Communication: superstabilization of fluids in nanocontainers

Area of Science:

• Thermodynamics
• Materials Science
• Physical Chemistry

Background:

• Metastable fluids pose challenges in thermodynamics due to spontaneous nucleation into stable phases.
• Accurate prediction and measurement of metastable fluid properties are hindered by this inherent instability.

Purpose of the Study:

• To investigate methods for preventing nucleation in metastable fluids.
• To achieve and study infinitely long-lived metastable states.
• To develop a predictive framework for controlling nucleation.

Main Methods:

• Utilizing small closed containers to inhibit spontaneous nucleation.
• Applying a general thermodynamic framework to analyze superstabilization conditions.
• Deriving formulas to predict critical container sizes for preventing phase transformation.

Main Results:

• Demonstrated that small containers completely prevent nucleation, enabling stable metastable states.
• Derived simple formulas accurately predicting the conditions (container size) for superstabilization.
• Showed it is impossible to form a new stable phase within these confined conditions.

Conclusions:

• Small closed containers offer a method to achieve and maintain deeply metastable fluids indefinitely.
• The derived formulas provide a tool to control nucleation at experimentally feasible conditions.
• This controlled metastability has significant implications across diverse scientific and technological fields.