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You will find our physic projects in the following categories
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Material Physics
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Environment-friendly and Cost-efficient Production of Functional Metal Oxide Films
High-quality functional metal oxide films and metal oxide nanostructures are produced surprisingly at ambient pressure using a budget-priced Metalorganic Aerosol Deposition technique. This technique is well suitable for continuous, e.g. reel-to-reel processes. Additional outstanding feature, notably in contrast to MOCVD, is the possibility to choose environment-friendly and budget-priced precursors.
Applications: High temperature superconductors, Magnetometers for medical devices, LED for general illumination, Biosensor devices.
Projekt Summary (PDF)
[more...]
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Plasma Technology
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The New Atmospheric Pressure Plasma Source - PlasmaCone®
The PlasmaCone® is a new atmospheric pressure plasma source with one essential unique technical feature, but with lots of new applications.
Projekt Summary (PDF)
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Treatment of bulk material by plasma
Treatment of bulk materials by cold plasma on industrial lines with high flow-rates. The cold plasma will reduce the surface tension of the chips and cleaning and activating the chips.
Projekt Summary (PDF)
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This invention is developed for non contact treatment of surfaces of different materials to get more adhesive power between a material and a coating.
Projekt Summary (PDF)
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Optic
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Stabilization of Miniaturized Intracavity Frequency-Doubled Lasers
The so-called 'green problem' became relevant with the need to miniaturize cw intracavity frequency doubled solid state lasers. One can see the green problem as high frequency (MHz-range), high contrast (#I / I> 0,6) intensity modulation.
There are mainly two standard solutions:
a) using a long resonator – which means, that you must not miniaturize the laser – results in using as many longitudinal modes as mode hopping does not cause significant intensity noise.
b) forcing a single mode operation, which is accompanied by significant loss of intensity.
The Georg-August-Universität of Göttingen proposes a method based on a multiple time delayed feedback control. A signal generated from intensities of the fundamental modes is fed back to the pump power. The result is a highly stable output (peak-to-peak better 1%) with nearly no loss of intensity. Such stable cw-lasers with high beam quality are used in measurement and medicin, but in RGB projection systems and holografic displays. Now these systems can be miniaturized.
Projekt Summary (PDF)
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Integrating Diffractive Optical Elements in Fibre Endfaces
We offer a new and economical procedure on the basis of a self-supporting, in two dimensions structured masks for integrating Diffractive Optical Elements in Fibre Endfaces.
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Improved Detector Head for Spectrometric Devices
Geman Patent 102008009599 for optical detector head for spectrometric measurements of NIR-remission spectra with - independent on temperature - minimized internal reflexion.
Projekt Summary (PDF)
[more...]
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Laser Technology
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Stabilization of Miniaturized Intracavity Frequency-Doubled Lasers
The so-called 'green problem' became relevant with the need to miniaturize cw intracavity frequency doubled solid state lasers. One can see the green problem as high frequency (MHz-range), high contrast (#I / I> 0,6) intensity modulation.
There are mainly two standard solutions:
a) using a long resonator – which means, that you must not miniaturize the laser – results in using as many longitudinal modes as mode hopping does not cause significant intensity noise.
b) forcing a single mode operation, which is accompanied by significant loss of intensity.
The Georg-August-Universität of Göttingen proposes a method based on a multiple time delayed feedback control. A signal generated from intensities of the fundamental modes is fed back to the pump power. The result is a highly stable output (peak-to-peak better 1%) with nearly no loss of intensity. Such stable cw-lasers with high beam quality are used in measurement and medicin, but in RGB projection systems and holografic displays. Now these systems can be miniaturized.
Projekt Summary (PDF)
[more...]
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Thin Film Coating Technologies
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The New Atmospheric Pressure Plasma Source - PlasmaCone®
The PlasmaCone® is a new atmospheric pressure plasma source with one essential unique technical feature, but with lots of new applications.
Projekt Summary (PDF)
[more...]
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Environment-friendly and Cost-efficient Production of Functional Metal Oxide Films
High-quality functional metal oxide films and metal oxide nanostructures are produced surprisingly at ambient pressure using a budget-priced Metalorganic Aerosol Deposition technique. This technique is well suitable for continuous, e.g. reel-to-reel processes. Additional outstanding feature, notably in contrast to MOCVD, is the possibility to choose environment-friendly and budget-priced precursors.
Applications: High temperature superconductors, Magnetometers for medical devices, LED for general illumination, Biosensor devices.
Projekt Summary (PDF)
[more...]
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Measurement Technology
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The New Atmospheric Pressure Plasma Source - PlasmaCone®
The PlasmaCone® is a new atmospheric pressure plasma source with one essential unique technical feature, but with lots of new applications.
