Cilia (IMAGE) University of Washington Caption The artificial cilia are flexible rubber fingers less than 1/100 of an inch long, and 1/1000 of an inch wide. The tips shown here vibrate 65 times per second. Credit University of Washington 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.