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Related Experiment Video

Updated: Feb 17, 2026

$Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing$

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

Sub-Diffraction Limited Writing based on Laser Induced Periodic Surface Structures (LIPSS).

Xiaolong He^1,2, Anurup Datta², Woongsik Nam²

¹School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.

Scientific Reports

|October 11, 2016

Summary

This summary is machine-generated.

Researchers developed a novel laser-based method to precisely control the fabrication of aligned nanowires and nanogrooves below the diffraction limit. This technique offers a versatile approach for creating nanoscale devices with high precision.

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Published on: February 27, 2013

Area of Science:

Materials Science
Nanotechnology
Laser Physics

Background:

Traditional laser-induced periodic surface structures (LIPSS) often result in poorly aligned, multiple lines.
Fabrication of well-controlled, single nanostructures remains a challenge.

Purpose of the Study:

To present a controlled method for fabricating single and multiple nanostructures below the diffraction limit.
To achieve well-controlled and aligned nanowires and nanogrooves with specific dimensions and orientation.

Main Methods:

Utilized laser-induced periodic surface structure (LIPSS) with a high-power femtosecond laser.
Combined numerical modeling with Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) analyses.
Investigated the interference mechanism between incident laser radiation and surface plasmons.

Main Results:

Successfully fabricated aligned nanowires and nanogrooves with widths as small as 40 nm and 60 nm.
Achieved desired orientation and length control for the nanostructures.
Demonstrated the fabrication of single nanowires and nanogrooves using the same mechanism.

Conclusions:

The developed method provides precise control over nanostructure fabrication, surpassing limitations of typical LIPSS.
The mechanism involves the interference of laser radiation and surface plasmons on dielectric surfaces.
This technique offers a simple, flexible, and versatile alternative for fabricating nanoscale devices.