Comment on "Laser refrigeration of hydrothermal nanocrystals in physiological media"

TL;DR

This paper critically examines a recent claim about laser cooling in liquids, questioning its consistency with fundamental energy conservation principles.

Contribution

It provides a scientific critique highlighting potential violations of energy conservation in the reported laser refrigeration of hydrothermal nanocrystals.

Findings

Questions the validity of reported laser cooling in liquids

Highlights the need for rigorous energy accounting in laser refrigeration studies

Suggests potential errors or misconceptions in the original report

Abstract

The recent report on laser cooling of liquid may contradict the law of energy conservation.