Concurrent determination of heat and capacity change of a sessile droplet using a single measurement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F24%3APU154920" target="_blank" >RIV/00216305:26220/24:PU154920 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0924424724010367" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0924424724010367</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.sna.2024.116042" target="_blank" >10.1016/j.sna.2024.116042</a>
Alternative languages
Result language
angličtina
Original language name
Concurrent determination of heat and capacity change of a sessile droplet using a single measurement
Original language description
Microcalorimetry, designed for the independent measurement of enthalpy and heat capacity, has been commercially available for a considerable time. However, heat-related states in samples, especially liquids, can introduce complicated phenomena and challenging measurement and data evaluation processes. Such complexity becomes apparent when observing fluctuations in heat capacity (Cp) while measuring heat consumption (Q) during water evaporation. This paper presents a continuous heat pulse measurement (CHPM) method for concurrently analyzing Q and Cp in a single test using microcalorimetry. The sample droplet of 400 nL was directly dispensed on the microcalorimeter surface, followed by a light-emitting diode (LED) radiation generating heat to perform CHPM. We repetitively heated the microcalorimeter using heat pulses provided by LED irradiation, with their duration set to 100 ms and 10 s repetition, while measuring the temperature response of the microcalorimeter. A MATLAB-based simulation model was established to validate the accuracy of our Cp measurements, which show its value of 0.79 % of minimum variance. Water evaporation coupled with simultaneous salt crystallization served as our study model, where the Cp values were calculated from real-time responses to heat pulses provided by LED. The experimental outcomes confirm the suitability of CHPM in extracting key thermal properties and emphasize its versatility as a diagnostic tool, providing a significant method for research and applications in the fields of physics, engineering, and beyond.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
—
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
SENSORS AND ACTUATORS A-PHYSICAL
ISSN
1873-3069
e-ISSN
—
Volume of the periodical
380
Issue of the periodical within the volume
12
Country of publishing house
CH - SWITZERLAND
Number of pages
8
Pages from-to
1-8
UT code for WoS article
001359542300001
EID of the result in the Scopus database
2-s2.0-85208992664