scholarly journals Publisher's Note: “Role of dark exciton states in the relaxation dynamics of bright 1s excitons in monolayer WSe2” [Appl. Phys. Lett. 119, 093101 (2021)]

2021 ◽  
Vol 119 (14) ◽  
pp. 149901
Author(s):  
Satoshi Kusaba ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
Kazuhiro Yanagi ◽  
Koichiro Tanaka
Keyword(s):  
Relaxation Dynamics ◽  
Dark Exciton

Role of dark exciton states in the relaxation dynamics of bright 1s excitons in monolayer WSe2

2021 ◽  
Vol 119 (9) ◽  
pp. 093101
Author(s):  
Satoshi Kusaba ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
Kazuhiro Yanagi ◽  
Koichiro Tanaka
Keyword(s):  
Relaxation Dynamics ◽  
Dark Exciton

Role of Skeletal and O–H Vibrational Motions in the Ultrafast Excited-State Relaxation Dynamics of Alizarin

2020 ◽  
Vol 124 (52) ◽  
pp. 10989-10996
Author(s):  
Probal Nag ◽  
Sivaranjana Reddy Vennapusa
Keyword(s):  
Excited State ◽  
Relaxation Dynamics

scholarly journals Ionic conductivity of deep eutectic solvents: the role of orientational dynamics and glassy freezing

2019 ◽  
Vol 21 (13) ◽  
pp. 6801-6809 ◽  
Author(s):  
Daniel Reuter ◽  
Catharina Binder ◽  
Peter Lunkenheimer ◽  
Alois Loidl
Keyword(s):  
Ionic Conductivity ◽  
Dielectric Spectroscopy ◽  
Deep Eutectic Solvents ◽  
Relaxation Dynamics ◽  
Dipolar Relaxation ◽  
Orientational Dynamics

Dielectric spectroscopy reveals that the ionic conductivity of deep eutectic solvents is closely coupled to their reorientational dipolar relaxation dynamics.

The Role of Deep Defect Relaxation Dynamics in Optical Processes in Hydrogenated Amorphous Silicon

1995 ◽  
Vol 377 ◽  
Author(s):  
Fan Zhong ◽  
J. David Cohen
Keyword(s):  
Relaxation Dynamics ◽  
Energy Position ◽  
Defect Band ◽  
Transient Photoconductivity ◽  
Photoconductivity Decay ◽  
Long Time ◽  
Intimate Relation ◽  
Hydrogenated Amorphous ◽  
Defect Relaxation

ABSTRACTWe report results of a transient modulated photocurrent technique which allows us to observe the time evolution of the D0 sub-band under the application of optical bias light and after turning off this bias light Our measurements show that the D0 band shifts monotonically to shallower thermal energies after the bias light is applied, with roughly 10 seconds to saturation at 300K and to deeper thermal energies after removing the bias light, with a decay time of over 1000 seconds. We have also found there exists an intimate relation between the motion of the D0 band and that of the quasi Fermi level as deduced from the transient photoconductivity and therefore, in particular, to the long time photoconductivity decay. This relation is exactly reproduced by the assumption of a D0 band whose energy position evolves in time, together with a recombination process dominated by changes in the charge state of a deeper defect band under light bias.

The role of amplified spontaneous emission in the ultrafast relaxation dynamics of polymer films

1998 ◽  
Vol 289 (1-2) ◽  
pp. 205-210 ◽  
Author(s):  
S. Stagira ◽  
M. Nisoli ◽  
G. Cerullo ◽  
M. Zavelani–Rossi ◽  
S. De Silvestri ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Polymer Films ◽  
Amplified Spontaneous Emission ◽  
Relaxation Dynamics ◽  
Ultrafast Relaxation

The role of CN and CO ligands in the vibrational relaxation dynamics of model compounds of the [FeFe]-hydrogenase enzyme

