Cognitive ability experiment with photosensitive organic molecular thin   films
  We present an optical experiment which permits to evaluate the information exchange necessary to self-induce cooperatively a well-organized pattern in a randomly activated molecular assembly. A low-power coherent beam carrying polarization and wavelength information is used to organize a surface relief grating on a photochromic polymer thin film which is photo-activated by a powerful incoherent beam. We demonstrate experimentally that less than 1% of the molecules possessing information cooperatively transmit it to the entire photo-activated polymer film. 
Regis Barille, Sohrab Ahmadi-Kandjani, Ewelina Ortyl, Stanislaw   Kucharski and Jean-Michel Nunzi