Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Electrical Double Layer01:30

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current passing...
Standard Electrode Potentials03:02

Standard Electrode Potentials

On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
Calculations of Electric Potential II01:27

Calculations of Electric Potential II

An electric dipole is a system of two equal but opposite charges, separated by a fixed distance. This system is used to model many real-world systems, including atomic and molecular interactions. One of these systems is the water molecule, but only under certain circumstances. These circumstances are met inside a microwave oven, where electric fields with alternating directions make the water molecules change orientation. This vibration is equivalent to heat at the molecular level.
Consider a...
Processes at Electrodes01:30

Processes at Electrodes

The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nanoengineering of non-aqueous liquid electrolyte solutions for future lithium metal batteries.

Nature nanotechnology·2026
Same author

Rotation Kinetics of Molecular Motors Influence Their Ability to Kill Cancer Cells and Induce Cellular Calcium Signaling.

Journal of the American Chemical Society·2025
Same author

Direct in situ measurements of electrical properties of solid-electrolyte interphase on lithium metal anodes.

Nature energy·2024
Same author

Creating covalent bonds between Cu and C at the interface of metal/open-ended carbon nanotubes.

Nanoscale advances·2024
Same author

Molecular jackhammers eradicate cancer cells by vibronic-driven action.

Nature chemistry·2023
Same author

Dendrite formation in silicon anodes of lithium-ion batteries.

RSC advances·2022

Related Experiment Video

Updated: Jul 19, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Molecular electrostatic potential devices on graphite and silicon surfaces.

Norma L Rangel1, Jorge M Seminario

  • 1Department of Chemical Engineering, Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843-3122, USA.

The Journal of Physical Chemistry. A
|November 3, 2006
PubMed
Summary

Molecular gates utilizing molecular electrostatic potentials (MEP) function on silicon substrates but are affected by graphite. Substrate choice is a key design variable for molecular potential applications.

More Related Videos

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
09:31

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

Development of a 3D Graphene Electrode Dielectrophoretic Device
11:15

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

Related Experiment Videos

Last Updated: Jul 19, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
09:31

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

Development of a 3D Graphene Electrode Dielectrophoretic Device
11:15

Development of a 3D Graphene Electrode Dielectrophoretic Device

Published on: June 22, 2014

Area of Science:

  • Molecular electronics
  • Surface science

Background:

  • Molecular gates are crucial components in molecular electronics.
  • Understanding substrate effects is vital for device performance.

Purpose of the Study:

  • To investigate the influence of different substrates on molecular gate behavior using molecular electrostatic potentials (MEP).
  • To establish substrate selection as a design parameter for molecular potential-based devices.

Main Methods:

  • Utilizing molecular electrostatic potentials (MEP) to design and analyze molecular gates.
  • Testing molecular gate performance on hydrogen-passivated silicon and graphite substrates.

Main Results:

  • Molecular gates function as expected on hydrogen-passivated silicon substrates, similar to vacuum conditions.
  • Graphite substrates significantly alter the behavior of molecular gates.
  • The substrate's intrinsic potential, calculable via MEP, influences molecular gate performance.

Conclusions:

  • Substrate choice is a critical factor in the practical implementation of molecular potential-based devices.
  • Hydrogen-passivated silicon is a suitable substrate, while graphite requires careful consideration.
  • MEP calculations can predict substrate influence, enabling rational design.