Results 81 to 90 of about 239,273 (289)
Ultrafast Superradiant Scintillation from Isolated Weakly Confined Perovskite Nanocrystals
Advanced Materials, EarlyView.Efficiency and scintillation velocity are critical for high‐energy and medical physics. These parameters, typically conflicting in conventional scintillators, are simultaneously optimized by exploiting the giant oscillator strength of CsPbBr3 nanocrystals, leading to radiatively accelerated (multi)excitonic emission with unity efficiency without ...
Matteo L. Zaffalon +9 more
wiley +1 more source
Spectral characterization of the hydrogen like atoms confined by oscillating systems
, 2014 The spectral characterization of Coulomb systems confined by the homogeneous pseudo-Gaussian oscillator is investigated. This is made using the efficient computational method of generating functional.
Iacob, Felix
core +2 more sources
Advanced Materials Interfaces, EarlyView.By doping the elements with different numbers of valence electrons (Al3+ and Sn4+ ions) into the ZnO matrix, device conversion efficiencies of 8.69% and 9.21%, respectively, are achieved. The ultrafast time‐resolved studies show that the elevated carrier concentration in Sn‐doped ZnO, in comparison with Al‐doped ZnO and un‐doped ZnO, plays a ...
Anusha Puliparambil Thilakan +10 more
wiley +1 more source
, 2011 We derive the energy levels associated with the even-parity wave functions of the harmonic oscillator with an additional delta-function potential at the origin.
Peres, N. M. R., Viana-Gomes, J.
core +1 more source
Journal of King Saud University: Science, 2019 The use of white noise analysis is utilized in this study. We consider an open quantum system of coupled harmonic oscillator with uniform two dimensional electric field in a single harmonic oscillator environment. We obtain the quantum propagator for the
Norodin A. Rangaig +2 more
doaj
Classical Linear Harmonic Oscillators to Describe Thermodynamic Properties of Quantum Linear Harmonic Oscillators and Solids [PDF]
arXiv, 2019 As known all physical properties of solids are described well by the system of quantum linear harmonic oscillators. It is shown in the present paper that the system consisting of classical linear harmonic oscillators having temperature dependent masses or (and) frequencies has the same partition function as the system consisting of quantum linear ...
arxiv
A MEMS Electromagnetic Vibration Energy Harvester with Monolithically Integrated NdFeB Micromagnets
Advanced Materials Technologies, EarlyView.50µm thick sputtered arrays of NdFeB micromagnets are directly integrated into a functional MEMS in‐plane electromagnetic vibration energy harvester. A combination of analytical modeling and numerical simulations guided the design of the magnet arrays and ad‐hoc coil, to produce a high transduction factor.
Ilona Lecerf +13 more
wiley +1 more source
The Negative Dimensional Oscillator at Finite Temperature
, 1993 We study the thermal behavior of the negative dimensional harmonic oscillator of Dunne and Halliday that at zero temperature, due to a hidden BRST symmetry of the classical harmonic oscillator, is shown to be equivalent to the Grassmann oscillator of ...
Arvind N. Vaidya +19 more
core +1 more source
Harmonic oscillator: an analysis via Fourier series [PDF]
arXiv, 2013 The Fourier series method is used to solve the homogeneous equation governing the motion of the harmonic oscillator. It is shown that the general solution to the problem can be found in a surprisingly simple way for the case of the simple harmonic oscillator. It is also shown that the damped harmonic oscillator is susceptible to the analysis.
arxiv
PT-symmetric quantum oscillator in an optical cavity [PDF]
, 2016 The quantum harmonic oscillator with parity-time ($\mathcal{PT}$) symmetry, obtained from the ordinary (Hermitian) quantum harmonic oscillator by an imaginary displacement of the spatial coordinate, provides an important and exactly-solvable model to investigate non-Hermitian extension of the Ehrenfest theorem.
arxiv +1 more source