A5011007976- Atomic and Subatomic Physics Research
- Advanced Frequency and Time Standards
- Cold Atom Physics and Bose-Einstein Condensates
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- DNA and Nucleic Acid Chemistry
- Quantum, superfluid, helium dynamics
- Advanced biosensing and bioanalysis techniques
- Electrochemical sensors and biosensors
- RNA Interference and Gene Delivery
- Particle Detector Development and Performance
- Biochemical Analysis and Sensing Techniques
- Spectroscopy and Quantum Chemical Studies
- Radioactive Decay and Measurement Techniques
- Noncommutative and Quantum Gravity Theories
- Electrospun Nanofibers in Biomedical Applications
- Polymer Nanocomposites and Properties
- Nuclear Physics and Applications
- Polymer Nanocomposite Synthesis and Irradiation
- Superconducting and THz Device Technology
- Superconducting Materials and Applications
- Laser-Matter Interactions and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Genetic and phenotypic traits in livestock
- Atomic and Molecular Physics
Johannes Gutenberg University Mainz
2023-2024
Karamanoğlu Mehmetbey University
2013
Hebrew University of Jerusalem
2008
Middle East Technical University
2006
<title>Abstract</title> Coherent quantum transition spectroscopy is a powerful tool in quantum-sensing and metrology (1), information processing (2), accurate magnetometry (3), high-precision tests of the fundamental laws nature, searches for physics beyond Standard Model (4). In atomic measurements, it was applied with great success proton deuteron magnetic moment measurements (5), which culminated example MASER sub-parts per trillion resolution (6), record-constraints on neutron electric...
Tracking the changes: The switchable translocation of a nucleic acid strand with methylene blue (MB+) redox group on DNA track associated surface can be triggered by adenosine monophosphate (AMP, green) and deaminase (purple, see picture); latter converts AMP into inosine (orange). motion followed electrochemical, photo-electrochemical, fluorescence signals.
Änderungen auf der Spur: Die Translokation eines Nucleinsäurestrangs durch eine redoxaktive Methylenblau(MB+)-Gruppe einer oberflächengebundenen DNA-Bahn kann Adenosinmonophosphat (AMP, grün) und Adenosindesaminase (rot, siehe Bild) geschaltet werden; letztgenannte wandelt AMP in Inosinmonophosphat (orange) um. Bewegung Nucleinsäure lässt sich elektrochemisch, photoelektrochemisch anhand von Fluoreszenzsignalen verfolgen. Detailed facts of importance to specialist readers are published as...
We demonstrate a new temperature record for image-current mediated sympathetic cooling of single proton in cryogenic Penning trap by laser-cooled ^{9}Be^{+}. An axial mode 170 mK is reached, which 15-fold improvement compared to the previous best value. Our technique applicable any charged particle, so that measurements presented here constitute milestone toward next generation high-precision Penning-trap with exotic particles.
We demonstrate efficient subthermal cooling of the modified cyclotron mode a single trapped antiproton and reach particle temperatures T_{+}=E_{+}/k_{B} below 200 mK in preparation times shorter than 500 s. This corresponds to fastest resistive single-particle ever demonstrated. By particles such low energies, we detection spin transitions with an error rate <0.000 023, more 3 orders magnitude better previous best experiments. method has enormous impact on multi-Penning-trap experiments that...
The aim of this study was to prepare polyvinyl borate (PVB)/poly(methyl methacrylate) (PMMA) blend nanofibers by electrospinning process. Polyvinyl synthesized the condensation reaction alcohol and boric acid. FTIR analyses showed that boron atoms were found be integrated into polymer network. Blending PMMA with PVB decreased fiber diameter enhanced surface roughness PVB/PMMA nanofiber mats. water wetting property mats influenced roughness. composition highest content suitable for thermally...
We present the design and characterization of a cryogenic window based on an ultra-thin aluminized biaxially oriented polyethylene terephthalate foil at T < 10 K, which can withstand pressure difference larger than 1 bar leak rate <1×10-9 mbar l/s. Its thickness ∼1.7 μm makes it transparent to various types particles over broad energy range. To optimize transfer 100 keV antiprotons through window, we tested degrading properties different aluminum coated polymer foils thicknesses between 900...
Abstract The BASE collaboration at the antiproton decelerator/ELENA facility of CERN compares fundamental properties protons and antiprotons with ultra-high precision. Using advanced Penning trap systems, we have measured proton magnetic moments fractional uncertainties 300 parts in a trillion (p.p.t.) 1.5 billion (p.p.b.), respectively. combined measurements improve resolution previous best test that sector by more than factor 3000. Very recently, compared antiproton/proton charge-to-mass...
Currently, the world's only source of low-energy antiprotons is AD/ELENA facility located at CERN. To date, all precision measurements on single have been conducted this and provide stringent tests fundamental interactions their symmetries. However, magnetic field fluctuations from operation limit upcoming measurements. overcome limitation, we designed transportable antiproton trap system BASE-STEP to relocate laboratories with a calm environment. We anticipate that will facilitate enhanced...
We present a fluorescence-detection system for laser-cooled 9Be+ ions based on silicon photomultipliers (SiPMs) operated at 4 K and integrated into our cryogenic 1.9 T multi-Penning-trap system. Our approach enables fluorescence detection in hermetically sealed Penning-trap chamber with limited optical access, where state-of-the-art using telescope room temperature would be extremely difficult. characterize the properties of SiPM cryocooler K, we measure dark count rate below 1 s-1...
Abstract Dual‐type polymer electrochromic devices based on [(3‐thienyl)methylmethacrylate]‐ co ‐[ p ‐vinyl benzyloxy poly(ethylene oxide)]/polythiophene and thiophene‐capped oxide)/polythiophene ethylene dioxythiophene were constructed via electropolymerization. Spectroelectrochemistry, switching ability stability of the investigated using UV‐visible spectrophotometry cyclic voltammetry. These exhibit low voltages short times with reasonable under atmospheric conditions. Copyright © 2006...
Currently, the only worldwide source of low-energy antiprotons is AD/ELENA facility located at CERN. To date, all precision measurements on single have been conducted this and provide stringent tests fundamental interactions their symmetries. However, magnetic field fluctuations from operation limit upcoming measurements. overcome limitation, we designed transportable antiproton trap system BASE-STEP to relocate laboratories with a calm environment. We anticipate that will facilitate...
We present a fluorescence-detection system for laser-cooled 9Be+ ions based on silicon photomultipliers (SiPM) operated at 4 K and integrated into our cryogenic 1.9 T multi-Penning-trap system. Our approach enables fluorescence detection in hermetically-sealed Penning-trap chamber with limited optical access, where state-of-the-art using telescope room temperature would be extremely difficult. characterize the properties of SiPM cryocooler K, we measure dark count rate below 1/s efficiency...