Electrical Double Layer Probed by Surface-Specific Vibrational Technique

Vibrational signature of double-end-linked molecules at Au nanojunctions probed by surface-enhanced Raman spectroscopy.

In the past decade, a lot of efforts have been made to look for new materials and develop new methods for molecular electronic devices. Metal/molecule/metal junctions have been widely used as a model system for discovering new devices and studying the working principle of the molecular devices. Up to date, molecular rectifiers, wires, and switches have been reported on the basis of the above st...

Electrical Double Layer

Discovery of Cellulose Surface Layer Conformation by Nonlinear Vibrational Spectroscopy

Significant questions remain in respect to cellulose's structure and polymorphs, particularly the cellulose surface layers and the bulk crystalline core as well as the conformational differences. Total Internal Reflection Sum Frequency Generation Vibrational Spectroscopy (TIR-SFG-VS) combined with conventional SFG-VS (non-TIR) enables selectively characterizing the molecular structures of surfa...

Simulating the Electrical Double Layer Capacitance

In this study, a computational model was developed using commercial finite element analysis package COMSOL Multiphysics (Burlington, MA) to simulate the electrical double layer (EDL) structure and quantify the EDL capacitance for the first time. In the modeling the electrochemical process at an EDL structure was considered by solving the Poisson, Nernst-Plank and Butler-Volmer equations without...

The Electrical Double Layer and Its Structure

At any electrode immersed in an electrolyte solution, a specific interfacial region is formed. This region is called the double layer. The electrical properties of such a layer are important, since they significantly affect the electrochemical measurements. In an electrical circuit used to measure the current that flows at a particular working electrode, the double layer can be viewed as a capa...