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

Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia01:30

Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia

2.1K
Depending on the target organ, local anesthetics (LAs) can be administered via various routes. In surface anesthesia, LAs are applied directly to the surface of the skin or mucous membranes. It is widely used for topical skin numbing before venipuncture or minor surgical procedures. Commonly used surface local anesthetics are lidocaine or benzocaine sprays or creams. Surface anesthesia occurs within 5 minutes and lasts for about 60 minutes. One of the main disadvantages of topical anesthesia is...
2.1K
Conduction System of the Heart01:19

Conduction System of the Heart

13.5K
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
13.5K
Conduction System of the Heart01:20

Conduction System of the Heart

3.9K
The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
3.9K
Conduct Disorder01:28

Conduct Disorder

591
Conduct disorder is a complex mental health diagnosis characterized by a repetitive and persistent pattern of behavior that violates societal norms, the rights of others, or age-appropriate rules. The diagnostic criteria for conduct disorder require the presence of at least three problematic behaviors within the past 12 months, with at least one occurring in the past six months. These behaviors are grouped into four categories: aggression toward people and animals; destruction of property;...
591
Electrical Conductivity01:13

Electrical Conductivity

1.8K
In perfect conductors, the electric field inside is always zero due to the abundance of free electrons, which nullify any field by flowing. As a result, any residual charge resides on the surface.
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
More generally, it is related to the force per unit charge, which involves the...
1.8K
Resistance and Conductance01:25

Resistance and Conductance

520
A conductor's DC resistance at a given temperature is influenced by its resistivity, length, and cross-sectional area. Resistivity is an inherent property of the conductor material, with annealed copper serving as the international standard for measurement. For instance, the resistivity of hard-drawn aluminum at 20 degrees Celsius is 61% of the standard conductivity of annealed copper.
Various factors impact the resistance of a conductor. Spiraling in stranded conductors increases their...
520

You might also read

Related Articles

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

Sort by
Same author

3D-Printed Milli-Fluidic Mixing-Extrusion Platform for Continuous, High-Throughput LNP Production.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Direct imaging-based gradient metasurface sensor enabling spectrometer-free ultrasensitive biomolecule detection.

Nature communications·2026
Same author

Soil water harvest inspired by desert horned lizards, <i>Phrynosoma platyrhinos</i>.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Natural killer cell encapsulation in core-shell proteinic adhesive microcapsules for persistent and localized release of cytotoxic factors.

Colloids and surfaces. B, Biointerfaces·2026
Same author

3D printing of droplet microfluidic devices: principles, wetting control, scale-up, and beyond.

Lab on a chip·2026
Same author

Decoding the full chemical catalytic cycle of class I PHA synthase: A QM/MM metadynamics perspective.

International journal of biological macromolecules·2026
Same journal

Metal-Organic Framework Multizyme Colloids with Joint Antioxidant and Protease Function.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Morphology Engineering of Co<sub>3</sub>O<sub>4</sub> via Cetyltrimethylammonium Bromide-Mediated ZIF-67 Synthesis for Efficient Photo-Assisted Electrooxidation of Methanol.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Speciation of Silanol Groups on Commercial Precipitated Silicas via IR Spectroscopy.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Regenerable PVA Hydrogel-Functionalized Optical Fiber Sensor for Ultra-Trace Detection of Berberine Hydrochloride.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Hydrogen Plasma-Driven Surface Defect Engineering of ZnO Nanorods: Correlating Electronic Structure and Photoelectrochemical Performance.

Langmuir : the ACS journal of surfaces and colloids·2026
Same journal

Cooperative Self-Assembly of Nanoparticle-Encapsulating Hybrid Protein Cages.

Langmuir : the ACS journal of surfaces and colloids·2026
See all related articles

Related Experiment Video

Updated: Feb 9, 2026

Author Spotlight: Advancing Energy Solutions Using Nanocomposites as Processed Thermoelectric Materials
09:23

Author Spotlight: Advancing Energy Solutions Using Nanocomposites as Processed Thermoelectric Materials

Published on: May 17, 2024

2.2K

Surface Conduction in a Microchannel.

Seoyun Sohn, Inhee Cho, Soonhyun Kwon

    Langmuir : the ACS Journal of Surfaces and Colloids
    |June 9, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Surface conduction in microchannels is crucial for electrokinetic research and nanofluidic devices. This study introduces the perimeter to area ratio (L/A) as a key parameter for understanding 3D ion transport, improving microchannel design.

    More Related Videos

    Author Spotlight: Revolutionizing Microfluidics Through Microchannel Fabrication on Nanopaper
    03:58

    Author Spotlight: Revolutionizing Microfluidics Through Microchannel Fabrication on Nanopaper

    Published on: October 6, 2023

    2.4K
    Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip
    10:55

    Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

    Published on: October 21, 2013

    14.4K

    Related Experiment Videos

    Last Updated: Feb 9, 2026

    Author Spotlight: Advancing Energy Solutions Using Nanocomposites as Processed Thermoelectric Materials
    09:23

    Author Spotlight: Advancing Energy Solutions Using Nanocomposites as Processed Thermoelectric Materials

    Published on: May 17, 2024

    2.2K
    Author Spotlight: Revolutionizing Microfluidics Through Microchannel Fabrication on Nanopaper
    03:58

    Author Spotlight: Revolutionizing Microfluidics Through Microchannel Fabrication on Nanopaper

    Published on: October 6, 2023

    2.4K
    Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip
    10:55

    Procedure for the Development of Multi-depth Circular Cross-sectional Endothelialized Microchannels-on-a-chip

    Published on: October 21, 2013

    14.4K

    Area of Science:

    • Electrokinetics
    • Microfluidics
    • Nanofluidics

    Background:

    • Surface conduction is a primary ion transport mechanism in micro/nanofluidic devices.
    • Previous theoretical models relied on 2D analysis with an infinite axis assumption, limiting practical applications.
    • A need exists for a more comprehensive understanding of 3D ion transport in complex microchannel networks.

    Purpose of the Study:

    • To experimentally investigate and quantitatively interpret surface conductive ion transportation in microchannels considering all three-dimensional length scales.
    • To identify a single, practical parameter that characterizes surface conduction in microchannels.
    • To demonstrate a micro/nanofluidic application based on the findings.

    Main Methods:

    • Conducted rigorous experiments on microchannels to incorporate 3D length scales.
    • Analyzed the relationship between microchannel geometry and ionic transport.
    • Introduced and validated the perimeter to area ratio (L/A) as a key parameter.

    Main Results:

    • The perimeter to area ratio (L/A) effectively quantifies surface conductive ion transportation in 3D.
    • Overlimiting conductance in microchannels increases with a larger perimeter (higher specific surface area), even with identical cross-sectional areas.
    • A micro/nanofluidic diode was successfully demonstrated using channels with differing L/A values.

    Conclusions:

    • The L/A ratio provides a practical parameter for understanding and predicting ion transport in micro/nanofluidic systems.
    • This research offers a guideline for designing more efficient micro/nanofluidic devices by optimizing channel geometry.
    • The findings advance fundamental electrokinetic research and enable novel micro/nanofluidic applications.