2011 ◽  
Vol 13 (21) ◽  
pp. 10295 ◽  
Author(s):  
Spyridon Kaziannis ◽  
Joseph A. Wright ◽  
Marco Candelaresi ◽  
Rafal Kania ◽  
Gregory M. Greetham ◽  
...  
Keyword(s):  
Vibrational Relaxation ◽  
Relaxation Dynamics ◽  
Model Compounds ◽  
Hydrogenase Enzyme

Relaxation dynamics of simple glass-formers: The role of timescale separation and activated dynamics at the metabasin level

2005 ◽  
Vol 2 (10) ◽  
pp. 3532-3535 ◽  
Author(s):  
G. A. Appignanesi ◽  
J. A. Rodriguez Fris ◽  
L. M. Alarcón ◽  
M. A. Frechero ◽  
R. A. Montani
Keyword(s):  
Relaxation Dynamics

scholarly journals Essential role of papillae flexibility in nectar capture by bees

2021 ◽  
Vol 118 (19) ◽  
pp. e2025513118
Author(s):  
Amandine Lechantre ◽  
Ayrton Draux ◽  
Hoa-Ai Béatrice Hua ◽  
Denis Michez ◽  
Pascal Damman ◽  
...  
Keyword(s):  
Viscous Dissipation ◽  
Bombus Terrestris ◽  
Ingestion Rate ◽  
Sugar Content ◽  
Primary Source ◽  
Relaxation Dynamics ◽  
Elastic Recoil ◽  
Dipping Process

Many bees possess a tongue resembling a brush composed of a central rod (glossa) covered by elongated papillae, which is dipped periodically into nectar to collect this primary source of energy. In vivo measurements show that the amount of nectar collected per lap remains essentially constant for sugar concentrations lower than 50% but drops significantly for a concentration around 70%. To understand this variation of the ingestion rate with the sugar content of nectar, we investigate the dynamics of fluid capture by Bombus terrestris as a model system. During the dipping process, the papillae, which initially adhere to the glossa, unfold when immersed in the nectar. Combining in vivo investigations, macroscopic experiments with flexible rods, and an elastoviscous theoretical model, we show that the capture mechanism is governed by the relaxation dynamics of the bent papillae, driven by their elastic recoil slowed down through viscous dissipation. At low sugar concentrations, the papillae completely open before the tongue retracts out of nectar and thus, fully contribute to the fluid capture. In contrast, at larger concentrations corresponding to the drop of the ingestion rate, the viscous dissipation strongly hinders the papillae opening, reducing considerably the amount of nectar captured. This study shows the crucial role of flexible papillae, whose aspect ratio determines the optimal nectar concentration, to understand quantitatively the capture of nectar by bees and how physics can shed some light on the degree of adaptation of a specific morphological trait.

scholarly journals Phase Space Analysis of Relaxation Dynamics of Isoscalar Giant Monopole Resonances

2019 ◽  
Vol 14 ◽  
pp. 131
Author(s):  
P. K. Papachristou ◽  
E. Mavrommatis ◽  
V. Constantoudis ◽  
F. Κ. Diakonos ◽  
J. Wambach
Keyword(s):  
Phase Space ◽  
Collective Excitation ◽  
Classical Model ◽  
Space Structures ◽  
Relaxation Dynamics ◽  
Nuclear Dynamics ◽  
Independent Particle ◽  
The Common ◽  
Broad Region

A classical model based on the independent particle approach to the nuclear dynamics is used to study the influence of the phase space structures on the onebody dissipation of isoscalar Giant Monopole Resonances. The model consists of a harmonic oscillator describing the collective excitation coupled with a nonlinear (Woods-Saxon) oscillator representing the motion of each nucléon. We are particulary interested in the dependence of relaxation on the energy of the system. We have found that in a rather broad region of parameter space, contrary to the common expectation, both Lyapunov exponent and relaxation time increase as a function of the total energy. We examine the conditions required for this effect to occur and demonstrate the key role of the dispersion relation of the nonlinear oscillator.

Sign in / Sign up

Export Citation Format

Share Document