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Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment
Published on: April 4, 2017
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Detection of sub-atomic movement in nanostructures.
Tongjun Liu1, Jun-Yu Ou1, Kevin F MacDonald1
1Optoelectronics Research Centre & Centre for Photonic Metamaterials, University of Southampton SO17 1BJ UK bruce.ou@soton.ac.uk kfm@orc.soton.ac.uk.
Nanoscale Advances
|September 22, 2022
Summary
We developed a new method to detect nanoscale movements by analyzing electron emissions. This technique can measure tiny oscillations in nanowires and flea body parts, advancing materials science and nanotechnology.
Area of Science:
- Physics
- Materials Science
- Nanotechnology
- Biology
Background:
- Nanoscale objects exhibit rapid movements, including natural Brownian motion and stimulated oscillations vital for nano-devices.
- Detecting these ultrafast, small-amplitude movements is crucial for understanding dynamic processes.
Purpose of the Study:
- To introduce a novel methodology for detecting nanoscale movements.
- To demonstrate sensitivity to sub-atomic displacements.
Main Methods:
- Spectral analysis of secondary electron emission from moving nanostructures.
- Detection of nanowire Brownian oscillations.
- Hyperspectral mapping of stimulated oscillations.
Main Results:
- Sensitive detection of nanowire Brownian oscillations with approximately 10 picometer amplitude.
- Hyperspectral mapping of stimulated oscillations on biological structures (flea setae).
Conclusions:
- The developed technique offers unprecedented sensitivity for studying nanoscale dynamics.
- Opens new avenues for research in materials science, nanotechnology, and biology.
