Related Experiment Video
Updated: Dec 27, 2025
09:55
Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
Published on: June 23, 2017
8.5K
A novel dielectric barrier discharge instrument with asymmetrical electrodes for generating different patterns
Caixia Li1, Lifang Dong1, Jianyu Feng1
1College of Physics Science and Technology, Hebei University, Baoding 071002, China.
The Review of Scientific Instruments
|March 2, 2020
Summary
This study introduces a new dielectric barrier discharge (DBD) instrument with asymmetrical electrodes. The novel setup allows for simultaneous formation of two distinct discharge patterns, offering insights into charge behavior.
Area of Science:
- Plasma Physics
- Electrical Engineering
Background:
- Dielectric barrier discharges (DBD) are widely used in various industrial applications.
- Understanding the spatio-temporal characteristics of DBDs is crucial for optimizing their performance.
- Asymmetrical electrode configurations can lead to complex discharge patterns.
Purpose of the Study:
- To investigate a novel dielectric barrier discharge (DBD) instrument with asymmetrical electrodes.
- To explore the simultaneous formation of two different discharge patterns within the same discharge gap.
- To analyze the spatio-temporal characteristics of these patterns under specific boundary conditions.
Main Methods:
- Development of a novel DBD instrument featuring three water electrodes: one large and two small, arranged asymmetrically.
- Incorporation of a high-voltage diode to control power application to one of the small electrodes.
- Investigation of discharge patterns within a boundary defined by two connected circles.
- Spatio-temporal analysis of the discharge patterns under varying voltage conditions.
Main Results:
- The novel DBD instrument successfully generated two distinct discharge patterns simultaneously in different regions of the discharge gap.
- Despite power application to only one area during a half-period due to the high-voltage photodiode, discharge occurred in both areas.
- The spatio-temporal characteristics of these patterns were studied within the defined circular boundary.
- The study observed that the discharge occurs in both areas in each half period of the applied voltage.
Conclusions:
- The asymmetrical DBD instrument provides a unique platform for studying complex discharge phenomena.
- The findings demonstrate the ability to control and observe distinct discharge patterns concurrently.
- This research offers potential applications for understanding discharge mechanisms and the behavior of positive and negative charges.
Related Concept Videos
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
554
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
554
01:22Atomic Emission Spectroscopy: Instrumentation
1.1K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.1K
01:31Dielectric Polarization in a Capacitor
5.8K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
5.8K