Magnetic-responsive hydrogels: From strategic design to biomedical applications

Area of Science:

• Biomaterials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Smart hydrogels responding to external stimuli are gaining attention.
• Magnetic hydrogels, incorporating magnetic nanomaterials, offer advantages like rapid response, spatial control, and remote actuation for biomedical uses.
• Their ability to actuate via magnetic fields enables applications without depth limitations.

Purpose of the Study:

• To review recent advancements in magnetic-responsive hydrogels.
• To focus on their diverse biomedical applications.
• To discuss synthesis, response modes, limitations, and future outlook.

Main Methods:

• Summarizing synthetic methodologies for magnetic hydrogels.
• Detailing various response modes (locomotion, deformation, thermogenesis).
• Analyzing the role of these modes in biomedical applications.

Main Results:

• Magnetic hydrogels can be precisely controlled using external magnetic fields.
• Multiple response modes facilitate various therapeutic interventions.
• Synthesis methods and application-specific performance are discussed.

Conclusions:

• Magnetic hydrogels show significant promise for advanced biomedical applications.
• Further research is needed to address current limitations and explore future perspectives.
• The review highlights the potential of these materials in remote-actuated therapies.