Concept
Longueur de Debye
Publications associées (69)
Effect of a temperature gradient on the screening properties of ionic fluids
Federico Grasselli, Andrea Grisafi
The electrostatic screening properties of ionic fluids are of paramount importance in countless physical processes. Yet the screening behavior of ionic conductors out of thermal equilibrium has to date mainly been studied in the context of thermoelectric p ...
AMER PHYSICAL SOC2023Many-body screening effects in liquid water
Alfredo Pasquarello, Igor Reshetnyak, Arnaud Guillaume Lorin
The screening arising from many-body excitations is a crucial quantity for describing absorption and inelastic X-ray scattering (IXS) of materials. Similarly, the electron screening plays a critical role in state-of-the-art approaches for determining the f ...
NATURE PORTFOLIO2023Range-separated hybrid functionals for accurate prediction of band gaps of extended systems
Alfredo Pasquarello, Stefano Falletta, Jing Yang
In this work, we systematically evaluate the accuracy in band gap prediction of range-separated hybrid functionals on a large set of semiconducting and insulating materials and carry out comparisons with the performance of their global counterparts. We obs ...
NATURE PORTFOLIO2023Evolution 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 CHEMISTRY2023Surface Charge Boundary Condition Often Misused in CO2 Reduction Models
Sophia Haussener, Etienne Boutin, Evan Fair Johnson
The Poisson-Nernst-Planck equations have been used to model species transport in electrochemical CO2 reduction, where the surface charge boundary condition accounts for the potential drop across the Stern layer. A direct comparison of the published models ...
AMER CHEMICAL SOC2023Development of the self-modulation instability of a relativistic proton bunch in plasma
Ambrogio Fasoli, Ivo Furno, Patrick Blanchard, Yanis Andrebe, Riccardo Agnello, Christine Stollberg, Sun Hee Kim, Alban Sublet, Shuai Liu
Self-modulation is a beam-plasma instability that is useful to drive large-amplitude wakefields with bunches much longer than the plasma skin depth. We present experimental results showing that, when increasing the ratio between the initial transverse size ...
2023Aptamer-field-effect transistors for small-molecule sensing in complex environments
Aptamer-functionalized field-effect transistor (FET) biosensors enable detection of small-molecule targets in complex environments such as tissue and blood. Conventional FET-based platforms suffer from Debye screening in high ionic strength physiological e ...
Humana2022Sheath collapse at critical shallow angle due to kinetic effects
The Debye sheath is known to vanish completely in magnetised plasmas for a sufficiently small electron gyroradius and small angle between the magnetic field and the wall. This angle depends on the current onto the wall. When the Debye sheath vanishes, ther ...
IOP Publishing Ltd2022Label-Free C-Reactive Protein Si Nanowire FET Sensor Arrays With Super-Nernstian Back-Gate Operation
Mihai Adrian Ionescu, Yann Christophe Sprunger, Aristea Grammoustianou, Luca Capua, Felix Risch, Ron Gill
We present a CMOS-compatible double gate and label-free C-reactive protein (CRP) sensor, based on silicon on insulator (SOI) silicon nanowires arrays. We exploit a reference subtracted detection method and a super-Nernstian internal amplification given by ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022Ion and Trap Induced Dynamic Phenomena in Salt Semiconductor Devices
State-of-the-art organic light-emitting diodes (OLEDs) used in commercial display technology are complex multilayer structures. In contrast, the light-emitting electrochemical cell (LEC) can be built from a single emissive layer sandwiched between two elec ...
EPFL2021