Review of Photothermal Technique for Thermal Measurement of Micro-/Nanomaterials

Zhou, Jianjun; Xu, Shen; Liu, Jing

doi:10.3390/nano12111884

Cited by 11 publications

(5 citation statements)

References 47 publications

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“…Therefore, constrained by the high-speed rotation of rotating components in bearings and the complex working environment, traditional temperature measurement techniques have proved elusive in the monitoring process of bearing components. In this case, fiber-optic-based non-contact temperature monitoring methods have gradually gained popularity among researchers [22,23]. Smart et al [24] pioneered their application in tribology for measuring the lubricant film thickness of rollers and roll-to surfaces by measuring the natural intensity of fluorescence there or the fluorescence of particles dispersed in the oil.…”

Section: Introductionmentioning

confidence: 99%

Green-Emitting Carbon Quantum Dots: Highly Sensitive Temperature Sensing Probe in Nanocomposite and Lubrication System

Sun,

Yan,

Zhang

et al. 2024

Lubricants

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Carbon quantum dots (CQDs) have already demonstrated their utility as lubricant additives, and non-contact temperature sensing based on CQDs offers considerable potential for condition monitoring in mechanical, electrical, and other fields, as well as lubrication-temperature multifunctional applications in lubricants. In this paper, we have successfully synthesized and designed high-brightness carbon quantum dots/polyvinyl alcohol (PVA) temperature sensor thin film and dispersions of CQDs in a liquid paraffin lubrication system. Based on fluorescence intensity and the fluorescence intensity ratio, the carbon quantum dot/PVA film exhibited exponential temperature-dependent properties with a wide applicability range, a high goodness of fit (R2 > 0.99), and high relative thermal sensitivity (relative sensitivities of 1.74% K−1 and 1.39% K−1 for fluorescence intensity and fluorescence intensity ratio, respectively). In addition, based on the fluorescence intensity, the CQDs exhibited a wide temperature range (20–90 °C), a high goodness of fit (R2 > 0.99), and higher sensitivity (2.84% K−1) in a liquid paraffin lubrication system, which reflects the temperature responsive properties of carbon quantum dots as additives in lubrication systems. These findings provide convenient and effective possibilities for the sensing and monitoring of carbon quantum dots and their multifunctional applications under lubrication systems.

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Section: Introductionmentioning

confidence: 99%

Green-Emitting Carbon Quantum Dots: Highly Sensitive Temperature Sensing Probe in Nanocomposite and Lubrication System

Sun,

Yan,

Zhang

et al. 2024

Lubricants

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“…In this research, a photoacoustic signal amplitude intensity measurement is used. This idea is based on a number of successful test reports of measuring multilayer thin films with nm accuracy using modulated lasers and photothermal methods 29 . However, since the TOF measurement method is no longer used, another breakthrough is needed for imaging subsurface objects.…”

Section: Introductionmentioning

confidence: 99%

“…This idea is based on a number of successful test reports of measuring multilayer thin films with nm accuracy using modulated lasers and photothermal methods. 29 However, since the TOF measurement method is no longer used, another breakthrough is needed for imaging subsurface objects. In this research, a photoacoustic imaging technique based on Rosencwaig‐Gersho theory (RG Theory) is developed.…”

Section: Introductionmentioning

confidence: 99%

Development of non‐contact foreign body imaging base on photoacoustic signal intensity measurement

Setiawan,

Huang,

Mitrayana

2023

J Applied Clin Med Phys

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BackgroundIt is challenging to visually identify tiny and concealed foreign objects within the body due to their small size and subcutaneous location while they can cause infections.MethodsA non‐contact photoacoustic system based on Rosencwaig‐Gersho photoacoustic theory and dual modulator method is developed for detecting foreign objects in meat.ResultThe experiments conducted validate the successful development of this measurement technique with 10 μm spatial resolution and its corresponding mathematical model, demonstrating an 11% Mean Absolute Percentage Error (MAPE) in comparison to the experimental results. Dual modulator successfully regulates laser energy at MPE limit.ConclusionThe utilization of non‐contact photoacoustic signal intensity measurements enables the identification of foreign objects within the body. Further, the application of mathematical modelling can validate the measurement outcomes. These findings serve as a foundation for creating an affordable and straightforward foreign body detector.

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“…Considered as a promising spectrometric detection method [18][19][20] given its high sensitivity and quickness of measurement time, the PTL spectroscopy was applied in this work to investigate the impact of the optical window surface contamination on the determination of permanganate concentration in water. The accuracy of the PTL signal was analyzed based on the measurements performed for various samples with the same concentration prepared in tap and distilled water.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the quartz cuvette surface contamination used for permanganate quantification in tap water by photothermal lens spectroscopy

Soyeh,

Hannachi,

Sammouda

2023

Preprint

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In this work, the PhotoThermal Lens (PTL) spectroscopy was used to investigate the contamination effect of the quartz cuvette on the quantification of permanganate concentration in tap water at neutral pH. Different permanganate solutions were prepared at a concentration range from 0.2 µM to 10 µM. The PTL signal measurements performed for samples having the same permanganate concentration in tap water increase continuously. Contrary to the solutions prepared in distilled water where the PTL signal remains constant for all the measurements. Thus, it results from that the main cause of this behavior is related to the decomposition reaction of permanganate in tap water giving rise to manganese dioxide, which then will be adsorbed on the optical window surfaces of the quartz cuvette. The contribution of the adsorbed amount on the PTL signal was examined and its variation was described based on Langmuir model. To remove this contamination effect caused by the adsorption process, three 0.1 M acidic solutions (HCl, H2SO4 and H3PO4) were applied separately for the cleaning of the optical window surfaces. The obtained results show that 4 min is sufficient to reach a desorption rate higher than 90% whatever the used acid.

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Review of Photothermal Technique for Thermal Measurement of Micro-/Nanomaterials

Cited by 11 publications

References 47 publications

Green-Emitting Carbon Quantum Dots: Highly Sensitive Temperature Sensing Probe in Nanocomposite and Lubrication System

Green-Emitting Carbon Quantum Dots: Highly Sensitive Temperature Sensing Probe in Nanocomposite and Lubrication System

Development of non‐contact foreign body imaging base on photoacoustic signal intensity measurement

Investigation of the quartz cuvette surface contamination used for permanganate quantification in tap water by photothermal lens spectroscopy

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