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Journal articles on the topic 'Ratiometric temperature measurement'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Mucignat, Claudio, Thomas Rösgen, and Ivan Lunati. "LIF Thermometry With A sCMOS Color Camera And Multiple Dyes." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–14. http://dx.doi.org/10.55037/lxlaser.21st.162.

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We propose a method to perform accurate temperature measurements by means of Laser Induced Fluorescence (LIF). We use a sCMOS color camera and a 2-dye solution based on RuPhen, excited in the blue part of the visible spectrum. By changing the relative concentration of the dyes we can manipulate the color channels temperature sensitivity, which allows us to apply a laser power correction which is robust and less affected by image noise compared to convectional ratiometric approaches. Another advantage is that the overall temperature sensitivity is only partially reduces compared to the one of R

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Antić, Željka, K. Prashanthi, Sanja Kuzman, et al. "Ratiometric temperature measurement using negative thermal quenching of intrinsic BiFeO3 semiconductor nanoparticles." RSC Adv. 10 (April 15, 2020): 16982. https://doi.org/10.5281/zenodo.3900972.

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Manuscript published in the Open Access Journal: Željka Antić, K. Prashanthi, Sanja Kuzman, Jovana Peri&scaron;a, Zoran Ristić, V. R. Palkarc and Miroslav D. Dramićanin, Ratiometric temperature measurement using negative thermal quenching of intrinsic BiFeO<sub>3</sub> semiconductor nanoparticles, RSC Adv., 2020, 10, 16982. https://doi.org/10.1039/D0RA01896A A strategy for optical nanothermometry using the negative thermal quenching behavior of intrinsic BiFeO3 semiconductor nanoparticles has been reported here. X-ray diffraction measurement shows polycrystalline BiFeO3 nanoparticles with a rh

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XIN, Shi-jie, and Lei DING. "High-precision multi-reference ratiometric temperature measurement system." Optics and Precision Engineering 29, no. 5 (2021): 1115–26. http://dx.doi.org/10.37188/ope.20212905.1115.

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Li, Leipeng, Feng Qin, Yangdong Zheng, and Zhiguo Zhang. "Strategy for highly sensitive optical ratiometric temperature measurement." Optical Materials Express 9, no. 8 (2019): 3260. http://dx.doi.org/10.1364/ome.9.003260.

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5

Antić, Željka, K. Prashanthi, Sanja Kuzman, et al. "Ratiometric temperature measurement using negative thermal quenching of intrinsic BiFeO3 semiconductor nanoparticles." RSC Advances 10, no. 29 (2020): 16982–86. http://dx.doi.org/10.1039/d0ra01896a.

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Negative thermal quenching of intrinsic BiFeO<sub>3</sub> semiconductor nanoparticles for ratiometric luminescence thermometry with 2.5% K<sup>−1</sup> relative sensitivity and 0.2 K temperature resolution.

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Ćirić, Aleksandar, Jelena Aleksić, Tanja Barudžija, et al. "Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission." Nanomaterials 10, no. 4 (2020): 627. http://dx.doi.org/10.3390/nano10040627.

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The emission of Er3+ provides three combinations of emission bands suitable for ratiometric luminescence thermometry. Two combinations utilize ratios of visible emissions (2H11/2→4I15/2 at 523 nm/ 4S3/2→4I15/2 at 542 nm and 4F7/2→4I15/2 at 485 nm/ 4S3/2→4I15/2 at 545 nm), while emissions from the third combination are located in near-infrared, e.g., in the first biological window (2H11/2→4I13/2 at 793 nm/ 4S3/2→4I13/2 at 840 nm). Herein, we aimed to compare thermometric performances of these three different ratiometric readouts on account of their relative sensitivities, resolutions, and repea

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Kashanj, Sina, and David Nobes. "Enhancing Sensitivity And Quantifying Uncertainty Of Volumetric Two-Colour Two-Dye Laser-Induced Fluorescence Thermometry Of Aqueous Solutions." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–9. http://dx.doi.org/10.55037/lxlaser.21st.137.

