A5071176039- Atomic and Subatomic Physics Research
- Physics of Superconductivity and Magnetism
- Non-Destructive Testing Techniques
- Microfluidic and Bio-sensing Technologies
- Characterization and Applications of Magnetic Nanoparticles
- Magnetic Field Sensors Techniques
- Magnetic Properties and Applications
- Geomagnetism and Paleomagnetism Studies
- Advanced NMR Techniques and Applications
- Magnetic and transport properties of perovskites and related materials
- Quantum and electron transport phenomena
- Advanced MRI Techniques and Applications
- NMR spectroscopy and applications
- Advanced Chemical Physics Studies
- Biosensors and Analytical Detection
- Magnetic properties of thin films
- Quantum, superfluid, helium dynamics
- Mechanical stress and fatigue analysis
- Spectroscopy and Quantum Chemical Studies
- Microfluidic and Capillary Electrophoresis Applications
- Advanced biosensing and bioanalysis techniques
- Ion-surface interactions and analysis
- Mass Spectrometry Techniques and Applications
- Advanced Electrical Measurement Techniques
- Geophysical Methods and Applications
Forschungszentrum Jülich
2016-2025
FH Aachen
1971-2024
Max Planck Institute for Nuclear Physics
2008-2017
BioElectronics (United States)
2009-2016
Stadtwerke Jülich (Germany)
2001-2016
National University of Defense Technology
2015
Grunberger Diabetes Institute
2014
Glasgow Life
2007-2008
Leipzig University
1955-1999
GAIKER Technology Centre
1998
Optical second-harmonic and sum-frequency spectra of clean oxidized Si(100) Si(111) samples reveal a strong resonance band at 3.3 eV photon energy. It is concluded that the arises from direct transitions between valence conduction states in few monolayers strained silicon Si-${\mathrm{SiO}}_{2}$ interface selvedge reconstructed surfaces.
Laser-induced breakdown spectroscopy has been applied to polymer samples in order investigate the possibility of using this method for identification different materials. The plasma emission spectra high-density polyethylene (HDPE), low-density (LDPE), polyvinyl chloride (PVC), terephthalate (PET), and polypropylene (PP) have studied. Spectral features measured—for example, 725.7 nm chlorine line, 486.13 mm H β 247.86 carbon line—whose evaluation with neural networks permits accuracies...
Pulsed field threshold ionization leads to a vibrationally resolved spectrum of the X̃ 2E1g state benzene cation. It is further used investigate state-selective dissociation benzene–Ar+ complex. Exclusive detection ions with resolution <9 cm−1 achieved by kinetic energy analysis in reflectron mass spectrometer.
Delayed pulsed field threshold ionization of clusters excited to high long-lived Rydberg states is used study their dissociation behavior. Benzene–Ar and benzene–Kr dimers are by resonance enhanced two-photon levels close various thresholds. The ionized ions monitored separated from the non-energy-selected in a reflecting mass spectrometer with resolution. appearance at daughter ion indicates onset process. Daughter first observed for 16161(3/2) level two investigated dimers. This leads an...
Using the charge neutrality point promises low-noise graphene electronic sensors.
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, tune-defined as number of precessions per turn-is given by ν(s)=γG (γ Lorentz factor, G gyromagnetic anomaly). At 970 MeV/c, deuteron spins coherently precess at a frequency ≈120 kHz in Cooler Synchrotron COSY. The deduced from up-down asymmetry deuteron-carbon scattering. time interval 2.6 s, was determined with precision order 10^{-8}, 1×10^{-10} for continuous 100 s accelerator cycle. This...
We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of magnetic storage ring (COSY). This long spin coherence time is maintained through combination bunching, electron cooling, sextupole field corrections, and suppression collective effects current limits. record required for search an intrinsic electric dipole moment on at statistical sensitivity level approaching 10^{-29} e cm.
Slow metastable fragmentation of benzene/toluene and benzene/para-difluorobenzene clusters is observed in a newly developed linear reflectron time-of-flight mass spectrometer after two-photon ionization. The breakdown the intensity with decreasing energy measured yields appearance potential for main dissociation channels homo- heterodimers. Based on these values, energies neutral dimers are obtained shown to be consistent changes polarizability dipole moment components. In addition, from...
ABSTRACT Plant pathogens cause major economic losses in the agricultural industry because late detection delays implementation of measures that can prevent their dissemination. Sensitive and robust procedures for rapid plant are therefore required to reduce yield use expensive, environmentally damaging chemicals. Here we describe a simple portable system viral infected plants based on immunofiltration, subsequent magnetic detection, quantification magnetically labeled virus particles....
As a powerful and versatile scientific instrument, magnetic tweezers have been widely used in biophysical research areas, such as mechanical cell properties single molecule manipulation. If one wants to steer bead position, the nonlinearity of strong position dependence field most lead quite challenge their control. In this article, we report multi-pole electromagnetic with high permeability cores yielding force output, good maneuverability, flexible design. For modeling, adopted piece-wise...
We report on a measurement of the $CP$-violating permanent electric dipole moment (EDM) neutral $^{129}\mathrm{Xe}$ atom. Our experimental approach is based detection free precession co-located nuclear spin-polarized $^{3}\mathrm{He}$ and samples. The EDM sensitivity benefits strongly from long spin coherence times several hours achieved in diluted gases homogeneous weak magnetic fields about 400 nT. A finite indicated by change frequency, as an field periodically reversed with respect to...
A novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) emerged in China December 2019, causing an ongoing, rapidly spreading global pandemic. Worldwide, vaccination is now expected to provide containment of the virus, resulting antibody-mediated immunity. To verify this, serological antibody assays qualitatively as well quantitatively depicting amount generated antibodies are great importance. Currently available test methods either laboratory based or do not have ability...
In this Letter, the ambipolar properties of an electrolyte-gated graphene field-effect transistor (GFET) have been explored to fabricate frequency-doubling biochemical sensor devices. By biasing GFETs in a common-source configuration, input sinusoidal voltage at frequency f applied electrolyte gate can be rectified wave 2f drain electrode. The extraordinary high carrier mobility and strong coupling provide doubler unprecedented unity gain, as well detection limit ∼4 pM for 11-mer single...
The misuse of antibiotics as well incorrect dosage or insufficient time for detoxification can result in the presence pharmacologically active molecules fresh milk. Hence, many countries, commercially available milk has to be tested with immunological, chromatographic microbiological analytical methods avoid consumption antibiotic residues. Here a novel, sensitive and portable assay setup detection quantification penicillin kanamycin whole fat (WFM) based on competitive magnetic...