用于组织工程应用的辅助双轴基质拉伸装置的设计和评估
Gengyao Wei1, Fraser Birks1, Daniel Bax1
1Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FT, UK.
Biomaterials advances
|April 17, 2025
概括
研究人员开发了3D打印的辅助性网格,用于对组织工程支架施加双轴应变. 这种新的方法增强了机械生物学和组织工程中的细胞反应研究.
科学领域:
- 生物材料科学 生物材料科学
- 机械生物学 机械生物学
- 组织工程是组织工程.
背景情况:
- 机械力对于细胞功能至关重要.
- 将多轴应变应用于3D组织工程基板是一项挑战.
研究的目的:
- 引入一种新的方法,用于将双轴应变应用于载有细胞的基板.
- 使用3D打印的辅助性网格将单轴张力转换为双轴张力.
主要方法:
- 设计和制造了3D打印的辅助性重新进入的蜂巢网格.
- 聚烯 (PP) 和聚乳酸 (PLA) 网格在机械性能方面进行了比较.
- 人体皮肤纤维细胞在紧张的原水凝基板上进行培养.
主要成果:
- 聚烯网格显示出比PLA网格更高的合规性和柔性.
- 与PLA相比,PP网格具有显著较低的拉力模块和更高的最终拉力应变.
- 在双轴应变下,细胞面积比增加了59%,随机对齐保持.
结论:
- 3D打印的辅助性网格为双轴机械刺激提供了一种多功能工具.
- 这种方法通过模拟生理条件来推进机械生物学和组织工程的研究.
相关概念视频
Deformation of Member under Multiple Loadings
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Stress Concentrations in Circular Shafts
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
Eccentric Axial Loading in a Plane of Symmetry
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
Bending of Curved Members - Strain Analysis
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member is the...
The important part of bending analysis for such a member is the...
Design of Prismatic Beams for Bending
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and stress...
Stresses under Combined Loadings
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...


