基于多目标优化的高分辨率超声超构透镜

Key Points

• The aim is to develop a reverse design method for ultrasound metamaterial lenses using a multi-objective optimization approach.
• Proposed a reverse design method employing multi-objective genetic algorithm (MOGA) to optimize lens parameters.
• Optimized geometrical parameters of a concentric stainless steel ring array to enhance focal strength and bandwidth.
• Combined finite element simulation for precise control of acoustic properties and field distribution.
• Achieved a super-resolution focus with a half-width of 0.4 wavelengths, surpassing the Abbe diffraction limit.
• Experimental tests underwater confirmed theoretical predictions with superior image clarity and edge detail over traditional lenses.
• Demonstrated effective reverse design for high-resolution acoustic imaging systems.