Simon Grall
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The Energetics of Electron Transfer in Redox‐DNA Layers Mimics That of Redox Proteins Open
Redox‐DNA layers have recently shown unique properties, such as tunable reorganization energy of electron transfer that can be modulated by DNA length or hybridization state and completely suppressed under nanoconfinement. These discoverie…
Activationless Electron Transfer of Redox-DNA in Electrochemical Nanogaps Open
Our recent discovery of decreased reorganization energy in electrode-tethered redox-DNA systems prompts inquiries into the origin of this phenomenon and suggests its potential use to lower the activation energy of electrochemical reactions…
Ballistic Brownian Motion of Nanoconfined DNA Open
Theoretical treatments of polymer dynamics in liquid generally start with the basic assumption that motion at the smallest scale is heavily overdamped; therefore, inertia can be neglected. We report on the Brownian motion of tethered DNA u…
Electrochemical Shot Noise of a Redox Monolayer Open
Redox monolayers are the base for a wide variety of devices including high-frequency molecular diodes or biomolecular sensors. We introduce a formalism to describe the electrochemical shot noise of such a monolayer, confirmed experimentall…
Ballistic Brownian motion of nanoconfined DNA Open
Theoretical treatments of polymer dynamics in liquid generally start with the basic assumption that motion at the smallest scale is heavily overdamped; therefore, inertia can be neglected. We report on the Brownian motion of tethered DNA u…
Nanoscale electrochemical charge transfer kinetics investigated by electrochemical scanning microwave microscopy Open
EC-SMM is a powerful technique in nano-electrochemistry. It allows for local cyclic voltammetry (LCV) and electrochemical impedance spectroscopy (LEIS) quantifying nanoscale redox reaction with atto-Ampere sensitivity.
Electrochemical Shot-Noise of a Redox Monolayer Open
Redox monolayers are the base for a wide variety of devices including high-frequency molecular diodes or biomolecular sensors. We introduce a formalism to describe the electrochemical shot-noise of such monolayer, confirmed experimentally …
Random telegraph signals in nanoscale vertical junctionless transistor with gate-all-around Open
Preprint
Attoampere Nanoelectrochemistry: Attoampere Nanoelectrochemistry (Small 29/2021) Open
High frequency (GHz) signals are sent to a scanning tunneling microscope probe down to the surface of an alkylferrocene self-assembled monolayer in liquid and allow to measure locally electrochemical charge transfer corresponding to curren…
Attoampere Nanoelectrochemistry Open
Electrochemical microscopy techniques have extended the understanding of surface chemistry to the micrometer and even sub‐micrometer level. However, fundamental questions related to charge transport at the solid‐electrolyte interface, such…
Attoampere Nanoelectrochemistry Open
Local electrochemical measurements and imaging at the nanoscale are crucial for the future development of molecular devices, sensors, materials engineering, electrophysiology and various energy applications from artificial photosynthesis t…
Attoampere Nanoelectrochemistry Open
Local electrochemical measurements and imaging at the nanoscale are crucial\nfor the future development of molecular devices, sensors, materials\nengineering, electrophysiology and various energy applications from artificial\nphotosynthesi…
The Role of Sacrificial and/or Protective Layers to Improve the Sintering of Electroactive Ceramics: Application to Piezoelectric PZT-Printed Thick Films for MEMS Open
Piezoelectric thick films are of real interest for devices such as ceramic Micro-ElectroMechanical Systems (MEMS) because they bridge the gap between thin films and bulk ceramics. The basic design of MEMS includes electrodes, a functional …
View article: Screen-Printed Microcantilevers for Environmental Sensing
Screen-Printed Microcantilevers for Environmental Sensing Open
This work investigates different geometries for fully screen-printed self-actuated self-readout microcantilevers made using a sacrificial layer process. The microcantilevers are made of PZT sandwiched between two gold electrodes. Q-factors…