公开(公告)号：US20140305510A1

公开(公告)日：2014-10-16

申请号：US14350539

申请日：2012-10-10

Applicant: CONSIGLIO NAZIONALE DELLE RICERCHE

Inventor： Vincenzo Piazza ,  Giorgio De Simoni ,  Marco Cecchini ,  Marco Travagliati ,  Fabio Beltram

IPC: F15C1/04

CPC classification number: F15C1/04 ,  B01L3/50273 ,  B01L3/502792 ,  B01L2400/0436 ,  Y10T137/0391 ,  Y10T137/2196

Abstract: A device for controlling liquid motion includes a substrate (10) of material having piezoelectric properties, and a system for controlling the motion of a quantity of liquid placed in contact with the substrate. The control system includes at least one interdigitated transducer (T1, T3, T5, T7), applied to the substrate (10) and designed for selectively generating a surface acoustic wave adapted to propagate on the substrate (10) and interact with the quantity of liquid. The control system further includes an acoustic resonator (30) which is placed on the path of the surface acoustic wave, and which is adapted to normally allow the forward transmission of the surface acoustic wave having a frequency equal to a resonance frequency of the acoustic resonator, and to reflect the surface acoustic wave back towards the transducer when the quantity of liquid is present within the acoustic resonator.

Abstract translation: 用于控制液体运动的装置包括具有压电特性的材料的基板（10），以及用于控制与基板接触放置的液体的运动的系统。 所述控制系统包括施加到所述基板（10）上并被设计用于选择性地产生适于在所述基板（10）上传播并且与所述基板（10）的数量相互作用的表面声波的至少一个叉指传感器（T1，T3，T5，T7） 液体。 该控制系统还包括放置在声表面波的路径上的声共振器（30），其适于正常地允许具有等于声谐振器的谐振频率的频率的声表面波的正向传输 并且当声谐振器内存在液体量时，将表面声波反射回换能器。