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Updated: Jun 6, 2026
09:11
Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release
Published on: February 13, 2016
Remotely nano-rupturable yolk/shell capsules for magnetically-triggered drug release
Shang-Hsiu Hu1, You-Yin Chen, Ta-Chung Liu
1Department of Materials Sciences and Engineering, National Chiao Tung University, Hsinchu, 300, Taiwan.
Chemical Communications (Cambridge, England)
|December 4, 2010
Summary
Magnetic field triggers temperature changes in yolk/shell capsules, causing core shrinkage and shell destruction for rapid drug release. This novel approach enables controlled, on-demand delivery of therapeutic agents.
Area of Science:
- Materials Science
- Nanotechnology
- Drug Delivery
Background:
- Development of stimuli-responsive drug delivery systems is crucial for targeted and controlled therapeutic release.
- Existing systems often face challenges with rapid response and efficient payload delivery.
Purpose of the Study:
- To engineer yolk/shell capsules with a core that transforms in volume and hydrophobicity.
- To investigate the magnetic field-induced thermal response for triggering drug release.
Main Methods:
- Preparation of yolk/shell capsules with a transformable core and an ultra-thin silica shell.
- Application of an external magnetic field to induce temperature changes.
- Observation of core size shrinkage and subsequent shell destruction.
Main Results:
- The core material exhibited significant, triggered size shrinkage (over 10x diameter decrease) upon magnetic field-induced heating.
- The ultra-thin silica shell was effectively destroyed due to core shrinkage.
- This destruction led to a rapid, burst release of the encapsulated payload.
Conclusions:
- Yolk/shell capsules with magnetically responsive cores offer a promising platform for triggered drug delivery.
- The system demonstrates efficient and rapid payload release upon external magnetic field stimulation.
- This technology has potential applications in on-demand therapeutic administration.
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