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Laser-induced fluorescence (LIF) is a nonintrusive method for temperature field measurement in gaseous and liquid flow fields. There has been attempts to enhance the temperature sensitivity of this method mainly by applying two fluorescent dyes with opposite temperature sensitivity. While there has been advances in enhancing the temperature sensitivity of LIF thermometry in aqueous solutions, there factors that limits the enhancement of the temperature sensitivity. This work explores the factors that restricting the temperature sensitivity in the ratiometric systems using Fluorescein and Kiton

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Kamimura, Masao, Taiki Matsumoto, Satoru Suyari, Masakazu Umezawa та Kohei Soga. "Ratiometric near-infrared fluorescence nanothermometry in the OTN-NIR (NIR II/III) biological window based on rare-earth doped β-NaYF4 nanoparticles". Journal of Materials Chemistry B 5, № 10 (2017): 1917–25. http://dx.doi.org/10.1039/c7tb00070g.

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Li, Hao, Esmaeil Heydari, Yinyan Li, et al. "Multi-Mode Lanthanide-Doped Ratiometric Luminescent Nanothermometer for Near-Infrared Imaging within Biological Windows." Nanomaterials 13, no. 1 (2023): 219. http://dx.doi.org/10.3390/nano13010219.

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Owing to its high reliability and accuracy, the ratiometric luminescent thermometer can provide non-contact and fast temperature measurements. In particular, the nanomaterials doped with lanthanide ions can achieve multi-mode luminescence and temperature measurement by modifying the type of doped ions and excitation light source. The better penetration of the near-infrared (NIR) photons can assist bio-imaging and replace thermal vision cameras for photothermal imaging. In this work, we prepared core–shell cubic phase nanomaterials doped with lanthanide ions, with Ba2LuF7 doped with Er3+/Yb3+/N

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10

Ćirić, Aleksandar, Jelena Aleksić, Tanja Barudžija, et al. "Comparison of Three Ratiometric Temperature Readings from the Er3+ Upconversion Emission." Nanomaterials 10, no. 4 (2020): 627. https://doi.org/10.5281/zenodo.3899751.

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Manuscript published in the Open Access Journal: Ćirić, A.; Aleksić, J.; Barudžija, T.; Antić, Ž.; Đorđević, V.; Medić, M.; Peri&scaron;a, J.; Zeković, I.; Mitrić, M.; Dramićanin, M.D. Comparison of Three Ratiometric Temperature Readings from the Er<sup>3+</sup> Upconversion Emission. Nanomaterials 2020, 10, 627; https://doi.org/10.3390/nano10040627 This article belongs to the Special Issue Luminescent Rare-Earth-Based Nanomaterials The emission of Er3+ provides three combinations of emission bands suitable for ratiometric luminescence thermometry. Two combinations utilize ratios of visible em

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Muralidhara, Srinivasa, and Dilip Kothari. "Design, development, and qualification tests of prototype two-channel cryogenic temperature transmitter." AIP Advances 12, no. 3 (2022): 035213. http://dx.doi.org/10.1063/5.0055915.

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A two-channel prototype cryogenic temperature transmitter is developed using an ARM Cortex-M3 series precision analog microcontroller using a rapid prototyping method for use in indigenous developments. The developed prototype utilizes an Arduino compatible baseboard equipped with interfaces for programming/debugging. Additional circuits are fabricated, and embedded application software is developed and tested. The input circuit consists of a low-value high accuracy precision current source to excite the cryogenic temperature sensors of Resistance Temperature Detector (RTD) type and employs a

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12

Huang, Haoying, Ruijuan Qiu, Hongchao Yang, et al. "Advanced NIR ratiometric probes for intravital biomedical imaging." Biomedical Materials 17, no. 1 (2021): 014107. http://dx.doi.org/10.1088/1748-605x/ac4147.

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Abstract Near-infrared (NIR) fluorescence imaging technology (NIR-I region, 650–950 nm and NIR-II region, 1000–1700 nm), with deeper tissue penetration and less disturbance from auto-fluorescence than that in visible region (400–650 nm), is playing a more and more extensive role in the field of biomedical imaging. With the development of precise medicine, intelligent NIR fluorescent probes have been meticulously designed to provide more sensitive, specific and accurate feedback on detection. Especially, recently developed ratiometric fluorescent probes have been devoted to quantify physiologic

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Wang, Chuanxi, Yijun Huang, Huihui Lin, et al. "Gold nanoclusters based dual-emission hollow TiO2 microsphere for ratiometric optical thermometry." RSC Advances 5, no. 76 (2015): 61586–92. http://dx.doi.org/10.1039/c5ra13475g.

