Purdue spider web architecture (IMAGE) Purdue University Caption A spiderweb-inspired fractal design is used for hemispherical 3D photodetection to replicate the vision system of arthropods. Credit Sena Huh/Purdue University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.