Results 31 to 40 of about 128,247 (281)
PhotonicsSilicon (Si) and silicon carbide (SiC) are second- and third-generation semiconductor materials with excellent properties that are particularly suitable for applications in scenarios such as high temperature, high voltage, and high frequency.
Weisheng Cheng +5 more
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Scientific Reports, 2014 AbstractThe control of spatial propagation properties of narrow light beams such as divergence, focusing or imaging are main objectives in optics and photonics. In this letter, we propose and demonstrate experimentally a flat focusing mirror, based on an especially designed dielectric structure without any optical axis.
Cheng, Yu Chieh +7 more
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Recent development of flat supercontinuum generation in specialty optical fibers
Opto-Electronic Advances, 2019 Supercontinuum (SC) generation has attracted a significant scientific interest in the past decades due to its promising applications covering the fields of metrology, spectroscopy, defense, as well as medical treatments.
Liu Huanhuan +4 more
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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023 Precision flat surfaces are required for the precision surface plates of measurement instruments and the sliding components of precision machine tools.
Masakazu ARUGA +4 more
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Asymptotic Flatness in Rainbow Gravity [PDF]
, 2006 A construction of conformal infinity in null and spatial directions is constructed for the Rainbow-flat space-time corresponding to doubly special relativity.
Amelino-Camelia G Lukierski J +8 more
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Journal of Algebra, 1999 The context of this paper is complete cohomology and modules are of type \((FP)_\infty\). Let \(\text{LH}{\mathbf F}\) denote the class of hierarchically decomposable groups and \(\text{H}_1{\mathbf F}\) the subclass of groups acting on a finite dimensional contractible CW-complex, in such a way that the setwise stabiliser of each cell is equal to the ...
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Communications in Algebra, 2015 Let $R$ be a ring and $M$ be a right $R$-module. $M$ is called neat-flat if any short exact sequence of the form $0\to K\to N\to M\to 0$ is neat-exact i.e. any homomorphism from a simple right $R$-module $S$ to $M$ can be lifted to $N$. We prove that, a module is neat-flat if and only if it is simple-projective.
Buyukasik, Engin, Durgun, Yilmaz
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Real-Time Curvature Defect Detection on Outer Surfaces Using Best-Fit Polynomial Interpolation
Sensors, 2012 This paper presents a novel, real-time defect detection system, based on a best-fit polynomial interpolation, that inspects the conditions of outer surfaces. The defect detection system is an enhanced feature extraction method that employs this technique
Ahmed Patel +2 more
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Investigation and Optimization of Load Distribution for Tandem Cold Steel Strip Rolling Process
Metals, 2020 In order to improve the cold rolled steel strip flatness, the load distribution of the tandem cold rolling process is subject to investigation and optimization.
Xin Jin +5 more
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Solutions to Cosmological Problems with Energy Conservation and Varying c, G and Lambda
, 2000 The flatness and cosmological constant problems are solved with varying speed of light c, gravitational coupling strength G and cosmological parameter Lambda, by explicitly assuming energy conservation of observed matter.
Albrecht A. +3 more
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