Results 131 to 140 of about 156,207 (308)

Affine Connections for the Cartesian Stiffness Matrix

, 1997
In this paper, we study the 6 \Theta 6 Cartesian stiffness matrix. We show that the stiffness of a rigid body subjected to conservative forces and moments is described by a (0; 2) tensor which is the Hessian of the potential function. The key observation
Vijay Kumar, Milos Zefran
core  

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

Advanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam, Seon Yeong Chae, Young Woo Kwon, Hye Jin Heo, Hye Rin Lee, Ji Hyeok Lee, Dong‐Wook Han, Yun Hak Kim, Suck Won Hong   +8 more
wiley   +1 more source

H-Ras Transformation of Mammary Epithelial Cells Induces ERK-Mediated Spreading on Low Stiffness Matrix. [PDF]

Adv Healthc Mater, 2020
Plunkett C, Kumar A, Yrastorza J, Hou YH, Placone JK, Grennan G, Engler AJ.   +6 more
europepmc   +1 more source

Tissue‐Stimulator Platform for Electrically Stimulating Pancreatic β‐Cells for Long‐Term Functional Regulation

Advanced Functional Materials, EarlyView.
We present a tissue‐stimulator platform for seamless electrode integration with pancreatic tissue, applying uniform electrical stimulation through optimized design with biohybrid 3D printing. Advantageous effects of electrical stimulation on β‐cell function were observed, including enhanced calcium signaling, islet morphology, and maturation.
Jihwan Kim, Uijung Yong, Myungji Kim, Jaewook Kim, Yeonggwon Jo, In Kyong Shim, Song Cheol Kim, Jinah Jang   +7 more
wiley   +1 more source

Three-dimensional matrix stiffness-based stem cell soil: Tri-phase biomechanical structure promoted human dental pulp stem cells to achieve pulpodentin regeneration

Materials Today Bio
The regeneration of the pulp-dentine complex is characterized by organizational diversity, with both dentine and pulp being essential for regenerating a complete tooth-like structure.
Xiujuan Li, Yijing Xia, Zhiying Wang, Ziruo Yin, Maotao Weng, Feng Tian, Jie Kang, Yuanjiao Li, Peixuan Ding, Xing Liu, Bin Zhao, Lu Wang   +11 more
doaj   +1 more source

Mass and Stiffness Correlation Using a Transformation Matrix

Infrastructures
Model correlation techniques are methods used to compare two different models, usually a numerical model and an experimental model. According to the structural dynamic modification theory, the experimental mode shapes estimated by modal analysis can be expressed as a linear combination of the numerical mode shapes through a transformation matrix T.
Natalia García Fernández, Pelayo Fernández Fernandez, Rune Brincker, Manuel Aenlle López   +3 more
openaire   +3 more sources

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source

Theory of Stiffness Synthesis by Adding Redundant-actuated Limb on Spatial 6-DOF Parallel Mechanism

Jixie chuandong, 2019
The end stiffness characteristic of the mechanism has great influence on its positioning accuracy， compliance character and dynamic properties. In order to eliminate the configuration singularity， as well as to enhance its stiffness and accuracy， better ...
Shuangshuang Zhang, Hongtao Yang, Qigeng Liu   +2 more
doaj  

In silico quantification of the stiffness perceived by cells inside porous collagen-based scaffolds

Materials & Design
Stiffness is a pivotal property of the insoluble matrix surrounding cells, and a known regulator of multiple cell phenotypes. Yet, no universal metric to quantify the stiffness perceived by cells in 3D matrices exists.
Oliver Santos-Lopes, Dimitrios S. Tzeranis, Vasileios Vavourakis   +2 more
doaj   +1 more source

Reduction of dynamic cable stiffness to linear matrix polynomial

, 1993
For the dynamic stiffness of a sagging cable subject to harmonic boundary displacements, frequency-dependent closed-form analytic functions can be derived from the corresponding continuum equations.
Starossek, Uwe
core   +1 more source