Niu, Hua Zhang, Manishkumar Chhowalla, Jonathan N. Coleman, Hyeon Suk Shin, Zijian Zheng
    Abstract:

    Tremendous efforts have been devoted to the synthesis and application of two-dimensional (2D) Nanomaterials due to their extraordinary and unique properties in electronics, photonics, catalysis, etc., upon exfoliation from their bulk counterparts. One of the greatest challenges that scientists are confronted with is how to produce large quantities of 2D Nanomaterials of high quality in a commercially viable way. This review summarizes the state-of-the-art of the production of 2D Nanomaterials using liquid-based direct exfoliation (LBE), a very promising and highly scalable wet approach for synthesizing high quality 2D Nanomaterials in mild conditions. LBE is a collection of methods that directly exfoliates bulk layered materials into thin flakes of 2D Nanomaterials in liquid media without any, or with a minimum degree of, chemical reactions, so as to maintain the high crystallinity of 2D Nanomaterials. Different synthetic methods are categorized in the following, in which material characteristics including dispersion concentration, flake thickness, flake size and some applications are discussed in detail. At the end, we provide an overview of the advantages and disadvantages of such synthetic methods of LBE and propose future perspectives.

Mahmoud Elzalabani – One of the best experts on this subject based on the ideXlab platform.

  • Improved the quality factor and sensitivity of a surface plasmon resonance sensor with transition metal dichalcogenide 2D Nanomaterials
    Journal of Nanoparticle Research, 2020
    Co-Authors: Mohamed Alagdar, Bedir Yousif, Nehal F. Areed, Mahmoud Elzalabani
    Abstract:

    In this paper, design and modeling of a surface plasmon resonance (SPR) sensors using transition metal dichalcogenide (TMDC) 2D Nanomaterials such as tungsten sulfide (WS2) and graphene with the improvements of the sensitivity and the figure of merit (FoM) are demonstrated. The proposed sensors are based on Kretschmann configuration for the obtaining of the reflectivity using the transfer matrix method (TMM) and Fresnel equations. A monolayer of nickel (Ni) was added between WS2 layers and graphene layers to enhance the sensitivity (S) and FoM of our proposed sensor. The reported sensor exhibits a good angular sensitivity which is improved to the maximum value of 243.31°/RIU. It is noted the SPR sensor sensitivity changes with the variation of the WS2 and graphene layer numbers. Full width half maximum (FWHM) values are minimized to be 7.15°; then, the FoM is reached to be 34.03 RIU−1 which gives better sensing properties in comparison with other published articles.

  • Highly sensitive fiber optic surface plasmon resonance sensor employing 2D Nanomaterials
    Applied Physics A, 2020
    Co-Authors: Mohamed Alagdar, Bedir Yousif, Nehal F. Areed, Mahmoud Elzalabani
    Abstract:

    Optical fiber-based surface plasmon resonance sensors using, silver layer (Ag), platinum (Pt), and indium tin oxide in addition to 2D Nanomaterials such as graphene are presented in this research. In terms of sensitivity (S) and figure of merit (FoM), the performance analysis of the proposed and configured sensor has been demonstrated. The proposed sensors are based on the scheme of Kretschmann for obtaining the transmitted power using the transfer matrix method and the equations of Fresnel. With theoretical and numerical studies, the reported sensor exhibits a good wavelength sensitivity which is improved to the maximum value of 4150 nm/RIU. Full width half maximum values are minimized to be 59 nm and the FoM is optimized to be 70 RIU−1 which gives better sensing properties in comparison with other published articles.

Franz Faupel – One of the best experts on this subject based on the ideXlab platform.

  • Wet-Chemical Assembly of 2D Nanomaterials into Lightweight, Microtube-Shaped, and Macroscopic 3D Networks.
    ACS applied materials & interfaces, 2019
    Co-Authors: Florian Rasch, Fabian Schutt, Lena M Saure, Soren Kaps, Julian Strobel, Oleksandr Polonskyi, Ali Shaygan Nia, Martin R Lohe, Yogendra Kumar Mishra, Franz Faupel
    Abstract:

    Despite tremendous efforts toward fabrication of three-dimensional macrostructures of two-dimensional (2D) materials, the existing approaches still lack sufficient control over microscopic (morphology, porosity, pore size) and macroscopic (shape, size) properties of the resulting structures. In this work, a facile fabrication method for the wet-chemical assembly of carbon 2D Nanomaterials into macroscopic networks of interconnected, hollow microtubes is introduced. As demonstrated for electrochemically exfoliated graphene, graphene oxide, and reduced graphene oxide, the approach allows for the preparation of highly porous (> 99.9%) and lightweight (

  • wet chemical assembly of 2D Nanomaterials into lightweight microtube shaped and macroscopic 3d networks
    ACS Applied Materials & Interfaces, 2019
    Co-Authors: Florian Rasch, Fabian Schutt, Lena M Saure, Soren Kaps, Julian Strobel, Oleksandr Polonskyi, Ali Shaygan Nia, Martin R Lohe, Yogendra Kumar Mishra, Franz Faupel
    Abstract:

    Despite tremendous efforts toward fabrication of three-dimensional macrostructures of two-dimensional (2D) materials, the existing approaches still lack sufficient control over microscopic (morphology, porosity, pore size) and macroscopic (shape, size) properties of the resulting structures. In this work, a facile fabrication method for the wet-chemical assembly of carbon 2D Nanomaterials into macroscopic networks of interconnected, hollow microtubes is introduced. As demonstrated for electrochemically exfoliated graphene, graphene oxide, and reduced graphene oxide, the approach allows for the preparation of highly porous (> 99.9%) and lightweight (<2 mg cm-3) aeromaterials with tailored porosity and pore size as well as tailorable shape and size. The unique tubelike morphology with high aspect ratio enables ultralow-percolation-threshold graphene composites (0.03 S m-1, 0.05 vol%) which even outperform most of the carbon nanotube-based composites, as well as highly conductive aeronetworks (8 S m-1, 4 mg cm-3). On top of that, long-term compression cycling of the aeronetworks demonstrates remarkable mechanical stability over 10 000 cycles, even though no chemical cross-linking is employed. The developed strategy could pave the way for fabrication of various macrostructures of 2D Nanomaterials with defined shape, size, as well as micro- and nanostructure, crucial for numerous applications such as batteries, supercapacitors, and filters.