Results 111 to 120 of about 50,752 (264)

Toy nanoindentation model and incipient plasticity

, 2009
A toy model of two dimensional nanoindentation in finite crystals is proposed. The crystal is described by periodized discrete elasticity whereas the indenter is a rigid strain field of triangular shape representing a hard knife-like indenter.
A. Carpio, Amit, Asenjo, Bulatov, Carpio, Carpio, Carpio, Carpio, Cui, de la Fuente, Gerde, Greer, Hirth, Hull, I. Plans, Iooss, Kelchner, Kessler, L.L. Bonilla, Landau, Landau, Lorenz, Marder, Navarro, Pla, Plans, Rubinstein, Schall, Shan, Slepyan, Zhen, Zhu   +31 more
core   +1 more source

On the Origins of Toughness in Corymbia calophylla (Marri Tree) Nuts

Advanced Science, EarlyView.
We uncover the natural toughening mechanisms of the marri nut, including fiber pullout, crack deflection, and a viscoelastic matrix, which enable exceptional energy absorption and ductility comparable to Teflon, with an elastic modulus similar to acrylic.
Wegood M. Awad, Ahmed S. Dalaq, Marieh B. Al‐Handawi, Rezo Getsadze, Oraib Al‐Ketan, James Weston, Mohammed Daqaq, Panče Naumov   +7 more
wiley   +1 more source

Nanoindentation induced anisotropy of deformation and damage behaviors of MgF2 crystals

Journal of Materials Research and Technology
The competition mechanism between the slip motions and cleavage fractures is related to the anisotropy of deformation behaviors, which is essential to manufacture complex optical components.
Yinchuan Piao, Chen Li, Yuxiu Hu, Hailong Cui, Xichun Luo, Yanquan Geng, Feihu Zhang   +6 more
doaj   +1 more source

Mechanostimulatory Cues Determine Intestinal Fibroblast Fate and Profibrotic Remodeling in a Physiodynamic Human Gut‐on‐a‐Chip

Advanced Science, EarlyView.
A healthy gut barrier shields underlying fibroblasts from luminal shear forces, illustrating that “good fences make good neighbors.” Barrier damage exposes fibroblasts to shear stress, inducing cell death and the emergence of stress‐adapted, profibrotic fibroblasts. Sustained shear exposure promotes the formation of stiff aggregates of mechanoadapative
Soyoun Min, Nam Than, Yong Cheol Shin, Elif G. Ertugral, Chandrasekhar R. Kothapalli, Olumuyiwa Awoniyi, Hyun Jung Kim   +6 more
wiley   +1 more source

Effect of the over-ageing treatment on the mechanical properties of AA2024 aluminum alloy. [PDF]

, 2012
The evolution of the hardness of the over-ageing AA2024 alloy scale was followed by measurements of Vickers hardness. The nanoindentation is adapted to the determination of elastoplastic properties (hardness and Young’s modulus) of the matrix and also of
Abrudeanu, Marioara, Alexis, Joël, Lacroix, Loïc, Petit, Jacques-Alain, Radutoiu, Nicoleta, Rizea, Vasile, Vulpe, Sanda   +6 more
core  

Mechanical Overloading‐Induced Nanomineral Crystal Perturbation from the Osteochondral Interface: A Potential Initiator of Osteoarthritis

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Nan Jiang, Rong Ren, Zhan Su, Jiahao Zhou, Pinyin Cao, Sicheng Zhang, Zhen Li, Chao Li, Songsong Zhu   +8 more
wiley   +1 more source

Nanoindentation response of semiconductors

Moldavian Journal of the Physical Sciences, 2008
The paper reviews the nanoindentation behaviour of semiconductors under concentrated load. We consider first, fundamental aspects regarding the mechanical resistance to contact loading of semiconductor single crystals (indentation strain, hardness ...
LeBourhis, E., Patriarche, G.
doaj  

An Implanted Tooth That Can Feel

Advanced Science, EarlyView.
To endow the implanted tooth with masticatory perception, herein we demonstrate that a 3D‐printed piezoelectric‐core/robust‐sheath implanted tooth can rebuild the sensing feedback, serving as “mechanoreceptors” in converting the mechanical chewing force to electrical signals, and up to brain through surrounding alveolar nerve system.
Yaru Cao, Zhenhua Wu, Jiwei Sun, Ke Song, Jiayi Li, Yujin Li, Wenqi Chen, Hanyu Li, Shue Li, Cheng Yang, Silin Liu, Yunyun Han, Bin Su, Yumei Ding   +13 more
wiley   +1 more source

Piezo1 Channel Mediates Mechanically Programmable Drug Delivery to Potentiate Intravesical Chemotherapy

Advanced Science, EarlyView.
This study utilizes programmable mechanical pressure as a therapeutic enhancer to establish a mechano‐chemotherapy strategy. Controlled pressure activates the mechanosensitive ion channel Piezo1 in bladder cancer, triggering a calcium ion cascade that transiently and reversibly amplifies membrane permeability to chemotherapeutics.
Minghai Ma, Xing Li, Minxuan Jing, Zezhong Yang, Jiale He, Jianpeng Li, Xiao Liang, Yunzhong Jiang, Rou Huang, Yuanquan Zhang, Yuanchun Pu, Jiawei Xiu, Yutong Chen, Kaibo Mi, Pu Zhang, Lei Wang, Jinhai Fan   +16 more
wiley   +1 more source

Study of the Mechanical Properties of a Nanostructured Surface Layer on 316L Stainless Steel

Advances in Materials Science and Engineering, 2016
A nanostructured surface layer (NSSL) was generated on a 316L stainless steel plate through surface nanocrystallization (SNC). The grains of the surface layer were refined to nanoscale after SNC treatment.
F. C. Lang, Y. M. Xing, J. Zhu, Y. R. Zhao   +3 more
doaj   +1 more source