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Poly (d,l-lactic acid) microfibers with tunable nanoporous structure in the superficial layer were fabricated by electrospinning. The density and size of nanopores were controlled by the components of electrospun solvent, which were attributed to the competition between phase separation and solvent evaporation. The nanotopography influenced the mechanical strength, hydrophobicity, and degradation...
In spinal fixation devices, the Young's modulus of the metallic implant rod should be not only sufficiently low to prevent stress shielding for the patient but also sufficiently high to suppress springback for the surgeon. This paper proposes a novel function of biomedical titanium alloys—self-adjustment of Young's modulus. Deformation-induced ω phase transformation was introduced into β-type titanium...
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