Quantum nanospheres for sub-micron particle image velocimetry

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• 作者：Patrick E. Freudenthal ; Matt Pommer ; Carl D. Meinhart and Brian D. Piorek
• 刊名：Experiments in Fluids
• 出版年：2007
• 出版时间：October, 2007
• 年：2007
• 卷：43
• 期：4
• 页码：525-533
• 全文大小：358 KB
• 刊物类别：Engineering
• 刊物主题：Engineering Fluid Dynamics
  Fluids
  Industrial Chemistry and Chemical Engineering
  Measurement Science and Instrumentation
  Thermodynamics
  Theoretical and Applied Mechanics
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1114

文摘

Quantum Nanospheres? (QNs) have been developed as a new type of flow-tracing particle for micron resolution particle image velocimetry (PIV). The 70 nm diameter QNs were created by conjugating quantum dots to polystyrene beads. The fluorescent QNs have a large Stokes’ shift and are impervious to photobleaching. The use of QNs as flow-tracing particles for micro-PIV was demonstrated by measuring fluid motion in a 30 × 300 μm channel. Using an interrogation region of 1 × 1,024 pixels and ensemble averaging 1,800 image pairs, the physical volume of the interrogation region was 117 μm × 117 μm × 2 μm.