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Assessment of wire flexibility.
(A) Behaviors of wires in a saline flow. (B) Curvature radius of platinum wire of ϕ1 μm and ϕ0.6 μm as a function of flow velocity. Blood vessel diameter as a function of flow velocity is also merged. As shown in inset, a wire with a radius of curvature R is expected to pass through a vessel with diameter D, when R < D.
