Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase ...
BACKGROUND: Preeclampsia affects approximately 1 in 10 pregnancies, leading to severe complications and long-term health ...
Abstract: This paper describes a series of high intensity focused ultrasound (HIFU) phased array transducers with a single Archimedean spiral close packed element arrangement on a spherical surface ...