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Updated: Jul 4, 2026

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Published on: July 2, 2012

Optically formed carbon nanotube sphere.

Ken Kashiwagi¹, Shinji Yamashita, Sze Yun Set

¹Department of Electronic Engineering, School of Engineering, The University of Tokyo, 1-3-7 Hongo Bunkyoku, Tokyo, 113-8656, Japan. kasiwagi@sagnac.t.u-tokyo.ac.jp

|June 11, 2008

Summary

This summary is machine-generated.

Researchers developed optical deposition to precisely handle carbon nanotubes (CNTs) for photonic devices. This method creates CNT super-structures without chemical functionalization, enabling new laser technologies.

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Area of Science:

Photonics and Materials Science
Nanotechnology and Optics

Background:

Carbon nanotubes (CNTs) hold significant potential for advanced ultra-fast photonic devices.
Efficient handling and precise assembly of CNTs remain a major challenge for device fabrication.

Purpose of the Study:

To develop a novel method for handling and assembling carbon nanotubes for photonic applications.
To demonstrate the fabrication of CNT-based super-structures without chemical functionalization.

Main Methods:

Optical deposition of CNTs onto the ends of optical fibers.
Control of CNT super-structure morphology (sphere-shaped) by adjusting light intensity.
Integration of the fabricated CNT sphere into a passively mode-locked fiber laser.

Main Results:

Successful optical deposition and manipulation of CNTs.
Fabrication of sphere-shaped CNT super-structures solely by controlling light intensity.
Demonstration of a functional passively mode-locked fiber laser utilizing the optically deposited CNT sphere.

Conclusions:

Optical deposition offers an efficient, chemical-free method for handling and assembling CNTs.
The demonstrated technique facilitates the creation of CNT-based photonic devices, such as mode-locked fiber lasers.
This approach overcomes limitations of conventional CNT super-structure fabrication techniques.