AI Article Synopsis
- Researchers introduced an innovative Double Nanohole Plasmonic Tweezers (DNH) design with a reflector layer to allow on-resonance illumination, minimizing heating effects while enhancing optical forces.
- This new design effectively dissipates heat and redistributes electromagnetic hotspots, improving accessibility for trapping nanoscale particles.
- The study showcases low-power trapping of small extracellular vesicles, paving the way for advancements in applications like Surface Enhanced Raman Spectroscopy (SERS) and enhanced imaging techniques that require strong light-matter interactions.
Article Abstract
Double Nanohole Plasmonic Tweezers (DNH) have emerged as a powerful approach for confining light to sub-wavelength volume, enabling the trapping of nanoscale particles much smaller than the wavelength of light. However, to circumvent plasmonic heating effects, DNH tweezers are typically operated off-resonance, resulting in reduced optical forces and field enhancements. In this study, we introduce a novel DNH design with a reflector layer, enabling on-resonance illumination while minimizing plasmonic heating. This design efficiently dissipates heat and redistributes the electromagnetic hotspots, making them more accessible for trapping nanoscale particles and enhancing light-matter interactions. We also demonstrate low-power trapping and release of small extracellular vesicles. Our work opens new possibilities for trapping-assisted Surface Enhanced Raman Spectroscopy (SERS), plasmon-enhanced imaging, and single photon emission applications that demand strong light-matter interactions.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11271985 | PMC |
| http://dx.doi.org/10.1021/acs.nanolett.3c02543 | DOI Listing |
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