What does this research mean for the field?

Surface-liquid friction at subpicosecond time scales exhibits non-Markovian dynamics that can be described by a Navier memory kernel, revealing a direct coupling between interfacial friction and substrate vibrational modes. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To capture subpicosecond nonstationary surface-liquid friction dynamics using a generalized Navier memory kernel framework beyond classical Markovian approximations.

August 22, 2026The Journal of Physical Chemistry LettersOpen Access

Non-Markovian Dynamics of Surface–Liquid Slip

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Authors

SCShane R. CarlsonFreie Universität Berlin BHBenjamin J. A. HéryFreie Universität Berlin LLLouis LehmannFreie Universität Berlin

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Implication

Molecular dynamics simulation reveals subpicosecond friction memory in water-substrate interfaces, indicating strong coupling between interfacial liquid slip and substrate vibrations.

Key Points

To capture subpicosecond nonstationary surface-liquid friction dynamics using a generalized Navier memory kernel framework beyond classical Markovian approximations.
Conducted equilibrium and nonequilibrium molecular dynamics simulations of water adsorbed onto chemically varied self-assembled monolayers, including polar, nonpolar, fluorinated, and nonfluorinated surfaces.
Extracted Navier memory kernels in both time and frequency domains and evaluated dynamics with a coupled damped harmonic oscillator model.
Navier memory kernels displayed prominent spectral features directly corresponding to the substrate's surface vibrational modes.
A coupled damped harmonic oscillator model quantitatively reproduced the simulation-derived spectral characteristics, confirming coupling between substrate dynamics and interfacial friction.

Cite This Study

Carlson et al. (2026) studied this question.

synapsesocial.com/papers/6a895f41ca7ade938187db4f https://doi.org/10.1021/acs.jpclett.6c02288

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Implication

Molecular dynamics simulation reveals subpicosecond friction memory in water-substrate interfaces, indicating strong coupling between interfacial liquid slip and substrate vibrations.

Non-Markovian Dynamics of Surface–Liquid Slip

Discussion

Member takes

Implication

Key Points

Cite This Study

Non-Markovian Dynamics of Surface–Liquid Slip

Discussion

Member takes

Implication

Key Points

Cite This Study

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