Abstract:
:Acoustic waves, capable of transmitting through optically opaque objects, have been widely used in biomedical imaging, industrial sensing and particle manipulation. High-fidelity wave front shaping is essential to further improve performance in these applications. An acoustic analog to the successful spatial light modulator (SLM) in optics would be highly desirable. To date there have been no techniques shown that provide effective and dynamic modulation of a sound wave and which also support scale-up to a high number of individually addressable pixels. In the present study, we introduce a dynamic spatial ultrasound modulator (SUM), which dynamically reshapes incident plane waves into complex acoustic images. Its transmission function is set with a digitally generated pattern of microbubbles controlled by a complementary metal-oxide-semiconductor (CMOS) chip, which results in a binary amplitude acoustic hologram. We employ this device to project sequentially changing acoustic images and demonstrate the first dynamic parallel assembly of microparticles using a SUM.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Ma Z,Melde K,Athanassiadis AG,Schau M,Richter H,Qiu T,Fischer Pdoi
10.1038/s41467-020-18347-2subject
Has Abstractpub_date
2020-09-10 00:00:00pages
4537issue
1issn
2041-1723pii
10.1038/s41467-020-18347-2journal_volume
11pub_type
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