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Selective assembly of multi-component nanosprings and nanorods
S V Kesapragada1, T J Yim, J S Dordick
1Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
Journal of Nanoscience and Nanotechnology
|April 2, 2010
Summary
Researchers developed a novel method using biological molecules to assemble nanoscale structures. This technique enables the creation of complex hierarchical architectures from custom nanorods for advanced materials.
Area of Science:
- Materials Science
- Nanotechnology
- Biotechnology
Background:
- Hierarchical nano-to-meso-scale architectures are crucial for advanced materials.
- Controlled assembly of nanostructures remains a significant challenge.
- Glancing Angle Deposition (GLAD) allows fabrication of diverse nanostructures.
Purpose of the Study:
- To present a new method for creating complex hierarchical nano-architectures.
- To utilize biological connector molecules for directed self-assembly.
- To demonstrate the assembly of multi-component nanostructures with controlled material combinations.
Main Methods:
- Fabrication of Si-Cr/Au multi-stack zigzag nanosprings and nanorods using GLAD.
- Selective detachment and suspension of nanorods in an aqueous solution.
- Surface functionalization with biotin and streptavidin for directed end-to-end assembly.
Main Results:
- Successful end-to-end assembly of nanorods of varying lengths.
- Demonstration of selective assembly guided by biological connector molecules.
- Creation of hybrid nano-architectures such as nano-honeycombs and nanoladders.
Conclusions:
- Biological connector molecules effectively direct the assembly of GLAD-fabricated nanostructures.
- The proposed technique offers a versatile pathway for building complex 3D nano-architectures.
- This method facilitates the creation of hybrid materials with tailored properties.
