Results 91 to 100 of about 162,690 (325)

Curcuminoid Derivatives with a Donor‐Acceptor‐Donor Architecture: an Outstanding Platform for Highly‐Efficient Near‐Infrared Electroluminescence and Amplified Spontaneous Emission

open access: yesAdvanced Optical Materials, EarlyView.
Curcuminoid boron difluoride dyes containing triphenylamine units are prepared and their photophysical and electrochemical properties are investigated. These new light‐emitting dyes are used in organic light‐emitting diodes (OLEDs) emitting at 800 nm with 1% external quantum efficiency, and show low threshold amplified spontaneous emission in thin ...
Anthony D'Aléo   +11 more
wiley   +1 more source

Deformed Heisenberg algebras, a Fock-space representation and the Calogero model

open access: yes, 2000
We describe generally deformed Heisenberg algebras in one dimension. The condition for a generalized Leibniz rule is obtained and solved. We analyze conditions under which deformed quantum-mechanical problems have a Fock-space representation.
Bardek, Velimir, Meljanac, Stjepan
core   +1 more source

Excitation‐Wavelength‐Tunable Lasing in Individual Quantum Dot Superparticles

open access: yesAdvanced Optical Materials, EarlyView.
Mesoscale superparticles assembled from CdSe quantum dots are shown to behave as microlasers with emission properties that can be tuned by changing the excitation wavelength. Abstract Microcavities enable precise control over light‐matter interactions, supporting a wide range of applications in photonics and optoelectronics.
Marco Reale   +5 more
wiley   +1 more source

Non-KAM classical chaos topology for electrons in superlattice minibands determines the inter-well quantum transition rates

open access: yesScientific Reports
We investigate the quantum-classical correspondence for a particle tunnelling through a periodic superlattice structure with an applied bias voltage and an additional tilted harmonic oscillator potential.
F. Wang   +3 more
doaj   +1 more source

Subnormality in the Quantum Harmonic Oscillator

open access: yesCommunications in Mathematical Physics, 2000
This is an invitation to enjoy watching how unbounded subnormality, a rather recent development, gets involved in solving the commutation relation of the quantum harmonic oscillator.
openaire   +3 more sources

Quantum SU(2,2)-harmonic oscillator [PDF]

open access: yesReports on Mathematical Physics, 1993
10 pages, LaTex ...
openaire   +4 more sources

Instanton solutions on the polymer harmonic oscillator

open access: yes, 2016
It is computed, using instanton methods, the first allowed energy band for the polymer harmonic oscillator. The result is consistent with the band structure of the standard quantum pendulum but with pure point spectrum.
Garcia-Chung, Angel   +2 more
core   +1 more source

Thermally Activated Delayed Fluorescence and Beyond. Photophysics and Material Design Strategies.

open access: yesAdvanced Photonics Research, EarlyView.
Photophysical properties of TADF molecules are determined by characteristic parameters that are discussed in detail(. Moreover, using femtosecond time‐resolved spectroscopy, quantum mechanical considerations, and state‐of‐art calculations, deeper understanding allows us to design breakthrough Cu(I) and organic TADF‐ OLED materials. For the latter ones,
Hartmut Yersin, Uwe Monkowius
wiley   +1 more source

Quantum kicked harmonic oscillator in contact with a heat bath [PDF]

open access: yes, 2016
We consider the quantum harmonic oscillator in contact with a finite temperature bath, modelled by the Caldeira-Leggett master equation. Applying periodic kicks to the oscillator, we study the system in different dynamical regimes between classical ...
M. Prado, P. C. L. V'azquez, T. Gorin
semanticscholar   +1 more source

Quantum harmonic oscillators and thermalization

open access: yes, 2021
We study a quantum harmonic oscillator undergoing thermalization. To describe the thermalization process, we generalize the Ermakov-Lewis-Riesenfeld (ELR) invariant method for the oscillator. After imposing appropriate conditions on the thermalization process, we introduce an ansatz equation that describes the time evolution effectively.
Kim, Hyeong-Chan, Lee, Youngone
openaire   +2 more sources

Home - About - Disclaimer - Privacy