COPS is honored by the popularizing press articles listed below:
https://www.utwente.nl/en/
https://phys.org/
https://www.engineersonline.nl/
https://www.azooptics.com/
http://www.engineeringnet.be/
that were published on the occasion of COPS paper entitled “Experimental probe of a complete 3D photonic band gap” by Manashee Adhikary, Ravitej Uppu (now at NBI Denmark), Cornelis Harteveld, Diana Grishina (now at ASML), and Willem Vos, that was published by OSA journal Optics Express.