Writing for Physics World, the member magazine of the Institute of Physics, Jon Cartwright sums up the history and current state of the stripy nanoparticles controversy.
Here is one excerpt:
Stellacci himself was notably absent from the online discussions, but they did prompt him in October last year to publish work in collaboration with two independent groups led by Christoph Renner at the University of Geneva in Switzerland and Steven De Feyter at the University of Leuven in Belgium. The works, which were published in the journals ACS Nano (7 8529) and Langmuir (29 13723), sought to corroborate Stellacci’s original evidence with more advanced STM techniques. Unfortunately, they muddied the water even more: despite the images appearing almost stripe-free at first glance, the authors claimed that their analysis had indeed shown the stripe-like features to be present.
You can read the entire article here.
The above excerpt is particularly important if you consider this (unfortunately anonymous and therefore impossible to confirm) comment published at PubPeer:
As a reviewer of one of the recent papers, I asked specifically for the authors to address the discrepancy between the stripes so easily visible in the original paper and the stripes that I struggled to see in the present work. It’s disappointing that this wasn’t really addressed.