Max Planck Institute for Dynamics and Self-Organization

Airborne measurements of turbulence and cloud microphysics during PaCE 2022 using the Advanced Max Planck CloudKite Instrument (MPCK + )

Abstract. This paper presents the data set collected with the Advanced Max Planck CloudKite instrument (MPCK+) during the Pallas Cloud Experiment (PaCE), conducted at Pallas, Finland, between September 19 and September 26, 2022. The data set includes measurements of turbulence, w...

The extraction of work from hidden degrees of freedom

Abstract Thermodynamics establishes that information acquired through measurement can be converted into work, as exemplified by Maxwell’s demon and Szilard engines. Most experimental realizations of information engines, however, implicitly assume Markovian environments, in which...

Disentangling interaction and bias effects in opinion dynamics of large language models

Abstract Large Language Models are increasingly used to simulate human opinion dynamics, yet the effect of genuine interaction is often obscured by systematic biases. We develop a Bayesian framework to disentangle and quantify three such biases: (i) A topic bias toward the LLM’s...

Symmetry breaking in evaporating droplet and formation of flower-like pattern

Abstract When a droplet evaporates, the components dissolved within it can deposit in patterns that reflect the underlying fluid dynamics. We report the formation of a flower-like deposition pattern of micrometer-sized particles from an evaporating droplet containing salt and pol...

Evaluating the classification performance and data requirements of Catch22 features on noisy and short synthetic time series

Abstract This study evaluates the performance, data requirements, and computational efficiency of the feature extraction tool Catch22 for time-series classification. Using synthetic sinusoidal signals and nonlinear signals generated with the FitzHugh-Nagumo (FHN) model, we system...

Multiplexed gene expression analysis in dissociated and intact planarian flatworm tissues using in situ hybridization chain reaction

Planarians are an important model system for studying whole-body regeneration. The visualization of gene expression patterns during this process is an essential experimental technique to understand the underlying mechanisms. Multi-colour fluorescent in situ hybridization (FISH) i...

Bulldozing an immersed granular material in a confined channel

The motion of an immersed granular material in a channel is characterised by complex interactions among the grains, between the grains and the permeating liquid, and between the grains and the channel walls. Here, we develop a reduced-order continuum model for the bulldozing of a...

Highly localized droplet clustering in shallow cumulus clouds

The size and spatial clustering of water droplets in warm clouds influence cloud evolution and radiation properties and thus are of fundamental importance for the Earth’s energy balance and water cycle. Some proposed mechanisms for droplet growth and precipitation initiation in w...