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Motion Control of Urea-Powered Biocompatible Hollow Microcapsules
Open accessAbstract
The quest for biocompatible microswimmers powered by compatible fuel and with full motion control over their self-propulsion is a long-standing challenge in the field of active matter and microrobotics. Here, we present an active hybrid microcapsule motor based on Janus hollow mesoporous silica microparticles powered by the biocatalytic decomposition of urea at physiological concentrations. The directional self-propelled motion lasts longer than 10 min with an average velocity of up to 5 body lengths per second. Additionally, we control the velocity of the micromotor by chemically inhibiting and reactivating the enzymatic activity of urease. The incorporation of magnetic material within the Janus structure provides remote magnetic control on the movement direction. Furthermore, the mesoporous/hollow structure can load both small molecules and larger particles up to hundreds of nanometers, making the hybrid micromotor an active and controllable drug delivery microsystem.
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Cited by
Targeting 3D Bladder Cancer Spheroids with Urease-Powered Nanomotors
Hortelão, A. C., Carrascosa, R., Murillo-Cremaes, N., Patiño, T., & Sánchez, S. (2019) · ACS Nano · doi:10.1021/acsnano.8b06610 · Cited by 287
Self-citationEngineered platelet cell motors for boosted cancer radiosensitization
Liu, W., Nie, H., Li, H., Liu, Y., Tian, M., Wang, S., Yang, Y., & Long, W. (2024) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2023.12.091 · Cited by 21
Metadata
- Authors
- Ma, X., Wang, X., Hahn, K., & Sánchez, S.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-02-16
- Volume
- 10
- Issue
- 3
- Pages
- 3597-3605
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2314448445
- Cited by
- 322
- References
- 0
- FWCI
- 24.28
- Type
- journal article
- Language
- en
- Open access
- green
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- Ma, X., Wang, X., Hahn, K., & Sánchez, S. (2016). Motion Control of Urea-Powered Biocompatible Hollow Microcapsules. ACS Nano. https://doi.org/10.1021/acsnano.5b08067
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