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Active matter consists of energy-consuming units, which self-propel, exert forces on their neighbours and act collectively, resulting in emergent non-equilibrium behaviour. This Review surveys computational models that describe a wide range of active systems, from synthetic microswimmers to animal herds.
Metadynamics is a technique to enhance the probability of observing rare events, such as chemical reactions and phase transitions, in molecular dynamics simulations. This Technical Review surveys the technique, addressing the critical issues that are met in practical applications.
Optical microscopy is limited to shallow in vivo imaging depths owing to the exponential extinction of single-scattered waves by multiple light scattering. In this Review, we survey methodologies for deep optical imaging that maintain microscopic resolution by making deterministic use of multiple-scattered waves.
Substantial progress has been made towards making fusion a source of commercial energy. One challenge is the damage that filamentary plasma eruptions cause to plasma-facing components. This Perspective summarizes what is understood about these eruptions and strategies for controlling them.
The integration of gate-defined quantum dots with superconducting resonators results in a hybrid architecture that holds promise for quantum information processing. This Review discusses recent experimental results in the field, including the achievement of strong coupling between single microwave photons and the charge and spin degrees of freedom, and examines the underlying physics.
Cosmological computer simulations of galaxy formation emerged as the primary tool to study structure formation in the Universe. This Technical Review describes the main techniques and ingredients of such simulations and their application to develop and constrain galaxy formation theories.
Cilia are hair-like organelles that enable cellular locomotion. This Review considers cilia from a dynamical systems perspective, discussing the nonlinear oscillations seen in the single cilia of microorganisms and the emergent topological phenomena seen in the ciliary arrays of animals.
Neutron spectroscopy is a powerful probe to study the dynamics in materials. This Technical Review assesses the state-of-the-art experimental spectroscopic methods, which are optimized to provide high energy resolution and can reveal dynamic processes on the picosecond and nanosecond timescales.
