Tracking Surface Charge Dynamics on Single Nanoparticles
Abstract
Surface charges play a fundamental role in physics and chemistry, particularly in shaping the catalytic properties of nanomaterials. Tracking nanoscale surface charge dynamics remains challenging due to the involved length and time scales. Here, we demonstrate real-time access to the nanoscale charge dynamics on dielectric nanoparticles employing reaction nanoscopy. We present a four-dimensional visualization of the non-linear charge dynamics on strong-field irradiated single SiO nanoparticles with femtosecond-nanometer resolution and reveal how surface charges affect surface molecular bonding with quantum dynamical simulations. We performed semi-classical simulations to uncover the roles of diffusion and charge loss in the surface charge redistribution process. Understanding nanoscale surface charge dynamics and its influence on chemical bonding on a single nanoparticle level unlocks an increased ability to address global needs in renewable energy and advanced healthcare.
Cite
@article{arxiv.2401.02621,
title = {Tracking Surface Charge Dynamics on Single Nanoparticles},
author = {Ritika Dagar and Wenbin Zhang and Philipp Rosenberger and Thomas M. Linker and Ana Sousa-Castillo and Marcel Neuhaus and Sambit Mitra and Shubhadeep Biswas and Alexandra Feinberg and Adam M. Summers and Aiichiro Nakano and Priya Vashishta and Fuyuki Shimojo and Jian Wu and Cesar Costa Vera and Stefan A. Maier and Emiliano Cortés and Boris Bergues and Matthias F. Kling},
journal= {arXiv preprint arXiv:2401.02621},
year = {2024}
}
Comments
26 pages with (4+6(SI)) figures