SpringerOpen Newsletter

Receive periodic news and updates relating to SpringerOpen.

Open Access Highly Accessed Nano Express

3-D aluminum nanostructure with microhole array synthesized by femtosecond laser radiation for enhanced light extinction

Abdul Salam Mahmood1, Krishnan Venkatakrishnan1 and Bo Tan2*

Author Affiliations

1 Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada

2 Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada

For all author emails, please log on.

Nanoscale Research Letters 2013, 8:477  doi:10.1186/1556-276X-8-477

Published: 14 November 2013

Abstract

This article presents 3-D aluminum micro-nanostructures for enhanced light absorption. Periodic microhole arrays were created by firing a train of femtosecond laser pulses at megahertz pulse frequency onto the surface of an aluminum target at ambient conditions. The laser trains ablated the target surface and created microholes leading to the generation of deposited nanostructures inside and around the microholes. These micro-nanostructures showed enhanced light absorption, which is attributed to surface plasmonics induced by the generation of both nano- and microstructures. These micro-nanostructures may be promising for solar cell applications.

Keywords:
Aluminum nanofibrous structure; Surface plasmon resonance; Light reflectance; Light absorption; Dwell time; Repetition rate