Particle Imaging Manometry

流场测绘对于理解生物医学、化学、石油和航空航天工业中许多工程领域的流场是必不可少的。最广泛使用的定量流速可视化方法是粒子图像测速或PIV。 PIV非常强大。在PIV中，流体被注入示踪粒子以确定任意位置处的速度场的大小和方向。 与PIV不同，没有广泛使用的等效技术来确定同样重要的补充压力场。这种能力已经缺乏了几十年，在这个建议中，它被认为是一个可行的技术，可以提供压力场的信息，以类似的方式作为PIV的速度场。压力敏感的工程粒子和测量仪器的建设，以实现粒子成像测压（PIM）系统将被搁置。拟议的研究有三个主要的技术目标：（1）通过光学腔共振远程询问的压力传感粒子的家庭的设计和实施，（2）微粒的大规模生产的微加工方法的发展，和（3）的设计，构造和测试的高速光谱显微镜设置，以证明PIM技术的可行性。

Abstract1000783Carlos MastrangeloUniversity of UtahFlow field mapping is essential in understanding of flows in many engineering fields in the biomedical, chemical, oil and aerospace industries. The most widely used methods for quantitative flow velocity visualization is particle image velocimetry or PIV. PIV is tremendously powerful. In PIV the fluid is seeded with tracer particles to determine the magnitude and direction for the velocity field at an arbitrary location. Unlike PIV there is no widely used equivalent technique to determine the equally important complementary pressure field. This capability has been lacking for many decades, and in this proposal it is believed that a feasible technology that can provide the pressure field information in an analogous way as PIV does for the velocity field.Construction of pressure-sensitive engineered particles and a measurement instrument to implement a Particle Imaging Manometry (PIM) system will be undertaked. The proposed research has three major technical objectives: (1) the design and implementation of a family of pressure-sensing particles remotely interrogated via optical cavity resonance, (2) the development of microfabrication methods for the mass production of the particles, and (3) the design, construction and testing of a high speed spectroscopic microscope setup to demonstrate the feasibility of the PIM technique.