FIG 2 (IMAGE) Compuscript Ltd Caption Figure 2. (a) SEM pictures of LIPSs on silicon surface induced by the shaped pulse trains with an interval of 16.2 ps. (b) The cross section of LIPSs. (c) Structural colors of “Chinese knot” pattern made up of LIPSs as shown in (a). Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY 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.