Results 281 to 290 of about 14,465,781 (332)

Liquid Crystal Elastomer Twist Fibers toward Rotating Microengines

Advances in Materials, 2021
Untethered twist fibers do not require end‐anchoring structures to hold their twist orientation and offer simple designs and convenient operation. The reversible responsiveness of these fibers allows them to generate torque and rotational deformation ...
Yunpeng Wang, Jiahao Sun, Wei Liao, Zhongqiang Yang   +3 more
semanticscholar   +1 more source

Molecular dynamics study on tensile strength of twist grain boundary structures under uniaxial tension in copper

, 2020
Grain boundaries (GBs) play an important role in deformation responses and mechanical properties of materials. However, the lack of experimental observations of GBs restricts the in-depth understanding on the mechanical behavior of twist GBs and the ...
Can Cui, Qiang Yu, Wen Wang, Weiwei Xu, Lijie Chen   +4 more
semanticscholar   +1 more source

Twisting cracks in Bouligand structures

Journal of the Mechanical Behavior of Biomedical Materials, 2017
The Bouligand structure, which is found in many biological materials, is a hierarchical architecture that features uniaxial fiber layers assembled periodically into a helicoidal pattern. Many studies have highlighted the high damage-resistant performance of natural and biomimetic Bouligand structures.
Nobphadon, Suksangpanya, Nicholas A, Yaraghi, David, Kisailus, Pablo, Zavattieri   +3 more
openaire   +2 more sources

A twist piezoelectric beam for multi-directional energy harvesting

Smart materials and structures (Print), 2020
This paper develops a twist beam for multi-directional energy harvesting using piezoelectric transduction. The working principle of the multi-directional ability is explained by the theory of a pre-twisted beam.
Guobiao Hu, Junrui Liang, Chunbo Lan, Lihua Tang   +3 more
semanticscholar   +1 more source

Differential-twist Yarn Structures

The Journal of The Textile Institute, 1984
(1984). Differential-twist Yarn Structures. The Journal of The Textile Institute: Vol. 75, No. 1, pp. 72-75.
P. R. Lord, G. Grover, C. H. Chewning
openaire   +1 more source

Government Maturity Structure Twists

SSRN Electronic Journal, 2016
This paper examines the impact of government debt maturity restructuring on ination and the real economy using a New Keynesian model that features a time-varying maturity structure of nominal debt and allows for changes in the monetary/scal policy mix.
Alexandre Corhay, Howard Kung, Gonzalo Morales   +2 more
openaire   +1 more source

Extension twist deformation response of an auxetic cylindrical structure inspired by deformed cell ligaments

, 2020
Recent advances in artificial metamaterials have allowed unique structures to deform in distinct modes not previously found in traditional material form. Auxetic structures that induce twist through deformation have been a focus of recent research.
David T. Farrell, C. McGinn, G. Bennett
semanticscholar   +1 more source

Twist defects in helical sonic structures

Physical Review E, 2003
We analyze theoretically both the acoustic wave propagation in periodic media made of anisotropic materials whose stiffness tensor is uniformly rotating along a given axis x(3) and the defect mode produced by twisting about x(3) one part of the helical structure with respect to the other.
C, Oldano, J A, Reyes, S, Ponti
openaire   +2 more sources

A Twist in fate: evolutionary comparison of Twist structure and function

Gene, 2002
The general requirement to induce mesoderm and allocate cells into different mesodermal tissues such as body muscle or heart is common in many animal embryos. Since the discovery of the twist gene, there has been great progress toward unraveling the molecular mechanisms that control mesoderm specification and differentiation. Twist was first identified
Irinka, Castanon, Mary K, Baylies
openaire   +2 more sources

Twist in Balanced-ply Structures

Journal of the Textile Institute, 1998
The theory of the bending and twisting of thin rods of uniform circular cross-section, and inextensible centre-line, is used to find an equation for the pretwist that must be inserted into the singles strands to create a balanced two-ply yarn of specified ply twist. In the final section, this result is extended to an N-ply structure.
Fraser, W. B., Stump, D. M.
openaire   +2 more sources