Abstract: Methods and systems for creating patterns in tissue growth for tissue engineering are disclosed. In one embodiment, a method for arranging biological cells along predetermined patterns using an ultrasound includes: emitting the ultrasound by an ultrasound transducer; transmitting the ultrasound through a holographic lens toward a plurality of cells; and generating a pressure field in the predetermined patterns. The predetermined pattern includes a plurality of mutually parallel transverse planes. The parallel transverse planes are configured to entrap groups of cells of the plurality of cells. The axial pressure gradients within the parallel transverse planes are smaller than a first predetermined threshold. The lateral pressure gradients within the parallel transverse planes are larger than a second predetermined threshold. In response to generating the pressure field, the groups of entrapped cells are aligned within parallel transverse planes.

Abstract: Non-planar holographic beam shaping lenses for acoustics are disclosed herein. In one embodiment, an ultrasonic therapy system that is configured to apply ultrasound to a target in a body includes: an ultrasonic transducer configured to generate the ultrasound; and a customizable holographic lens configured to focus the ultrasound onto a focal area of a target that is an object or a portion of the object in the body. The customizable holographic lens is designed and produced based on the target. Furthermore, the customizable holographic lens is curved to mate with a front surface of the ultrasonic transducer.

Abstract: Apparatus and method for ultrasound beam shaping are disclosed herein. In one embodiment, an ultrasonic therapy system is configured to apply ultrasound to a target in a body. The system includes: an ultrasonic transducer configured to generate the ultrasound; and a customizable lens configured to focus the ultrasound onto a focal area of the target. The target is an object or a portion of the object in the body. The customizable lens is designed and produced based on at least one acquired image of the target.