TY - JOUR

T1 - Hierarchical surface patterning of Ni- and Be-free Ti- and Zr-based bulk metallic glasses by thermoplastic net-shaping

AU - Sarac, Baran

AU - Bera, Supriya

AU - Balakin, Sascha

AU - Stoica, Mihai

AU - Calin, Mariana

AU - Eckert, Jürgen

PY - 2017/4/1

Y1 - 2017/4/1

N2 - In order to establish a strong cell-material interaction, the surface topography of the implant material plays an important role. This contribution aims to analyze the formation kinetics of nickel and beryllium-free Ti- and Zr-based Bulk Metallic Glasses (BMGs) with potential biomedical applications. The surface patterning of the BMGs is achieved by thermoplastic net-shaping (TPN) into anisotropically etched cavities of silicon chips. The forming kinetics of the BMG alloys is assessed by thermal and mechanical measurements to determine the most suitable processing temperature and time, and load applied. Array of pyramidal micropatterns with a tip resolution down to 50 nm is achievable for the Zr-BMG, where the generated hierarchical features are crucial for surface functionalization, acting as topographic cues for cell attachment. The unique processability and intrinsic properties of this new class of amorphous alloys make them competitive with the conventional biomaterials.

AB - In order to establish a strong cell-material interaction, the surface topography of the implant material plays an important role. This contribution aims to analyze the formation kinetics of nickel and beryllium-free Ti- and Zr-based Bulk Metallic Glasses (BMGs) with potential biomedical applications. The surface patterning of the BMGs is achieved by thermoplastic net-shaping (TPN) into anisotropically etched cavities of silicon chips. The forming kinetics of the BMG alloys is assessed by thermal and mechanical measurements to determine the most suitable processing temperature and time, and load applied. Array of pyramidal micropatterns with a tip resolution down to 50 nm is achievable for the Zr-BMG, where the generated hierarchical features are crucial for surface functionalization, acting as topographic cues for cell attachment. The unique processability and intrinsic properties of this new class of amorphous alloys make them competitive with the conventional biomaterials.

KW - Biomaterials

KW - Bulk metallic glass

KW - Hierarchical patterning

KW - Thermoplastic net-shaping

KW - Titanium

KW - Zirconium

UR - http://www.scopus.com/inward/record.url?scp=85007143590&partnerID=8YFLogxK

U2 - 10.1016/j.msec.2016.12.059

DO - 10.1016/j.msec.2016.12.059

M3 - Article

AN - SCOPUS:85007143590

VL - 73.2017

SP - 398

EP - 405

JO - Materials science and engineering C (Biomimetic and supramolecular systems)

JF - Materials science and engineering C (Biomimetic and supramolecular systems)

SN - 0928-4931

IS - 1 April

ER -