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The dual-emitting hollow TiO<sub>2</sub> microspheres are prepared and they show dual emission fluorescence with single-excitation, which could be used as nanosensors for accurate measurement of temperature over the wide temperature range (20–80 °C).

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Tang, Luping, Yangyang Zhang, Chen Liao, et al. "Eye-Resolvable Surface-Plasmon-Enhanced Fluorescence Temperature Sensor." Nanomaterials 12, no. 22 (2022): 4019. http://dx.doi.org/10.3390/nano12224019.

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Temperature sensors are widely used in important fields such as daily home, medical care, and aerospace as a commonly used device for measuring temperature. Traditional temperature sensors such as thermocouples, thermal resistances, and infrared sensors are technically mature; however, they have limitations in the application environment, temperature measurement range, and temperature measurement accuracy. An eye-resolvable surface plasmon-enhanced fluorescence temperature sensor based on dual-emission Ag@SiO2@CdS/ZnS composite nanoparticle film with multiple-parameter detectable signals and h

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Yu, Dechao, Huaiyong Li, Dawei Zhang, Qinyuan Zhang, Andries Meijerink, and Markus Suta. "One ion to catch them all: Targeted high-precision Boltzmann thermometry over a wide temperature range with Gd3+." Light: Science & Applications 10 (November 22, 2021): 236. https://doi.org/10.1038/s41377-021-00677-5.

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Ratiometric luminescence thermometry with trivalent lanthanide ions and their 4f<sup><em>n</em></sup> energy levels is an emerging technique for non-invasive remote temperature sensing with high spatial and temporal resolution. Conventional ratiometric luminescence thermometry often relies on thermal coupling between two closely lying energy levels governed by Boltzmann’s law. Despite its simplicity, Boltzmann thermometry with two excited levels allows precise temperature sensing, but only within a limited temperature range. While low temperatures slow down the nonradiative transitions r

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Trejgis, K., K. Ledwa, A. Bednarkiewicz, and L. Marciniak. "A single-band ratiometric luminescent thermometer based on tetrafluorides operating entirely in the infrared region." Nanoscale Advances 4, no. 2 (2022): 437–46. http://dx.doi.org/10.1039/d1na00727k.

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MIKHAL, Aleksander A., Dmitro V. MELESHCHUK, and Zygmunt Lech WARSZA. "APPLICATION OF THE HYBRID BALANCED RATIOMETRIC MEASUREMENT METHOD IN THE HIGH-PRECISION AC THERMOMETRY BRIDGES." Physics for Economy 3, no. 1 (2019): 29–40. http://dx.doi.org/10.7862/rf.2019.pfe.3.

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The paper article describes the circuit of an automatic AC bridge for high precision temperature measurements using a standard platinum SPRT sensor. An original method for measuring the impedance parameters of SPRT sensor which allows to carry out the measurement process without loss of accuracy, is described in detail. This measurement method is proposed to name as hybrid method. It is a combination of a balanced method for rough compensation of the circuit and a ratiometric method which accurately measures the ratio of two values of the imbalance signal, before and after its known change. Wi

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18

Diehl, Brett, Alberto Castro, Lars Jaquemetton, and Darren Beckett. "Thermal Calibration of Ratiometric, On-Axis Melt Pool Monitoring Photodetector System Using Tungsten Strip Lamp." Materials Evaluation 80, no. 4 (2022): 64–73. http://dx.doi.org/10.32548/2022.me-04271.

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In situ melt pool monitoring is a set of technologies widely deployed on industrial, metals-based laser powder bed fusion (LPBF) additive manufacturing (AM) systems. This study investigates the use of a calibrated tungsten ribbon lamp as a reference standard to calibrate a photodetector based, on-axis melt pool monitoring system. Calibration demonstrates two functions: (a) enable a reference for measuring and ensuring system repeatability, and (b) enable reference to physical temperature values based on the measured photodetector signals. The second function is explored in this paper. A regres

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Shilin, A. N., B. V. Mac, and I. A. Koptelova. "DIGITAL PYROMETER OF SPECTRAL RATIO." Kontrol'. Diagnostika, no. 285 (March 2022): 52–57. http://dx.doi.org/10.14489/td.2022.03.pp.052-057.

