Results 151 to 160 of about 32,745 (216)

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source

Regulated Ion‐Diffusion Hydrogels for Subtle and Multimodal Temperature‐Strain Sensing in Wound Monitoring

Advanced Functional Materials, EarlyView.
A soft, dual‐channel hydrogel patch enables simultaneous detection of wound temperature and strain by integrating ion‐diffusion‐mediated thermoelectric and resistive sensing. The conformal design maintains stable performance during motion, capturing subtle inflammatory and mechanical changes for continuous wound monitoring.
Yu Fang, Xinglong Pan, Zhiwei Li, Wanheng Lu, Chang Liu, Yi Zhou, Guo Tian, Ghim Wei Ho   +7 more
wiley   +1 more source

Multimodal Soft Surgical Robots Enabled by Eco‐Degradable, Sterilizable Polymers and Transient Electronics

Advanced Functional Materials, EarlyView.
A compostable PGS soft surgical robot with interchangeable modules integrates transient Mo tactile and Si thermal sensors for dual feedback. The device preserves its function after clinical‐grade sterilization, demonstrates stable actuation and cardiac tissue grasping with real‐time in vivo pulsatile monitoring, and biodegrades post‐use with soil‐safe, 
Minseong Chae, Kyung‐Sub Kim, Gyeong‐Seok Hwang, Jun‐Seok Shim, Sung‐Woo Kim, Yong‐Wu Kim, Jieun Han, Jae‐Young Bae, Jae‐Hwan Lee, Minjung Chae, Jooik Jeon, Joo‐Hyeon Park, You‐Jung Park, Ju‐Yong Lee, Sung‐Geun Choi, Min‐Ha Oh, Yong‐Joong Shin, Young‐In Ryu, Ji‐Woo Gu, Seong‐Yu Choi, Jeong‐Yun Sun, Jung Keun Hyun, Myoung‐Ryul Ok, Sang Yup Kim, Edyta Wyszkowska, Ju‐Young Kim, Kang‐Sik Lee, Seung‐Kyun Kang   +27 more
wiley   +1 more source

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Stress, strain, and NMR

Solid State Nuclear Magnetic Resonance, 2006
Experimental and ab initio results that demonstrate the effect of stress on the nuclear magnetic resonance spectra of materials are shown. The design of a cell that generates uniaxial compressive stress is presented, and results on gallium phosphide and lead nitrate single crystals that illustrate the observable results of the stress are shown. Tensors
J W, Zwanziger, U, Werner-Zwanziger, J L, Shaw, C, So   +3 more
openaire   +2 more sources

The stress-strain relationship for the skin

Journal of Biomechanics, 1976
Abstract The skin is an inelastic material. But in cyclic loading and unloading the stress-strain loop is unique after preconditioning, and is insensitive to strain rate. We define a pseudo strain potential for such a material so that the stresses can be derived from the expression S ij = ∂(ϱ 0 W) ∂e ij , where W is the ...
P, Tong, Y C, Fung
openaire   +2 more sources

On the stress-strain relation for skin

Journal of Biomechanics, 1979
Abstract A simple model of the collagen fiber network in the dermis is used to calculate the strain level at which the stiffness of skin abruptly increases. The calculated critical strain level (57%) agrees roughly with experimental values. It is suggested that entry into the high-modulus region of the stress-strain curve of skin is simply a ...
X, Markenscoff, I V, Yannas
openaire   +2 more sources

Stress–Strain Relations

2021
In the previous chapters, the state of stress at a point was defined in terms of six components of stress, and in addition, three equilibrium equations were developed to relate the internal stresses and the applied forces. These relationships were independent of the deformations (strains) and the material behaviour.
T. G. Sitharam, L. Govindaraju
openaire   +2 more sources

Stress-Strain Analysis And Stress-Strain Relations

1992
Abstract The material in Chapter 2 should be familiar from courses in mechanics of materials and design, and so serves as a review. The notation and sign convention for both stress and strain follow that generally given in the theory of elasticity.
William M Murray, William R Miller
openaire   +1 more source

Stress, Strain, and Mechanotransduction in Cells

Journal of Biomechanical Engineering, 2001
It is widely accepted that numerous cell types respond to mechanical stimuli, yet there is no general agreement as to whether particular cells respond directly to stress, strain, strain-rate, strain-energy, or other mechanical quantities. By recalling the definitions of the mathematical (not physical) concepts of stress and strain, it is suggested ...
openaire   +2 more sources

Nonlinear stress-strain equations

International Journal of Solids and Structures, 1965
Abstract Two unrelated methods which have previously been used in the development of stress-strain equations of nonlinear elasticity are examined. The first is the traditional notion of relating the stress to the strain through a strain energy function and the second is a recent geometrical approach suggested by Stojanovitch.
openaire   +2 more sources