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Swarming Aqua Sperm Micromotors for Active Bacterial Biofilms Removal in Confined Spaces

期刊

ADVANCED SCIENCE
卷 8, 期 19, 页码 -

出版社

WILEY
DOI: 10.1002/advs.202101301

关键词

active bacterial biofilms; Aqua Sperm micromotors; biobots; nanorobots; spermatozoa; spermbots

资金

  1. EFRR [CZ.02.1.01/0.0/0.0/15_003/0000444]
  2. Ministry of Health of the Czech Republic [NU21-08-00407]
  3. Ministry of Education, Youth and Sports (Czech Republic) under ERC CZ program [LL2002]
  4. Czech Science Foundation [21-16084 J]

向作者/读者索取更多资源

Researchers have developed high-speed Aqua Sperm micromotors from North African catfish to destroy bacterial biofilms by using water-induced dynein ATPase catalyzed adenosine triphosphate (ATP) degradation as biocompatible fuel. These micromotors with ultra-fast velocity and head size similar to bacteria efficiently navigate within biofilm matrix, demonstrating real-world applications in destroying biofilms on medical and laboratory tubing. This innovative system extends the biomedical application of Aqua Sperm micromotors to include hybrid robots for fertilization or cargo tasks.
Microscale self-propelled robots show great promise in the biomedical field and are the focus of many researchers. These tiny devices, which move and navigate by themselves, are typically based on inorganic microstructures that are not biodegradable and potentially toxic, often using toxic fuels or elaborate external energy sources, which limits their real-world applications. One potential solution to these issues is to go back to nature. Here, the authors use high-speed Aqua Sperm micromotors obtained from North African catfish (Clarias gariepinus, B. 1822) to destroy bacterial biofilm. These Aqua Sperm micromotors use water-induced dynein ATPase catalyzed adenosine triphosphate (ATP) degradation as biocompatible fuel to trigger their fast speed and snake-like undulatory locomotion that facilitate biofilm destruction in less than one minute. This efficient biofilm destruction is due to the ultra-fast velocity as well as the head size of Aqua Sperm micromotors being similar to bacteria, which facilitates their entry to and navigation within the biofilm matrix. In addition, the authors demonstrate the real-world application of Aqua Sperm micromotors by destroying biofilms that had colonized medical and laboratory tubing. The implemented system extends the biomedical application of Aqua Sperm micromotors to include hybrid robots for fertilization or cargo tasks.

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