Frequency analysis of temperature-dependent interferometric signal for the measurement of the temperature coefficient of refractive index

Alternative fuels hold considerable promise as substitutes for petroleum diesel fuel. As such, biodiesel is a promising renewable fuel that has been developed and tested by a number of research groups. Quality control of this transportation fuel is of great significance to its commercialization. Conventional chromatographic and spectroscopic analytical methods are most commonly used for biodiesel characterization, in some cases yielding information detail beyond that needed for the determination of biodiesel quality. By contrast, less common methods, such as photothermal techniques, are well suited to characterize a wide range of transportation fuels. The complexities of photothermal and chemical analytical techniques are roughly similar, as are the costs. Photothermal methods are based on spectroscopic and thermophysical properties of the sample, an advantage with respect to ordinary chromatography and spectroscopy techniques. Furthermore, some photothermal techniques can be adapted for remote signal detection, which can be used for in situ analysis in fuel production for inline biodiesel quality inspection and control. Therefore, an overview and outlook of the photothermal characterization is of considerable interest. In this paper, the applications of photothermal techniques in the characterization of biodiesel, petroleum diesel fuels, and their blends are reviewed. The review includes thermophysical properties and correlations for fuels, determination of blend levels, and biodiesel stability investigations. After the review, discussion and perspective are presented for future improvement of photothermal characterization and industrial applications.

show abstract

Photothermal characterization of biodiesel and petroleum diesel fuels—A review and perspective

Shen

Michaelian

Gieleciak

et al. 2020

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Sensitivity enhancement of thermal lens spectrometry

Shen

et al. 2022

Journal of Applied Physics

View full text Add to dashboard Cite

Thermal lens spectrometry has been utilized in various applications, and in some application areas, high sensitivity is required. In this work, a mode-mismatched thermal lens configuration probing thermal lens twice was developed for sensitivity enhancement. Experimental results exhibited that doubled sensitivity was achieved with this configuration compared with that attained with a conventional one, which was consistent with the prediction of the theoretical model for thermal lens spectrometry. As a result of the consistency, the linear absorption (attenuation) coefficient of de-ionized water at 532.3 nm was directly measured with this configuration and the conventional one and found to be (4.90 ± 0.05) × 10−2 m−1 and (4.7 ± 0.2) × 10−2 m−1, respectively. The results are in good agreement with accepted literature values. Theoretical analysis revealed that the sensitivity enhancement with this configuration is greater than that by simply doubling the sample thickness in a conventional configuration.

show abstract

Wavefront sensing applied to determine the temperature dependence of the refractive index of liquids

Radhakrishnan¹,

Gallais²,

Monneret³

2019

Appl. Opt.

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Frequency analysis of temperature-dependent interferometric signal for the measurement of the temperature coefficient of refractive index

Cited by 3 publications

References 10 publications

Photothermal characterization of biodiesel and petroleum diesel fuels—A review and perspective

Photothermal characterization of biodiesel and petroleum diesel fuels—A review and perspective

Sensitivity enhancement of thermal lens spectrometry

Wavefront sensing applied to determine the temperature dependence of the refractive index of liquids

Contact Info

Product

Resources

About