Results 141 to 150 of about 180,189 (322)

Ultrafast Exciton and Spin Dynamics of Monolayer MoSi2N4 Studied by Non‐Degenerate Pump‐Probe Transient Transmission Spectroscopy

Advanced Science, EarlyView.
The resonant energy of the A and B exciton of the new 2D material, monolayer MoSi2N4, is found to be 2.18 and 2.34 eV, respectively, indicating a spin‐splitting energy of ≈160 meV. Complex and diverse exciton dynamics are observed. The work has a profound influence on the future developments of MoSi2N4‐based optoelectronic devices and the synthesis of ...
Huiping Wu, Su Sun, Chuan Xu, Ke Chen, Wencai Ren, Tianshu Lai   +5 more
wiley   +1 more source

Completely and logarithmically completely monotone functions

We give simpler proof of known theorems, extend the validity of them, generalize them, correct some erroneous results, and prove some new results.
openaire   +2 more sources

Completely monotone functions and the Wallis ratio

Applied Mathematics Letters, 2012
AbstractThe aim of the paper is to improve known estimates of the Wallis ratio. Moreover, we show that these improvements are valid, because certain functions involving the continuous version of the Wallis ratio are completely monotone.
openaire   +2 more sources

Tunable Polariton Rabi Oscillation in Phase‐Changing Perovskite Microcavities

Advanced Science, EarlyView.
This work demonstrated the tunable Rabi oscillation of exciton‐polaritons in MAPbBr3 perovskites due to the emergence of ferroelectricity during the crystallographic phase transition. Both the Rabi oscillation and exciton oscillator strength exhibit an unusual temperature dependence that is related to the emergence of ferroelectricity in the tetragonal
Hyeon‐Seo Choi, Minjee Ko, Taejin Lee, Jin‐Woo Jung, Young‐Jun Lee, Hyeonjong Jeong, Youngjae Kim, Dongha Kim, Jinhee Heo, Shinbuhm Lee, JaeDong Lee, Chang‐Hee Cho   +11 more
wiley   +1 more source

Enhanced Broadband Acoustic Absorption in Commercial Foam via Multiwall Carbon Nanotube‐Induced Pore Reconstruction

Advanced Science, EarlyView.
A simple to multiscale structure transition happens when a commercial porous foam is filled with multiwall carbon nanotubes with high aspect ratio. For an acoustic absorber with a porous material, the loading of multiwall carbon nanotubes can significantly improve its specific surface area while preserving its thickness and high porosity, thus enables ...
Jinkui Xiong, Jinlong Liu, Wengui Lin, Yifei Li, Longchao Liao, Mingfu Wen, Guisheng Zhong, Xiaodong Niu, Longshi Rao, Quan Wang, Bin Bao, Qingxian Liu   +11 more
wiley   +1 more source

An Electrolyte‐Gated InGaZnO Phototransistor that Emulates Visual Experience‐Dependent Plasticity

Advanced Electronic Materials, EarlyView.
By utilizing the light‐history‐dependent property of the IGZO electrolyte‐gated transistor, Bienenstock‐Cooper‐Munro (BCM) learning rule is successfully emulated. Moreover, the BCM learning rule enables a variety of bionic vision functions including image edge detection and associative memory, which offers a promising route for simulating high‐order ...
Zheng Wang, Mingzhen Zhang, Donggang Xie, Zhuohui Liu, Ge Li, Jiahui Xie, Erjia Guo, Meng He, Can Wang, Guozhen Yang, Kuijuan Jin, Chen Ge   +11 more
wiley   +1 more source

A Look at Generalized Trigonometric Functions as Functions of Their Two Parameters and Further New Properties

Mathematics
Investigation of the generalized trigonometric and hyperbolic functions containing two parameters has been a very active research area over the last decade.
Dmitrii Karp, Elena Prilepkina
doaj   +1 more source

Fast and Furious: A study on Monotonicity and Speed in Cops-and-Robber Games [PDF]

arXiv
In this paper, we study different variants of the Cops-and-Robber game with respect to cop- and robber\-/monotonicity. We study a visible and invisible robber and variants where the robber is lazy, thus can only move when the cops announce to move on top of him.
arxiv  

Computational Microscopy of Spatial Dopant Distribution in Conjugated Polymer

Advanced Electronic Materials, EarlyView.
The study employed molecular dynamics simulations to investigate the distribution of dopants in conjugated polymers. The simulations revealed that dopants are randomly distributed without forming clusters, contrasting with experimental findings of dopant clustering.
Joshua Wheeler, Igor Zozoulenko
wiley   +1 more source

Logarithmically complete monotonicity and Shur-convexity for some ratios of gamma functions

, 2006
Ai‐Jun Li, Zhao Wei-Zhen, Chao-Ping Chen   +2 more
openalex   +2 more sources