Open Access

Letzte Einträge:
2019-08-20
12:53
OpenAccess [FZJ-2019-04308] Journal Article
et al
Diagnostics for plasma control – From ITER to DEMO
The plasma diagnostic and control (D&C) system for a future tokamak demonstration fusion reactor (DEMO) will have to provide reliable operation near technical and physics limits, while its front-end components will be subject to strong adverse effects within the nuclear and high temperature plasma environment. The ongoing developments for the ITER D&C system represent an important starting point for progressing towards DEMO. [...]
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ddc:530
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2019-08-20
11:29
OpenAccess [FZJ-2019-04305] Journal Article
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Emission of Fast Hydrogen Atoms in a Low Density Gas Discharge—The Most “Natural” Mirror Laboratory
Atoms 7(3), 81 - () [10.3390/atoms7030081]
In this work, we present a new application for the line shapes of emission induced by reflected hydrogen atoms. Optical properties of the solids in contact with the plasma could be effectively measured at the wavelength of Balmer lines: time-resolved measurements of reflectance and polarization properties of mirrors are performed using the wavelength separation of the direct and reflected signals [...]
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2019-08-16
10:41
OpenAccess [FZJ-2019-04286] Journal Article

The chiral biquadratic pair interaction
Magnetic interactions underpin a plethora of magnetic states of matter, hence playing a central role both in fundamental physics and for future spintronic and quantum computation devices. The Dzyaloshinskii–Moriya interaction, ${{\bf{D}}}_{{ij}}\cdot ({{\bf{S}}}_{i}\times {{\bf{S}}}_{j})$, being chiral and driven by relativistic effects, leads to the stabilization of highly-noncollinear spin textures such as skyrmions, which thanks to their topological nature are promising building blocks for magnetic data storage and processing elements. [...]
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2019-08-13
13:42
Embargoed OpenAccess [FZJ-2019-04231] Journal Article
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Deformation and dynamics of erythrocytes govern their traversal through microfluidic devices with a deterministic lateral displacement architecture
Biomicrofluidics 13(4), 044106 () [10.1063/1.5112033]
Deterministic lateral displacement (DLD) microfluidic devices promise versatile and precise processing of biological samples. However, this prospect has been realized so far only for rigid spherical particles and remains limited for biological cells due to the complexity of cell dynamics and deformation in microfluidic flow [...]
Published on 2019-07-26. Available in OpenAccess from 2020-07-26.: Download fulltextPDF Download fulltextPDF (PDFA);
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2019-08-13
12:23
OpenAccess [FZJ-2019-04214] Journal Article
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A Review of Post-combustion CO2 Capture Technologies from Coal-fired Power Plants
Reducing CO2 emissions has become a worldwide research topic. Of all the sources of CO2 emissions, power plants burning fossil fuels, especially coals, account for a very large portion. [...]
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2019-08-12
18:06
OpenAccess [FZJ-2019-04193] Journal Article
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Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
Science 365(6453), 570 - 574 () [10.1126/science.aax9743]
Quantum entanglement involving coherent superpositions of macroscopically distinct states is among the most striking features of quantum theory, but its realization is challenging because such states are extremely fragile. Using a programmable quantum simulator based on neutral atom arrays with interactions mediated by Rydberg states, we demonstrate the creation of “Schrödinger cat” states of the Greenberger-Horne-Zeilinger (GHZ) type with up to 20 qubits. [...]
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2019-08-12
14:33
Embargoed OpenAccess [FZJ-2019-04183] Journal Article

Influence of crystallographic structure on polarization reversal in polycrystalline ferroelectric/ferroelastic materials
Journal of applied physics 125(17), 174101 - () [10.1063/1.5081086]
Polarization reversal is the most fundamental physical process in ferroelectrics and directly or indirectly influences all functional properties of these materials. While this process is influenced by various intrinsic material’s properties and external boundary conditions, arguably one of the most dominant parameters is the material’s crystallographic structure [...]
Published on 2019-05-01. Available in OpenAccess from 2020-05-01.: Download fulltextPDF Download fulltextPDF (PDFA);
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2019-08-12
13:53
OpenAccess [FZJ-2019-04176] Journal Article
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Silicon and Iron as Resource-Efficient Anode Materials for Ambient-Temperature Metal-Air Batteries: A Review
Materials 12(13), 2134 - () [10.3390/ma12132134]
Metal-air batteries provide a most promising battery technology given their outstanding potential energy densities, which are desirable for both stationary and mobile applications in a “beyond lithium-ion” battery market. Silicon- and iron-air batteries underwent less research and development compared to lithium- and zinc-air batteries [...]
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2019-08-09
08:42
OpenAccess [FZJ-2019-04156] Journal Article
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Occurrence of Soil Fungi in Antarctic Pristine Environments
The presence of fungi in pristine Antarctic soils is of particular interest because of the diversity of this microbial group. However, the extreme conditions that coexist in Antarctica produce a strong selective pressure that could lead to the evolution of novel mechanisms for stress tolerance by indigenous microorganisms. [...]
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2019-08-09
08:37
OpenAccess [FZJ-2019-04153] Journal Article
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Improved isotopic model based on 15 N tracing and Rayleigh-type isotope fractionation for simulating differential sources of N 2 O emissions in a clay grassland soil
RationaleIsotopic signatures of N2O can help distinguish between two sources (fertiliser N or endogenous soil N) of N2O emissions. The contribution of each source to N2O emissions after N‐application is difficult to determine. [...]
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