Two-Dimensional Materials for Emerging Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: 28 February 2025 | Viewed by 792

Special Issue Editor


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Guest Editor
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
Interests: atomic layer etching; interconnects and packaging; graphene synthesis and electronics; chemical vapor deposition; quantum devices
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Special Issue Information

Dear Colleagues,

Two-dimensional (2D) materials offer immense potential for scientific breakthroughs and technological innovations. The unique structure of 2D materials enables the random construction of 2D heterostructures and novel functionality in many research fields. The development of electronics, optoelectronics, flexible electronics, strain electronics and torsion electronics based on two-dimensional materials has been paid more and more attention. 2D electronic materials are also highly regarded in sensing applications, mainly due to their large and highly customizable surface chemistry. The purpose of this special issue is to collect reviews or articles on emerging applications of 2D materials in electronics and sensing.

Dr. Haozhe Wang
Guest Editor

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Keywords

  • 2D materials
  • robotics
  • actuation
  • MXene
  • chemical vapor deposition

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Published Papers (1 paper)

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Research

23 pages, 4816 KiB  
Article
Eco-Friendly Alternatives to Toluene-Based 2D Inks for Inkjet and Electrohydrodynamic Jet Printing Processes: A Rheological Study
by Pedro C. Rijo, Ilaria Tocci and Francisco J. Galindo-Rosales
Micromachines 2025, 16(2), 130; https://doi.org/10.3390/mi16020130 - 23 Jan 2025
Viewed by 502
Abstract
Green sustainable solvents have emerged as promising alternatives to petroleum-derived options, such as toluene. This study demonstrates the use of cyrene as an effective exfoliation medium for graphene nanoplatelets (GNPs) and hexagonal boron nitride (hBN) and molybdenum disulfide (MoS2) particles. The [...] Read more.
Green sustainable solvents have emerged as promising alternatives to petroleum-derived options, such as toluene. This study demonstrates the use of cyrene as an effective exfoliation medium for graphene nanoplatelets (GNPs) and hexagonal boron nitride (hBN) and molybdenum disulfide (MoS2) particles. The incorporation of polyvinylpyrrolidone (PVP) attenuates the shear-thinning behavior of GNP and hBN suspensions, maintaining a constant shear viscosity over a wide range of shear rates regardless of PVP molecular weight. Despite the presence of polymer, elasticity is hindered by inertia effects, making it impossible to accurately measure the extensional relaxation time in the capillary breakup extensional rheometer (CaBER). Assuming the weak elasticity of the formulations has a negligible impact on the breakup mechanism, we estimated droplet sizes for drop-on-demand (DoD) inkjet printing and electrohydrodynamic (EHD) jet printing based on fluid properties, i.e., viscosity, surface tension and density, and nozzle inner diameter (Dnozzle). Results indicate that the droplet size ratio (Ddrop/Dnozzle) in DoD printing can be up to two orders of magnitude higher than the one predicted for EHD jet printing at the same flow rate. This work highlights the potential of cyrene-based 2D inks as eco-friendly alternatives for advanced printing technologies. Full article
(This article belongs to the Special Issue Two-Dimensional Materials for Emerging Applications)
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