Results 131 to 140 of about 1,950,575 (284)

Heavy‐Metal‐Free Colloidal Quantum Dots for Photocatalysis

open access: yesSmall, EarlyView.
Heavy‐metal‐free colloidal quantum dots provide sustainable photocatalytic platforms by combining tunable band structures, strong light absorption, and programmable surfaces/interfaces. This Review highlights how core/shell engineering, alloying, defect regulation, ligand design, and hybrid‐interface construction direct charge separation and ...
Xintong Xu, Ge Yang, Qin Li, Dechao Chen
wiley   +1 more source

Cross‐Scale Engineering of Single‐Atom Catalysts from Local Planar Coordination to Spatial Architectures

open access: yesSmall, EarlyView.
This Review presents a cross‐scale framework for single‐atom catalysts, spanning in‐plane and out‐of‐plane coordination; primary coordination, secondary‐sphere interactions, through‐space microenvironments and support interfaces; individual sites and macroscopic architectures; and static design and directed dynamic reconstruction.
Dazhi Yao   +4 more
wiley   +1 more source

Estimation of Synchrophasors in Intelligent Electrical Networks: from Models to Design Restrictions

open access: yesRevista Elektrón, 2017
We first present a detailed review of two popular classes of model based synchrophasor estimators. They are the discrete Fourier transform (DFT) and the Taylor-Fourier transform (TFT) class estimators, which arise from constant or polynomial phasor ...
Francisco Javier Messina   +2 more
doaj  

Spectral analysis of discrete fourier transform by using lab view

open access: yes, 2010
Spectral Analysis of Discrete Fourier Transform (DFT) by Using LabVIEW is an approach by the author to implement the application of Discrete Fourier Transform (DFT) inside Lab View (Laboratory Virtual Instrumentation Engineering Workbench) software ...
Muhammad Zilfikri Bin Zulkifli
core  

Metal‐Organic Framework‐Templated Deconstruction‐Reconstruction Enables One‐Dimensional to Two‐Dimensional Self‐Assembly of Transition Metal Phosphates for High‐Performance Ammonia Sensing

open access: yesSmall, EarlyView.
One‐dimensional nickel phosphate nanofibres are transformed into two‐dimensional quasi‐nanosheets through a metal‐organic framework‐templated deconstruction‐reconstruction strategy. The hierarchical nanofibre‐assembled architecture provides rich mesoporosity, accessible adsorption sites, and rapid ammonia diffusion, enabling high‐performance QCM ...
Ping Cheng   +7 more
wiley   +1 more source

3D Reconstruction of Nanoparticle Distribution in Tumor Spheroids With Volume Electron Microscopy

open access: yesSmall, EarlyView.
Understanding where nanomaterials accumulate within cells is essential for revealing their biological fate and activity. We present a quantitative imaging framework to map nanomaterials and cellular structures in three dimensions. Applied to nanoparticle‐containing tumor spheroids, the approach reveals substantial cell‐to‐cell differences in uptake ...
Davide Bottone   +11 more
wiley   +1 more source

EFFICIENT ARCHITECTURES FOR IMPLEMENTING THE PRIME-FACTOR FOURIER TRANSFORM MODULES.

open access: yes, 1985
The author presents efficient architectures for implementing the discrete Fourier transform (DFT) and the discrete Hartley transform (DHART) based on prime factor decomposition. He uses the multiplierless distributed arithmetic in this architecture.
Kumaresan, R.
core   +1 more source

Unraveling the Mechanism for Phonon Based Heat Transport in Metal‐Organic Frameworks

open access: yesSmall, EarlyView.
Heat transport in metal‐organic frameworks arises from an interplay between particle‐like phonon propagation and wave‐like inter‐band coupling. Using machine‐learned potentials within a unified phonon‐transport framework based on the Wigner transport theory, we reveal how differences in phonon lifetimes and phonon tunneling effects determine the ...
Florian P. Lindner   +4 more
wiley   +1 more source

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