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Plasma Sensor - Planar sensor with stacked structure for measuring plasma parameters


Abstract

The novel plasma sensor is based on the so-called active plasma resonance spectroscopy, whereby the sensor itself is flush-mounted in the wall of the reactor and thus does not affect the process. An integrated balun allows the sensor to be powered by a simple coaxial cable.


Background

Plasmas are used in many technical fields. For instance, plasma assisted technologies are used  to modify, clean or coat surfaces. Essential for the quality of such a process is the knowledge of the plasma state. Here, the plasma parameters are not only measured, but also used for the control of the process. Existing methods do not meet many industrial requirements and are complex and costly.


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Solution

The novel plasma sensor is based on the so-called active plasma resonance spectroscopy, whereby the sensor itself is flush-mounted in the wall of the reactor and thus does not affect the process. An integrated balun allows the sensor to be powered by a simple coaxial cable.


Advantages

  • Simple setup
  • Easy installation in existing systems
  • Robust
  • Cost-efficient
  • Minimal influence on the plasma
  • Insensitive against additional dielectric coatings during process monitoring
  • Integrable into plasma control
  • High-temperature resistant realization is possible

Scope of application

The plasma sensor can be used in most industrial plasma processes as long as no conductive layers are deposited. The sensor can measure the plasma parameters, in particular the plasma electron frequency, and provide the values for an active control and thus significantly improve the quality of the process. Since the sensor is integrated into the reactor wall, no great technical effort for installation is necessary.


Service

On behalf of the Ruhr-Universität Bochum, we offer interested companies the opportunity to license and develop the technology.


PROvendis GmbH

Dipl.-Ing. Andreas Brennemann
+49.208 94105-33
ab@provendis.info
www.provendis.info
Address
Schloßstr. 11-15
45468 Mülheim an der Ruhr



Development status

Demonstration model


Keywords

Plasmasensor, Frequenz, Dichte, Plasma, Messung, Sensor, Regelung, Plasma sensor, frequency, density, measurement, control

Offer at Providers website


Contact | Main Office

TransferAllianz e. V.
Christiane Bach-Kaienburg
(Managing Director)

c/o PROvendis GmbH
Schloßstr. 11-15
D-45468 Mülheim an der Ruhr