Results 131 to 140 of about 306,107 (293)
Optical Detection and Modeling of Lithium Deposition on Copper Current Collectors
Advanced Materials Interfaces, EarlyView.ABSTRACT Understanding lithium (Li) deposition on copper (Cu) substrates is essential for improving the performance and lifetime of zero–excess lithium metal batteries. In this study, Li deposition was investigated under realistic coin–cell conditions using complementary scanning electron microscopy and laser scanning microscopy. A semi–automatic image
Tjark T. K. Ingber +4 more
wiley +1 more source
Systems of quadratic forms [PDF]
Mémoires de la Société mathématique de France, 1979 openaire +2 more sources
Algebraic systems of quadratic forms of number fields and function fields
Manuscripta Mathematica, 1989 If \(F\subset L\) is a finite extension of fields of characteristic \(\neq 2\) then a quadratic form \(\phi\) over \(F\) is algebraic (resp. a scaled trace form) if \(\phi\) is Witt equivalent to the trace form \(\text{Tr}_{L/F}()\) (resp. to \(\text{Tr}_{L/D}()\) for some \(\lambda \in L^*)\). Given a form \(\phi\) over \(F\) one wants to decide if \(\
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Development of Laterally Graded X‐Ray Multilayer Optics
Advanced Materials Technologies, EarlyView.This work presents the development of laterally graded X‐ray multilayer optics with both constant and variable lateral gradients. By precisely controlling substrate speed profiles and mask design, these multilayers achieve highly accurate lateral gradients and excellent sagittal thickness uniformity, making them ideal for spectroscopy application at ...
Arindam Majhi +11 more
wiley +1 more source
Simple robust control laws for robot manipulators. Part 2: Adaptive case [PDF]
A new class of asymptotically stable adaptive control laws is introduced for application to the robotic manipulator. Unlike most applications of adaptive control theory to robotic manipulators, this analysis addresses the nonlinear dynamics directly ...
Bayard, D. S., Wen, J. T.
core +1 more source
On zeros of a system of quadratic forms in 3 variables
Journal of Algebra, 2016 Abstract Let k be a field of characteristic distinct from 2, f 1 , f 2 , f 3 quadratic forms in 3 variables over k. We prove that these forms have a common zero over k if and only if the quadratic form u 1 f 1 + u 2 f 2 + u 3 f 3 is isotropic over the field
openaire +1 more source
4D Printing of Multimaterial Flexible Magneto‐Active Polymers
Advanced Materials Technologies, EarlyView.Magneto‐active polymers are 3D‐printed with tunable mechanical and magnetic properties using both superparamagnetic and hard ferromagnetic fillers. Nano‐CT imaging reveals the spatial distribution of particles within the matrix. Programmable magnetization patterns and soft, flexible architectures enable responsive actuation, offering exciting ...
Naji Tarabay +6 more
wiley +1 more source
Chaos-based audio encryption: Efficacy of 2D and 3D hyperchaotic systems
Franklin OpenSecure communication in the digital age is necessary; securing audio data becomes very critical since this is normally transmitted across susceptible networks.
Thejas Haridas +4 more
doaj +1 more source
Development of Heat Engines Powered by Twisted and Coiled Polymer Fiber Actuators
Advanced Materials Technologies, EarlyView.Continuously rotating engines driven by thermally responsive actuating materials can turn waste heat into useful energy. For the first time heat engines operated by twisted and coiled polymer fiber actuators are demonstrated with engine design guided by two simple analytical models.
Geoffrey M. Spinks +2 more
wiley +1 more source
Online Learning of Stabilizing Controllers Using Noisy Input-Output Data and Prior Knowledge
IEEE Open Journal of Control SystemsThis paper presents online prior-knowledge-based data-driven approaches for verifying stability and learning a stabilizing dynamic controller for linear stochastic input-output systems. The system is modeled in an autoregressive exogenous (ARX) framework
Nariman Niknejad +2 more
doaj +1 more source