We present a novel experimental approach which allows extraction of both spatial and temporal information on charge dynamics in organic solar cells. Using the wavelength dependence of the photonic structure in these devices, we monitor the change in spatial overlap between the photogenerated hole distribution and the optical probe profile as a function of time. In a model system we find evidenc...

in Monkey Lateral Intraparietal Area Neurons 6 7 8 9 Joonkoo Park and Jun Zhang 10 11 Department of Psychology 12 University of Michigan 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Corresponding author: 30 31 Jun Zhang ([email protected]) 32 Department of Psychology, University of Michigan 33 530 Church St., Ann Arbor, Michigan 48109 34 35 36

The construction of a model of the gravitational-wave (GW) signal from generic configurations of spinning-black-hole binaries, through inspiral, merger, and ringdown, is one of the most pressing theoretical problems in the buildup to the era of GW astronomy. We present the first such model in the frequency domain, PhenomP, which captures the basic phenomenology of the seven-dimensional paramete...

The contact process is used as a simple spatial model in many disciplines, yet because of the buildup of spatial correlations, its dynamics remain difficult to capture analytically. We introduce an empirically based, approximate method of characterizing the spatial correlations with only a single adjustable parameter. This approximation allows us to recast the contact process in terms of a stoc...

The buildup process of coherent structures and patterns from the composite balance between conservative dissipative effects is a universal phenomenon that occurs in various areas physics, ranging quantum mechanics to astrophysics. Dissipative solitons are highly solutions nonlinear wave equations, provide an excellent research platform for ultrafast transient phenomena. Herein, by taking advant...

Organisms interact with each other mostly over local scales, so the local density experienced by an individual is of greater importance than the mean density in a population. This simple observation poses a tremendous challenge to theoretical ecology, and because nonlinear stochastic and spatial models cannot be solved exactly, much effort has been spent in seeking effective approximations. Sev...