A constant elastic alloy is a widely used material with a high elastic modulus and an excellent wave velocity consistency. Different morphologies on the constant elastic alloy surface are observed through femtosecond ...A constant elastic alloy is a widely used material with a high elastic modulus and an excellent wave velocity consistency. Different morphologies on the constant elastic alloy surface are observed through femtosecond laser irradiation. When the laser average fluence is set to 0.58 J∕cm^2 and 200 laser pulses, with the increasing depth of distilled water, the period of the laser-induced periodic surface structures（LIPSS） becomes shorter accordingly.The higher the ethanol concentration is, the more spot-shaped structures will be formed among the surface structures when the depth of the coverage of ethanol is 2 mm. The period of the LIPSS reaches its maximum when the concentration of ethanol is 80%.展开更多
基金supported by the National Natural Science Foundation of China (Nos. 51335011, 51475481, 51475482, and 91323301)the Fundamental Research Funds for the Central Universities of Central South University
文摘A constant elastic alloy is a widely used material with a high elastic modulus and an excellent wave velocity consistency. Different morphologies on the constant elastic alloy surface are observed through femtosecond laser irradiation. When the laser average fluence is set to 0.58 J∕cm^2 and 200 laser pulses, with the increasing depth of distilled water, the period of the laser-induced periodic surface structures（LIPSS） becomes shorter accordingly.The higher the ethanol concentration is, the more spot-shaped structures will be formed among the surface structures when the depth of the coverage of ethanol is 2 mm. The period of the LIPSS reaches its maximum when the concentration of ethanol is 80%.
