Results 91 to 100 of about 527,013 (335)

Quenched Asymptotics for the Discrete Fourier Transforms of a Stationary Process [PDF]

, 2016
David Barrera
openalex   +1 more source

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

Advanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska, Leire Unanue, Itxaso Calafel, Dorleta Otaegui, Jorge L. Olmedo‐Martínez, Lourdes Irusta, Daniel Vinagre, Nora Aranburu, Nerea Casado, Ibon Odriozola, David Mecerreyes   +10 more
wiley   +1 more source

From Thin Films to Nanodots: Bottom‐Up Integration of Fe3O4 on Nb:STO for Functional Oxide Nanostructures

Advanced Materials, EarlyView.
Scalable bottom‐up fabrication of Fe3O4 nanodots on Nb:SrTiO3 using anodic alumina templates enables long‐range ordered arrays with diameters down to 30 nm. STEM highlights the epitaxial growth of Fe3O4 films on Nb:SrTiO3. Complementary polarized neutron reflectometry (PNR) and X‐ray magnetic circular dichroism (XMCD) measurements on continuous films ...
Yifan Xu, Connie Bednarski‐Meinke, Yen‐Po Liu, Erkai Wang, Asma Qdemat, Peijia Yuan, Lilian Maria Vogl, Patrick Schöffmann, Thomas Saerbeck, Chenyang Yin, Gerhard Dehm, Felix Gunkel, Regina Dittmann, Oleg Petracic, Mai Hussein Hamed   +14 more
wiley   +1 more source

Exact SER Analysis of DFrFT-Based QPSK OFDM System over Frequency Selective Rayleigh Fading Channel with CFO

Journal of Computer Networks and Communications, 2016
We present the exact symbol error rate (SER) expression for quadrature phase shift keying (QPSK) modulation in frequency selective Rayleigh fading channel for discrete fractional Fourier transform- (DFrFT-) based orthogonal frequency division ...
Atul Kumar, Maurizio Magarini, Hem Dutt Joshi, Rajiv Saxena   +3 more
doaj   +1 more source

“Tear‐And‐Stack” Twisted SrTiO3 Moiré Superlattices for Precise Interfacial Reconstruction and Polar Topology

Advanced Materials, EarlyView.
The tear‐and‐stack method enables the creation of twisted SrTiO3 bilayers with accurate twist‐angle control, which yield atomically sharp oxide moiré superlattices with emergent exotic topological polar vortices, thereby opening a new pathway for twistronics based on 2D‐like non‐van der Waals oxides.
Yingli Zhang, Jinxin Ge, Shengyao Su, Yuhao Li, Wenxi Zhang, Longji Lyu, Jiahao Song, Yuxin Liu, Yihan Lei, Haopeng Du, Gaokuo Zhong, Boyuan Huang, Jiangyu Li, Changjian Li   +13 more
wiley   +1 more source

Quadratic discrete Fourier transform and mutually unbiased bases [PDF]

, 2010
M. Kibler
openalex   +1 more source

Holographic Whole‐Object Photopolymerization Preserving Director Alignment in Liquid Crystalline Actuators

Advanced Materials, EarlyView.
Holographic microlithography enables the fabrication of fully connected 3D liquid crystalline structures in a single exposure. The process maintains precise control over the director orientation within the entire object, preventing local director distortions typically observed in sequential printing.
Lovish Gulati, Junhee Lee, Reza Norouzikudiani, Jianfeng Li, Carlos Sánchez Somolinos, Antonio DeSimone, Kai Melde, Alexander Song, Peer Fischer   +8 more
wiley   +1 more source

Continuous and Discrete Fourier Transforms, Extension Problems and Wiener-Hopf Equations [PDF]

, 1992
I. Gohberg
openalex   +1 more source

High-precision frequency estimator by using discrete Fourier transform and asymmetric discrete time Fourier transform samples [PDF]

, 2023
Huihao Wu, Lei Fan, Huanhuan Song, Jiyu Jin, Peng Li, Zhenping Lan   +5 more
openalex   +1 more source

Inverse Discrete Fourier Transform-Discrete Fourier Transform Techniques for Generating and Receiving Spectrally Efficient Frequency Division Multiplexing Signals

, 2011
Problem statement: Spectrally Efficient Frequency Division Multiplexing (SEFDM) system promises bandwidth savings by multiplexing overlapped non-orthogonal sub-carriers.
Sahmed Idarwazeh
semanticscholar   +1 more source