Related Experiment Video
Updated: May 6, 2026
08:41
Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions
Published on: September 7, 2018
7.9K
Direct generation of electric currents from flowing neutral ionic solutions
1Institute of Chemistry, and Institute of Theoretical Physics, Chinese Academy of Sciences, No. 2 North Zhongguancun 1st Road, Beijing 100190, China.
Thescientificworldjournal
|November 5, 2013
Summary
Researchers developed a novel method to generate electric currents from flowing ionic solutions under high pressure. Differences in ion atomic mass cause varied flow velocities, enabling potential applications in detecting atomic masses and pressure.
Area of Science:
- Electrochemistry
- Materials Science
- Physical Chemistry
Background:
- Generating electric currents typically involves complex setups.
- Ionic solutions are widely studied for their conductive properties.
Purpose of the Study:
- To discover a new method for generating electric currents.
- To explore the potential of using pressure-induced ionic flow for detection.
Main Methods:
- Applying high pressure to neutral ionic solutions.
- Observing the flow of cations and anions with differing atomic masses.
- Measuring the generated electric currents.
Main Results:
- Successfully generated electric currents directly from high pressure-induced flow.
- Demonstrated that differing atomic masses lead to different ion flow velocities.
- Observed high sensitivity of the generated current to applied pressure strength.
Conclusions:
- A novel method for electric current generation via pressure-induced ionic flow has been established.
- The differential flow of ions with varying atomic masses is the key mechanism.
- This technique shows potential for detecting atomic masses and pressures.
Related Concept Videos
02:36Electromotive Force
23.2K
Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical charge is defined as an electric current. When electrons move through a wire, they generate an electric current. It can be recalled that in a redox reaction, electrons are lost and gained. In the spontaneous redox reaction of zinc with copper, when zinc is immersed in a copper ion solution, a transfer of electrons from one substance to...
23.2K
01:02Electromotive Force
5.9K
Electromotive force (emf) is the force that causes current to flow from a higher to a lower potential. The term "electromotive force" is used for historical reasons, even though emf is not a force at all.
Any circuit with a constant current must contain an emf-producing source. Examples of emf sources include batteries, electric generators, solar cells, thermocouples, and fuel cells. All these sources transform energy of some kind (mechanical, chemical, thermal, and so on)...
Any circuit with a constant current must contain an emf-producing source. Examples of emf sources include batteries, electric generators, solar cells, thermocouples, and fuel cells. All these sources transform energy of some kind (mechanical, chemical, thermal, and so on)...
5.9K
01:28Electrochemical Cells
424
Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not...
424
02:47Voltaic/Galvanic Cells
45.6K
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
45.6K
01:24Electrochemical Systems
182
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,...
182
01:15Charging Conductors By Induction
7.8K
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...
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...
7.8K