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A Method to Fabricate Disconnected Silver Nanostructures in 3D

A Method to Fabricate Disconnected Silver Nanostructures in 3D

Published on: November 27, 2012

3D nano-structures for laser nano-manipulation.

Gediminas Seniutinas¹, Lorenzo Rosa, Gediminas Gervinskas

¹Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia ; The Australian National Fabrication Facility - ANFF, Victoria node, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.

Beilstein Journal of Nanotechnology

|September 25, 2013

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Researchers created high-aspect-ratio nano-wells using gold film resputtering. These structures show potential for trapping nanoparticles via self-induced back-action, with optimal conditions identified for 50-nm beads in water.

Area of Science:

Nanotechnology
Optical Physics
Materials Science

Background:

Electron beam lithography enables precise fabrication of nanoscale features.
Plasma etching is a key technique for creating high-aspect-ratio structures.
Extraordinary optical transmission through nanostructures is a subject of significant research.

Purpose of the Study:

To fabricate high-aspect-ratio nano-wells using gold film resputtering.
To investigate the extraordinary transmission of light through these nano-well structures.
To explore the potential of these nano-wells for self-induced back-action (SIBA) trapping of nanoparticles.

Main Methods:

Fabrication of nano-holes in a PMMA mask using electron beam lithography.
Resputtering of gold films using a dry plasma etching tool to form nano-wells.

Keywords:

extraordinary transmission near field optical tweezing plasmonics reactive ion etching self-induced back-action

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A Method to Fabricate Disconnected Silver Nanostructures in 3D

A Method to Fabricate Disconnected Silver Nanostructures in 3D

Published on: November 27, 2012

Laser-induced Forward Transfer of Ag Nanopaste

Laser-induced Forward Transfer of Ag Nanopaste

Published on: March 31, 2016

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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Experimental and numerical investigation of extraordinary transmission.

Numerical simulations using the analytical Lorentz force model for nanoparticle trapping.

Main Results:

Successfully formed well-like structures with high aspect ratio (height/width ≈ 3-4).
Demonstrated extraordinary transmission through the fabricated nano-well patterns.
Showcased the potential for SIBA trapping of polystyrene beads (50-nm and 100-nm diameter).
Identified optimal trapping conditions: 2 pN/W/μm² force on a 50-nm bead in water.

Conclusions:

The fabricated nano-wells exhibit promising optical properties for light transmission.
The nano-well structures are suitable for implementing SIBA trapping mechanisms.
Numerical simulations provide a strong basis for understanding and optimizing nanoparticle trapping with these structures.