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

Accelerating Fluids01:17

Accelerating Fluids

1.9K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
1.9K
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

313
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
313
Velocity and Acceleration in Steady and Unsteady Flow01:11

Velocity and Acceleration in Steady and Unsteady Flow

302
In fluid mechanics, velocity and acceleration are key concepts for analyzing particle motion in both steady and unsteady flow. Consider a fluid particle moving along a pathline, where its velocity depends on its position and time. The particle's acceleration is obtained by differentiating the velocity with respect to time.
The acceleration can be generalized to any point in the flow, and expressed as components along three perpendicular directions, representing changes in velocity over...
302
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

660
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
660
Rocket Propulsion In Empty Space - II01:12

Rocket Propulsion In Empty Space - II

3.2K
The motion of a rocket is governed by the conservation of momentum principle. A rocket's momentum changes by the same amount (with the opposite sign) as the ejected gases. As time goes by, the rocket's mass (which includes the mass of the remaining fuel) continuously decreases, and its velocity increases. Therefore, the principle of conservation of momentum is used to explain the dynamics of a rocket's motion. The ideal rocket equation gives the change in velocity that a rocket...
3.2K
Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

785
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...
785

You might also read

Related Articles

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

Sort by
Same author

Hand-Held Ultrasonic-Arc Discharge Ionization Enables Rapid On-Site Detection of Sulfur-Fumigated Wolfberries.

Analytical chemistry·2026
Same author

Mapping the Fine-Scale Metabolic Heterogeneity of the Honeybee Brain by Mass Spectrometry Imaging.

Analytical chemistry·2026
Same author

A Miniature Ion Trap Particle Mass Spectrometer with an Integrated Optical and Charge Detection System.

Journal of the American Society for Mass Spectrometry·2026
Same author

Graphdiyne-assisted LDI-MS for rapid, non-invasive urine metabolomic profiling in tuberculosis screening.

The Analyst·2026
Same author

MALDI Mass Spectrometry Imaging of Metal Ions and Metabolites in Tissues Using a Bifunctional Matrix.

Analytical chemistry·2025
Same author

Hand-Held Nanoelectrospray Ionization with Frequency and Amplitude Tunability for Metabolomics of Saline Biosamples.

Analytical chemistry·2025
Same journal

Heterojunction-Enhanced Interfacial Evanescent-Tunable Fiber Optic Probe for Amplification-free CRISPR/Cas12a-Based Rapid and Ultrasensitive Detection of MPXV.

Analytical chemistry·2026
Same journal

Tunable Charge Transfer in Europium Metal-Organic Frameworks for Ratiometric Sensing of a Sarin Simulant.

Analytical chemistry·2026
Same journal

A β-Cyclodextrin/Ag<sub>2</sub>O@MWCNT-Based Stochastic Platform for the Simultaneous Molecular Enantiorecognition and Enantioanalysis of Twelve Amino Acids in Biological Matrices.

Analytical chemistry·2026
Same journal

The ACS at 150: The History of Analytical Chemistry Publications and a Century of Progress.

Analytical chemistry·2026
Same journal

Machine Learning-Enabled Image Analysis of Complex Chemical Mixtures: Synthetic Urine Droplets as a Test System.

Analytical chemistry·2026
Same journal

H<sub>2</sub>O<sub>2</sub>/Viscosity Tandem-Locked Fluorescent Probes Based on an In Situ Fluorophore Synthesis Strategy for Colitis Imaging and Diagnosis.

Analytical chemistry·2026
See all related articles

Related Experiment Video

Updated: Dec 10, 2025

Preparation of Free-Surface Hyperbolic Water Vortices
04:35

Preparation of Free-Surface Hyperbolic Water Vortices

Published on: July 28, 2023

3.5K

A Gas-Phase Reaction Accelerator Using Vortex Flows.

Yuze Li1,2,3, Lingwei Meng2,3, Guanghui Wang4

  • 1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 10084, China.

Analytical Chemistry
|September 2, 2020
PubMed
Summary
This summary is machine-generated.

A novel vortex tube enhances chemical reactions in gas-phase microdroplets, improving mass spectrometry intensity and reaction efficiency. This method allows precise control over reaction times for detailed kinetic studies.

More Related Videos

Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
07:24

Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

Published on: February 19, 2018

10.3K
Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures
09:16

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures

Published on: November 7, 2016

11.2K

Related Experiment Videos

Last Updated: Dec 10, 2025

Preparation of Free-Surface Hyperbolic Water Vortices
04:35

Preparation of Free-Surface Hyperbolic Water Vortices

Published on: July 28, 2023

3.5K
Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
07:24

Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

Published on: February 19, 2018

10.3K
Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures
09:16

Reaction Kinetics and Combustion Dynamics of I4O9 and Aluminum Mixtures

Published on: November 7, 2016

11.2K

Area of Science:

  • Analytical Chemistry
  • Physical Chemistry
  • Chemical Engineering

Background:

  • Gas-phase microdroplets are utilized for accelerating chemical reactions.
  • Efficient ion transfer and confinement are crucial for sensitive mass spectrometry detection.
  • Controlling reaction kinetics in microscale environments presents challenges.

Purpose of the Study:

  • To develop and characterize a vortex tube as a novel reaction accelerator for gas-phase microdroplet chemistry.
  • To investigate the impact of vortex-induced flow on ion transfer, droplet desolvation, and reaction kinetics.
  • To demonstrate the application of the vortex tube for precise reaction time control and kinetic parameter determination.

Main Methods:

  • Development of a vortex tube integrated with a nanoelectrospray ionization (nanoESI) source and mass spectrometry (MS) inlet.
  • Characterization of vortex tube performance using aromatization, amination isomerization, and acid-induced cytochrome c unfolding reactions.
  • Analysis of mass spectrometry intensity, droplet desolvation, ion confinement, and reaction conversion ratios.

Main Results:

  • The vortex tube significantly improved mass spectrometry intensity by 2-3 orders of magnitude.
  • Vortex flow enhanced reactant mixing and reaction conversion ratios by 2-3 fold.
  • Precise control of reaction time (∼60 μs) was achieved by adjusting flow rate.
  • Intermediates of amination isomerization were tracked, and kinetic parameters for cytochrome c unfolding were determined.

Conclusions:

  • The vortex tube is an effective device for accelerating gas-phase microdroplet reactions and enhancing MS detection.
  • The technology offers precise control over reaction kinetics, enabling detailed mechanistic and kinetic studies.
  • This approach provides a new tool for studying fast reactions and determining kinetic parameters in microscale systems.