Results 61 to 70 of about 6,012 (217)

A Worm‐Inspired Origami Robot with Multimodal Locomotion for Adaptive Mobility in Complex Pipeline Environments

Advanced Science, EarlyView.
An origami worm‐inspired robot achieves multimodal locomotion in confined pipelines through mechatronic integration that embeds actuation, control, and communication within each origami module. Large, reversible configuration and dimensional changes enable 25 gaits synthesized by a unified framework across peristaltic, inchworm, and wheel‐rolling modes
Qiwei Zhang, Kangning Tan, Zihan He, Hongsen Pang, Yanjie Wang, Hongbin Fang, Jian Xu   +6 more
wiley   +1 more source

Beyond Percolation: Graphene‐Enabled Network Reinforcement Enhances Thermal Transport in Paraffin Phase‐Change Composites

Advanced Science, EarlyView.
Expanded‐graphite/graphene‐nanoplatelet hybrids deliver a near‐order‐of‐magnitude thermal‐conductivity enhancement in paraffin phase‐change materials. A microCT‐informed 3D modeling framework resolves the percolating EG backbone and captures sub‐voxel GNP enrichment, quantitatively linking microstructure to heat flow and revealing a graphene‐enabled ...
Thomas Hoke, Jackson Hoke, Shucheng Guo, Brittany Chan, Xi Chen   +4 more
wiley   +1 more source

A Symmetric Cogeneration Fuel Cell for Coupled Production of Hydrogen, Ammonia and Formate

Advanced Science, EarlyView.
A symmetric cogeneration fuel cell integrating value‐added chemical synthesis with electricity generation by coupling formaldehyde oxidation with the nitrate reduction was developed. This work highlights the broader potential of symmetric cogeneration fuel cells as a general platform for rational reaction pairing, offering a practical pathway to lower ...
Yingjie Song, Peimiao Zou, Renhang Wang, Qi Zhang, Yisong Han, Christopher Waldron, Marc Walker, Ben G. Breeze, Shanwen Tao   +8 more
wiley   +1 more source

Dynamic Stability of a Cylindrical Shell Made of a Material of Different Modulus Plased on a Viscous-elastic Foundation

Structural Mechanics of Engineering Constructions and Buildings
The problem of stability of a cylindrical shell with various modules on a viscoelastic base is investigated. It is assumed that the shell of a circular cross section is subjected to force and loses stability in an axisymmetric form.
Natig S. Rzayev
doaj   +1 more source

Generation of Self‐Organizing Macrovascular Constructs by Bioprinting Human iPSC‐Derived Mesodermal Progenitor Cells

Advanced Science, EarlyView.
ABSTRACT Vascularization remains a major obstacle in tissue engineering. Here, we introduce a bioprinting strategy to generate centimeter‐scale, self‐organizing “mother vessel” constructs from iPSC‐derived hiMPCs. By optimizing bioink composition, printing was accomplished in a single‐step approach. Within one week, hiMPCs differentiated into both CD31+
Leyla E. Dogan, Nathaly A. Chicaiza‐Cabezas, Florian Kleefeldt, Philipp Wörsdörfer, Jürgen Groll, Süleyman Ergün   +5 more
wiley   +1 more source

Study of Deformation of Flexible Long Shallow Noncircular Cylindrical Panels with Clamped Longitudinal Edges by Refined Theory

Механика машин, механизмов и материалов, 2015
The basic equations and relations of geometrically nonlinear Tymoshenko type theory of transversely isotropic flexible long shallow noncircular cylindrical shells were considered and the solvable equation for the deflection of the shell was built on ...
Mykhailo V. Marchuk, Roman I. Tuchapskyy, Vira S. Pakosh   +2 more
doaj  

Simulation of Circular Cylindrical Shell Vibrations in Radioelectronic Equipment

Известия высших учебных заведений России: Радиоэлектроника
Introduction. One approach to the analysis of complex structures of radioelectronic equipment is based on the construction of finite-difference models of non-stationary processes in structural elements. Such models are aimed at obtaining a convenient and
N. K. Yurkov, E. A. Danilova, I. I. Kochegarov, N. V. Goryachev, A. V. Lysenko   +4 more
doaj   +1 more source

In‐Process Magnetization for 3D Printing of Magnetorheological Elastomer with Heterogeneous Magnetic Profile for Anisotropic Actuation

Advanced Science, EarlyView.
Fully programmable, in‐process 3D magnetization integrated with multi‐material printing enables soft magnetic systems with precise actuation and sensing. Discrete and continuous magnetization profiles drive bending, morphing, and locomotion, demonstrated through strain‐sensing elements, dragonfly‐inspired wings, octopus‐like tentacles, and a serpentine
Phillip Glass, David Hassouna, Udena Epitawala Arachchige, Hyeon Yun Jeong, Sung Hyun Park, Daeha Joung   +5 more
wiley   +1 more source

Phase Velocity and Attenuation of Longitudinal Shear Vibrations of Hollow Poroelastic Cylinders

International Journal of Applied Mechanics and Engineering, 2014
The present paper is devoted to the study of phase velocity and attenuation of longitudinal shear vibrations of hollow poroelastic circular cylinders in the presence of dissipation.
S. Ahmed Shah, S. Javvad Hussaini
doaj   +1 more source

Ultrasound‐Activatable Piezoelectric Hydrogel Reprograms Mitochondrial Epigenetics for Osteoarthritis Therapy via the mTOR/GATD3A Axis

Advanced Science, EarlyView.
An ultrasound‐activatable piezoelectric hydrogel reprograms chondrocyte mitochondrial epigenetics via the mTOR/GATD3A axis, clearing damaged mitochondria and alleviating osteoarthritis progression in both mouse models and human cartilage explants. ABSTRACT The avascular nature of cartilage hinders drug delivery for osteoarthritis (OA) therapy.
Hui Zheng, Pengfei Yan, Peng Liu, Chang Yan, Mengqi Zhao, Zuyong Wang, Chao Ma, Rongkai Zhang, Xi Cui, Swee Hin Teoh   +9 more
wiley   +1 more source