Results 151 to 160 of about 132,138 (320)

ASPECTS REGARDING THE APPLICATIONS OF THE NANOINDENTER IN THE CHARACTERIZATION OF ADVANCED MATERIALS

Nonconventional Technologies Review, 2016
The development of new materials is a research area with major implications in all fields, starting with the industry up to medical sciences. The ability to use these new materials in areas where their impact will be significant is largely dependent on ...
Traian Octavian Costea, Ovidiu Gheorghe Moldovan, Ioan Moga   +2 more
doaj  

Transition between Friction Modes in Adhesive Contacts of a Hard Indenter and a Soft Elastomer: An Experiment

Lubricants
The tangential adhesive contact (friction) between a rigid steel indenter and a soft elastomer at shallow indentation depths, where the contact exists mainly due to adhesion, is investigated experimentally.
Iakov A. Lyashenko, Thao H. Pham, Valentin L. Popov   +2 more
doaj   +1 more source

Further analysis of indentation loading curves: Effects of tip rounding on mechanical property measurements

, 1998
The effects of indenter tip rounding on the shape of indentation loading curves have been analyzed using dimensional and finite element analysis for conical indentation in elastic-perfectly plastic solids.
Zheng ZM(郑哲敏), Cheng, YT (reprint author), GM Corp, Global Res & Dev Operat, Phys & Phys Chem Dept, Warren, MI 48090 USA., Cheng YT   +2 more
core   +1 more source

Formation of Quasi‐Decoupling Interface on Li‐Metal Anodes in High Donor Electrolyte

Advanced Functional Materials, EarlyView.
Li‐metal anode (LMA) is stabilized by introducing Li2Te2 as an electrolyte additive for Li‐metal batteries. Upon contact with Li, Li2Te2 spontaneously converts to Li2Te, which electronically isolates Li from dimethyl sulfoxide due to its large bandgap and minimal Bader charge transfer.
Hyerim Kim, Sunggun Lim, Shivam Kansara, Jimin Park, Hyoju Lee, Hyokyeong Kang, Soohyung Park, Chihyun Hwang, Hansu Kim, Jang‐Yeon Hwang   +9 more
wiley   +1 more source

DETERMINATION OF FRACTURE TOUGHNESS OF BRITTLE MATERIALS BY INDENTATION

, 2015
Fracture toughness is one of the crucial mechanical properties of brittle materials such as glasses and ceramics which demonstrate catastrophic failure modes.
冯义辉, 张泰华, Zhang, TH (reprint author), Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Zhejiang, Peoples R China.   +2 more
core  

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

Advanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett, Shahad K. Alsaiari, John L. Daristotle, Timothy A. Forster, Alicia Lau, Dhruv Varshney, Rania Afaneh, Andrew R. Hanna, Charles Sloane, David Mankus, Haitao Yu, Jiali Zhai, DongSoo Yun, Lisa H. Tostanoski, Abigail Lytton‐Jean, Dan H. Barouch, Charlotte E. Conn, Robert Langer, Ana Jaklenec, Calum J. Drummond   +19 more
wiley   +1 more source

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

Swelling‐Induced Stress‐Assisted Transfer of Nanodiamond Arrays With a PVA Carrier Tape for Conformal Bio‐Integrated Sensing and Labelling

Advanced Functional Materials, EarlyView.
This work introduces a swelling‐induced, stress‐assisted water‐soluble PVA tape strategy to transfer‐print nanodiamond quantum‐sensor arrays onto soft, curved biological interfaces. The room‐temperature, water‐triggered process achieves >98% fidelity and residue‐free integration, enabling conformal quantum sensing on contact lenses, neural probes, and ...
Luyao Zhang, Lingzhi Wang, Xinhao Hu, Tai Nam Yip, Mingze Sun, Jixiang Jing, Lizhi Xu, Yuan Lin, Yong Hou, Zhiqin Chu   +9 more
wiley   +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  

Spatiotemporal Drug Delivery via a Neonatal Spinal Cord ECM Hydrogel for Biomimetic Microenvironment Remodeling After Spinal Cord Injury

Advanced Functional Materials, EarlyView.
A biomimetic hydrogel derived from neonatal spinal cord ECM (DNSCM) delivers LAMB2 protein and ISP peptide to remodel the inhibitory injury microenvironment. The system sustains drug release, upregulates pro‐regenerative LAMB2, downregulates inhibitory CSPG, and promotes axonal regeneration.
Shiyu Fu, Liangchao Du, Runlin Wen, Kai Zhang, Yu Zhou, Wanrong Ma, Zhiquan Yang, Dingyang Liu, Xing Li   +8 more
wiley   +1 more source