Particle Imaging Manometry

1000783卡洛斯·马斯特兰奇洛犹他州大学流动场图对于了解生物医学、化工、石油和航空航天工业中许多工程领域的流动是必不可少的。最广泛使用的流动速度定量显示方法是粒子图像测速仪或PIV。PIV是非常强大的。在PIV中，流体被播撒示踪剂颗粒，以确定任意位置的速度场的大小和方向。与PIV不同的是，没有广泛使用的等效技术来确定同样重要的互补压力场。这种能力几十年来一直缺乏，在这项提议中，人们相信一种可行的技术可以提供压力场信息，就像PIV提供速度场信息一样。将致力于构建压敏工程粒子和实现粒子成像测压(PIM)系统的测量仪器。这项研究有三个主要技术目标：(1)设计和实现一系列通过光学腔谐振远程询问的压力敏感颗粒，(2)开发用于大规模生产颗粒的微制造方法，以及(3)设计、建造和测试高速光谱显微镜装置，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.