Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Surface Tension of Fluid

Surface Tension of Fluid

Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Reverse Tesla valve modulated efficient water evaporation and cooling.

Nature communications·2026

Same author

Temperature-dependent microwave properties of vanadium dioxide film across the phase transition.

iScience·2026

Same author

Optical Modulation of Interfacial Coupling Drives a Transition from Free-Epitaxy to Locked-Epitaxy.

Nano letters·2026

Same author

Hemodynamic decoding for multimodal connected cardiovascular healthcare.

Science bulletin·2026

Same author

Flexural phonon instability defines intrinsic van der Waals elastic limits in the interlayer direction.

Nature communications·2026

Same author

Polymer-Assisted Controllable Growth of Large-Scale and High-Quality Two-Dimensional Perovskite Single-Crystal Microplate Arrays toward Photodetector Integration.

ACS nano·2026

Search research articles

Related Experiment Video

Updated: Dec 17, 2025

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Published on: November 9, 2015

How Universal Is the Wetting Aging in 2D Materials.

Xuan Chen¹, Zhibin Yang², Shizhe Feng³

¹Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China.

|June 25, 2020

Summary

Airborne contamination causes 2D indium selenide (InSe) films to age, becoming more hydrophobic. This wetting aging effect appears general across various substrates and may apply to many 2D materials.

Keywords:

2D materials InSe airborne contamination hydrophobization wetting aging effect

More Related Videos

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

Related Experiment Videos

Last Updated: Dec 17, 2025

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Published on: November 9, 2015

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices

Published on: March 27, 2019

Area of Science:

Materials Science
Surface Science
Nanotechnology

Background:

Two-dimensional (2D) materials like graphene, WS2, and MoS2 on silicon substrates show aging and hydrophobicity due to airborne contaminants.
The ubiquity and specific mechanisms of this wetting aging are not fully understood.

Purpose of the Study:

To investigate the general nature of hydrophilic-to-hydrophobic wetting aging in 2D indium selenide (InSe) films.
To explore the influence of substrates and film thickness on this aging phenomenon.
To identify the adsorbed species responsible for wetting aging.

Main Methods:

Synthesis of 2D InSe films on diverse substrates (silicon, glass, nickel, copper, aluminum oxide).
Characterization of wetting properties (hydrophilicity/hydrophobicity) over time.
Analysis of adsorbed surface contaminants using surface-sensitive techniques.

Main Results:

A significant hydrophilic-to-hydrophobic wetting aging was observed in 2D InSe films.
This aging was independent of the substrate material but sensitive to film thickness.
Airborne contaminants, particularly those with alkyl chains, were identified as the cause.

Conclusions:

Wetting aging of 2D InSe films by airborne contamination is a general phenomenon.
The findings suggest that wetting aging might be a universal characteristic of many 2D materials.
Understanding this aging is crucial for the stability and application of 2D materials.