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Hydrogel-Based Stimuli-Responsive Micromotors for Biomedicine
Huaijuan Zhou1, Guozhao Dong2, Ge Gao2
1Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, Beijing 100081, China.
Cyborg and Bionic Systems (Washington, D.C.)
|October 26, 2022
Summary
Hydrogel-based stimuli-responsive micromotors offer advanced capabilities for minimally invasive medical diagnosis and therapy. These smart materials can navigate complex environments, deliver drugs, and perform tasks in response to physiological stimuli.
Area of Science:
- Biomedical Engineering
- Materials Science
- Nanotechnology
Background:
- Medical micromotors are emerging as powerful tools for noninvasive diagnosis and therapy.
- Stimuli-sensitive hydrogel materials enhance micromotor capabilities, offering biocompatibility, biodegradability, and drug-loading potential.
Purpose of the Study:
- To review the advancements in hydrogel-based stimuli-responsive (HBSR) micromotors for biomedical applications.
- To discuss the various stimuli (e.g., temperature, pH, light) that actuate these micromotors and their functionalities.
Main Methods:
- Review of current literature on HBSR micromotors.
- Categorization of micromotors based on their responsiveness to different stimuli (thermo-, photo-, magneto-, pH-, ionic-strength-, chemo-responsive).
- Analysis of their actuation mechanisms, cargo loading/unloading, and task execution.
Main Results:
- HBSR micromotors demonstrate stimuli-responsive shape transformation, enabling targeted drug delivery and cargo manipulation.
- These micromotors can navigate complex physiological environments, including confined tissues and vessels.
- Various stimuli-responsive mechanisms allow for precise control over micromotor function in situ.
Conclusions:
- HBSR micromotors represent a significant advancement in smart medical devices for targeted diagnosis and therapy.
- Their flexibility, adaptive capacity, and shape-morphing properties are crucial for complex medical tasks.
- Further research is needed to address current challenges and unlock the full potential of HBSR micromotors in clinical settings.
