Dong Lin, Kansas State University (IMAGE) Kansas State University Caption Dong Lin, Kansas State University assistant professor of industrial and manufacturing systems engineering, holds a sample made of 3-D printed graphene aerogel, which GUINNESS WORLD RECORDS has named 'the least dense 3-D printed structure.' Credit Kansas State 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.