UW Vessels (image) University of Washington Caption The engineered vessels can be made into any shape. In this case, the researchers made a model in the shape of the University of Washington logo. The white bar is 100 micrometers, about the width of a human hair. Credit Y. Zheng, U. of Washington Usage Restrictions With credit. 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.