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    • 7. 发明公开
    • Spatial stabilization of standing capillary surface waves
    • on。。。。。。。。。。。。。。。。。
    • EP0243118A2
    • 1987-10-28
    • EP87303413.6
    • 1987-04-16
    • XEROX CORPORATION
    • Elrod, Scott AlanKhuri-Yakub, Butrus T.Quate, Calvin F.
    • B41J2/065G10K11/36
    • B41J2/065B41J2002/14322G10K11/36
    • Provision is made for spatially stabilizing standing capillary surface waves (62) in fixed and repeatable locations with respect to stationary external references. For spatially stabilizing such a wave on the free surface (23) of a volume (24) of liquid, the wave propagation characteristics of the free surface of the liquid are periodically varied in a spatially stable manner at a spatial frequency equal to the spatial frequency of the standing wave or a subharmonic thereof, thereby locking the crests (64) and troughs of the standing wave in predetermined spatial locations. A spatially periodic pattern of notches (82) in a wall (83) or base plate bounding the free surface of the liquid may be employed to physically modulate its wave propagation characteristics at a suitable spatial frequency. Alternatively freely propagating secondary capillary surface waves may be launched from spatially periodic sites along the free surface of the liquid to actively modulate its wave propagation characteristics at the desired spatial frequency.
    • 规定了相对于固定的外部参考文件在固定和可重复的位置中的空间稳定站立毛细管表面波(62)。 为了在液体的体积(24)的自由表面(23)上空间稳定这样的波,液体的自由表面的波传播特性以空间频率在空间频率上周期性地变化,空间频率等于空间频率 的驻波或其次谐波,从而将驻波的波峰(64)和波谷锁定在预定的空间位置。 可以采用限定液体自由表面的壁(83)或底板中的凹口(82)的空间周期性图案,以在合适的空间频率物理地调制其波传播特性。 可选地,自由传播的次级毛细管表面波可以沿着液体的自由表面从空间周期性位置发射,以在期望的空间频率上主动调制其波传播特性。