# Molecular Simulation of Thermo-osmotic slip

## TL;DR

This paper compares three molecular simulation methods to predict thermo-osmotic slip at solid-fluid interfaces, demonstrating their practical feasibility despite minor differences under various conditions.

## Contribution

It introduces and evaluates three different molecular simulation techniques for thermo-osmotic slip prediction, highlighting their consistency and practical applicability.

## Key findings

- Different simulation approaches show minimal differences in results.
- Practical molecular simulations of thermo-osmotic slip are feasible.
- The methods are robust across various physical conditions.

## Abstract

Thermo-osmotic slip -- the flow induced by a thermal gradient along a surface -- is a well-known phenomenon, but curiously there is a lack of robust molecular-simulation techniques to predict its magnitude. Here, we compare three different molecular simulation techniques to compute the thermo-osmotic slip at a simple solid-fluid interface. Although we do not expect the different approaches to be in perfect agreement, we find that the differences are barely significant for a range of different physical conditions, suggesting that practical molecular simulations of thermo-osmotic slip are feasible.