Results 81 to 90 of about 391,497 (318)

How to Manufacture Photonic Metamaterials

Advanced Materials Technologies, EarlyView.
Metamaterials boast applications such as invisibility and “hyperlenses” with resolution beyond the diffraction limit, but these applications haven’t been exploited in earnest and the market for them hasn’t grown much likely because facile and economical methods for fabricating them without defect has not emerged.
Apurba Paul, Gregory Timp
wiley   +1 more source

Some Bivariate Smooth Compactly Supported Tight Framelets with Three Generators

Abstract and Applied Analysis, 2013
For any dilation matrix with integer entries and , we construct a family of smooth compactly supported tight wavelet frames with three generators in .
A. San Antolín, R. A. Zalik
doaj   +1 more source

A rigorous time bound for factoring integers [PDF]

Journal of the American Mathematical Society, 1992
In this paper a probabilistic algorithm is exhibited that factors any positive integernninto prime factors in expected time at mostLn[12,1+o(1)]{L_n}[\tfrac {1}{2},1 + o(1)]forn→∞n \to \infty, whereLx[a,b]=exp(b(log⁡x)a(loglog⁡x)1−a){L_x}[a,b] = {\text {exp}}(b{(\log x)^a}{({\text {log}}\log x)^{1 - a}}).
Lenstra, H.W., Pomerance, C.
openaire   +4 more sources

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song, Mohan Wang, Frank P. Payne, Patrick S. Salter, Tongyu Liu, Steve J. Elston, Martin J. Booth, Stephen M. Morris, Julian A. J. Fells   +8 more
wiley   +1 more source

On subgroups product graph of finite groups [PDF]

BIO Web of Conferences
This paper explores Subgroup Product Graphs (SPG) in cyclic groups, presenting a Vertex Degrees Formula based on the prime factorization of a positive integer n.
Abd Shakir Jawad, Shelash Hayder B.
doaj   +1 more source

Ellipticity‐Controlled Exceptional Points and Cross‐Polarized Phase Singularities in Multi‐Layer Silicon Guided Mode Resonant Metasurfaces

Advanced Optical Materials, EarlyView.
Omni‐polarizers that pull all input polarization states to an elliptical or linear polarization can be made using highly resonant bi‐layer metasurfaces. The ellipticity of the selected polarization can be controlled by choosing the layer separation.
Ben Goldberg, Shuang Zhang, Mark Lawrence   +2 more
wiley   +1 more source

Solvability of certain exponential Lebesgue-Nagell equations 𝑥 2 + 𝑝 𝑚 = 𝑦 [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2023
In this article, we first investigate the exponential Lebesgue-Nagell equation as shown in the title. Eventually, we can establish a necessary and sufficient criterion for having an integer solution to such an equation under the conditions that 𝑝 ≡ 3 ...
Patcharee Wongsason, Sawian Jaidee
doaj  

Single‐Emitter White OLEDs via Microcavity Spectral Engineering

Advanced Optical Materials, EarlyView.
This research introduces a simple, eco‐friendly approach for fabricating ITO‐free white OLEDs by converting blue emission into broadband white light using microcavity engineering. The emitted color can be adjusted by changing the cavity thickness, offering a scalable method ideal for sustainable lighting applications Abstract White organic light ...
Manish Kumar, Arpan Dutta, Hassan A. Qureshi, Michael A. Papachatzakis, Ahmed Gaber Abdelmagid, Konstantinos S. Daskalakis   +5 more
wiley   +1 more source

A Trade‐Off between Pulse Energy and Stability in Seeded Free‐Electron Lasers

Advanced Photonics Research, EarlyView.
Seeded free‐electron lasers (FELs) require balancing competing factors for optimal performance. This work analyzes how dispersion strength influences output in high‐gain harmonic generation. Results reveal a trade‐off: maximizing pulse energy often comes at the cost of reduced stability and vice versa.
Li Zeng, Huaiqian Yi, Xiaofan Wang, Chao Feng, Weiqing Zhang   +4 more
wiley   +1 more source

Particle Swarm Optimization Algorithm for Integer Factorization Problem (IFP)

, 2015
This paper presents particle swarm optimization (PSO) method to find the prime factors of a composite number. Integer factorization is a well known NP hard problem and security of many cryptosystem is based on difficulty of integer factorization.
Bhargab Choudhury, Sangita Neog
semanticscholar   +1 more source