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The article provides a comparative analysis of the main optoelectronic pyrometers: radiation and spectral ratio. The main error of optoelectronic pyrometers is a methodological component, which is due to the inconstancy of the radiation coefficient of the surface of the material of the product, which depends on the material, the state of the surface of the material and temperature. When measuring temperature, it is difficult to take into account this dependence, since there are no analytical expressions. In practice, the radiation coefficient of the surface of the material of the product is de

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Hatta, A. M., Y. Semenova, G. Rajan, P. Wang, J. Zheng, and G. Farrell. "Analysis of temperature dependence for a ratiometric wavelength measurement system using SMS fiber structure based edge filters." Optics Communications 283, no. 7 (2010): 1291–95. http://dx.doi.org/10.1016/j.optcom.2009.11.020.

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21

Ding, Jiong, Suijun Yang, and Shuliang Ye. "A Fast-Multi-Channel Sub-Millikelvin Precision Resistance Thermometer Readout Based on the Round-Robin Structure." Measurement Science Review 18, no. 4 (2018): 138–46. http://dx.doi.org/10.1515/msr-2017-0020.

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Abstract The fast response multipoint high-precision temperature measurement is often necessary in many dynamical measurement fields and industrial applications. However, limited by the existing electric circuit architecture, either the AC or DC bridges have the shortcoming that the rates or precisions degenerate markedly in the multi-channel scanning mode. To overcome this disadvantage, a round-robin structural low-cost ratiometric resistance thermometer readout based on several commercial 32-bit sigma-delta analogue-to-digital converters (Σ-Δ ADCs) was presented in this article. The experime

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Zhao, Yongkun, Hongxia Zhang, Qingwen Jin, Dagong Jia, and Tiegen Liu. "Ratiometric Optical Fiber Dissolved Oxygen Sensor Based on Fluorescence Quenching Principle." Sensors 22, no. 13 (2022): 4811. http://dx.doi.org/10.3390/s22134811.

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In this study, a ratiometric optical fiber dissolved oxygen sensor based on dynamic quenching of fluorescence from a ruthenium complex is reported. Tris(4,7-diphenyl-1,10-phenanthrolin) ruthenium(II) dichloride complex (Ru(dpp)32+) is used as an oxygen-sensitive dye, and semiconductor nanomaterial CdSe/ZnS quantum dots (QDs) are used as a reference dye by mixing the two substances and coating it on the plastic optical fiber end to form a composite sensitive film. The linear relationship between the relative fluorescence intensity of the ruthenium complex and the oxygen concentration is describ

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Szymczak, Maja, Marcin Runowski, Przemyslaw Wozny, and Lukasz Marciniak. "Thermally Invariant, Highly Sensitive, Ratiometric Luminescent Manometry Based on Cr3+ Emission." ECS Meeting Abstracts MA2024-02, no. 51 (2024): 3582. https://doi.org/10.1149/ma2024-02513582mtgabs.

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Pressure measurement leveraging the spectral response of a luminophore, known as luminescence manometry, presents numerous significant advantages over alternative detection methods, including rapid and dynamic response, electrical passivity, minimal invasiveness, and the capability for remote readings. Despite its recognition since the 1970s[1], the technique exhibits certain limitations. The current mainstream approach, employing a spectral shift of the 2E→4A2 band in Al2O3:Cr3+, offers high precision readouts but lacks sensitivity independence. Moreover, two-dimensional mapping of pressure v

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McVicar, Nevin, Alex X. Li, Daniela F. Gonçalves, et al. "Quantitative Tissue Ph Measurement during Cerebral Ischemia Using Amine and Amide Concentration-Independent Detection (AACID) with MRI." Journal of Cerebral Blood Flow & Metabolism 34, no. 4 (2014): 690–98. http://dx.doi.org/10.1038/jcbfm.2014.12.

