scholarly journals Synthesis of crystalline metal nanomonoliths by e-beam reduction of negatively electrified jets

2018 ◽  
Vol 5 ◽  
pp. 87-92 ◽  
Author(s):  
J.S. Fisher ◽  
P.A. Kottke ◽  
A.G. Fedorov
Keyword(s):  
Electrified Jets ◽  
Crystalline Metal

scholarly journals Exciton Coupling and Conformational Changes Impacting the Excited State Properties of Metal Organic Frameworks

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4230
Author(s):  
Andreas Windischbacher ◽  
Luca Steiner ◽  
Ritesh Haldar ◽  
Christof Wöll ◽  
Egbert Zojer ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Red Shift ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Exciton Coupling ◽  
Metal Organic ◽  
Crystalline Metal

In recent years, the photophysical properties of crystalline metal-organic frameworks (MOFs) have become increasingly relevant for their potential application in light-emitting devices, photovoltaics, nonlinear optics and sensing. The availability of high-quality experimental data for such systems makes them ideally suited for a validation of quantum mechanical simulations, aiming at an in-depth atomistic understanding of photophysical phenomena. Here we present a computational DFT study of the absorption and emission characteristics of a Zn-based surface-anchored metal-organic framework (Zn-SURMOF-2) containing anthracenedibenzoic acid (ADB) as linker. Combining band-structure and cluster-based simulations on ADB chromophores in various conformations and aggregation states, we are able to provide a detailed explanation of the experimentally observed photophysical properties of Zn-ADB SURMOF-2: The unexpected (weak) red-shift of the absorption maxima upon incorporating ADB chromophores into SURMOF-2 can be explained by a combination of excitonic coupling effects with conformational changes of the chromophores already in their ground state. As far as the unusually large red-shift of the emission of Zn-ADB SURMOF-2 is concerned, based on our simulations, we attribute it to a modification of the exciton coupling compared to conventional H-aggregates, which results from a relative slip of the centers of neighboring chromophores upon incorporation in Zn-ADB SURMOF-2.

Bacterial adhesion on amorphous and crystalline metal oxide coatings

2015 ◽  
Vol 57 ◽  
pp. 88-99 ◽  
Author(s):  
Argelia Almaguer-Flores ◽  
Phaedra Silva-Bermudez ◽  
Rey Galicia ◽  
Sandra E. Rodil
Keyword(s):  
Metal Oxide ◽  
Bacterial Adhesion ◽  
Oxide Coatings ◽  
Crystalline Metal ◽  
Metal Oxide Coatings

Low-Temperature Liquid Precursors of Crystalline Metal Oxides Assisted by Heterogeneous Photocatalysis

2015 ◽  
Vol 27 (16) ◽  
pp. 2608-2613 ◽  
Author(s):  
Iñigo Bretos ◽  
Ricardo Jiménez ◽  
Dulce Pérez-Mezcua ◽  
Norberto Salazar ◽  
Jesús Ricote ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Heterogeneous Photocatalysis ◽  
Liquid Precursors ◽  
Temperature Liquid ◽  
Crystalline Metal

scholarly journals Innenrücktitelbild: Electrical Network of Single-Crystalline Metal Oxide Nanoclusters Wired by π-Molecules (Angew. Chem. 42/2014)

2014 ◽  
Vol 126 (42) ◽  
pp. 11565-11565
Author(s):  
Ryo Tsunashima ◽  
Yoshifumi Iwamoto ◽  
Yusuke Baba ◽  
Chisato Kato ◽  
Katsuya Ichihashi ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Electrical Network ◽  
Single Crystalline ◽  
Crystalline Metal

PECULIAR PROPERTIES OF ELECTROMAGNETIC RADIATION PROPAGATION IN PHOTONIC CRYSTALLINE METAL-DIELECTRIC SYSTEMS BASED ON OPALS

2021 ◽  
pp. 89-99
Author(s):  
S. D. Khanin ◽  
A. I. Vanin ◽  
Yu. A. Kumzerov ◽  
V. G. Solovyev ◽  
A. V. Cvetkov ◽  
...  
Keyword(s):  
Electromagnetic Waves ◽  
Bragg Diffraction ◽  
Opal Matrix ◽  
Spectral Curves ◽  
Absorption Of Light ◽  
Anomalous Transmission ◽  
Asymmetric Form ◽  
Transmission And Absorption ◽  
Crystalline Metal ◽  
Plasmon Polaritons

The article studies the propagation of electromagnetic waves in metal-dielectric systems based on opals. We revealed anomalous transmission and absorption of light by hybrid plasmon- photonic layered heterostructures associated with the excitation of surface plasmon polaritons propagating along the metal-dielectric interface. The position of maxima in the reflection spectra of nanocomposites, obtained by filling the opal matrix with metal by the electrothermodiffusion method, is explained by the Bragg diffraction, and the asymmetric form of the spectral curves is attributed to the Fano resonance.

A Law of Work-Hardening

1948 ◽  
Vol 15 (3) ◽  
pp. 265-273
Author(s):  
A. M. Freudenthal ◽  
M. Reiner
Keyword(s):  
Mild Steel ◽  
Work Hardening ◽  
Wire Drawing ◽  
Total Work ◽  
Exponential Functions ◽  
Recoverable Strain ◽  
Annealed State ◽  
Logarithmic Measure ◽  
Work Of Deformation ◽  
Crystalline Metal

Abstract Based on the “blocking” theory of the strength of a poly-crystalline metal, a law of work-hardening is derived and checked experimentally on mild steel deformed by wire-drawing up to a deformation of 4.6 in the logarithmic measure. The law correlates the recoverable strain work with the total work of deformation in a series of exponential functions, the number of which corresponds to the number of sizes of crystal grains present in the annealed state.

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