A5083302336- Fluid Dynamics and Turbulent Flows
- Neuroscience and Neural Engineering
- EEG and Brain-Computer Interfaces
- Geophysics and Sensor Technology
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Photoreceptor and optogenetics research
- Fluid Dynamics and Vibration Analysis
- Aerodynamics and Fluid Dynamics Research
- Genetics, Bioinformatics, and Biomedical Research
- Quantum Information and Cryptography
- Advancements in Semiconductor Devices and Circuit Design
- Meteorological Phenomena and Simulations
- Plasma and Flow Control in Aerodynamics
- Magnetic confinement fusion research
- Tribology and Lubrication Engineering
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Advanced MRI Techniques and Applications
- Iterative Learning Control Systems
- Magnetic Field Sensors Techniques
- CCD and CMOS Imaging Sensors
Forschungszentrum Jülich
2013-2024
Simultaneous stimulation and recording of retinal nerve cells with penetrating three dimensional multi-electrode arrays (MEA) on a localized area is demanding challenge in next generation retina implant research. Within the scope this research we developed device to stimulate network bi-polar record ganglion slight time gap overcome long dead times switching artifacts common stimulation- systems. The contains four channel stimulator capable pushing arbitrary charges into tissue 16 commercial...
Abstract The PET scanner pheno is a system dedicated for plant research developed and used phenotyping studies at the Research Center in Jülich. detectors consist of LYSO scintillators Philips digital silicon photomultipliers. A central processing board collects their data transfers them through USB-3 connection to acquisition server. restricts maximum output rate 380 MB/s, which requires controlled dropping on order allow measurements with activities that would exceed this limit. Presently...
This work discusses the use of analog light barrier and Hall sensors for waveform control in an actuator system turbulence research. The shall produce up to 80 Hz, mm wavelength running surface wave with amplitudes from 50 1000 μm. To ensure both, amplitude, algorithm requires real time amplitude measurements all 20 actuators. Techniques are described extend limited measurement range barriers reduce impact mechanical disturbances on process by placement compensation. Also a small bar...
To understand the neural processes within retina cell layers recent implant research focusses on bidirectional communication with bi-polar and ganglion cells in in-vitro retinal tissue. In order to enable this we had developed a front-end stimulate record slight time gap only thus avoiding long recording dead times. ease experiments front-end, versatile user optimized embedded data acquisition device, named iNODE5. This can be configured using LabVIEW based graphical interface. We adapted...
The development of robust methods to significantly reduce frictional resistance the turbulent boundary layer involves wind tunnel experiments with transversal waves on an extended aluminum surface. For this purpose actuation system generate by phase-shifted, uniformly distributed electromagnetic actuators has been developed. Each these are mechanically coupled surface and driven FPGA. They adapt change wave parameters automatically calculated smooth signal transitions. One transitions is...
This work discusses classic feedback control (PD) and Iterative Learning Control (ILC) applied to a Lorentz force based actuator system for turbulence research. The goal is precise reliable generation of transversal waves on an aluminum surface in wind tunnel experiments. For research unsteady inflow conditions wave parameters have be adjustable quickly within given ranges (50 135 Hz frequency, 260 500 μm amplitude, 80 160 mm wavelength). We present results simultaneous individual actuators...
First performance measurement results of a UHF-MRI compatible BrainPET insert for multimodal and multiparametric neuroscientific imaging applications have been obtained. The BrainPET-7T Insert was built human 7T MRI scanner from Siemens (MAGNETOM Terra) comprises total 8 UHF-MR PET modules [1]. inner diameter the axial FOV are 24.8 38.85 cm, respectively [2] attached PET-compatible channel transmit/receive coil allows <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
This work deals with the development of a control approach for an actuator system external flow research. It combines classic proportional-integral-(PI)-control, single frequency dynamic decoupling and iterative learning to achieve traveling surface waves 80 108 Hz, 100 375 μm amplitude 160 mm wavelength on 300x400 glass fiber reinforced plastic sheet. We also present figures merit quality wave produced.