Development of Innovative Devices Using New-Emerging Micro and Nano Technologies

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanofabrication and Nanomanufacturing".

Deadline for manuscript submissions: closed (31 May 2024) | Viewed by 498

Special Issue Editor


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Guest Editor
School of Physics and Materials Science, Nanchang University, Nanchang, China
Interests: nanophotonics; micro-nano mechanics

Special Issue Information

Dear Colleagues,

The constant downscaling of nanoelectronic and optoelectronic technologies necessitates scientific research on novel micro- or nano-devices in order to create new devices, define generate the complex materials required, and ensure that they have good properties and are reliable.

This Special Issue focuses on, but is not limited to, interface effects, the charge transport process in these nano/micro electronic devices, and the electrical performance improvement of these devices via material and device design and fabrication.

It aims to present the development of state-of-the-art novel micro- or nano-devices. We invite authors from leading groups in the field to contribute original research articles and review articles that cover current micro/nano technologies.

Prof. Dr. Tongbiao Wang
Guest Editor

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Keywords

  • electronic and optoelectronic devices
  • light-emitting diodes
  • lasers
  • photodetectors
  • micro/nano technologies

Published Papers (1 paper)

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Research

11 pages, 1328 KiB  
Article
Controllable Pseudospin Topological Add-Drop Filter Based on Magnetic–Optical Photonic Crystals
by Chao Yan, Yuhao Huang, Zhi-Yuan Li and Wenyao Liang
Nanomaterials 2024, 14(11), 919; https://doi.org/10.3390/nano14110919 - 23 May 2024
Viewed by 341
Abstract
We propose a controllable topological add-drop filter based on magnetic–optical photonic crystals. This add-drop filter is composed of two straight waveguides and a hexagonal photonic crystal ring resonator. The waveguide and ring resonator are constructed by three different honeycomb magnetic–optical photonic crystals. The [...] Read more.
We propose a controllable topological add-drop filter based on magnetic–optical photonic crystals. This add-drop filter is composed of two straight waveguides and a hexagonal photonic crystal ring resonator. The waveguide and ring resonator are constructed by three different honeycomb magnetic–optical photonic crystals. The expanded lattice is applied with an external magnetic field so that it breaks time-reversal symmetry and the analogous quantum spin Hall effect simultaneously. While the standard one and the compressed one are not magnetized and trivial, the straight waveguide supports pseudospin-down (or pseudospin-up) one-way states when the expanded lattice is applied with an external magnetic field of +H (or −H). The ring resonator possesses multiple resonant modes which can be divided into travelling modes and standing modes. By using the travelling modes, we have demonstrated the function of the add-drop filter and realized the output port control by changing the direction of the magnetic field. Moreover, a large tunable power ratio from near 0 to 52.6 is achieved by adjusting the strength of the external magnetic field. The structure has strong robustness against defects due to the topological protection property. These results have potential in wavelength division multiplexing systems and integrated topological optical devices. Full article
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