It looks like the material produced is microscopic. The research article[1] is obscurely linked at the very end of the featured article. See Figure 3 for an SEM

It looks like the material produced is microscopic. The research article[1] is obscurely linked at the very end of the featured article. See Figure 3 for an SEM image of the material (not quite a photo, but close enough), and Figure 5 for photos of microscopic subjects through the filter. [1]: https://onlinelibrary.wiley.com/doi/10.1002/adma.202402777 https://onlinelibrary.wiley.com/doi/10.1002/adma.202402777