Mechanical approach to chemical transport

N Kocherginsky, M Gruebele - Proceedings of the National …, 2016 - National Acad Sciences
Nonequilibrium thermodynamics describes the rates of transport phenomena with the aid of
various thermodynamic forces, but often the phenomenological transport coefficients are not …

Statistical thermodynamics of material transport in nonisothermal suspensions

S Semenov, M Schimpf - The Journal of Physical Chemistry B, 2015 - ACS Publications
An approach to the transport of material in a temperature gradient is outlined using
nonequilibrium thermodynamics theory. The model is applicable to the thermophoresis of …

Internal degrees of freedom as a basis for isotopic effects in thermodiffusion

SN Semenov, ME Schimpf - The Journal of Physical Chemistry B, 2021 - ACS Publications
We present a model that relates isotope effects in thermodiffusion to changes in internal
degrees of freedom associated with rotational and vibrational motion. The model uses …

Nonequilibrium thermodynamic material transport equations for thermodiffusion of isotopes and isomers in multicomponent systems

SN Semenov, ME Schimpf - Physical Chemistry Chemical Physics, 2022 - pubs.rsc.org
We extend our nonequilibrium thermodynamic model of thermodiffusion in binary systems to
multi-component mixtures. The fundamental parameter is the difference in molecular entropy …

Statistical Mechanic and Phenomenological Approaches to Isomeric Effects in Thermodiffusion

SN Semenov, ME Schimpf - The Journal of Physical Chemistry B, 2022 - ACS Publications
We present a model that explains variance in the thermodiffusion of hydrocarbon isomers in
binary liquid mixtures. The model relies on material transport equations for binary …

Thermoosmosis as driving mechanism for micro-or nanoscale engine driven by external temperature gradient

S Semenov, M Schimpf - The Journal of Physical Chemistry C, 2015 - ACS Publications
We study thermoosmosis as the physical basis for creating a micro-or nanoscale engine. As
a model system, we consider concentric cylinders in which an annular cavity has been …

Thermoosomosis in microfluidic devices containing a temperature gradient normal to the channel walls

SN Semenov, ME Schimpf - The European Physical Journal E, 2019 - Springer
We analyze a microfluidic pump from the literature that utilizes a flat channel with boundary
walls at different temperatures and tilted elongated pillars within in order to construct an …

Hydrodynamic interaction between two beads in the presence of a temperature gradient: Effect of correlation of beads' motion on the Soret effect

G Najafi Golvandani, SN Rasuli - Iranian Journal of Physics Research, 2024 - ijpr.iut.ac.ir
To study the effect of internal structure of molecules on the Soret effect, we probe
consequences of exerting a temperature gradient to a suspension of one single particle …

Comparative Examination of Nonequilibrium Thermodynamic Models of Thermodiffusion in Liquids

SN Semenov, ME Schimpf - Proceedings, 2019 - mdpi.com
We analyze existing models for material transport in non-isothermal non-electrolyte liquid
mixtures that utilize non-equilibrium thermodynamics. Many different sets of equations for …

برهم‌کنش هیدرودینامیکی دو کره‌ در حضور گرادیان دما، اثر هَم‌بستگی میانِ حرکت دو ذره بر ضریبِ سره

نجفی گلوندانی, گلناز, سالاری, رسولی, سید نادر - مجلۀ پژوهش فیزیک ایران, 2024‎ - ijpr.iut.ac.ir
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تَک ذرۀ شناور در سیال می‌پردازیم. تک ذرۀ مورد بررسی با دو ریز کره که با فنر نرمی به یکدیگر …