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Three-dimensional nanomodification with ultrafast pulse laser

Three-dimensional nanomodification with ultrafast pulse laser
Three-dimensional nanomodification with ultrafast pulse laser
Various structures can be produced at the focal point inside a transparent material by using pulsed laser operating at the non-resonant wavelength with pulse widths of the order of femtoseconds. We have succeeded in the three-dimensional structural-phase transformation from diamond to amorphous structures which have high electrically conductive properties by the femtosecond laser pulses irradiation. The spatially periodic conductive structures indicate photonic crystal properties in terahertz region. We have also demonstrated the three-dimensional nanostructuring inside a glass material by the single femtosecond laser beam irradiation. The self-organized sub-wavelength periodic nanostructures are created by a pattern of interference between the incident light field and the electric field of the bulk electron plasma wave excited via two plasmon parametric decay. More recently, we have observed metallic Cu nanowires with a length of 1.0 µm and a diameter of 85 nm which were successfully photo-converted from commercial scale-like Cu particles, dispersed in a methanol solution, by using femtosecond laser irradiation. The growth mechanism of Cu nanowires under laser irradiation was suggested to be a nucleation growth process.
Shimotsuma, Y.
87dadd83-161c-47db-b2d5-d9b35426760e
Sakakura, M.
3bb15bbd-d590-4cba-ab5a-862dc7acd054
Shimizu, M.
f08d0c1c-3975-4979-a49d-50fe94bfdc80
Miura, K.
a7149211-8d33-4678-8aac-6ff05bf2ba5d
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Hirao, K.
fa81b51e-88a4-496f-bf00-1eca4fd5d7ca
Shimotsuma, Y.
87dadd83-161c-47db-b2d5-d9b35426760e
Sakakura, M.
3bb15bbd-d590-4cba-ab5a-862dc7acd054
Shimizu, M.
f08d0c1c-3975-4979-a49d-50fe94bfdc80
Miura, K.
a7149211-8d33-4678-8aac-6ff05bf2ba5d
Kazansky, P.G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Hirao, K.
fa81b51e-88a4-496f-bf00-1eca4fd5d7ca

Shimotsuma, Y., Sakakura, M., Shimizu, M., Miura, K., Kazansky, P.G. and Hirao, K. (2008) Three-dimensional nanomodification with ultrafast pulse laser. Conference on Fundamentals of Laser Assisted Micro- and Nanotechnologies: SPIE 6985, Russian Federation. 25 - 28 Jun 2008. 12 pp . (doi:10.1117/12.786938).

Record type: Conference or Workshop Item (Paper)

Abstract

Various structures can be produced at the focal point inside a transparent material by using pulsed laser operating at the non-resonant wavelength with pulse widths of the order of femtoseconds. We have succeeded in the three-dimensional structural-phase transformation from diamond to amorphous structures which have high electrically conductive properties by the femtosecond laser pulses irradiation. The spatially periodic conductive structures indicate photonic crystal properties in terahertz region. We have also demonstrated the three-dimensional nanostructuring inside a glass material by the single femtosecond laser beam irradiation. The self-organized sub-wavelength periodic nanostructures are created by a pattern of interference between the incident light field and the electric field of the bulk electron plasma wave excited via two plasmon parametric decay. More recently, we have observed metallic Cu nanowires with a length of 1.0 µm and a diameter of 85 nm which were successfully photo-converted from commercial scale-like Cu particles, dispersed in a methanol solution, by using femtosecond laser irradiation. The growth mechanism of Cu nanowires under laser irradiation was suggested to be a nucleation growth process.

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More information

Published date: 15 January 2008
Venue - Dates: Conference on Fundamentals of Laser Assisted Micro- and Nanotechnologies: SPIE 6985, Russian Federation, 2008-06-25 - 2008-06-28

Identifiers

Local EPrints ID: 443124
URI: http://eprints.soton.ac.uk/id/eprint/443124
PURE UUID: 06209552-8824-47b3-9364-dec21cb3e4f2

Catalogue record

Date deposited: 11 Aug 2020 16:34
Last modified: 11 Aug 2020 16:34

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