23 research outputs found
The bandstructure of gold from many-body perturbation theory
The bandstructure of gold is calculated using many-body perturbation theory
(MBPT). Different approximations within the GW approach are considered.
Standard single shot G0W0 corrections shift the unoccupied bands up by ~0.2 eV
and the first sp-like occupied band down by ~0.4 eV, while leaving unchanged
the 5d occupied bands. Beyond G0W0, quasiparticle self-consistency on the
wavefunctions lowers the occupied 5d bands by 0.35 eV. Globally, many-body
effects achieve an opening of the interband gap (5d-6sp gap) of 0.35 to 0.75 eV
approaching the experimental results. Finally, the quasiparticle bandstructure
is compared to the one obtained by the widely used HSE (Heyd, Scuseria, and
Ernzerhof) hybrid functional
Synergies between interstellar dust and heliospheric science with an interstellar probe
We discuss the synergies between heliospheric and dust science, the open science questions, the technological endeavours, and programmatic aspects that are important to maintain or develop in the decade to come. In particular, we illustrate how we can use interstellar dust in the solar system as a tracer for the (dynamic) heliosphere properties, and emphasize the fairly unexplored, but potentially important science question of the role of cosmic dust in heliospheric and astrospheric physics. We show that an interstellar probe mission with a dedicated dust suite would bring unprecedented advances to interstellar dust research, and can also contribute â through measuring dust â to heliospheric science. This can, in particular, be done well if we work in synergy with other missions inside the solar system, thereby using multiple vantage points in space to measure the dust as it ârollsâ into the heliosphere. Such synergies between missions inside the solar system and far out are crucial for disentangling the spatially and temporally varying dust flow. Finally, we highlight the relevant instrumentation and its suitability for contributing to finding answers to the research questions
Synergies between interstellar dust and heliospheric science with an Interstellar Probe
We discuss the synergies between heliospheric and dust science, the open
science questions, the technological endeavors and programmatic aspects that
are important to maintain or develop in the decade to come. In particular, we
illustrate how we can use interstellar dust in the solar system as a tracer for
the (dynamic) heliosphere properties, and emphasize the fairly unexplored, but
potentially important science question of the role of cosmic dust in
heliospheric and astrospheric physics. We show that an Interstellar Probe
mission with a dedicated dust suite would bring unprecedented advances to
interstellar dust research, and can also contribute-through measuring dust - to
heliospheric science. This can, in particular, be done well if we work in
synergy with other missions inside the solar system, thereby using multiple
vantage points in space to measure the dust as it `rolls' into the heliosphere.
Such synergies between missions inside the solar system and far out are crucial
for disentangling the spatially and temporally varying dust flow. Finally, we
highlight the relevant instrumentation and its suitability for contributing to
finding answers to the research questions.Comment: 18 pages, 7 Figures, 5 Tables. Originally submitted as white paper
for the National Academies Decadal Survey for Solar and Space Physics
2024-203
Thin conductive coatings formed by plasmapolymerization of 2-iodothiophene
Intrinsically conductive plasma polymers were formed in a 2.45 GHz microwave low pressure plasma. The electrical conductivity and structure of the polymeric films were compared with those of electrochemically polymerized polythiophene. A new method of doping was tested using the iodine-containing monomer 2- iodothiophene. Films with high electrical conductivity (10 high -1 down to 10 high -6 Scm high -1) could be produced, and their chemical structure was studied by X-ray photoelectron spectroscopy and Fourier transform IR spectroscopy. The IR spectra give a strong indication that the chemical structure of these films is comparable with that of electrochemically deposited polythiophene. Optical emission spectroscopy was used to give in-situ information about the fragmentation mechanism in the plasma
Synergies between interstellar dust and heliospheric science with an interstellar probe
We discuss the synergies between heliospheric and dust science, the open science questions, the technological endeavours, and programmatic aspects that are important to maintain or develop in the decade to come. In particular, we illustrate how we can use interstellar dust in the solar system as a tracer for the (dynamic) heliosphere properties, and emphasize the fairly unexplored, but potentially important science question of the role of cosmic dust in heliospheric and astrospheric physics. We show that an interstellar probe mission with a dedicated dust suite would bring unprecedented advances to interstellar dust research, and can also contribute â through measuring dust â to heliospheric science. This can, in particular, be done well if we work in synergy with other missions inside the solar system, thereby using multiple vantage points in space to measure the dust as it ârollsâ into the heliosphere. Such synergies between missions inside the solar system and far out are crucial for disentangling the spatially and temporally varying dust flow. Finally, we highlight the relevant instrumentation and its suitability for contributing to finding answers to the research questions.ISSN:2752-820