Abstract
This paper reports authors experimental investigation on head-disk contact velocity and tribo charge intensity. Measurements of trobo currents divide into three parts, deceleration, constant velocity and acceleration at various initial velocities (v <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</inf> ). It is observed that tribo current appears at different linear velocity for different disk initial velocity v <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</inf> . A ripple of tribo current at large initial velocity during disk constant speed is observed while the slider is dragging on the disk surface. A calculation of tribo charge current at different initial velocity v <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</inf> is similar with the observations.
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