| 摘要 |
<p>The present invention generally relates to manipulation of entities using acoustic waves. For example, by applying acoustic waves to a surface containing entities such as particles, cells, droplets, etc., the entities may be manipulated in various ways on the surface. The surface acoustic waves may be created using a surface acoustic wave generator such as an interdigitated transducer, and/or a material such as a piezoelectric substrate. In some cases, two or more acoustic waves may be applied, and the waves may interfere to create standing waves. The standing waves can be manipulated to manipulate the entities on the surface. For instance, the frequencies of the surface acoustic waves may be slightly mismatched to cause travelling standing waves to occur, which may be used to align the entities.</p> |
