Comment on "Osmotic pressure of compressed lattice knots".
editorial · Level V
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- Record sourced from PubMed, PMID 32069633.
- Also identified by DOI 10.1103/PhysRevE.101.016501.
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Abstract
In a recent paper, E. J. Janse van Rensburg has presented computational data enumerating the conformations of closed circular self-avoiding lattice polymers with knots confined in a cubic box, and claimed to have observed a negative osmotic pressure in the system. The purpose of this comment is to state that osmotic pressure by a self-avoiding polymer, knotted or otherwise, is positive, which means a polymer pushes confining walls outwards, and the statement of the opposite is a mistake.