High-precision thermostat for light scattering experiments of critical samples

The characteristics of PID controllers lead to their widespread adoption and strong demand in temperature control systems since the experimental stability of temperature is required for many applied and research endeavours. The design and manufacture of both the thermal and electronic components of...

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Bibliographic Details
Published in:Journal of instrumentation 2022-12, Vol.17 (12), p.P12007
Main Authors: Naseer, A.P., Santhi Krishna, U., Madhavan Unni, P.K.
Format: Article
Language:English
Subjects:
Critical phenomena observations
Critical point
Data acquisition
Electronic components
Instrument optimisation
Instrumental noise
Light scattering
Mixtures
Proportional integral derivative
Software
Temperature control
Thermostats
Transient response
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Summary:The characteristics of PID controllers lead to their widespread adoption and strong demand in temperature control systems since the experimental stability of temperature is required for many applied and research endeavours. The design and manufacture of both the thermal and electronic components of the milli-kelvin metallic thermostat, as well as the light scattering experimental set-up for the liquid mixture critical point research, are presented in this publication. The thermostat was tuned over a wide temperature range of 30–106°C, and short-term stability, long-term stability, and transient responses were studied in detail. The findings demonstrate that the thermostat provides accurate and steady temperature stability. The light scattering experimental setup was arranged and a LabVIEW software program was developed for data acquisition of the intensity of the incident beam, scattered beam, transmitted beam, and the temperature of the liquid mixture simultaneously.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/17/12/P12007