Encapsulation technique and application progress of mechanical stimuli-responsive microcapsules

The field of mechanical stimuli-responsive microcapsules has had a significant impact on numerous applications, including damage visualization, self-healing coatings, aromatic embedding, drug delivery and tactile simulation. Using the embedding ability of microcapsules, smart microcapsule technology refers to triggering the release of core materials in a specific environment. Compared with pH and temperature, mechanical stimulation is one of the most easily methods to trigger release. As a result, research on the release of the core materials triggered by mechanical events has gradually emerged. In this review, the characteristics of materials that are responsive to mechanical stimuli are introduced firstly. Then, various mechanical trigger release modes and associated techniques are summarized. Finally, the applications, challenges and future directions of mechanical stimuli-responsive microcapsules are explored.