Results 71 to 80 of about 156,245 (342)

Ionic Control of Microstructure and Lubrication in Charged, Physically Cross‐Linked Hydrogels

Advanced Functional Materials, EarlyView.
Here, charged, physically cross‐linked poly(methacrylamide‐co‐methacrylic acid) hydrogels stabilized by a short‐range attractive, long‐range repulsive potential is investigated. This work uncovers how salt addition alters not only swelling, but also the microstructure and dynamics, near‐surface stiffness and charge, and ultimately, its lubricity. Salts
Alexander Deptula, Rosa M. Espinosa‐Marzal   +1 more
wiley   +1 more source

Mechanical Properties of Architected Polymer Lattice Materials: A Comparative Study of Additive Manufacturing and CAD Using FEM and µ‐CT

Advanced Functional Materials, EarlyView.
This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker, Thierry Roland, Damien Favier, Antoine Egele, Michael Heymann, Cosima Stubenrauch   +5 more
wiley   +1 more source

Selection of Polymer Materials for Micro Slide Bearings With Respect to Minimization of Resistance to Motion

IEEE Access, 2020
Values of static and kinetic friction coefficient in micro slide bearings, consisting of journals and bushings (with the diameter of 3.5 mm) made of pairs of 5 polymer materials (16 chosen combinations of PA11, ABS, PC, PS and PETP), were determined.
Zbigniew Kusznierewicz, Marcin Michalowski, Sergiusz Luczak, Karol Baginski, Blazej Kabzinski, Maciej Zams   +5 more
doaj   +1 more source

Some physical properties of seeds and splits of Desi chickpea (Kaka var. [PDF]

پژوهش‌های حبوبات ایران, 2010
Some physical properties such as geometrical, gravimetrical, frictional and aerodynamic features of seeds of Desi chickpea and its splits were studied at a moisture content of 8.2 and 9.0% w., respectively from north-western of Iran.
Seyed Mohamadali Razavi, Elham Zaerzadeh, Neshat Khafaji, Mandana Pahlevani   +3 more
doaj   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Friction Behavior Produced in The Course of a Contact Enabled Between Composite Materials and Eco-Friendly Soles Prototypes Made of Elastomeric Material with Regard to Ice-Covered Surface

Tribology in Industry, 2019
The subject matter of the present research constitutes a study of the technique of friction between samples and prototypes of soles made of composite materials comprising natural rubber characterized with ingredients originating from renewable sources ...
M. Kandeva, N. Dishovsky
doaj   +1 more source

Development and validation of an integrated mechatronic apparatus for measurement of friction coefficients of agricultural products

Information Processing in Agriculture, 2020
An integrated mechatronic apparatus was developed based on tilting plate method in order to precisely measure static friction coefficient (SFC) and dynamic friction coefficient (DFC) of agricultural products.
S.M. Shafaei, A. Nourmohamadi-Moghadami, S. Kamgar, M. Eghtesad   +3 more
doaj   +1 more source

A Smart Bio‐Battery Facilitates Diabetic Bone Defect Repair Via Inducing Macrophage Reprogramming and Synergistically Modulating Bone Remodeling Coupling

Advanced Functional Materials, EarlyView.
This research presents a novel implantable bio‐battery, GF‐OsG, tailored for diabetic bone repair. GF‐OsG generates microcurrents in high‐glucose conditions to enhance vascularization, shift macrophages to the M2 phenotype, and regulate immune responses.
Nanning Lv, Haifu Sun, Wenxiang Tang, Yonggang Li, Zhonglai Qian, Lihui Hong, Chong Chen, Hongye Li, Jiaxiang Bai, Yusen Qiao, Mingming Liu   +10 more
wiley   +1 more source

Analysis of a dry friction problem under small displacements: application to a bolted joint [PDF]

, 2003
This study presents an analysis of the problem of macroscopic contact of steel upon steel with dry friction, in the specific case of a bolted joint. The configurations of these types of joints result in very small displacements and interface sliding ...
Armstrong, Brockley, E Yettou, Ferrero, J.F Ferrero, J.J Barrau, Lim, Martins, Rabinowicz, Richardson, Rigney, S Rivallant   +11 more
core   +2 more sources