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A skin-inspired soft material with directional mechanosensation
Michelle M Makhoul-Mansour1, Elio J Challita1,2,3, Adarsh Chaurasia4
1College of Engineering, University of Georgia, Athens, GA, United States of America.
Bioinspiration & Biomimetics
|April 13, 2021
Summary
Bioinspired soft materials mimic human skin
Area of Science:
- Biomaterials Science
- Soft Robotics
- Mechanobiology
Background:
- Human skin's mechanosensory cells offer insights for artificial sensor design.
- These cells detect touch, stiffness, and texture through sensitive mechanotransduction.
- Replicating these capabilities in soft materials can enhance engineered systems.
Purpose of the Study:
- To develop bioinspired adaptive mechanosensors using droplet interface bilayers in organogels.
- To mimic mammalian mechanosensory cell function with bacterial mechanosensitive channels.
- To investigate the directional mechanical response of these engineered systems.
Main Methods:
- Fabrication of droplet interface bilayers within a thermoreversible organogel.
- Functionalization of interfaces with bacterial mechanosensitive channels (V23T MscL).
- Utilizing finite element modeling and experimental compression/shear tests.
Main Results:
- The orientation of droplet pairs influences the membrane's mechanical response.
- Directional dependence of mechanosensitive channel activation was confirmed experimentally.
- Compressive and shearing forces elicited different channel activities.
Conclusions:
- Engineered soft materials with droplet interface bilayers and mechanosensitive channels can mimic skin's mechanosensing.
- These systems exhibit a directional response to mechanical perturbations.
- This approach advances bioinspired sensing strategies for engineered membranes.
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