TY - JOUR
T1 - Auxeticity as a Mechanobiological Tool to Create Meta-Biomaterials
AU - Yarali, Ebrahim
AU - Zadpoor, Amir A.
AU - Staufer, Urs
AU - Accardo, Angelo
AU - Mirzaali, Mohammad J.
PY - 2023
Y1 - 2023
N2 - Mechanical and morphological design parameters, such as stiffness or porosity, play important roles in creating orthopedic implants and bone substitutes. However, we have only a limited understanding of how the microarchitecture of porous scaffolds contributes to bone regeneration. Meta-biomaterials are increasingly used to precisely engineer the internal geometry of porous scaffolds and independently tailor their mechanical properties (e.g., stiffness and Poisson's ratio). This is motivated by the rare or unprecedented properties of meta-biomaterials, such as negative Poisson's ratios (i.e., auxeticity). It is, however, not clear how these unusual properties can modulate the interactions of meta-biomaterials with living cells and whether they can facilitate bone tissue engineering under static and dynamic cell culture and mechanical loading conditions. Here, we review the recent studies investigating the effects of the Poisson's ratio on the performance of meta-biomaterials with an emphasis on the relevant mechanobiological aspects. We also highlight the state-of-the-art additive manufacturing techniques employed to create meta-biomaterials, particularly at the micrometer scale. Finally, we provide future perspectives, particularly for the design of the next generation of meta-biomaterials featuring dynamic properties (e.g., those made through 4D printing).
AB - Mechanical and morphological design parameters, such as stiffness or porosity, play important roles in creating orthopedic implants and bone substitutes. However, we have only a limited understanding of how the microarchitecture of porous scaffolds contributes to bone regeneration. Meta-biomaterials are increasingly used to precisely engineer the internal geometry of porous scaffolds and independently tailor their mechanical properties (e.g., stiffness and Poisson's ratio). This is motivated by the rare or unprecedented properties of meta-biomaterials, such as negative Poisson's ratios (i.e., auxeticity). It is, however, not clear how these unusual properties can modulate the interactions of meta-biomaterials with living cells and whether they can facilitate bone tissue engineering under static and dynamic cell culture and mechanical loading conditions. Here, we review the recent studies investigating the effects of the Poisson's ratio on the performance of meta-biomaterials with an emphasis on the relevant mechanobiological aspects. We also highlight the state-of-the-art additive manufacturing techniques employed to create meta-biomaterials, particularly at the micrometer scale. Finally, we provide future perspectives, particularly for the design of the next generation of meta-biomaterials featuring dynamic properties (e.g., those made through 4D printing).
KW - 4D printing
KW - additive manufacturing
KW - auxeticity
KW - bone tissue engineering
KW - cell response
KW - mechanobiology
KW - Meta-biomaterials
KW - Poisson's ratio
UR - http://www.scopus.com/inward/record.url?scp=85163527418&partnerID=8YFLogxK
U2 - 10.1021/acsabm.3c00145
DO - 10.1021/acsabm.3c00145
M3 - Review article
AN - SCOPUS:85163527418
SN - 2576-6422
VL - 6
SP - 2562
EP - 2575
JO - ACS Applied Bio Materials
JF - ACS Applied Bio Materials
IS - 7
ER -