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Scanning Electron Microscopy

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
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Updated: May 30, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Plasmonic nanodevices: Materials, micro-nano structures and performance.

Xun Chen¹, Fupeng Qin¹, Yongxiang Ren²

¹Chongqing Institute of Green and Intelligent Technology & Chongqing School, University of Chinese Academy of Science, Chongqing 400714, PR China.

Advances in Colloid and Interface Science

|March 7, 2026

Summary

This summary is machine-generated.

Plasmonic nanodevices utilize surface plasmons for nanoscale light modulation, advancing photonics and sensing. This review details their design, fabrication, and applications in single-molecule detection and chemical reactions.

Keywords:

Material design Optical manipulation Plasmonic devices Single-molecule sensing micro-nano fabrication

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Area of Science:

Nanotechnology
Photonics
Materials Science

Background:

Plasmonic nanodevices leverage unique optical and electronic properties of surface plasmons.
They overcome traditional optical device limitations by modulating light at the nanoscale.
This bridges the gap between photonics and electronics, enabling advanced applications.

Purpose of the Study:

To review material foundations and micro-nano fabrication methodologies for plasmonic nanodevices.
To summarize nanostructure designs for optical sensing applications.
To discuss recent advancements and applications in single-molecule sensing and chemical reactions.

Main Methods:

Review of material innovations and microstructure design.
Analysis of fabrication techniques and photothermal applications.
Summary of plasmonic sensing strategies and nanostructure designs.

Main Results:

Recent advancements include material innovations, microstructure design, and fabrication techniques.
Numerous plasmonic sensing strategies have been developed for optoelectronic single-molecule sensing.
Applications extend to studying single-molecule chemical reaction mechanisms and nanopore transport.

Conclusions:

Effective plasmonic nanostructure design and fabrication are crucial for high-performance nanodevices.
Plasmonic nanodevices offer significant potential in photonics, energy conversion, and sensing.
Further research focuses on single-molecule sensing, chemical reaction mechanisms, and nanopore transport.