Coalescence of sessile polymeric fluid drops on a partially wettable substrate exhibits transition from inertial to viscoelastic regime at concentration ratio $c/c^* \sim 1$. Our findings unveil that the temporal evolution growing bridge height follows power-law behaviour $t^b$, such coefficient $b$ continuously decreases 2/3 in ($c/c^*<1$) an asymptotic value 1/2 visco-elastic ($c/c^*>1$). To ...

We revisit Mandel's notion that the degree of coherence equals the degree of indistinguishability by performing Hong-Ou-Mandel- (HOM-)type interferometry with single photons elastically scattered by a cw resonantly driven excitonic transition of an InAs/GaAs epitaxial quantum dot. We present a comprehensive study of the temporal profile of the photon coalescence phenomenon which shows that phot...

Stored emulsions undergo various destabilizing processes including creaming and coalescence of drops. Many experimental studies have been carried out in the past to quantify drop coalescence; however, the presence of two distinct types of coalescence mechanismssone due to the relative motion between the drops and the other due to their permanent proximity to each other in the creamshas not been...

In this study, the variability of spectral dispersion droplet size distributions (DSDs) in convective clouds is investigated. Analyses are based on aircraft measurements growing cumuli near Amazon basin, and numerical simulations an idealized ice-free cumulus. cleaner clouds, relative , defined as ratio standard deviation to mean value diameter, negatively correlated with cloud water content ()...

Reconstructing past population size from present day genetic data is a major goal of population genetics. Recent empirical studies infer population size history using coalescent-based models applied to a small number of individuals. Here we provide tight bounds on the amount of exact coalescence time data needed to recover the population size history of a single, panmictic population at a certa...

In this paper, the kinetics of the outflow in a microporous particle infiltrated by a nonwetting liquid is analyzed in context of effective phase transformation. The “dewetting” process is considered as the nucleation, growth, and coalescence of empty pore clusters (EPCs) that starts from the interior and eventually involves the whole particle. Initially, the EPC nucleation is dominant while th...

In bubble-laden flows with large local or global void fraction the distance between bubbles is small so that these interact with a certain probability. During interaction, the bubble can either bounce or undergo coalescence, depending on the nature of the interaction. Coalescence as well as bubble breakup alter the bubble size distribution and consequently change the dynamics of individual bubb...

In situ microscopy provides dynamic information about nucleation, growth and coalescence of islands in real time. We utilised in situ ultra-high vacuum transmission electron microscopy to gain fundamental insights into the oxidation of Cu films. A semiquantitative model, where oxygen surface diffusion is the dominant mechanism for transport, nucleation and growth of the copper oxide, describes ...

In this manuscript I describe a computer program that simulates the coalescent process and provides visual outputs of coalescent genealogies to the screen. CoalFace is a user-friendly program for teaching the principles of coalescence to both undergraduate and postgraduates in population genetics. In addition, CoalFace can generate data for distributions of the time to the most recent common an...