Cell Rover—a miniaturized magnetostrictive antenna for wireless operation inside living cells

Baju Joy, Yubin Cai, David C. Bono and Deblina Sarkar ()
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Baju Joy: Massachusetts Institute of Technology
Yubin Cai: Massachusetts Institute of Technology
David C. Bono: Massachusetts Institute of Technology
Deblina Sarkar: Massachusetts Institute of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract An intracellular antenna can open up new horizons for fundamental and applied biology. Here, we introduce the Cell Rover, a magnetostrictive antenna which can operate wirelessly inside a living cell and is compatible with 3D biological systems. It is sub-mm in size, acoustically actuated by an AC magnetic field and resonantly operated at low MHz frequencies, which is ideal for living systems. We developed an injection scheme involving non-uniform magnetic fields for intracellular injection of the Cell Rovers and demonstrated their operation in fully opaque, stage VI Xenopus oocytes, for which real-time imaging with conventional technologies is challenging. We also show that they provide a pathway for multiplexing applications to individually address multiple cells or to tune to more than one antenna within the same cell for versatile functionalities. This technology forms the foundation stone that can enable the integration of future capabilities such as smart sensing, modulation as well as energy harvesting to power in-cell nanoelectronic computing and can potentially bring the prowess of information technology inside a living cell. This could lead to unprecedented opportunities for fundamental understanding of biology as well as diagnostics and therapeutics.

Date: 2022
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DOI: 10.1038/s41467-022-32862-4

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