4.6 Article

Spectroscopic characterization of rare events in colloidal particle stochastic thermodynamics

期刊

FRONTIERS IN CHEMISTRY
卷 10, 期 -, 页码 -

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2022.879524

关键词

stochastic thermodynamics; spectroscopy; rare events; Langevin; lanthanides

资金

  1. CNPq INCT Catalysis [444061/20185]
  2. FAPESP [2019/27471-0, 2013/07276-1, 2020/10541-2, 2020/10518-0]

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In this study, we use stochastic dynamics and nonlinear optical simulations to investigate the non-equilibrium trajectories of individual Yb (III):Er (III) colloidal particles driven by two-dimensional dynamic optical traps. We also analyze the effects of fluctuations at the single-particle level by examining position trajectories and time-dependent upconversion emission intensities.
Given the remarkable developments in synthetic control over chemical and physical properties of colloidal particles, it is interesting to see how stochastic thermodynamics studies may be performed with new, surrogate, or hybrid model systems. In the present work, we apply stochastic dynamics and nonlinear optical light-matter interaction simulations to study nonequilibrium trajectories of individual Yb (III):Er (III) colloidal particles driven by two-dimensional dynamic optical traps. In addition, we characterize the role of fluctuations at the single-particle level by analyzing position trajectories and time-dependent upconversion emission intensities. By integrating these two complementary perspectives, we show how the methods developed here can be used to characterize rare events.

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