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Contact Angle

Contact Angle

When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive force...

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A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

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Antiadhesion Function between a Biological Surface and a Metallic Device Interface at High Temperature by Wettability

Jun-Yong Park¹, Mizuki Tenjimbayashi¹, Jun Muto²

¹Center for Material Design Science, School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.

ACS Biomaterials Science & Engineering

|January 15, 2021

Summary

Superhydrophobic coatings on bipolar forceps reduce tissue adhesion and heat damage during electrosurgery. This innovation minimizes operational delays and collateral tissue injury in procedures like neurosurgery.

Keywords:

antiadhesion bipolar forceps electrosurgery device high temperature hydrophobic superhydrophobic wettability control

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Last Updated: Jun 19, 2026

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

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Published on: March 29, 2018

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

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Published on: August 15, 2018

Area of Science:

Biomaterials Science
Surgical Technology
Medical Device Engineering

Background:

Metallic medical equipment, including bipolar forceps used in electrosurgery (especially neurosurgery), can cause collateral heat damage to tissues due to high tip temperatures.
Tissue adherence to bipolar forceps necessitates frequent cleaning or replacement, leading to prolonged surgical times and potential complications.

Purpose of the Study:

To design and evaluate bipolar forceps with enhanced antiadhesion properties using a superhydrophobic material coating.
To investigate the impact of this coating on reducing tissue adhesion and thermal damage during electrosurgery.

Main Methods:

Bipolar forceps were coated with a superhydrophobic material.
Coated and uncoated forceps were tested on various tissue samples at different temperatures.
Surface wettability, temperature increase, and adhesion forces were measured and compared.

Main Results:

The superhydrophobic coating significantly reduced the temperature increase at the forceps tips.
Adhesion force measurements showed a substantial decrease in tissue adherence to coated forceps.
Antiadhesion properties were directly linked to modifications in surface tension caused by the hydrophobic coating.

Conclusions:

Superhydrophobic coatings effectively impart antiadhesion properties to metallic surgical instruments like bipolar forceps.
These coatings show significant potential for minimizing tissue adhesion and reducing collateral heat damage, thereby improving surgical efficiency and patient outcomes.