Publication
Second harmonic scattering of nanoparticles: A journey into the electrical double layer
Related publications (50)
Effects of Hyporheic Exchange and Settlement on the Particle Size Distribution of Colloids
David Andrew Barry, Qihao Jiang
Colloid particle size plays an important role in contaminant adsorption and clogging in the hyporheic zone, but it remains unclear how the particle size changes during the transport of colloids. This study investigated the variation of the particle size of ...
New York2024Evolution of the electrical double layer with electrolyte concentration probed by second harmonic scattering
Sylvie Roke, Arianna Marchioro, Bingxin Chu, Marie Bischoff
Investigating the electrical double layer (EDL) structure has been a long-standing challenge and has seen the emergence of several sophisticated techniques able to probe selectively the few molecular layers of a solid/water interface. While a qualitative e ...
ROYAL SOC CHEMISTRY2023Size dependence of second-harmonic scattering from nanoparticles: Disentangling surface and electrostatic contributions
Sylvie Roke, Arianna Marchioro, Bingxin Chu
Polarimetric angle-resolved second-harmonic scattering (AR-SHS) is an all-optical tool enabling the study of unlabeled interfaces of nano-sized particles in an aqueous solution. As the second harmonic signal is modulated by interference between nonlinear c ...
AIP Publishing2023Optical manipulation of plasmonic nanoparticles: Applications in surface chemistry and nano-optics
Optical tweezers are devices that can manipulate nano- and microparticles using a laser. The principle of optical tweezers is to apply a force to an object using the momentum of light. This force is very small, but it is sufficient to move things in the mi ...
EPFL2023Modulating the Surface Properties of Lithium Niobate Nanoparticles by Multifunctional Coatings Using Water-in-Oil Microemulsions
Sandrine Gerber, Alessandra Spada, Adrian Stefan Gheata, Manon Inès Noëlla Wittwer
Inorganic nanoparticles (NPs) have emerged as promising tools in biomedical applications, owing to their inherent physicochemical properties and their ease of functionalization. In all potential applications, the surface functionalization strategy is a key ...
2023Molecular insights into the electrical double layer of colloidal oxide particles obtained through second harmonic scattering
Photocatalytic applications play an essential role in the search for alternative energy sources and environmental decontamination techniques. It is of fundamental interest to understand on a molecular level the aqueous solid/liquid interface, where photoca ...
EPFL2022Low and high frequency electromagnetic forces: numerical modelling and practical applications
The understanding and manipulation of nanoscale analytes is a central theme in nanotechnology and has been one of the main driving forces behind the development of this field as we know it today. Furthermore, such a technology has the potential to also rev ...
EPFL2022Electrokinetic, electrochemical, and electrostatic surface potentials of the pristine water liquid-vapor interface
Although conceptually simple, the air-water interface displays rich behavior and is subject to intense experimental and theoretical investigations. Different definitions of the electrostatic surface potential as well as different calculation methods, each ...
AIP Publishing2022Surface Potential and Interfacial Water Order at the Amorphous TiO2 Nanoparticle/Aqueous Interface
Sylvie Roke, Arianna Marchioro, Marie Bischoff
Colloidal nanoparticles exhibit unique size-dependent properties differing from their bulk counterpart, which can be particularly relevant for catalytic applications. To optimize surface-mediated chemical reactions, the understanding of the microscopic str ...
AMER CHEMICAL SOC2020Self-Propulsion of Active Colloids via Ion Release: Theory and Experiments
Ignacio Pagonabarraga Mora, Samuel Sanchez
We study the self-propulsion of a charged colloidal particle that releases ionic species using theory and experiments. We relax the assumptions of thin Debye length and weak nonequilibrium effects assumed in classical phoretic models. This leads to a numbe ...
2020