Flow velocity and temperature sensing using thermosensitive fluorescent polymer seed particles in water

作     者：Filippo Cellini Sean D.Peterson Maurizio Porfiri 

作者机构：Department of Mechanical and Aerospace EngineeringNew York University Tandon School of EngineeringBrooklynNYUSA Department of Mechanical and Mechatronics EngineeringUniversity of WaterlooWaterlooOntarioCanada 

出 版 物：《International Journal of Smart and Nano Materials》 (国际智能和纳米材料杂志（英文）)

年 卷 期：2017年第8卷第4期

页      面：232-252页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

基　　金：This research was conducted with the support of the National Science Foundation through Grant No.CBET-1332204 The authors also acknowledge support from the Office of Naval Research through Grant No.N00014-10-1-0988,which has allowed the acquisition of equipment used in this study This work was supported by the Division of Chemical,Bioengineering,Environmental,and Transport Systems 

主　　题：Fluorescence sensing particle image velocimetry temperature sensing 

摘      要：Particle image velocimetry(PIV)is an experimental technique that uses microscale particles as tracers to measure the velocity of a fluid *** this paper,we seek to extend this technique to simultaneously measure fluid temperature as well,by employing a novel class of thermosensitive polymer *** this aim,we designed a process to encapsulate highly fluorescent thermosensitive NBD-AE-co-poly(N-isopropylacrylamide)polymers into optically transparent poly(dimethylsiloxane)*** novel PIV particles enable direct measurement of water velocity while serving as temperature probes that increase their fluorescence intensity when the temperature rises above 32°*** demonstrate the ability of the particles to simultaneously serve as flow tracers and temperature sensors in water,we examine the flow velocity and temperature in the wake of a heated cylinder in a cross *** results indicate the possibility of extending PIV to afford the spatial and temporal resolution of fluid velocity and temperature gradients in water,with potential application to the study of convection problems from life sciences to engineering.