9 documents found

Article / Chapter
CC BY 4.0
2020-07-16

Hydrogen-nitrogen plasma assisted synthesis of titanium dioxide with enhanced...

Sodium ion batteries are considered as one of the most promising energy storage devices as lithium ion batteries due to the natural abundance of sodium. TiO2 is very popular as anode materials for both lithium and sodium ion batteries because of the nontoxicity, safety and great stabilities. However,...
London: Macmillan Publishers Limited, part of Springer Nature, 2020-07-16
Article / Chapter
CC BY 4.0
2020-03-19

Nonlinear plasmon-exciton coupling enhances sum-frequency generation from...

The integration of metallic plasmonic nanoantennas with quantum emitters can dramatically enhance coherent harmonic generation, often resulting from the coupling of fundamental plasmonic fields to higher-energy, electronic or excitonic transitions of quantum emitters. The ultrafast optical dynamics of...
London: Nature Publishing Group UK, 2020-03-19
Dissertation
All rights reserved
2019-04-18

Wasserverunreinigungen in Lithium-Ionen-Batterien

Lithium-Ionen Batterien (LIB) verwenden organische Elektrolyte, die auch bei hohen Spannungen von über 4 V stabil sind. Das Leitsalz, das für die meisten Elektrolyten genutzt wird, ist LiPF6. Dieses hat eine Reihe an positiven Eigenschaften, wie eine hohe Leitfähigkeit und chemische Stabilität, ist aber...
Dissertation
All rights reserved
2018-12-06

Implementierung und Parametrierung eines physikalischen Simulationsmodells...

Die Interkalationsreaktion von Lithium (Li) in Li-Ionen Batterien ist häufig mit signifikanten Volumenänderungen der Aktivmaterialien verbunden. Zusätzlich kommt es über die Lebensdauer zu einer irreversiblen mechanischen Ausdehnung, die u.a. durch die Reaktion von Elektrolytkomponenten an der Elektrodenoberfläche...
Article / Chapter
CC BY 4.0
2018-08-22

Observing charge separation in nanoantennas via ultrafast point-projection...

aus: Light
Observing the motion of electrons on their natural nanometer length and femtosecond time scales is a fundamental goal of and an open challenge for contemporary ultrafast science. At present, optical techniques and electron microscopy mostly provide either ultrahigh temporal or spatial resolution, and...
London: Nature Publishing Grou, 2018-08-22
Article / Chapter
CC BY 4.0
2018-04-20

Plasmonic nanosponges

Gold nanosponges, or nanoporous gold nanoparticles, possess a percolated nanoporous structure over the entire nanoparticles. The optical and plasmonic properties of gold nanosponges and its related hybrid nanosponges are very fascinating due to the unique structural feature, and are controllable and...
Ilmenau: ilmedia, 2018-04-20
Article / Chapter
CC BY-NC-ND 4.0
2017-05-03

Long-lived electron emission reveals localized plasmon modes in disordered...

aus: Light
We report long-lived, highly spatially localized plasmon states on the surface of nanoporous gold nanoparticles-nanosponges-with high excitation efficiency. It is well known that disorder on the nanometer scale, particularly in two-dimensional systems, can lead to plasmon localization and large field...
London: Nature Publishing Grou, 2017-05-03
Article / Chapter
All rights reserved
2012-09-13

Ordered arrays of nanoporous gold nanoparticles

A combination of a “top-down” approach (substrate-conformal imprint lithography) and two “bottom-up” approaches (dewetting and dealloying) enables fabrication of perfectly ordered 2-dimensional arrays of nanoporous gold nanoparticles. The dewetting of Au/Ag bilayers on the periodically prepatterned...
Frankfurt, M.: Beilstein-Institut zur Förderung der Chemischen Wissenschaften, 2012-09-13
Article / Chapter
All rights reserved
2011-06-22

Formation of precise 2D Au particle arrays via thermally induced dewetting...

The fabrication of precise 2D Au nanoparticle arrays over a large area is presented. The technique was based on pre-patterning of the substrate before the deposition of a thin Au film, and the creation of periodic particle arrays by subsequent dewetting induced by annealing. Two types of pre-patterned...
Frankfurt, M.: Beilstein-Institut zur Förderung der Chemischen Wissenschaften, 2011-06-22