Results 111 to 120 of about 19,950 (296)
THE NEURAL SIGNAL FOR SKIN INDENTATION DEPTH II. Steady Indentations1
, 2020 The glabrous skin of the monkey's hand was stimulated with a waveform that indented the skin at a rate of 0.4 mm/sec, held the skin steadily or nearly steadily indented for 12 sec or longer, and then retracted back to the starting position ...
Dennis A Poulos +9 more
core
Conductive Hydrogels for Exogenous Sensing and Cell Fate Control
Advanced Materials, EarlyView.We engineer electrically conductive hydrogels by combining sulfated glycosaminoglycans with semiconducting polymers. These hydrogels bind bioactive proteins, including growth factors, whose release or retention can be modulated by low‐voltage stimulation. The hydrogels are also integrated as 3D channels in organic electrochemical transistors as part of
Teuku Fawzul Akbar +15 more
wiley +1 more source
Elastic modulus of claystone evaluated by nano-/micro-indentation tests and meso-compression tests
Journal of Rock Mechanics and Geotechnical Engineering, 2017 Toarcian claystone such as that of the Callovo-Oxfordian is a qualified multiphase material. The claystone samples tested in this study are composed of four main mineral phases: silicates (clay minerals, quartz, feldspars, micas) (≈86%), sulphides ...
Christophe Auvray +2 more
doaj +1 more source
E. coli Extracellular Matrix: A Tunable Composite With Hierarchical Structure
Advanced Materials, EarlyView.The complex composite‐like mechanical behavior of E. coli biofilm matrix is the result of a synergic contribution of the rigid curli and swelling pEtN‐cellulose, and emerges from specific ratio and assembly conditions. The interactions between the two fibers govern biofilm hydration and characteristic wrinkling patterns, providing crucial insights for ...
Macarena Siri +7 more
wiley +1 more source
PLoS ONE, 2019 Measurements of Young's moduli are mostly evaluated using strong assumptions, such as sample homogeneity and isotropy. At the same time, descriptions of measurement parameters often lack detailed specifications.
Steven Huth +2 more
doaj +1 more source
Equivalent-energy indentation method to predict the tensile properties of light alloys
Materials & Design, 2019 The EIM (equivalent-energy indentation method) based on equivalent energy principle is proposed to determine the stress-strain relations of materials via spherical indentation.
Hui Chen, Li-xun Cai, Chen Bao
doaj +1 more source
Modeling indentation in linear viscoelastic solids
, 2005 Using analytical and finite element modeling, we study conical indentation in linear viscoelastic solids and examine the relationship between initial unloading slope, contact depth, and viscoelastic properties.
Cheng CM(郑哲敏), Cheng YT(郑仰泽)
core
Influence of Contact Geometry on Hardness Behavior in Nano-indentation
, 2009 In this paper the influence of contact geometry, including the round tip of the indenter and the roughness of the specimen, on hardness behavior for elastic plastic materials is studied by means of finite element simulation.
陈伟民, 郑哲敏, Li M, Cheng YT
core +1 more source
Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels
Advanced Materials Interfaces, EarlyView.When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir +6 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Schematic illustration of a sustainable nanofabrication process: chitosan derived from natural sources is used as a biodegradable thin film resist, patterned via Constant Pulse‐Assisted Force Lithography (CP‐AFL) to create tunable nanogrooves. These grooves template gold nanowire formation, enabling high‐resolution nanopatterning under ambient ...
Paolo Pellegrino +7 more
wiley +1 more source