Hierarchical Equations of Motion Simulation of Temperature‐Dependent Two‐Dimensional Electronic Spectroscopy of the Chlorophyll a Manifold in LHCII

2020 ◽  
Vol 15 (13) ◽  
pp. 1996-2004
Author(s):  
Xuan Leng ◽  
Thanh Nhut Do ◽  
Parveen Akhtar ◽  
Hoang Long Nguyen ◽  
Petar H. Lambrev ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Equations Of Motion ◽  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Motion Simulation ◽  
Temperature Dependent

Studying the spectral diffusion dynamics of chlorophyll a and chlorophyll b using two-dimensional electronic spectroscopy

2019 ◽  
Vol 527 ◽  
pp. 110480 ◽  
Author(s):  
M. Faisal Khyasudeen ◽  
Paweł J. Nowakowski ◽  
Hoang Long Nguyen ◽  
Jamie H.N. Sim ◽  
Thanh Nhut Do ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Electronic Spectroscopy ◽  
Spectral Diffusion ◽  
Chlorophyll B ◽  
Two Dimensional ◽  
Diffusion Dynamics

Measuring the Spectral Diffusion of Chlorophyll a Using Two-Dimensional Electronic Spectroscopy

2013 ◽  
Vol 117 (8) ◽  
pp. 2294-2299 ◽  
Author(s):  
Kym L. Wells ◽  
Zhengyang Zhang ◽  
Jérémy R. Rouxel ◽  
Howe-Siang Tan
Keyword(s):  
Chlorophyll A ◽  
Electronic Spectroscopy ◽  
Spectral Diffusion ◽  
Two Dimensional

scholarly journals Two-dimensional electronic spectroscopy signatures of the glass transition

2010 ◽  
Vol 24 (3-4) ◽  
pp. 393-397 ◽  
Author(s):  
K. L .M. Lewis ◽  
J. A. Myers ◽  
F. Fuller ◽  
P. F. Tekavec ◽  
J. P. Ogilvie
Keyword(s):  
Glass Transition ◽  
Waiting Times ◽  
Electronic Spectroscopy ◽  
Excitation Frequency ◽  
Solvation Dynamics ◽  
Laser Dyes ◽  
Two Dimensional ◽  
Pulse Shaper ◽  
Temperature Dependent ◽  
Initial Excitation

Two-dimensional electronic spectroscopy is a sensitive probe of solvation dynamics. Using a pump–probe geometry with a pulse shaper [Optics Express15(2007), 16681-16689;Optics Express16(2008), 17420-17428], we present temperature dependent 2D spectra of laser dyes dissolved in glass-forming solvents. At low waiting times, the system has not yet relaxed, resulting in a spectrum that is elongated along the diagonal. At longer times, the system loses its memory of the initial excitation frequency, and the 2D spectrum rounds out. As the temperature is lowered, the time scale of this relaxation grows, and the elongation persists for longer waiting times. This can be measured in the ratio of the diagonal width to the anti-diagonal width; the behavior of this ratio is representative of the frequency–frequency correlation function [Optics Letters31(2006), 3354–3356]. Near the glass transition temperature, the relaxation behavior changes. Understanding this change is important for interpreting temperature-dependent dynamics of biological systems.

scholarly journals Consistent Model of Ultrafast Energy Transfer in Peridinin Chlorophyll-a Protein Using Two-Dimensional Electronic Spectroscopy and Förster Theory

2019 ◽  
Vol 123 (30) ◽  
pp. 6410-6420
Author(s):  
Zi S. D. Toa ◽  
Mary H. deGolian ◽  
Chanelle C. Jumper ◽  
Roger G. Hiller ◽  
Gregory D. Scholes
Keyword(s):  
Energy Transfer ◽  
Chlorophyll A ◽  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Consistent Model

Two-dimensional leaps in near-critical flow over isolated orography

2005 ◽  
Vol 461 (2064) ◽  
pp. 3747-3763 ◽  
Author(s):  
E.R Johnson ◽  
G.G Vilenski
Keyword(s):  
Unsteady Flow ◽  
Equations Of Motion ◽  
Fold Increase ◽  
Flow Speed ◽  
Two Dimensional ◽  
Subcritical Flow ◽  
One Dimensional ◽  
Petviashvili Equation ◽  
Lee Wave ◽  
Supercritical Flows

This paper describes steady two-dimensional disturbances forced on the interface of a two-layer fluid by flow over an isolated obstacle. The oncoming flow speed is close to the linear longwave speed and the layer densities, layer depths and obstacle height are chosen so that the equations of motion reduce to the forced two-dimensional Korteweg–de Vries equation with cubic nonlinearity, i.e. the forced extended Kadomtsev–Petviashvili equation. The distinctive feature noted here is the appearance in the far lee-wave wake behind obstacles in subcritical flow of a ‘table-top’ wave extending almost one-dimensionally for many obstacles widths across the flow. Numerical integrations show that the most important parameter determining whether this wave appears is the departure from criticality, with the wave appearing in slightly subcritical flows but being destroyed by two-dimensional effects behind even quite long ridges in even moderately subcritical flow. The wave appears after the flow has passed through a transition from subcritical to supercritical over the obstacle and its leading and trailing edges resemble dissipationless leaps standing in supercritical flow. Two-dimensional steady supercritical flows are related to one-dimensional unsteady flows with time in the unsteady flow associated with a slow cross-stream variable in the two-dimensional flows. Thus the wide cross-stream extent of the table-top wave appears to derive from the combination of its occurrence in a supercritical region embedded in the subcritical flow and the propagation without change of form of table-top waves in one-dimensional unsteady flow. The table-top wave here is associated with a resonant steepening of the transition above the obstacle and a consequent twelve-fold increase in drag. Remarkably, the table-top wave is generated equally strongly and extends laterally equally as far behind an axisymmetric obstacle as behind a ridge and so leads to subcritical flows differing significantly from linear predictions.

EQUIVALENCE OF TWO-DIMENSIONAL GRAVITIES

1990 ◽  
Vol 05 (16) ◽  
pp. 1251-1258 ◽  
Author(s):  
NOUREDDINE MOHAMMEDI
Keyword(s):  
Gauge Theory ◽  
Explicit Solution ◽  
Light Cone ◽  
Equations Of Motion ◽  
Two Dimensional ◽  
Induced Gravity ◽  
Light Cone Gauge ◽  
Dimensional Gravity ◽  
The Relationship ◽  
Chern Simons

We find the relationship between the Jackiw-Teitelboim model of two-dimensional gravity and the SL (2, R) induced gravity. These are shown to be related to a two-dimensional gauge theory obtained by dimensionally reducing the Chern-Simons action of the 2+1 dimensional gravity. We present an explicit solution to the equations of motion of the auxiliary field of the Jackiw-Teitelboim model in the light-cone gauge. A renormalization of the cosmological constant is also given.

scholarly journals Exploring size and state dynamics in CdSe quantum dots using two-dimensional electronic spectroscopy

2014 ◽  
Vol 140 (8) ◽  
pp. 084701 ◽  
Author(s):  
Justin R. Caram ◽  
Haibin Zheng ◽  
Peter D. Dahlberg ◽  
Brian S. Rolczynski ◽  
Graham B. Griffin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electronic Spectroscopy ◽  
Cdse Quantum Dots ◽  
Two Dimensional
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