Results 171 to 180 of about 2,856 (267)

Atemporality from Conservation Laws of Physics in Lorentzian-Euclidean Black Holes. [PDF]

Found Phys
De Bianchi S, Capozziello S, Battista E.
europepmc   +1 more source

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation. [PDF]

Light Sci Appl
Zhou C, Jin R, He H, Huang J, Li G, Huang L.   +5 more
europepmc   +1 more source

Dynamical analysis of particular classes of linear time-delay singular control systems defined over finite and infinite time interval [PDF]

, 2013
openaire   +1 more source

Fiber‐Format Flexible Linear Electrostatic Motors

Advanced Materials, EarlyView.
A flexible coaxial fibre‐format electrostatic motor enables backdrivable and reversible linear actuation with high force density and functionality under bending, offering a scalable actuation platform for soft and wearable robotics. ABSTRACT Linear motion is fundamental to robotics, yet existing solutions are either rigid electromagnetic motors or ...
Sylvain Schaller, Herbert Shea
wiley   +1 more source

Maximal Dissipation and Well-Posedness of the Euler System of Gas Dynamics. [PDF]

Arch Ration Mech Anal
Feireisl E, Jüngel A, Lukáčová-Medvid'ová M.   +2 more
europepmc   +1 more source

Geometric configurations of singularities for quadratic differential systems with total finite multiplicity lower than 2

Agraïments/Ajudes: The third author is supported by NSERC. The fourth author is also supported by the grant 12.839.08.05F from SCSTD of ASM and partially by NSERC.In [3] we classified globally the configurations of singularities at infinity of quadratic ...
Schlomiuk, Dana, Artés, Joan Carles, Vulpe, Nicolae, Llibre, Jaume   +3 more
core  

Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion

Advanced Materials, EarlyView.
We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita, Minghao Nie, Shoji Takeuchi   +2 more
wiley   +1 more source

A Partitioned Finite Difference Method for Heat Transfer with Moving Line and Plane Heat Sources. [PDF]

Entropy (Basel)
Li J, Jiang Y.
europepmc   +1 more source

Nonplanar Bouligand Architectures for Enhanced Mechanical Performance in Cementitious Composites

Advanced Materials, EarlyView.
Inspired by the impact region of the Mantis shrimp dactyl club, nonplanar additive manufacturing translates sinusoidal Bouligand architectures into cementitious composites. Printing‐induced anisotropy and architected interfaces promote distributed damage and arrest crack propagation, enhancing strength and energy absorption.
Yu Wang, Loukham Shyamsunder, Phani Saketh Dasika, Andrew Nguyen, David Kisailus, Jan Olek, Jeffrey P. Youngblood, Pablo D. Zavattieri   +7 more
wiley   +1 more source