Researchers in Heidelberg and Tübingen have demonstrated a new way to assemble 3D objects from small building blocks in just one step using shaped ultrasound. The technology is expected to be useful for bioprinting, which requires a gentle process to prevent damage to biological cells. The researchers used high-frequency ultrasound, which can manipulate very small building blocks, and multiple acoustic holograms together to capture particles and cells and assemble them into three-dimensional shapes. The technology is expected to be a promising platform for the formation of cell cultures and tissues in 3D.



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