Nanomanufacturing-Based Microelectromechanical Systems

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

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 1098

Special Issue Editor

SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China
Interests: memristor; 2D materials fabrication and device; in situ TEM
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The study of nanomanufacturing-based microelectromechanical system (NMEMS) is among the leading topics of today’s nanotechnology research. NMEMS refers to the development and manufacturing of microelectromechanical systems (MEMS) using nanomanufacturing techniques and nanoscale materials. Nanomanufacturing techniques used for MEMS devices mainly include nanolithography, electron beam lithography, plasma etching and self-assembly; each of these enables precise control of material deposition and patterning at the nanoscale. The exploration of new nanomaterials (such as 2d materials, metal–organic frameworks, etc.) and new devices (such as MEMS mechanical energy harvesters, MEMS biosensors, etc.) will be necessary if we are to develop MEMS technology. NMEMS allows for the creation of devices that are more efficient, reliable, and durable than traditional MEMS devices. Meanwhile, it offers a variety of other advantages, such as the ability to manufacture complex, multi-functional devices on a single chip.

This Special Issue focuses on the latest developments in nanomaterials and state-of-the-art nanomanufacturing techniques. This publication also intends to consider the practical applications of microelectromechanical systems. We hope to attract both academic and industrial researchers in order to foster the current knowledge of nanomaterials and to present new ideas for use in future applications and new technologies.

Dr. Kuibo Yin
Guest Editor

Manuscript Submission Information

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Keywords

  • nanomanufacturing
  • nanomaterials
  • nanodevices
  • in situ fabrication
  • microelectromechanical system
  • nanoelectromechanical systems

Published Papers (1 paper)

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Research

9 pages, 3873 KiB  
Article
In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation
by Luping Tang, Chun Zhang, Chen Liao, Yiwei Liu and Yonghao Cheng
Nanomaterials 2023, 13(24), 3082; https://doi.org/10.3390/nano13243082 - 5 Dec 2023
Viewed by 866
Abstract
Colloidal semiconductor nanocrystals have attracted widespread attention due to their tremendous electrical and optical properties. Nanoparticles exhibit a strong tendency to aggregate and sinter in a short period of time during processing or use due to their large surface area-to-volume ratio, which may [...] Read more.
Colloidal semiconductor nanocrystals have attracted widespread attention due to their tremendous electrical and optical properties. Nanoparticles exhibit a strong tendency to aggregate and sinter in a short period of time during processing or use due to their large surface area-to-volume ratio, which may lead to significant changes in their required performance. Therefore, it is of great significance to conduct in-depth research on the sintering process and mechanism of nanoparticles to maintain their stability. Here, the sintering process of CdSe/CdS core/shell nanocrystals under continuous electron beam irradiation was studied using in situ transmission electron microscopy (TEM). In the early stages of sintering, CdSe/CdS nanocrystals approached each other at a distance of approximately 1–2 nm. As the exposure time to the electron beam increased, the movement of surface atoms on the nanocrystals led to contact between them. Subsequently, the atoms on the contact surfaces underwent rapid motion, resulting in the rapid formation of the neck between the particles. The neck formation between adjacent particles provides strong evidence of a sintering mechanism dominated by surface atom diffusion rather than Ostwald ripening. Further research in this area could lead to the development of improved methods to prevent sintering and enhance the stability of nanocrystals, ultimately contributing to the advancement of nanomaterial-based devices and materials with long-lasting performance. Full article
(This article belongs to the Special Issue Nanomanufacturing-Based Microelectromechanical Systems)
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