What question did this study set out to answer?

The aim is to develop a novel plasmonic fiber probe for improved near-field optical imaging performance.

Asymmetric Pyramidal Plasmonic Fiber Probe for High‐Resolution Near‐Field Optical Imaging by Linearly Polarized Excitation

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Novel plasmonic probe achieves high spatial resolution in optical imaging, suggesting advancements in super-resolution microscopy.

The aim is to develop a novel plasmonic fiber probe for improved near-field optical imaging performance.
Demonstrated an asymmetric pyramidal fiber probe fabricated via focused ion beam milling.
Characterized transmitted and scattered field distributions under varied polarization angles.
Utilized finite-difference time-domain simulations to analyze probe performance.
Achieved spatial resolution of 32.9 nm, corresponding to λ/20 at 633 nm.
Confirmed strong field localization at the probe tip under linearly polarized illumination.
Demonstrated the potential for improved applications in super-resolution microscopy.

Wei et al. (2025) studied this question.

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