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Nanoskiving core-shell nanowires: a new fabrication method for nano-optics
Douglas C Watson1, Ramses V Martinez, Yannik Fontana
1School of Engineering and Applied Sciences, Harvard University , 33 Oxford Street, Cambridge, Massachusetts 02138, United States.
Nano Letters
|January 21, 2014
Summary
This study introduces nanoskiving, a two-step process to precisely cut quantum-dot-in-nanowire systems. This method enables the creation of functional optical devices with controlled dimensions and high optical quality.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Quantum-dot-in-nanowire systems are promising for optical devices.
- Precise fabrication of these systems at the nanoscale is challenging.
Purpose of the Study:
- To develop a novel fabrication method for functional optical devices using quantum-dot-in-nanowire systems.
- To demonstrate control over section length, post-cutting processing, geometry modification, and high-yield production.
Main Methods:
- Embedding nanowires in epoxy.
- Sectioning nanowires using an ultramicrotome (nanoskiving) at controlled angles.
- Post-cutting wet etching for further processing.
Main Results:
- Achieved nanoscale control over section lengths.
- Demonstrated post-cutting modification capabilities.
- Generated up to 120 uniform nanowire slabs with reproducible patterns.
- Maintained high optical quality and photoluminescence (650-710 nm) of quantum dots after sectioning.
Conclusions:
- Nanoskiving is an effective two-step fabrication process for quantum-dot-in-nanowire optical devices.
- The method allows for precise control and customization of nanowire sections.
- The process preserves the functionality and optical properties of embedded quantum dots.