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Tissue pH is an indicator of altered cellular metabolism in diseases including stroke and cancer. Ischemic tissue often becomes acidic due to increased anaerobic respiration leading to irreversible cellular damage. Chemical exchange saturation transfer (CEST) effects can be used to generate pH-weighted magnetic resonance imaging (MRI) contrast, which has been used to delineate the ischemic penumbra after ischemic stroke. In the current study, a novel MRI ratiometric technique is presented to measure absolute pH using the ratio of CEST-mediated contrast from amine and amide protons: amine/amide

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Zaschepkina, Natalia, and Maxim Svyta. "Development of a functional model of the temperature meter." Ukrainian Metrological Journal, no. 1 (March 31, 2021): 53–59. http://dx.doi.org/10.24027/2306-7039.1.2021.228239.

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Thin-film platinum resistance thermometers of various designs and performance are widely used in various industries. The temperature measurement range of these sensors is from -200 °C to +600 °C. A functional model of a portable digital temperature meter in the range from -50 °C to +300 ℃ based on the L416 sensor type Pt100 is proposed. The optimal circuit solution for connecting the L416 sensor to the Winston measuring bridge was selected. The proposed circuit solution is suitable for power supply from autonomous DC sources, which allows for miniaturization of the device and contributes

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Ukhanov, K. Y., T. M. Flores, H. S. Hsiao, P. Mohapatra, C. H. Pitts, and R. Payne. "Measurement of cytosolic Ca2+ concentration in Limulus ventral photoreceptors using fluorescent dyes." Journal of General Physiology 105, no. 1 (1995): 95–116. http://dx.doi.org/10.1085/jgp.105.1.95.

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Several Ca-sensitive fluorescent dyes (fura-2, mag-fura-2 and Calcium Green-5N) were used to measure intracellular calcium ion concentration, Cai, accompanying light-induced excitation of Limulus ventral nerve photoreceptors. A ratiometric procedure was developed for quantification of Calcium Green-5N fluorescence. A mixture of Calcium Green-5N and a Ca-insensitive dye, ANTS, was injected in the cell and the fluorescence intensities of both dyes were used to calculate the spatial average of Cai within the light-sensitive R lobe of the photoreceptor. In dark-adapted photoreceptors, the initial

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Li, Sheng, Wenlong Guo, Minmin Xiao, et al. "Rapid and Sensitive Diagnosis of COVID-19 Using an Electricity-Free Self-Testing System." Biosensors 13, no. 2 (2023): 180. http://dx.doi.org/10.3390/bios13020180.

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Rapid and sensitive detection of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is essential for early diagnosis and effective treatment. Nucleic acid testing has been considered the gold standard method for the diagnosis of COVID-19 for its high sensitivity and specificity. However, the polymerase chain reaction (PCR)-based method in the central lab requires expensive equipment and well-trained personnel, which makes it difficult to be used in resource-limited settings. It highlights the need for a sensitive and simple assay that all

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May-Arrioja, Daniel A., Miguel A. Fuentes-Fuentes, Iván Hernández-Romano, Rodolfo Martínez-Manuel, and Natanael Cuando-Espitia. "Ratiometric Temperature Sensing Using Highly Coupled Seven-Core Fibers." Sensors 23, no. 1 (2023): 484. http://dx.doi.org/10.3390/s23010484.

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In this paper, a ratiometric approach to sensing temperature variations is shown using specialty fiber optic devices. We analyzed the transmission response of cascaded segments of multicore fibers (MCFs), and dissimilar lengths were found to generate an adequate scheme for ratiometric operation. The perturbation of optical parameters in the MCFs translates to a rich spectral behavior in which some peaks increase their intensity while others decrease their intensity. Thus, by selecting opposite-behavior peaks, highly sensitive ratiometric measurements that provide robustness against spurious fl

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Mazza, Mercedes M. A., and Françisco M. Raymo. "Structural designs for ratiometric temperature sensing with organic fluorophores." Journal of Materials Chemistry C 7, no. 18 (2019): 5333–42. http://dx.doi.org/10.1039/c9tc00993k.

