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Active Particles in Complex and Crowded Environments
Differently from passive Brownian particles, active particles, also known as self-propelled Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy from their…
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Unidirectional Emission of a Quantum Dot Coupled to a Nanoantenna
TLDR
An optical antenna is designed, a shrunk-down version of the Yagi-Uda design used in microwave and radio communication, and it is shown that coupling the quantum dot to the antenna provides control over the direction of the emitted light.
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Simulation of a Brownian particle in an optical trap
An optically trapped Brownian particle is a sensitive probe of molecular and nanoscopic forces. An understanding of its motion, which is caused by the interplay of random and deterministic…
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Simulation of the active Brownian motion of a microswimmer
Unlike passive Brownian particles, active Brownian particles, also known as microswimmers, propel themselves with directed motion and thus drive themselves out of equilibrium. Understanding their…
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High-performance reconstruction of microscopic force fields from Brownian trajectories
TLDR
A fast and parameter-free method that can characterize both the conservative and non-conservative force fields acting on Brownian particles, and can accelerate the development of microscopic and nanoscopic force transducers for physics, biology and engineering.
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Active Brownian motion tunable by light
TLDR
It is shown that the illumination-borne heating induces a local asymmetric demixing of the binary mixture, generating a spatial chemical concentration gradient which is responsible for the particle's self-diffusiophoretic motion.
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Brownian Motion in a Speckle Light Field: Tunable Anomalous Diffusion and Selective Optical Manipulation
TLDR
It is shown how speckle light fields can be used to control the anomalous diffusion of a Brownian particle and to perform some basic optical manipulation tasks such as guiding and sorting.
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Enhancing the nonlinear optical response using multifrequency gold-nanowire antennas.
TLDR
By employing antenna elements with different spectral resonances, this work provides a strategy to decouple the nonlinear response of nanomaterials from their linear optical properties.
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Chemotactic synthetic vesicles: Design and applications in blood-brain barrier crossing
TLDR
It is demonstrated that the chemotactic behavior of these nanoswimmers, in combination with LRP-1 (low-density lipoprotein receptor–related protein 1) targeting, enables a fourfold increase in penetration to the brain compared to nonchemotactic systems.
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Dynamic Control of Particle Deposition in Evaporating Droplets by an External Point Source of Vapor
TLDR
Deterministic emergence and real-time control of Marangoni flows within the evaporating droplet by an external point source of vapor are demonstrated and modulated to pattern colloids on surfaces in a controllable manner.
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