Laser additive manufacturing of 3D meshes for optical applications

Research output: Contribution to journalArticle

Authors

  • Fawzia Hamed Basuny
  • Mootaz Ghazy
  • Mahmoud Ahmed El-Sayed

Colleges, School and Institutes

External organisations

  • National Nanotechnology Laboratory (NNL) of CNR-INFM, Via per Arnesano 73100 Lecce, Italy
  • Arab Academy for Science & Technology and Maritime Transport

Abstract

Selective laser melting (SLM) is a widely used additive manufacturing process that can be used for printing of intricate three dimensional (3D) metallic structures. Here we demonstrate the fabrication of titanium alloy Ti–6Al–4V alloy based 3D meshes with nodally-connected diamond like unit cells, with lattice spacing varying from 400 to 1000 microns. A Concept Laser M2 system equipped with laser that has a wavelength of 1075 nm, a constant beam spot size of 50µm and maximum power of 400W was used to manufacture the 3D meshes. These meshes act as optical shutters / directional transmitters and display interesting optical properties. A detailed optical characterisation was carried out and it was found that these structures can be optimised to act as scalable rotational shutters with high efficiencies and as angle selective transmission screens for protection against unwanted and dangerous radiations. The efficiency of fabricated lattice structures can be increased by enlarging the meshing size.

Details

Original languageEnglish
Article numbere0192389
JournalPLoS ONE
Volume13
Issue number2
Publication statusPublished - 7 Feb 2018

Keywords

  • Optical shutter, Directional Light Transmitters, Lattice Structures, Additive Manufacturing, Selective laser melting