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Anisotropic Liesegang pattern for the nonlinear elastic biomineral-hydrogel complex

 Woojin Choi  ;  Milae Lee  ;  Hyungseok Yong  ;  Deokjae Heo  ;  Taesuk Jun  ;  Hanwook Ryu  ;  Ji-Yeong Kim  ;  Dingyun Cui  ;  Du Yeol Ryu  ;  Sang-Young Lee  ;  Sung-Hwan Choi  ;  Byeong-Su Kim  ;  Jiyu Kim  ;  Se Yong Jung  ;  Sangmin Lee  ;  Jinkee Hong 
 SCIENCE ADVANCES, Vol.10(17) : eadl3075, 2024-04 
Journal Title
Issue Date
The Liesegang pattern is a beautiful natural anisotropic patterning phenomenon observed in rocks and sandstones. This study reveals that the Liesegang pattern can induce nonlinear elasticity. Here, a Liesegang-patterned complex with biomineral-hydrogel repetitive layers is prepared. This Liesegang-patterned complex is obtained only when the biomineralization is performed under the supersaturated conditions. The Liesegang-patterned complex features a nonlinear elastic response, whereas a complex with a single biomineral shell shows a linear behavior, thus demonstrating that the Liesegang pattern is essential in achieving nonlinear elasticity. The stiff biomineral layers have buffered the concentrated energy on behalf of soft hydrogels, thereby exposing the hydrogel components to reduced stress and, in turn, enabling them to perform the elasticity continuously. Moreover, the nonlinear elastic Liesegang-patterned complex exhibits excellent stress relaxation to the external loading, which is the biomechanical characteristic of cartilage. This stress relaxation allows the bundle of fiber-type Liesegang-patterned complex to endure greater deformation.
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1. College of Medicine (의과대학) > Dept. of Pediatrics (소아과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Ji Young(김지영)
Jung, Se Yong(정세용) ORCID logo https://orcid.org/0000-0003-1337-563X
Choi, Sung Hwan(최성환) ORCID logo https://orcid.org/0000-0002-1150-0268
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