Projekt Summary (PDF)
[more...]
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Novel technology to predict iron clogging in water and hydraulic systems
The accumulation of bulky aggregates of iron precipitates in water is a common and natural occurring problem, particularly in hydraulic systems and wells, causing great damage on the system if this phenomenon has not been taken seriously. Scientists at the Leuphana University of Lüneburg have developed a novel method to predict iron clogging in water and hydraulic systems. This new sensor technology is based on electrochemical measurements of ferrous iron activities and can be used as a basis to estimate the potential of ferric hydroxide build-up.
Projekt Summary (PDF)
[more...]
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Improved Detector Head for Spectrometric Devices
Geman Patent 102008009599 for optical detector head for spectrometric measurements of NIR-remission spectra with - independent on temperature - minimized internal reflexion.
Projekt Summary (PDF)
[more...]
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Stabilization of Miniaturized Intracavity Frequency-Doubled Lasers
The so-called 'green problem' became relevant with the need to miniaturize cw intracavity frequency doubled solid state lasers. One can see the green problem as high frequency (MHz-range), high contrast (#I / I> 0,6) intensity modulation.
There are mainly two standard solutions:
a) using a long resonator – which means, that you must not miniaturize the laser – results in using as many longitudinal modes as mode hopping does not cause significant intensity noise.
b) forcing a single mode operation, which is accompanied by significant loss of intensity.
The Georg-August-Universität of Göttingen proposes a method based on a multiple time delayed feedback control. A signal generated from intensities of the fundamental modes is fed back to the pump power. The result is a highly stable output (peak-to-peak better 1%) with nearly no loss of intensity. Such stable cw-lasers with high beam quality are used in measurement and medicin, but in RGB projection systems and holografic displays. Now these systems can be miniaturized.
Projekt Summary (PDF)
[more...]
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Size Selective Real-Time Gravimetry of Small Airborne Particles
The need for environmental monitoring becomes more and more evident on the background of new knowledge concerning noxious effects of fine and particularly ultra fine particulate matter. But in fact measuring the mass of particular matter in gases or air is very difficult.
Optical measurement procedures often are adapted to known compositions of particular matter or well suited for particle counting. Truly gravimetric procedures are expensiv. The related instruments need routine maintenance. Only very special instruments can perform real-time measurements.
At the department of physical chemistry of the University of Göttingen there is a real-time cascade impactor in use. It performs high sensitive, strictly gravimetric measurements. It is service reduced with the potential to become maintenance-free.
Projekt Summary (PDF)
[more...]
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Environmental Monitoring
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Novel technology to predict iron clogging in water and hydraulic systems
The accumulation of bulky aggregates of iron precipitates in water is a common and natural occurring problem, particularly in hydraulic systems and wells, causing great damage on the system if this phenomenon has not been taken seriously. Scientists at the Leuphana University of Lüneburg have developed a novel method to predict iron clogging in water and hydraulic systems. This new sensor technology is based on electrochemical measurements of ferrous iron activities and can be used as a basis to estimate the potential of ferric hydroxide build-up.
Projekt Summary (PDF)
[more...]
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This invention is developed for non contact treatment of surfaces of different materials to get more adhesive power between a material and a coating.
Projekt Summary (PDF)
[more...]
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Size Selective Real-Time Gravimetry of Small Airborne Particles
The need for environmental monitoring becomes more and more evident on the background of new knowledge concerning noxious effects of fine and particularly ultra fine particulate matter. But in fact measuring the mass of particular matter in gases or air is very difficult.
Optical measurement procedures often are adapted to known compositions of particular matter or well suited for particle counting. Truly gravimetric procedures are expensiv. The related instruments need routine maintenance. Only very special instruments can perform real-time measurements.
At the department of physical chemistry of the University of Göttingen there is a real-time cascade impactor in use. It performs high sensitive, strictly gravimetric measurements. It is service reduced with the potential to become maintenance-free.
Projekt Summary (PDF)
[more...]
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Construction Technique
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This invention is developed for non contact treatment of surfaces of different materials to get more adhesive power between a material and a coating.
Projekt Summary (PDF)
[more...]
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Process Technology
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The New Atmospheric Pressure Plasma Source - PlasmaCone®
The PlasmaCone® is a new atmospheric pressure plasma source with one essential unique technical feature, but with lots of new applications.
Projekt Summary (PDF)
[more...]
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Efficient Digester with Integrated Heating and Stirring Device
Optimization of biogasprodction with regard to process and to costs is proposed by using integrated heating and stirring device (iHSD).
[more...]
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