Abstract: In unfocused ultrasound imaging, a delay-and-sum algorithm is commonly used to reconstruct one image per emission. When multiple emissions are performed, individual images can be combined by ...

Abstract: This study presents a reconfigurable metasurface for dynamic generation of multi-mode orbital angular momentum (OAM) waves. Based on the Pancharatnam-Berry (PB) phase principle, a meta-atom ...

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In the present paper, an improved high-order theory is employed to study the free vibration of rotating truncated sandwich conical shells with laminated face sheets and a soft core. The formulation is ...