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

Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

16.9K
The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase...
16.9K
Capillarity in Fluid01:19

Capillarity in Fluid

1.6K
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...
1.6K
Vaporization01:18

Vaporization

33.3K
The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
33.3K
Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

3.1K
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.
3.1K

You might also read

Related Articles

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

Sort by
Same author

High-performance nanobiosensing technologies for future diagnostic needs.

Trends in biotechnology·2025
Same author

Correction to "Mass Transport in the Stefan-Knudsen Transition Region during Vacuum Drying at Different Pressures in a Porous Structure Resembling Battery Electrodes".

Langmuir : the ACS journal of surfaces and colloids·2024
Same author

Using Hierarchically Structured, Nanoporous Particles as Building Blocks for NCM111 Cathodes.

Nanomaterials (Basel, Switzerland)·2024
Same author

Mass Transport in the Stefan-Knudsen Transition Region during Vacuum Drying at Different Pressures in a Porous Structure Resembling Battery Electrodes.

Langmuir : the ACS journal of surfaces and colloids·2023
Same author

Drying and Coating of Perovskite Thin Films: How to Control the Thin Film Morphology in Scalable Dynamic Coating Systems.

ACS applied materials & interfaces·2022
Same author

Critical Solutal Marangoni Number Correlation for Short-Scale Convective Instabilities in Drying Poly(vinyl acetate)-Methanol Thin Films.

Polymers·2021

Related Experiment Video

Updated: May 4, 2026

Process of Making Three-dimensional Microstructures using Vaporization of a Sacrificial Component
08:31

Process of Making Three-dimensional Microstructures using Vaporization of a Sacrificial Component

Published on: November 2, 2013

8.6K

Evaporation from open microchannel grooves.

Sibylle Kachel1, Ying Zhou, Philip Scharfer

  • 1Institute of Thermal Process Engineering, Thin Film Technology, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany.

Lab on a Chip
|December 19, 2013
PubMed
Summary

Water evaporation in microchannels is crucial for diagnostic devices. Wider channels reduce evaporation rates, concentrating analytes effectively for improved performance.

More Related Videos

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
08:38

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

10.3K
Fabrication of the Thermoplastic Microfluidic Channels
16:00

Fabrication of the Thermoplastic Microfluidic Channels

Published on: February 3, 2008

12.8K

Related Experiment Videos

Last Updated: May 4, 2026

Process of Making Three-dimensional Microstructures using Vaporization of a Sacrificial Component
08:31

Process of Making Three-dimensional Microstructures using Vaporization of a Sacrificial Component

Published on: November 2, 2013

8.6K
Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
08:38

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

10.3K
Fabrication of the Thermoplastic Microfluidic Channels
16:00

Fabrication of the Thermoplastic Microfluidic Channels

Published on: February 3, 2008

12.8K

Area of Science:

  • Fluid dynamics
  • Mass transfer
  • Microfluidics

Background:

  • Evaporation in microchannels is critical for microfluidic diagnostic devices.
  • Standard mass transfer correlations are inapplicable in microchannels due to coupled convection-diffusion effects.

Purpose of the Study:

  • Investigate water evaporation from open u-shaped microchannels.
  • Determine the influence of channel width and airflow on evaporation rates.
  • Compare experimental results with macroscopic predictions.

Main Methods:

  • Utilized a novel optical method for evaporation rate measurement.
  • Employed a gravimetric method for validation.
  • Conducted experiments in a regime where convection and diffusion are equally important.

Main Results:

  • Both optical and gravimetric methods provided consistent mass transfer coefficients.
  • Observed relationships between mass transfer coefficient, air velocity, and channel width deviate significantly from macroscopic models.
  • Analyte concentration increases rapidly in microchannels due to evaporation.

Conclusions:

  • Wider microchannels are more effective in minimizing relative evaporation rates.
  • Microchannel evaporation significantly impacts analyte concentration in diagnostic devices.
  • Findings offer insights for optimizing microfluidic device design.