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Nanoscale optical writing through upconversion resonance energy transfer
1Centre for Artificial-Intelligence Nanophotonics, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Science Advances
|February 25, 2021
Summary
We developed a new nanoscale optical writing method using upconversion nanoparticles and graphene oxide. This low-energy technique achieves high-density data storage and efficient nanofabrication with features as small as 50 nm.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Nanoscale optical writing is crucial for high-capacity data storage.
- Current methods use high energy and have short device lifespans.
Purpose of the Study:
- To develop a low-energy, high-resolution nanoscale optical writing method.
- To utilize resonance energy transfer for data storage and nanofabrication.
Main Methods:
- Employing resonance energy transfer from lanthanide-doped upconversion nanoparticles to graphene oxide.
- Inducing localized chemical reduction in graphene oxide for optical writing.
Main Results:
- Achieved nanoscale optical writing with a lateral feature size of approximately 50 nm.
- Demonstrated a method with significantly lower energy consumption compared to existing techniques.
Conclusions:
- Upconversion resonance energy transfer offers a promising approach for next-generation optical data storage.
- This method enables energy-efficient nanofabrication of flexible electronic devices.
