Lead researchers (IMAGE) Optica Caption First author Jianxing Li (left) and corresponding author Yuanxi Cao (right) Credit Yuanxi Cao, Xi’an Jiaotong University Usage Restrictions None 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.