scholarly journals Laser additive manufacturing of bulk and porous shape-memory NiTi alloys: From processes to potential biomedical applications

MRS Bulletin ◽  
2016 ◽  
Vol 41 (10) ◽  
pp. 765-774 ◽  
Author(s):  
Sasan Dadbakhsh ◽  
Mathew Speirs ◽  
Jan Van Humbeeck ◽  
Jean-Pierre Kruth
Keyword(s):  
Additive Manufacturing ◽  
Shape Memory ◽  
Biomedical Applications ◽  
Laser Additive Manufacturing ◽  
Niti Alloys ◽  
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Abstract

scholarly journals A Review on Additive Manufacturing of Shape-Memory Materials for Biomedical Applications

JOM ◽  
2020 ◽  
Vol 72 (3) ◽  
pp. 1229-1253 ◽  
Author(s):  
Nasim Sabahi ◽  
Wenliang Chen ◽  
Chun-Hui Wang ◽  
Jamie J. Kruzic ◽  
Xiaopeng Li
Keyword(s):  
Additive Manufacturing ◽  
Shape Memory ◽  
Biomedical Applications ◽  
Shape Memory Materials

scholarly journals Additive Manufacturing of NiTi Shape Memory Alloy for Biomedical Applications: Review of the LPBF Process Ecosystem

JOM ◽  
2021 ◽  
Author(s):  
Keyvan Safaei ◽  
Hossein Abedi ◽  
Mohammadreza Nematollahi ◽  
Fatemeh Kordizadeh ◽  
Hediyeh Dabbaghi ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Biomedical Applications ◽  
Niti Shape Memory Alloy

scholarly journals Architectured Shape-Memory Hydrogels with Switching Segments Based on Oligo(ε-caprolactone)

MRS Advances ◽  
2016 ◽  
Vol 1 (27) ◽  
pp. 2011-2017 ◽  
Author(s):  
Maria Balk ◽  
Marc Behl ◽  
Ulrich Nöchel ◽  
Andreas Lendlein
Keyword(s):  
Shape Memory ◽  
Material Properties ◽  
Biomedical Applications ◽  
Polymer Networks ◽  
Hydrophilic Polymer ◽  
Potential Candidate ◽  
Thermal Crosslinking ◽  
Porous Microstructure ◽  
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Form Stability

ABSTRACTShape-memory hydrogels (SMHs) are potential candidate materials for biomedical applications as they can mimic the elastic properties of soft tissue and exhibit shape transformations at body temperature. Here we explored, whether architectured SMHs can be designed by incorporating oligo(ε-caprolactone) (OCL, ${\overline M _n}$ = 4500 g·mol-1, Tm = 54 °C) side chains as switching segment into hydrophilic polymer networks based on N-vinylpyrrolidone as backbone forming component and oligo(ethylene glycol)divinylether (OEGDVE, ${\overline M _n}$ = 250 g·mol-1) as crosslinker. By utilizing NaCl and NaHCO3 as porogene during thermal crosslinking architectured hydrogels having pore diameters between 30 and 500 µm and wall thicknesses ranging from 10 to 190 µm in the swollen state were synthesized. According to the porous microstructure, a macroscopic form stability was obtained when the polymer networks were swollen until equilibrium in water. Material properties were investigated as function of the OCL content, which was varied between 20 and 40 wt%. In compression experiments the architectured hydrogels exhibited strain fixity and strain recovery ratios above 80%. These architectured SMHs might enable biomaterial applications as smart implants with the recovery of bulky structures from compact shapes.

Laser additive manufacturing of powdered bismuth telluride

2018 ◽  
Vol 33 (23) ◽  
pp. 4031-4039 ◽  
Author(s):  
Haidong Zhang ◽  
Dean Hobbis ◽  
George S. Nolas ◽  
Saniya LeBlanc
Keyword(s):  
Additive Manufacturing ◽  
Bismuth Telluride ◽  
Laser Additive Manufacturing ◽  
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Abstract

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