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

The Electrical Double Layer01:30

The Electrical Double Layer

106
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
106
Continuous Charge Distributions01:17

Continuous Charge Distributions

8.7K
Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
8.7K
Colloidal precipitates01:09

Colloidal precipitates

6.7K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
6.7K
Electrochemical Systems01:24

Electrochemical Systems

51
Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution,...
51
Charging Conductors By Induction01:15

Charging Conductors By Induction

9.8K
The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
9.8K
The Colloidal State01:29

The Colloidal State

83
The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called...
83

You might also read

Related Articles

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

Sort by
Same author

Optimal Migration of a Combination of Saturated and Monounsaturated Fatty Acids in Droplets as an Evolutionary Approach.

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

Class of Cross-Linkers That Self-Extract via Thermodynamically Driven Phase Transfer for Energy-Efficient Recycling.

Journal of the American Chemical Society·2025
Same author

Amorphous polymers separate small organic molecules with switchable selective states.

Nature communications·2025
Same author

Plug Flow: Generating Renewable Electricity with Water from Nature by Breaking the Limit of Debye Length.

ACS central science·2025
Same author

Light-driven actuator with high output power density inspired by insect wings.

Nature materials·2025
Same author

Static charge is an ionic molecular fragment.

Nature communications·2024
Same journal

Efficient Syngas Photoproduction Enabled by Electronic Engineering of Co-Immobilized Imine COFs.

Angewandte Chemie (International ed. in English)·2026
Same journal

Pathway Controlled Phase Separation of Minimal Building Blocks Utilizing a Dissociative Chemical Transformation.

Angewandte Chemie (International ed. in English)·2026
Same journal

Interaction Hierarchy and Polymorphic Structure-Property Dynamics in Luminescent Molecular Crystals.

Angewandte Chemie (International ed. in English)·2026
Same journal

The Role of Zn-Hf Site Proximity and Oxygen Vacancies for Methanol Formation Over ZnHfO<sub>x</sub> Catalysts Under CO<sub>2</sub> Hydrogenation Conditions.

Angewandte Chemie (International ed. in English)·2026
Same journal

Breaking the Linear Scaling Relationship: Bioinspired Electronic Coupling in S-Bridged Fe-Fe Dual Sites for Efficient Oxygen Reduction.

Angewandte Chemie (International ed. in English)·2026
Same journal

Programming Bio-Bio Electronic Interfaces for Light-Driven Interspecies Electron Transfer.

Angewandte Chemie (International ed. in English)·2026
See all related articles

Related Experiment Video

Updated: Mar 17, 2026

Glass-Based Devices to Generate Drops and Emulsions
08:45

Glass-Based Devices to Generate Drops and Emulsions

Published on: April 5, 2022

3.3K

Solid-to-Liquid Charge Transfer for Generating Droplets with Tunable Charge.

Yajuan Sun1, Xu Huang1, Siowling Soh2

  • 1Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.

Angewandte Chemie (International Ed. in English)
|July 16, 2016
PubMed
Summary
This summary is machine-generated.

Researchers developed a new, simple method to charge liquid droplets using static electricity from solid surfaces. This technique avoids high-voltage power supplies and allows for tunable droplet charge for various applications.

Keywords:
charge transfercontact electrificationdroplet manipulationinterfacessurface chemistry

More Related Videos

Safe Experimentation in Optical Levitation of Charged Droplets Using Remote Labs
09:09

Safe Experimentation in Optical Levitation of Charged Droplets Using Remote Labs

Published on: January 10, 2019

8.4K
Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices
11:08

Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices

Published on: July 3, 2018

8.3K

Related Experiment Videos

Last Updated: Mar 17, 2026

Glass-Based Devices to Generate Drops and Emulsions
08:45

Glass-Based Devices to Generate Drops and Emulsions

Published on: April 5, 2022

3.3K
Safe Experimentation in Optical Levitation of Charged Droplets Using Remote Labs
09:09

Safe Experimentation in Optical Levitation of Charged Droplets Using Remote Labs

Published on: January 10, 2019

8.4K
Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices
11:08

Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices

Published on: July 3, 2018

8.3K

Area of Science:

  • Electrostatics
  • Surface Science
  • Fluid Dynamics

Background:

  • Charged liquid droplets are crucial for applications like microfluidics and inkjet printing.
  • Traditional methods for charging droplets rely on high-voltage power supplies, which can be complex and costly.

Purpose of the Study:

  • To introduce a novel, equipment-free method for charging liquid droplets.
  • To demonstrate the transfer of charge from solid surfaces to liquid droplets via contact electrification.
  • To show that the charge on droplets can be continuously tuned.

Main Methods:

  • Charging an insulating solid surface using contact electrification by rubbing it against another material.
  • Allowing liquid droplets (specifically water) to flow over the charged solid surface.
  • Measuring the charge acquired by the liquid droplets.

Main Results:

  • Successfully demonstrated charge transfer from a solid surface to liquid droplets.
  • Achieved continuous tuning of droplet charge from positive to negative.
  • Generated sufficient charge for droplet manipulation, coalescence, and sorting.

Conclusions:

  • Contact electrification offers a simple, inexpensive, and versatile alternative for charging liquid droplets.
  • This method eliminates the need for external power supplies or complex equipment.
  • The technique is general and applicable to various liquid droplet manipulation tasks.