Greg Liu (IMAGE) Virginia Tech Caption Guoliang “Greg” Liu holds a common water jug in his lab at Hahn Hall South. Credit Photo by Steven Mackay for Virginia Tech. Usage Restrictions Credit VT License Original 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.