Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Adhesion

Adhesion

Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...

Capillarity in Fluid

Capillarity in Fluid

Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...

Rise of Liquid in a Capillary Tube

Rise of Liquid in a Capillary Tube

When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.

You might also read

Related Articles

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

Sort by

Same author

Portable light weight open tubular ion chromatograph for field determination of environmental anions.

Journal of chromatography. A·2023

Same author

Xeropreservation of functionalized lipid biomarkers in hyperarid soils in the Atacama Desert.

Organic geochemistry·2018

Same author

Admittance Scanning for Whole Column Detection.

Analytical chemistry·2017

Same author

Evaluation of Amount of Blood in Dry Blood Spots: Ring-Disk Electrode Conductometry.

Analytical chemistry·2016

Same author

An open tubular ion chromatograph.

Analytical chemistry·2014

Same author

Admittance detector for high impedance systems: design and applications.

Analytical chemistry·2014

Search research articles

Related Experiment Video

Updated: Apr 21, 2026

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

Capillary scale admittance detection.

Min Zhang¹, Brian N Stamos, Natchanon Amornthammarong

¹Department of Chemistry and Biochemistry, The University of Texas at Arlington , Arlington, Texas 76019-0065, United States.

Analytical Chemistry

|October 31, 2014

Summary

Contactless conductivity detection (C(4)D) performance degrades at high cell resistance. This study provides optimal operating frequencies for C(4)D systems, especially for low-conductance solutions and small capillaries.

More Related Videos

Dynamic Adhesion Assay for the Functional Analysis of Anti-adhesion Therapies in Inflammatory Bowel Disease

Dynamic Adhesion Assay for the Functional Analysis of Anti-adhesion Therapies in Inflammatory Bowel Disease

Published on: September 20, 2018

$Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing$

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Related Experiment Videos

Last Updated: Apr 21, 2026

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces

Published on: September 9, 2022

Dynamic Adhesion Assay for the Functional Analysis of Anti-adhesion Therapies in Inflammatory Bowel Disease

Dynamic Adhesion Assay for the Functional Analysis of Anti-adhesion Therapies in Inflammatory Bowel Disease

Published on: September 20, 2018

$Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing$

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Area of Science:

Analytical Chemistry
Electrochemistry
Instrumentation

Background:

Contactless conductivity detection (C(4)D) systems, also known as oscillometric detection, respond to admittance.
Optimal operating conditions for C(4)D are not well-defined for high cell resistance scenarios, common in small capillaries or low-conductance solutions.

Purpose of the Study:

To investigate the behavior of C(4)D systems under high cell resistance conditions.
To provide guidance on optimum operating frequencies for C(4)D, considering solution capacitance.

Main Methods:

Theoretical and experimental investigation of capillaries (5-160 μm inner radii) with varying specific conductances (1-1400 μS/cm).
Development and use of a 400-element discrete model, incorporating measured wall and stray capacitances.
Comparison of model predictions with experimental measurements across a range of frequencies and conductances.

Main Results:

The study confirms that C(4)D response is quasi-linear with cell conductance only within specific frequency ranges, which decrease with increasing cell resistance.
Simulations accurately predicted experimental results, including negative response behaviors under certain high-frequency, low-conductance conditions.
Optimal operating frequencies were determined for various experimental conditions.

Conclusions:

Capacitance significantly impacts C(4)D performance at high frequencies and low conductances.
The developed model provides a valuable tool for understanding and optimizing C(4)D systems.
This research offers practical guidance for achieving reliable C(4)D measurements in challenging sample matrices.