In this paper, we introduce a new simple yet effective strategy to form "hydrogel skins" on polymer-based medical devices with arbitrary shapes. Hydrogel skins can convert any surface of polymer devices into robust, wet, soft, slippery, antifouling, and ionically conductive without affecting the original properties and geometries.
Abstract
Soft wall-climbing robots
Guoying Gu, Jiang Zou, Ruike Zhao, Xuanhe Zhao and Xiangyang Zhu
Science Robotics, 2018, Vol. 3, Issue 25, eaat2874
The ignition of energetic materials (EM) under dynamic loading is mainly controlled by localized temperature spikes known as hotspots. Hotspots occur due to several dissipation mechanisms, including viscoplasticity, viscoelasticity, and internal friction along crack surfaces. To analyze the contributions of these mechanisms, we quantify the ignition probability, energy dissipation, damage evolution, and hotspot characteristics of polymer-bonded explosives (PBXs) with various levels of constituent plasticity of the energetic phase and internal crack face friction.
Zhiqiang Shen, Huilin Ye, Xin Yi, and Ying Li
ACS Nano, Just Accepted Manuscript
Huifang Liu, Hailiang Nie, Chao Zhang, Yulong Li
Composites Sciene and Technology, 2018, https://doi.org/10.1016/j.compscitech.2018.07.040
Hailiang Nie, Tao Suo, Xiaopeng Shi, Huifang Liu, Yulong Li, Han Zhao
International Journal of Impact Engineering, 2018, https://doi.org/10.1016/j.ijimpeng.2018.08.004
In recent years there has been a growing interest into high performance bioinspired adhesives. This communication focuses on the adhesive behavior of a rigid cylinder that indents an elastic layer coated on a rigid substrate. With the assumption of short range adhesive interactions (JKR type) the adhesive solution is obtained very easily starting from the adhesiveless one.
In Abaqus,
g(t) = 1 - ∑(gi * (1-exp(-t/taui));
in which g and gi are dimensionless.
In LS-DYNA,
G(t) = ∑( Gi * exp(-betai * t) );
in which G and Gi are in N/m2
Based on this information, how do we transform the Prony Series terms from one code to another or vice-versa given I don't have the test data available.
It is my first blog entry to iMechanica after long period of only reading.
In this review published in Chemical Soceity Reviews, we systematically revealed the design principles for bioelectronics and discussed hydrogels' merits and potential in bioelectronics.
Abstract
I would like to share our recent work published in Physical Review Letters.
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.205502
