Two-Dimensional Nanomaterial-Based Heterostructures

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "2D and Carbon Nanomaterials".

Deadline for manuscript submissions: closed (30 March 2023) | Viewed by 2376

Special Issue Editors

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Guest Editor
Department of Physics and Astronomy, University of Alabama in Huntsville, Huntsville, AL 35899, USA
Interests: nanophotonics; coherent processes in hybrid nanostructures; plasmonics; quantum devices
Department of Physics and Astronomy, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045, USA
Interests: thin films and nanostructures including synthesis; characterization and device applications; interfaces at atomic scales in nanocomposites; heterostructures and nanohybrids for applications in photodetectors; sensors; metal-insulator-metal tunnel junctions; memristors
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Guest Editor
School of Electronic Information Engineering, Yangtze Normal University, Chongqing 408100, China
Interests: first-principles calculations; 2D materials and hetero structures; optoelectronic materials and devices; photocatalysis; electrocatalysis; energy storage materials and devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The unique physical, optical, and electronic properties of the atomically thin layers of semiconductors have made them promising hosts for the investigation of a wide range of innovative device applications and fundamental research activities. Currently, such materials are being used for the development of novel optical devices, ranging from photo-detectors, lasers, and photo-transistors, to memory cells and sensors. These materials are forming the foundations of new material research frontiers for large-scale two-dimensional electronics, quantum coherent and computations, and quantum control processes. Heterostructures consisting of atomically thick materials have further expanded the horizon for higher degrees of control of the optical and electronic properties of two-dimensionally confined excitons and carriers, offering new possibilities for spin transport, valleytronic devices, and quantum materials. Extensive research activities have also been devoted to applications of hybridized systems consisting of atomically thin heterostructures and plasmonic/photonics resonances, opening new frontiers for spin valley polarization control, hot electron devices, sensors, and intervalley coherent coupling processes. This Special Issue covers a wide range of applications, fundamental physics, fabrication, and the characterization of two-dimensional materials and their heterostructures. It also covers the hybridization of structures with plasmonic and photonic nanostructures and arrays, and their broader device applications, ranging from photonics and electronics devices to quantum control processes and sensors. We also welcome review contributions that bring together state-of-art techniques of fabrication and applications of such materials. 

Dr. Seyed Sadeghi
Dr. Judy Z. Wu
Dr. Guangzhao Wang
Guest Editors

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  • atomically thick materials
  • heterostructures
  • plasmonics
  • photonics
  • nanostructures
  • graphene
  • transition metal dichalcogenide
  • optical and electronic properties
  • devices

Published Papers (1 paper)

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11 pages, 3490 KiB  
Self-Assembly of Silver Nanowire Films for Surface-Enhanced Raman Scattering Applications
by Yanzhao Pang and Mingliang Jin
Nanomaterials 2023, 13(8), 1358; - 13 Apr 2023
Cited by 2 | Viewed by 1734
The development of SERS detection technology is challenged by the difficulty in obtaining SERS active substrates that are easily prepared, highly sensitive, and reliable. Many high-quality hotspot structures exist in aligned Ag nanowires (NWs) arrays. This study used a simple self-assembly method with [...] Read more.
The development of SERS detection technology is challenged by the difficulty in obtaining SERS active substrates that are easily prepared, highly sensitive, and reliable. Many high-quality hotspot structures exist in aligned Ag nanowires (NWs) arrays. This study used a simple self-assembly method with a liquid surface to prepare a highly aligned AgNW array film to form a sensitive and reliable SERS substrate. To estimate the signal reproducibility of the AgNW substrate, the RSD of SERS intensity of 1.0 × 10−10 M Rhodamine 6G (R6G) in an aqueous solution at 1364 cm−1 was calculated to be as low as 4.7%. The detection ability of the AgNW substrate was close to the single molecule level, and even the R6G signal of 1.0 × 10−16 M R6G could be detected with a resonance enhancement factor (EF) as high as 6.12 × 1011 under 532 nm laser excitation. The EF without the resonance effect was 2.35 × 106 using 633 nm laser excitation. FDTD simulations have confirmed that the uniform distribution of hot spots inside the aligned AgNW substrate amplifies the SERS signal. Full article
(This article belongs to the Special Issue Two-Dimensional Nanomaterial-Based Heterostructures)
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