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Nano-shaped hot-wire for ultra-high resolution anemometry in cryogenic helium

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Academic year: 2021

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Figure

FIG. 1. Illustration and images of the hot-wire. (a) Picture of the wire stretched between the tips of the prongs
Figure 4 shows the resistance R (right axis) as a function of the current I (x-axis) for various velocities v
FIG. 6. Schematic of the constant voltage anemometer driver. The operational amplifiers LT 1028, which maintains the constant voltage across the sensor, is wired to produce a 6 kΩ transimpedance gain
FIG. 8. Power Spectral Density (PSD) of the hot-wire driver voltage output (solid line) and the Pitot tube velocity signal in the TSF grid experiment at mean velocity v = 1.7 m/s

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