Pressure-independent point in current-voltage characteristics of coplanar electrode microplasma devices operated in neon
- School of Physics, Shandong University, Jinan 250100 (China)
- School of Information Science and Engineering, Shandong University, Jinan 250100 (China)
- Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049 (China)
We introduce the idea of a pressure-independent point (PIP) in a group of current-voltage curves for the coplanar electrode microplasma device (CEMPD) at neon pressures ranging from 15 to 95 kPa. We studied four samples of CEMPDs with different sizes of the microcavity and observed the PIP phenomenon for each sample. The PIP voltage depends on the area of the microcavity and is independent of the height of the microcavity. The PIP discharge current, I{sub PIP}, is proportional to the volume (Vol) of the microcavity and can be expressed by the formula I{sub PIP}=I{sub PIP0}+DxVol. For our samples, I{sub PIP0} (the discharge current when Vol is zero) is about zero and D (discharge current density) is about 3.95 mA mm{sup -3}. The error in D is 0.411 mA mm{sup -3} (less than 11% of D). When the CEMPD operates at V{sub PIP}, the discharge current is quite stable under different neon pressures.
- OSTI ID:
- 21347437
- Journal Information:
- Applied Physics Letters, Vol. 96, Issue 19; Other Information: DOI: 10.1063/1.3428789; (c) 2010 American Institute of Physics; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Confinement of nonequilibrium plasmas in microcavities with diamond or circular cross sections: Sealed arrays of Al/Al{sub 2}O{sub 3}/glass microplasma devices with radiating areas above 20 cm{sup 2}
Two-dimensional simulation of ac-driven microplasmas confined to 100-300 {mu}m diameter cylindrical microcavities in dielectric barrier devices