Tracking surface charge dynamics on single nanoparticles
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- Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-85748 Garching, Germany.; Max Planck Institute of Quantum Optics, D-85748 Garching, Germany.; SLAC
- Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-85748 Garching, Germany.; Max Planck Institute of Quantum Optics, D-85748 Garching, Germany.; State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China.
- Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-85748 Garching, Germany.; Max Planck Institute of Quantum Optics, D-85748 Garching, Germany.
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
- Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-80539 Munich, Germany.
- Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-85748 Garching, Germany.; Max Planck Institute of Quantum Optics, D-85748 Garching, Germany.; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
- Collobratory for Advanced Computing and Simulations, University of Southern California, Los Angeles, CA 90089, USA.
- Department of Physics, Kumamoto University, Kumamoto 860-0862, Japan.
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China.
- Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-85748 Garching, Germany.; Department of Physics, Escuela Politecnica Nacional, Quito 170525, Ecuador.
- Department of Physics, Imperial College London, London SW7 2AZ, UK.; School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia.
- Faculty of Physics, Ludwig-Maximilians-Universität Munich, D-85748 Garching, Germany.; Max Planck Institute of Quantum Optics, D-85748 Garching, Germany.; Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.; Applied Physics Department, Stanford University, Stanford, CA 94305, USA.
Surface charges play a fundamental role in physics and chemistry, in particular in shaping the catalytic properties of nanomaterials. However, tracking nanoscale surface charge dynamics remains challenging due to the involved length and time scales. Here, we demonstrate time-resolved access to the nanoscale charge dynamics on dielectric nanoparticles using reaction nanoscopy. We present a four-dimensional visualization of the spatiotemporal evolution of the charge density on individual SiO 2 nanoparticles under strong-field irradiation with femtosecond-nanometer resolution. The initially localized surface charges exhibit a biexponential redistribution over time. Our findings reveal the influence of surface charges on surface molecular bonding through 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 health care.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 2375506
- Journal Information:
- Science Advances, Journal Name: Science Advances Journal Issue: 32 Vol. 10; ISSN 2375-2548
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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