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An Integrated Hardware-Software Platform for Automated Thermodynamic Characterization of Gas-Solid Interfaces Using a

Chunfeng Luo1, Haitao Yu2, Naidong Wang2

  • 1School of Microelectronics, Shanghai University, Shanghai 200444, China.

Micromachines
|May 4, 2026
PubMed
Summary

A new automated platform for measuring gas-solid interface thermodynamic parameters was developed. This system enables efficient, continuous adsorption isotherm acquisition and accurate extraction of thermodynamic properties like entropy and enthalpy change.

Keywords:
CO2 adsorptionLabVIEW automationSips modelgas–solid interfacehigh-precision measurementresonant microcantileverthermodynamic parameter extraction

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Area of Science:

  • Materials Science and Engineering
  • Physical Chemistry
  • Chemical Engineering

Background:

  • Accurate measurement of material thermodynamic parameters is vital for understanding host-guest interactions.
  • Conventional adsorption measurement systems are often manual, time-consuming, and inefficient.
  • A general-purpose, automated system for thermodynamic parameter measurement is needed.

Purpose of the Study:

  • To develop a complete, automated gas-solid interface thermodynamic parameter measurement platform.
  • To enable continuous and efficient acquisition of adsorption isotherms.
  • To accurately extract thermodynamic parameters such as entropy, enthalpy, and Gibbs free energy change.

Main Methods:

  • Developed an automated platform integrating isothermal adsorption and a resonant microcantilever testing setup.
  • Implemented a stepwise concentration-gradient protocol and on-chip thermal desorption for continuous data acquisition.
  • Constructed an improved thermodynamic parameter extraction model based on the Sips model and a modified Fourier algorithm for data analysis.

Main Results:

  • The system demonstrated high performance with a maximum sampling rate of 10,000 pts/s and low noise levels.
  • Achieved fast settling times for temperature control (24.9 ms) and frequency response (9.6 ms).
  • Successfully extracted thermodynamic parameters (ΔS, ΔH, ΔG) for CO2 adsorption on H-SSZ-13 with high reproducibility.

Conclusions:

  • The developed platform offers a simple architecture, superior performance, and high reproducibility for gas-solid interface thermodynamic studies.
  • The automated system overcomes limitations of conventional methods, enabling efficient and continuous thermodynamic parameter measurement.
  • The platform shows strong potential for future commercialization in materials characterization and gas adsorption research.