Presidential Investigator Award

本研究涉及传感器和测量系统 将超声波应用于生物工程。 的 研究目标是开发超声波 具有机械可调焦点的测量系统， 通过使用波导来实现。 述可调节焦点 允许控制空间分辨率和穿透深度 基于声场的物理轮廓。 通过 通过控制这些参数，测量系统可以 用于研究大小可变的生物系统， 形状和密度。 在对波导进行初步研究之后， 材料，潜在的波导将被设计， 制造并与换能器耦合。 它们的波束 将对概况进行测量并与预测进行比较。 将开展实验室测试， 该系统在血流量测量中的应用， 软组织的动态表征。

This research addresses transducers and measurement systems using ultrasound for applications in bioengineering. The research goal is the development of an ultrasonic measurement system with a mechanically adjustable focus, achieved by use of a waveguide. The adjustable focus allows control of spatial resolution and penetration depth based on the physical profile of the acoustic field. By controlling these parameters, the measurement system may be used to investigate biological systems of variable size, shape, and density. After an initial study of waveguide materials, potential waveguides will be designed, fabricated, and coupled with transducers. Their beam profiles will be measured and compared with predictions. Laboratory tests will be developed to demonstrate application of the system to blood flow measurement and dynamic characterization of soft tissue.