For this article the AFM images taken with tapping mode in Tris buffer solution were performed with the NANOSENSORS qp-BioAC (cantilever 3, resonance frequency 30kHz).
Yordanka Yordanova, Willem Vanderlinden, Raphael Stoll, Daniel Rüdiger, Andreas Tosstorff, Wolfgang Zaremba, Gerhard Winter, Stefan Zahler & Wolfgang Friess Zn2+-triggered self-assembly of Gonadorelin [6-D-Phe] to produce nanostructures and fibrils
Nature Scientific Reports volume 8, Article number: 11280 (2018)
Please follow this external link to read the full article on the Nature website: https://rdcu.be/4y9J
The authors of the article demonstrate what other papers have already talked about in the past: it is possible to use probes like the NANOSENSORS Uniqprobe qp-CONT as basis to make working probes for NSOM or TERS, by using radially polarized light. They go a step further by FIB tailoring the metal film that fully covers the transparent tip.
Congratulations to the authors!
You can find the full article if you follow this external link:
Ruei-Han Jiang, Chi Chen, Ding-Zheng Lin, He-Chun Chou, Jen-You Chu, and Ta-Jen Yen Near-Field Plasmonic Probe with Super Resolution and High Throughput and Signal-to-Noise Ratio Nano LettersArticle ASAP
DOI: 10.1021/acs.nanolett.7b04142 http://pubs.acs.org/doi/full/10.1021/acs.nanolett.7b04142
A lot of work was done by research groups at the University of Neuchâtel, more than 10 years back, demonstrating the high resolution properties of microfabricated apertureless (fully metal coated) transparent quartz tips, where a connection between the observed high spatial resolution and longitudinally polarized fields confined at the probe apex was observed. The authors gave direct experimental evidence that, after injection of a radially polarized beam, a confined single spot is produced at the tip apex.