1018 凸レンズ面状先端を持つ光ファイバーセンサーによる拍動流の流速測定(GS-2,5 管内流・非定常流,研究発表講演)

概要

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Blood flow is influenced by blood pressure, geometric configurations of blood vessel, characteristics of blood itself and so on. Measurement of blood velocity may be useful in evaluating the properties of blood flow and find out vascular lesions. In order to measure the local blood velocity, an optical fiber LDV (Laser Doppler Velocimeter) sensor was developed. By chemical etching in HF-NH_4F buffer solution, a convex lens-like surface was formed on the fiber tip. Laser beam emitted from the fiber tip was focused about 200μm ahead of the tip, where the measuring point was formed. The chemical etched fiber was set against flow in the center of an acrylic tube and used as a sensor for pulsatile flow velocity measurement of white poster color suspension. As a result, the central velocity of pulsatile flow was successfully measured by this optical fiber LDV sensor.
社団法人日本機械学会の論文
2005-03-18