3D printing of plasmonic nanofocusing tip enabling high resolution, high throughput and high contrast optical near-field imaging

Li Long; Qiurong Deng; Rongtao Huang; Jiafang Li; Zhi-Yuan Li

doi:10.1038/s41377-023-01272-6

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3D printing of plasmonic nanofocusing tip enabling high resolution, high throughput and high contrast optical near-field imaging

Original Articles

- 3D printing of plasmonic nanofocusing tip enabling high resolution, high throughput and high contrast optical near-field imaging
- Light: Science & Applications Vol. 12, Issue 10, Pages: 2145-2153(2023)
- Affiliations：
  
  1.School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China
  2.School of Physics, Beijing Institute of Technology, Beijing 100081, China
  3.State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
- Author bio：
  
  Zhi-Yuan Li (phzyli@scut.edu.cn)
- Funds：
- DOI：10.1038/s41377-023-01272-6
  CLC：
- Published：31 October 2023，
  
  Published Online：06 September 2023，
  
  Received：04 August 2023，
  
  Revised：08 August 2023，
  
  Accepted：22 August 2023
- Accepted：
Scan QR Code
Long, L. et al. 3D printing of plasmonic nanofocusing tip enabling high resolution, high throughput and high contrast optical near-field imaging. Light: Science & Applications, 12, 2145-2153 (2023).
DOI：

Long, L. et al. 3D printing of plasmonic nanofocusing tip enabling high resolution, high throughput and high contrast optical near-field imaging. Light: Science & Applications, 12, 2145-2153 (2023). DOI： 10.1038/s41377-023-01272-6.

摘要

Abstract

Scanning near-field optical microscopy (SNOM) offers a means to reach a fine spatial resolution down to ~ 10 nm

but unfortunately suffers from low transmission efficiency of optical signal. Here we present design and 3D printing of a fiber-bound polymer-core/gold-shell spiral-grating conical tip that allows for coupling the inner incident optical signal to the outer surface plasmon polariton with high efficiency

which then adiabatically transport

squeeze

and interfere constructively at the tip apex to form a plasmonic superfocusing spot with tiny size and high brightness. Numerical simulations and optical measurements show that this specially designed and fabricated tip has 10% transmission efficiency

~ 5 nm spatial resolution

20 dB signal-to-noise ratio

and 7000 pixels per second fast scanning speed. This high-resolution

high throughput

and high contrast SNOM would open up a new frontier of high spatial-temporal resolution detecting

imaging

and monitoring of single-molecule physical

chemical

and biological systems

and deepen our understanding of their basic science in the single-molecule level.

关键词

Keywords

references

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