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Microfabrication of Nanoporous Gold Patterns for Cell-material Interaction Studies
Published on: July 15, 2013
Solution-processible fabrication of large-area patterned and unpatterned gold nanostructures
Xinping Zhang1, Hongmei Liu, Shengfei Feng
1College of Applied Sciences, Beijing University of Technology, Beijing 100124, People's Republic of China. Zhangxinping@bjut.edu.cn
Nanotechnology
|September 26, 2009
Summary
We developed simple, low-cost methods to create large-area plasmonic nanostructures using gold nanoparticles. These techniques enable tunable optical properties for advanced optoelectronic devices without complex lithography.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Solution-processible fabrication offers advantages like simplicity, low cost, and high flexibility for creating nanostructures.
- Conventional methods for fabricating nanoscale optoelectronic devices can be complex and expensive.
Purpose of the Study:
- To demonstrate versatile techniques for fabricating plasmonic nanostructures using colloidal gold nanoparticles.
- To explore the fabrication of metallic photonic crystals and gold nano-island structures with tunable optical properties.
Main Methods:
- Utilizing interference lithography combined with low- (<300°C) or high-temperature (>350°C) annealing.
- Employing direct high-temperature annealing of colloidal gold nanoparticle thin films.
- Controlling nanoparticle concentration, annealing temperature, and substrate surface properties.
Main Results:
- Fabrication of high-quality one- and two-dimensional metallic photonic crystals with promising optical responses.
- Creation of large-area, unpatterned gold nano-island structures with tunable dimensions (35-100 nm diameter, 20-70 nm height).
- Achieved tunable optical responses in the visible spectral range by adjusting fabrication parameters.
Conclusions:
- Developed flexible and systematic fabrication techniques for plasmonic nanostructures.
- Introduced a lithography-free method for preparing tunable gold nanostructures.
- Paved the way for the realization of novel plasmonic nanodevices.
