Publications by authors named "Aleksandr P Zhushma"
Article Synopsis
- Shapeshifting technologies in engineering and biomedicine have traditionally required external triggers, limiting their use in closed systems.
- The study introduces programmable shape-memory materials that can change shape based on internal properties rather than external stimuli.
- Using dual network hydrogels, the research shows how these materials can be designed to undergo controlled shape transformations automatically, paving the way for new applications like autonomous devices and drug delivery systems.
The design of wrinkled microcapsules for enhancement of release rate.
J Colloid Interface Sci
September 2016
Thermally expandable microcapsules (TEMs) with wrinkled shells are prepared by one-step suspension polymerization, allowing for encapsulation and controlled release of cargos. Wrinkling results from concurrent crosslinking of shell copolymers and vaporization of volatile reagents along with density increase upon polymerization. Through control of the vapor pressure of the reagents and systematic variation of the suspension composition, microcapsules with different degrees of wrinkling are prepared, ranging from locally dimpled to highly crumpled morphologies.
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- A new method for creating gas-filled microcapsules that can handle high pressures has been developed using microfluidics.
- These microcapsules start as water-filled and can be triggered to turn into gas-filled ones, enhancing their visibility in imaging applications.
- The solid polymer shell of these capsules makes them stronger against pressure, promising better performance in imaging challenging environments like oil reservoirs.