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

Design Example: Creating a Hydraulic Model of a Dam Spillway

Design Example: Creating a Hydraulic Model of a Dam Spillway

Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.

Excess Pressure Inside a Drop and a Bubble

Excess Pressure Inside a Drop and a Bubble

The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.

Physical Pendulum

Physical Pendulum

When a rigid body is hanging freely from a fixed pivot point and is displaced, it oscillates similar to a simple pendulum and is known as a physical pendulum. The period and angular frequency of a physical pendulum are obtained by using the small-angle approximation and drawing parallels with a spring-mass system. The small-angle approximation (sinθ=θ) is valid up to about 14°.
When dealing with complicated systems, the mass moment of inertia is an important parameter, as it...

Frequency of Spring-Mass System

Frequency of Spring-Mass System

One interesting characteristic of the simple harmonic motion (SHM) of an object attached to a spring is that the angular frequency, and the period and frequency of the motion, depend only on the mass and the force constant of the spring, and not on other factors such as the amplitude of the motion or initial conditions. We can use the equations of motion and Newton's second law to find the angular frequency, frequency, and period.
Consider a block on a spring on a frictionless surface. There...

Simple Pendulum

Simple Pendulum

A simple pendulum consists of a small diameter ball suspended from a string, which has negligible mass but is strong enough to not stretch. In our daily life, pendulums have many uses, such as in clocks, on a swing set, and on a sinker on a fishing line.
The period of a simple pendulum depends on two factors: its length and the acceleration due to gravity. The period is completely independent of any other factors, such as mass or maximum displacement. For small displacements, a pendulum is...

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

You might also read

Related Articles

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

Sort by

Same author

Designing logic gates using active particles.

Physical review. E·2026

Same author

Differentiation of Back-and-Forth Motion in Self-Propulsion Emerging via Complex Formation.

Langmuir : the ACS journal of surfaces and colloids·2025

Same author

Photorelease of Nitric Oxide (NO) in Mono- and Bimetallic Ruthenium Nitrosyl Complexes: A Photokinetic Investigation with a Two-Step Model.

Inorganic chemistry·2024

Same author

Oscillatory Motion of an Organic Droplet Reflecting a Reaction Scheme.

The journal of physical chemistry letters·2023

Same author

Enhancing search efficiency through diffusive echo.

The Journal of chemical physics·2022

Same author

Photoswitchable assembly of long-lived azobenzenes in water using visible light.

Journal of colloid and interface science·2022

Search research articles

Related Experiment Video

Updated: May 6, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

Mass-spring model of a self-pulsating drop.

Charles Antoine¹, Véronique Pimienta

¹Laboratoire de Physique Théorique de la Matière Condensée, Université Pierre et Marie Curie , 4 place Jussieu, 75005 Paris, France.

Langmuir : the ACS Journal of Surfaces and Colloids

|November 9, 2013

Summary

We developed a simple mechanical model to explain the pulsating behavior of sessile drops. This model captures the complex dynamics of liquid/liquid systems, aiding in understanding drop evaporation and dissolution phenomena.

More Related Videos

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Published on: February 17, 2019

Related Experiment Videos

Last Updated: May 6, 2026

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

High Speed Droplet-based Delivery System for Passive Pumping in Microfluidic Devices

Published on: September 2, 2009

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Impacts of Free-falling Spheres on a Deep Liquid Pool with Altered Fluid and Impactor Surface Conditions

Published on: February 17, 2019

Area of Science:

Fluid dynamics
Non-equilibrium thermodynamics
Physical chemistry

Background:

Self-pulsating sessile drops exhibit complex dynamics not fully understood.
Simple models are needed to elucidate the mechanisms behind these far-from-equilibrium liquid/liquid systems.

Purpose of the Study:

To present a simple mass-spring mechanical model for drop pulsations.
To explain the periodic rim breakup observed in dissolving dichloromethane drops.

Main Methods:

Developed a mass-spring mechanical model.
Introduced an effective time-dependent spreading coefficient.
Compared model predictions with experimental observations.

Main Results:

The model successfully replicates the regular drop pulsations.
Rapid spreading phases of pulsations are explained.
Periodic rim breakup is accounted for by the model.

Conclusions:

The mass-spring model provides a simplified yet effective framework for understanding sessile drop pulsations.
The time-dependent spreading coefficient effectively integrates various physical forces influencing drop dynamics.
Further research can build upon this model to explore more complex liquid/liquid systems.