The image is shared in Wikimedia Commons with the Creative Commons Attribute-Share Alike license (CC BY SA 4.0). This means that anyone in the world is free to use the image, also in commercial works, without the need to ask for further permission. The licence requires that one acknowledges the source (BY) and if edits are made, they are shared with a similar licence (SA). Ok ways in my view to acknowledge the source are:
- Noting the authors & licence: Riikka Puurunen & Tuomo Suntola 2014 (CC BY-SA 4.0)
- linking to the Wikimedia page https://commons.wikimedia.org/wiki/File:Reconstruction_of_the_first_atomic_layer_epitaxy_experiment_by_Tuomo_Suntola.jpg.
This image is quite special in my view and it was quite an effort to make it, so I am happy it is now shared for anyone's further use. (If someone is interested, I can tell another time, how it was made.) Had the image been used in the way it was first intended, it would not have been possible to share it in Wikimedia Commons. Luckily, things don't always go as planned.
Here, I want to tell the story of this Suntola image, as an example to perhaps learn from.