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Multi-temperature models are nowadays often used to quantify the ultrafast electron-phonon (boson) relaxations and coupling strengths in advanced quantum solids. To test their applicability we study the time evolution of the electron…

Materials Science · Physics 2020-01-29 Manuel Obergfell , Jure Demsar

We have developed a new method for fabrication of ultra-low noise silver-silver chloride (Ag-AgCl) reference electrode with dramatically high stability, useful in biomedical precise measurements. Low noise level and high stability are the…

Chemical Physics · Physics 2019-03-26 Behnoush Rostami , Seyed Iman Mirzaei , Atieh Zamani , A. Simchi , Mehdi Fardmanesh

Co2FeAl0.5Si0.5 (CFAS) is a Heusler compound that is of interest for spintronics applications, due to its high spin polarization and relatively low Gilbert damping constant. In this study, the behavior of ferromagnetic resonance as a…

The operation of quantum dots at highest possible temperatures is desirable for many applications. Capacitance-voltage spectroscopy (C(V)-spectroscopy) measurements are an established instrument to analyze the electronic structure and…

Mesoscale and Nanoscale Physics · Physics 2016-12-19 Fabian Brinks , Andreas D. Wieck , Arne Ludwig

Supersonic engine development requires accurate and detailed measurements of fluidic and thermodynamic parameters to optimize engine designs and benchmark computational fluid dynamic (CFD) simulations. Here, we demonstrate that dual…

Different techniques of Glow Discharge AES are described in this paper. The most important parameters at such investigations are: the power of VHF-field, pressure of the inert gas and concentration of the easily ionizable additive, e.g.…

Biological Physics · Physics 2007-07-18 Vasil G. Bregadze , Eteri S. Gelagutashvili , Ketevan J. Tsakadze

The dynamics and rheology of a vesicle confined in a channel under shear flow are studied at finite temperature. The effect of finite temperature on vesicle motion and system viscosity is investigated. A two-dimensional numerical model,…

Soft Condensed Matter · Physics 2022-10-04 A. Lamura

We present the dynamic velocity profiles of a Newtonian fluid (glycerol) and a viscoelastic Maxwell fluid (CPyCl/NaSal in water) driven by an oscillating pressure gradient in a vertical cylindrical pipe. The frequency range explored has…

Fluid Dynamics · Physics 2009-11-11 M. Torralba , J. R. Castrejon-Pita , A. A. Castrejon-Pita , G. Huelsz , J. A. del Rio , J. Ortin

Vibrational sum frequency scattering (SFS) has been used to study sub-micron, catanionic vesicles in solution. The vesicles were synthesized from a binary mixture of dodecyltrimethylammonium bromide (DTAB) and sodium dodecylsulfate (SDS)…

Soft Condensed Matter · Physics 2015-03-17 Matthew L. Strader , Hilton Barbosa de Aguiar , Alex G. F. de Beer , Sylvie Roke

We investigated isolated sodium/chloride aqueous droplets at the microscopic level, which comprise from about 5k to 1M water molecules and whose salt concentrations are 0.2$m$ (brackish water) and 0.6$m$ (sea water), by means of molecular…

Chemical Physics · Physics 2022-06-02 Valérie Vallet , Jonathan Coles , Florent Réal , Céline Houriez , Michel Masella

In this work, Rayleigh microwave scattering was utilized to measure the electron number density produced by nanosecond high voltage breakdown in air between two electrodes in a pin-to-pin configuration (peak voltage 26 kV and pulse duration…

Plasma Physics · Physics 2018-08-15 Xingxing Wang , Paul Stockett , Ravichandra Jagannath , Sally Bane , Alexey Shashurin

Measurements of the sound velocities in a single crystal of FeSi were performed in the temperature range 4-300 K. Elastic constants $C_{12}$ and $C_{44}$ deviate from a quasiharmonic behavior at high temperature; whereas, $C_{12}$ increases…

Strongly Correlated Electrons · Physics 2015-05-14 Alla E. Petrova , Vladimir N. Krasnorussky , Sergei M. Stishov

Brillouin spectroscopy was used to probe the viscoelastic properties of E. coli bacterial cell lysate in aqueous solution at GHz-frequencies over the range -5.0 $^\circ$C $\leq T \leq$ 50.0 $^\circ$C. This work offers a first temperature…

Soft Condensed Matter · Physics 2023-11-13 D. F. Hanlon , S. Heravi , V. Booth , G. T. Andrews

Superfluids, such as superfluid $^3\mathrm{He}$ and $^4\mathrm{He}$, exhibit a broad range of quantum phenomena and excitations which are unique to these systems. Nanoscale mechanical resonators are sensitive and versatile force detectors…

The loss factor of supercooled water at the frequencies 11...180 GHz has been measured. A measuring technique has been proposed, in which wetted nanoporous silicate materials, silica gels, with the mean diameter of the pores being 6-9 nm,…

Soft Condensed Matter · Physics 2019-01-15 G. S. Bordonskiy , A. O. Orlov

Precise radial velocity measurements (delta v/c ~ 10^{-7}) of FeII lines in damped Ly-alpha systems from very high quality VLT/UVES spectra of quasars HE0515-4414 and Q1101-264 are used to probe cosmological time dependence of the fine…

Microwave measurements have recently been successfully applied to measure ferroelectric materials on the nanoscale, including detection of polarization switching and ferroelectric domain walls. Here we discuss the question whether scanning…

Materials Science · Physics 2021-11-24 Mykola Yelisieiev , Petro Maksymovych , Anna N. Morozovska

In the present paper we consider dispersion curves of longitudinal excitations of a model core-softened liquid and SPC/E model of water. We show that both systems demonstrate anomalous behavior of the excitation frequencies: the frequencies…

Soft Condensed Matter · Physics 2018-12-27 Yu. D. Fomin , E. N. Tsiok , V. N. Ryzhov , V. V. Brazhkin

We introduce a spectroscopic approach to primary gas thermometry, harnessing precise optical cavity resonance frequencies and ab initio molecular line intensity calculations. By utilizing CO (3-0) vibrational band lines and cavity mode…

The characterisation of the dynamic properties of viscoelastic monolayers of surfactants at the gasliquid interface is very important in the analysis and prediction of foam stability. With most of the relevant dynamic processes being rapid…