Thermal Optical Analysis
Thermal Optical Analysis - Related Videos
09:42
Analysis of Thermal Expansion via Dilatometry
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2023
Source: J. Jacob Chavez, Ryan T. Davis, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Thermal expansion is extremely important when considering which materials will be used in systems that experience fluctuations in temperature. A high or low thermal expansion in a material may or may not be desirable, depending on the application. For instance, in a common liquid thermometer, a material with a high thermal expansion would be...
10:22
Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
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Cited by 16 •
2019
This article presents a protocol and software tool for the quantification of uncertainties in the calibration and data analysis of a semi-continuous thermal-optical organic/elemental carbon analyzer.
07:46
Optical Materialography Part 2: Image Analysis
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2023
Source: Faisal Alamgir, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA The imaging of microscopic structures of solid materials, and the analysis of the structural components imaged, is known as materialography. Often, we would like to quantify the internal three-dimensional microstructure of a material using only the structural features evidenced by an exposed two-dimensional surface. While X-ray based tomographical methods can reveal buried...
12:10
Semi-automated Optical Heartbeat Analysis of Small Hearts
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Cited by 108 •
2009
We have developed a Semi-automated Optical Heartbeat Analysis method (SOHA) for analyzing high speed optical recordings from Drosophila, zebrafish and embryonic mouse hearts. We demonstrate the application of our methodology to the analysis of heart function in fruit fly and embryonic mouse hearts.
06:21
Thermal Behavior and Power Efficiency Comparison of AC vs. DC Electrical Heating in a Distillation Column Using Infrared Thermography Analysis
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2025
This article presents a comparative study on the thermal behavior and energy efficiency of a heating element within a distillation column boiler, powered by alternating current (AC) and direct current (DC), evaluating its performance from statistical results such as minimum and maximum temperature, the mean of the thermal data and the coefficient of variation.
FAQs
The two atmospheres separate carbon behavior during heating. An inert atmosphere allows carbon-containing material to evolve before oxidation, while the later oxidizing atmosphere promotes conversion of remaining carbon, including material associated with elemental carbon, into measurable gases. Comparing the signals from both stages helps quantify distinct carbon fractions rather than treating all carbon in particulate matter as one component.
Heating can cause some organic carbon to form pyrolytic material, which may interfere with carbon-fraction measurements. Laser transmission or reflectance tracks optical changes in the sample as heating proceeds. These changes provide a basis for recognizing pyrolytic effects and improving the separation between organic carbon and elemental carbon in the reported results.
Gas conversion gives the carbon released during each heating stage a measurable analytical signal. This allows the method to produce quantitative carbon fractions from particulate samples instead of relying only on visible changes during heating. The resulting measurements support comparisons among environmental samples and help characterize the carbon composition of aerosols.
The sequence of controlled heating, the atmosphere present at each stage, and the optical response all influence how carbon fractions are assigned. Inert heating reveals early carbon evolution, whereas oxidation addresses carbon that remains or forms during analysis. Because optical tracking helps identify pyrolytic changes, interpreting thermal and optical signals together is essential for consistent results.
A measurement begins with a particulate sample undergoing controlled heating in an inert atmosphere. Carbon-containing products are converted into measurable gases while optical transmission or reflectance is monitored. The atmosphere then changes to oxidizing conditions, and the remaining carbon is analyzed through the corresponding gas and optical signals. These combined measurements yield quantitative carbon fractions.
The technique is useful when researchers need to characterize carbon in environmental particulate matter. Its measurements support air-quality assessment, atmospheric monitoring, and evaluation of pollution or combustion impacts. Because it distinguishes carbon fractions, the method can also help compare aerosol composition across samples and investigate carbon contributions to broader environmental processes.
Different particulate samples can be compared using their measured organic and elemental carbon fractions. Those patterns provide information relevant to assessing the influence of pollution and combustion on aerosol composition. Thermal Optical Analysis therefore contributes quantitative evidence for examining emission impacts, while the broader interpretation remains tied to the environmental samples and monitoring context.
Carbon-containing aerosols participate in environmental processes, and their composition is important when studying atmospheric particles. By quantifying organic and elemental carbon fractions, the method supplies data for describing aerosol characteristics and evaluating carbon’s environmental role. This makes the measurements relevant to climate-related aerosol research as well as routine air-quality investigations.