Correction<strong>Correction: Non Solved Contemporary Scientific Problems of Non-Conventional Bio-Surfaces Lubrication. <em>Recent Progress in Materials</em> 2023; 5(1): 013</strong>Krzysztof Wierzcholski ^*, Jacek GospodarczykWSG Bydgoszcz University Garbary 2, Bydgoszcz, Poland; E-Mails: <a href="mailto:Krzysztof.wierzcholski@wp.pl">Krzysztof.wierzcholski@wp.pl</a>; <a href="mailto:jacek.gospodarczyk@byd.pl">jacek.gospodarczyk@byd.pl</a>* <strong>Correspondence: </strong>Krzysztof Wierzcholski; E-Mail: <a href="mailto:Krzysztof.wierzcholski@wp.pl">Krzysztof.wierzcholski@wp.pl</a><strong>Academic Editor: </strong>Hossein Hosseinkhani<strong>Special Issue</strong>: <a href="https://lidsen.com/journals/rpm/rpm-special-issues/hydrodynamic-theory-biological-mechanical-material-surfaces-non-conventional-lubricants">Non-Conventional Hydrodynamic Lubrication for Biological and Mechanical Surfaces</a><em>Recent Progress in Materials</em>2023, volume 5, issue 2doi:10.21926/rpm.2302018<strong>Received: </strong>April 26, 2023<strong>Accepted: </strong>April 26, 2023<strong>Published: </strong>April 27, 2023

This paper presents new non solved, scientific research directions and their applications in contemporary non-conventional lubrication problems of the bio-surfaces domain. Here are described new research scientific trends and research problem solutions of hydrodynamic lubrication for living tissue, human skin and human cartilage joints surfaces. At first in introduction is described the state of the art, a new purpose of anticipate research and the bio-tribology connections with other scientific domains are documented. The bio-tribology is a new scientific domain where the bio-properties of living, mutually cooperating bio-materials have an important influence on joint human functioning and on the consequences of obtained bio-tribology effects. Using experimental and numerical methods, the main result is focused on the influence of the bio-sweat dynamic viscosity variations across the film thickness on the load carrying capacity of the lubricated human skin and limbs.