Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, USA.
Opt Lett. 2011 Oct 1;36(19):3789-91. doi: 10.1364/OL.36.003789.
We report the utilization of transparent poly(dimethylsiloxane) (PDMS) microwires as the transducer for optical gas flowmetry. The elasticity of the PDMS microwire was exploited not only to miniaturize and simplify the flowmeter but also to widen and tune the measurement range through mechanical stretching. Using a 9 mm long microwire, we achieved 2.8~9.8 dB/SLM sensitivity. A 500 μm stretching of the microwire also shifted the measurement range from 1 to 4 SLM. The experimental results agreed well with predictions based on the fluid dynamic/optical model.
我们报告了利用透明聚二甲基硅氧烷（PDMS）微丝作为光学气体流量计的换能器。PDMS 微丝的弹性不仅被用来小型化和简化流量计，而且通过机械拉伸来拓宽和调整测量范围。使用 9 毫米长的微丝，我们实现了 2.8~9.8 dB/SLM 的灵敏度。微丝的 500 μm 拉伸也将测量范围从 1 到 4 SLM 进行了转移。实验结果与基于流体动力学/光学模型的预测吻合良好。
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