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We investigate geometric aspects of double field theory (DFT) and its formulation as a doubled membrane sigma-model. Starting from the standard Courant algebroid over the phase space of an open membrane, we determine a splitting and a…

High Energy Physics - Theory · Physics 2018-08-01 Athanasios Chatzistavrakidis , Larisa Jonke , Fech Scen Khoo , Richard J. Szabo

The behavior of a confined spherical symmetric anomalous fluid under high external pressure was studied with Molecular Dynamics simulations. The fluid is modeled by a ore-softened potential with two characteristic length scales, which in…

Soft Condensed Matter · Physics 2014-08-21 José Rafael Bordin , Leandro B. Krott , Marcia C. B. Barbosa

Particle suspensions in confined geometries can become clogged, which can have a catastrophic effect on function in biological and industrial systems. Here, we investigate the macroscopic dynamics of suspensions in constricted geometries.…

Fluid Dynamics · Physics 2025-05-23 Anushka Herale , Philip Pearce , Duncan Hewitt

Spatial profiles of the pressure have been measured in atomic Fermi gases with primarily 2D kinematics. The in-plane motion of the particles is confined by a gaussian-shape potential. The two-component deeply-degenerate Fermi gases are…

Quantum Gases · Physics 2016-09-05 Kirill Martiyanov , Tatiana Barmashova , Vasiliy Makhalov , Andrey Turlapov

Microfluidic devices can be used to produce highly controlled and monodisperse double or multiple emulsions. The presence of inner drops inside a jet of the middle phase introduces deformations in the jet, which leads to breakup into…

Most measurements of compressive strength of ductile materials have involved Hopkinson-Kolsky bars or Taylor anvils placing samples in uniaxial compression. In these geometries strain is limited by the tendency of the sample to petal, in…

Instrumentation and Detectors · Physics 2024-06-19 J. L. Belof , J. I. Katz

Elastic radial deformation of multiwall carbon nanotubes (MWNTs) under hydrostatic pressure is investigated within the continuum elastic approximation. The thin-shell theory, with accurate elastic constants and interwall couplings, allows…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Hiroyuki Shima , Susanta Ghosh , Marino Arroyo , Kohtaroh Iiboshi , Motohiro Sato

Manipulating the shape of nanoscale objects in a controllable fashion is at the heart of designing materials that act as building blocks for self-assembly or serve as targeted drug delivery carriers. Inducing shape deformations by…

Soft Condensed Matter · Physics 2014-09-15 Vikram Jadhao , Creighton K. Thomas , Monica Olvera de la Cruz

The structural and magneto-transport properties of type-II Dirac semimetal candidate Ir2In8S have been investigated under high pressure. The ambient tetragonal structure (P4_2/mnm) is found to be stable up to 7 GPa, above which the system…

Superconductivity · Physics 2022-05-23 Pallavi Malavi , Prakash Kumar , Navita Jakhar , Surjeet Singh , S. Karmakar

In situ studies under severe plastic deformation at high pressures, employing rotational/shear diamond anvil cells (RDAC), have recently gained much interest in the high-pressure community owing to their potential applications in material…

Materials Science · Physics 2023-12-22 K. K. Pandey , H. K. Poswal

In the present Supplementary notes to our work "Arresting bubble coarsening: A two-bubble experiment to investigate grain growth in presence of surface elasticity" (accepted in EPL), we derive the expression of the gas pressure inside a…

Soft Condensed Matter · Physics 2019-07-24 A Salonen , Cyprien Gay , A Maestro , W Drenckhan , Emmanuelle Rio

The discharge structure of inductively coupled plasma is studied via fluid simulation and analytic theory collaboration. At low pressure, the discharge is stratified by the double layer, which is modelled as dipole moment. The parabolic…

Plasma Physics · Physics 2021-11-04 Shu-Xia Zhao , An-Qi Tang

The advantage of Bridgman anvil pressure cells is their wide pressure range and the large number of wires which can be introduced into the pressure chamber. In these pressure cells soft solid pressure mediums like steatite are used. We have…

Other Condensed Matter · Physics 2009-11-13 A. -S. Ruetschi , D. Jaccard

This work addresses the two great challenges of the spark plasma sintering (SPS) process: the sintering of complex shapes and the simultaneous production of multiple parts. A new controllable interface method is employed to concurrently…

Materials Science · Physics 2020-11-24 Charles Manière , Elisa Torresani , Eugene A. Olevsky

Measurement of the absolute value of the applied pressure in high-pressure muon and neutron experiments is a complicated task. It requires both the presence of a calibration material inside the sample volume as well as additional time for…

We developed a method to make GEM foils with a spherical geometry. Tests of this procedure and with the resulting spherical GEMs are presented. Together with a spherical drift electrode, a spherical conversion gap can be formed. This…

Straining graphene results in the appearance of a pseudo-magnetic field which alters its local electronic properties. Applying a pressure difference between the two sides of the membrane causes it to bend/bulge resulting in a resistance…

Mesoscale and Nanoscale Physics · Physics 2017-08-03 S. P. Milovanovic , M. Z. Tadic , F. M. Peeters

We present an implementation in a linear-scaling density-functional theory code of an electronic enthalpy method, which has been found to be natural and efficient for the ab initio calculation of finite systems under hydrostatic pressure.…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Niccolò R. C. Corsini , Andrea Greco , Nicholas D. M. Hine , Carla Molteni , Peter D. Haynes

We measure the response of open-cell polyurethane foams filled with a dense suspension of fumed silica particles in polyethylene glycol at compression speeds spanning several orders of magnitude. The gradual compressive stress increase of…

Within the framework of fuel cells, porous materials are used for filtration purpose. Determining physical properties like porosity and permeability are of utmost importance to predict and to manage filtration efficiency of the materials.…

Materials Science · Physics 2016-03-01 Hussain Najmi , Eddy El Tabach , Khaled Chetehouna , Nicolas Gascoin , François Falempin
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