Results 271 to 280 of about 12,108,841 (318)

Fabrication and Biological Activity of 3D-Printed Polycaprolactone/Magnesium Porous Scaffolds for Critical Size Bone Defect Repair

ACS Biomaterials Science & Engineering, 2020
Polycaprolactone (PCL) is widely used in bone tissue engineering due to its biocompatibility and mechanical strength. However, PCL is not biologically active and shows poor hydrophilicity, making it difficult for new bones to bind tightly to its surface.
Shuang Zhao, Kai Xie, Yu Guo, Jia Tan, Junxiang Wu, Yangzi Yang, Penghuai Fu, Lei Wang, Wenbo Jiang, Yongqiang Hao   +9 more
openaire   +2 more sources

3D-printed scaffolds with ROS-clearing capacity for critical-sized bone defect regeneration

Biomaterials Advances
The repair of critical-size bone defects remains a major challenge in the field of biomedical tissue rehabilitation. Within the injured tissue microenvironment, inflammation and cellular apoptosis trigger the accumulation of reactive oxygen species (ROS), thereby impeding tissue regeneration.
Pengfei, Chen, Yuhao, Xia, Yuliang, Wu, Xiaopei, Wu, Youfa, Wang, Honglian, Dai   +5 more
openaire   +2 more sources

Three-Dimensional-Printed Spherical Hollow Structural Scaffolds for Guiding Critical-Sized Bone Regeneration

ACS Biomaterials Science & Engineering
The treatment of bone tissue defects continues to be a complex medical issue. Recently, three-dimensional (3D)-printed scaffold technology for bone tissue engineering (BTE) has emerged as an important therapeutic approach for bone defect repair. Despite the potential of BTE scaffolds to contribute to long-term bone reconstruction, there are certain ...
Xiao Liu, Jianpeng Gao, Jianheng Liu, Junyao Cheng, Zhenchuan Han, Zijian Li, Zhengyang Chang, Licheng Zhang, Ming Li, Peifu Tang   +9 more
openaire   +2 more sources

3D-printed polymeric scaffolds with optimized architecture to repair a sheep metatarsal critical-size bone defect

2022
Abstract The reconstruction of critical-size bone defects in long bones remains a challenge for clinicians. We developed a new bioactive medical device for long bone repair by combining a 3D-printed architectured cylindrical scaffold made of clinical-grade polylactic acid (PLA) with a polyelectrolyte film coating ...
Charlotte Garot, Sarah Schoffit, Cécile Monfoulet, Paul Machillot, Claire Deroy, Samantha Roques, Julie Vial, Julien Vollaire, Martine Renard, Hasan Ghanem, Hanane El-Hafci, Adeline Decambron, Véronique Josserand, Laurence Bordenave, Georges Bettega, Marlène Durand, Mathieu Manassero, Véronique Viateau, Delphine Logeart-Avramoglou, Catherine Picart   +19 more
openaire   +1 more source

Multidimensional Resonance Controlled by Critical Size in Printed Binary Colloidal Crystals for High-Contrast Imaging

Journal of the American Chemical Society
Colloidal crystal engineering enables the precise construction of structures with remarkable properties. However, the flexible and synergistic regulation of multiple properties of colloidal crystals remains a significant challenge. Here, we inspire from Brazilian opals to self-assemble polymer nanoparticles in the gaps of a single-layer opal substrate ...
Xu Yang, Zeying Zhang, Hongyu Sun, Yang Yun, Hongfei Xie, Zhiyu Tan, Huadong Wang, Yaqi Yang, Bingda Chen, Haoran Teng, Xiangyu Pan, Mingtong Yang, Yali Sun, Yanlin Song, Meng Su   +14 more
openaire   +2 more sources

The role of bimodal grain size distribution in nanocrystalline shape memory alloys

Smart materials and structures (Print), 2018
We report on a phase field simulation study of the effects of grain size and grain size distribution on martensitic transformations in shape memory alloys (SMAs). Recent experimental studies of polycrystalline SMAs revealed interesting grain size effects
Jakub Mikula, S. Quek, S. Joshi, David T. Wu, R. Ahluwalia   +4 more
semanticscholar   +1 more source

Three-Dimensionally Printed Hyperelastic Bone Scaffolds Accelerate Bone Regeneration in Critical-Size Calvarial Bone Defects

Plastic & Reconstructive Surgery, 2019
Background: Autologous bone grafts remain the gold standard for craniofacial reconstruction despite limitations of donor-site availability and morbidity. A myriad of commercial bone substitutes and allografts are available, yet no product has gained widespread use because of inferior clinical outcomes. The ideal bone substitute
Yu-Hui, Huang, Adam E, Jakus, Sumanas W, Jordan, Zari, Dumanian, Kelly, Parker, Linping, Zhao, Pravin K, Patel, Ramille N, Shah   +7 more
openaire   +2 more sources

3D printing of strontium-doped hydroxyapatite based composite scaffolds for repairing critical-sized rabbit calvarial defects

Biomedical Materials, 2018
Abstract In this study, strontium substituted hydroxyapatite (Sr-HAP) was synthesized using collagen type I and citrate as bi-templates and the obtained nanoparticles with high similarity to natural bone minerals were made into composite scaffolds with interconnected porous structure using a three-dimensional (3D) printing technique ...
Yun Luo, Shangsi Chen, Yufei Shi, Jun Ma
openaire   +2 more sources

Layered Antimicrobial Selenium Nanoparticle–Calcium Phosphate Coating on 3D Printed Scaffolds Enhanced Bone Formation in Critical Size Defects

ACS Applied Materials & Interfaces, 2020
Preventing bacterial colonization on scaffolds while supporting tissue formation is highly desirable in tissue engineering as bacterial infection remains a clinically significant risk to any implanted biomaterials. Elemental selenium (Se0) nanoparticles have emerged as a promising antimicrobial biomaterial without tissue cell toxicity, yet it remains ...
Cedryck Vaquette, Nathalie Bock, Phong A. Tran   +2 more
openaire   +5 more sources

Critical size of crack propagation from residual void in micro via in printed wiring boards

2010 Proceedings 60th Electronic Components and Technology Conference (ECTC), 2010
The micro-via was fabricated with diameter of 200 to 400μm, inner hole plate thickness of 18μm, hole land thickness of 18 to 20μm, and solder resist thickness of 13μm on hole land. We investigated that the size of residual void increased as that of micro-via increased; also, dominance of micro-via cracking was observed when temperature was applied at ...
openaire   +1 more source