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Knisley, Stephen B., Robert K. Justice, Wei Kong, and Philip L. Johnson. "Ratiometry of transmembrane voltage-sensitive fluorescent dye emission in hearts." American Journal of Physiology-Heart and Circulatory Physiology 279, no. 3 (2000): H1421—H1433. http://dx.doi.org/10.1152/ajpheart.2000.279.3.h1421.

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Transmembrane voltage-sensitive fluorescence measurements are limited by baseline drift that can obscure changes in resting membrane potential and by motion artifacts that can obscure repolarization. Voltage-dependent shift of emission wavelengths may allow reduction of drift and motion artifacts by emission ratiometry. We have tested this for action potentials and potassium-induced changes in resting membrane potential in rabbit hearts stained with di-4-ANEPPS [Pyridinium, 4-(2-(6-(dibutylamino)-2-naphthalenyl) ethenyl)-1-(3-sulfopropyl)-, hydroxide, inner salt] using laser excitation (488 nm

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Cuando-Espitia, Natanael, Andrés Camarillo-Avilés, Daniel A. May-Arrioja, Iván Hernández-Romano, and Miguel Torres-Cisneros. "Highly Coupled Seven-Core Fiber for Ratiometric Anti-Phase Sensing." Sensors 23, no. 16 (2023): 7241. http://dx.doi.org/10.3390/s23167241.

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A ratiometric fiber optic temperature sensor based on a highly coupled seven-core fiber (SCF) is proposed and experimentally demonstrated. A theoretical analysis of the SCF’s sinusoidal spectral response in transmission configuration is presented. The proposed sensor comprises two SCF devices exhibiting anti-phase transmission spectra. Simple fabrication of the devices is shown by just splicing a segment of a 2 cm long SCF between two single-mode fibers (SMFs). The sensor proved to be robust against light source fluctuations, as a standard deviation of 0.2% was registered in the ratiometric me

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Iraniparast, Mahshid, Berney Peng, and Igor Sokolov. "Towards the Use of Individual Fluorescent Nanoparticles as Ratiometric Sensors: Spectral Robustness of Ultrabright Nanoporous Silica Nanoparticles." Sensors 23, no. 7 (2023): 3471. http://dx.doi.org/10.3390/s23073471.

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Here we address an important roadblock that prevents the use of bright fluorescent nanoparticles as individual ratiometric sensors: the possible variation of fluorescence spectra between individual nanoparticles. Ratiometric measurements using florescent dyes have shown their utility in measuring the spatial distribution of temperature, acidity, and concentration of various ions. However, the dyes have a serious limitation in their use as sensors; namely, their fluorescent spectra can change due to interactions with the surrounding dye. Encapsulation of the d, e in a porous material can solve

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Fanizza, Elisabetta, Haiguang Zhao, Simona De Zio, et al. "Encapsulation of Dual Emitting Giant Quantum Dots in Silica Nanoparticles for Optical Ratiometric Temperature Nanosensors." Applied Sciences 10, no. 8 (2020): 2767. http://dx.doi.org/10.3390/app10082767.

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Accurate temperature measurements with a high spatial resolution for application in the biomedical fields demand novel nanosized thermometers with new advanced properties. Here, a water dispersible ratiometric temperature sensor is fabricated by encapsulating in silica nanoparticles, organic capped PbS@CdS@CdS “giant” quantum dots (GQDs), characterized by dual emission in the visible and near infrared spectral range, already assessed as efficient fluorescent nanothermometers. The chemical stability, easy surface functionalization, limited toxicity and transparency of the silica coating represe

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Peerzade, Saquib, Nadezhda Makarova, and Igor Sokolov. "Ultrabright Fluorescent Silica Nanoparticles for Dual pH and Temperature Measurements." Nanomaterials 11, no. 6 (2021): 1524. http://dx.doi.org/10.3390/nano11061524.

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The mesoporous nature of silica nanoparticles provides a novel platform for the development of ultrabright fluorescent particles, which have organic molecular fluorescent dyes physically encapsulated inside the silica pores. The close proximity of the dye molecules, which is possible without fluorescence quenching, gives an advantage of building sensors using FRET coupling between the encapsulated dye molecules. Here we present the use of this approach to demonstrate the assembly of ultrabright fluorescent ratiometric sensors capable of simultaneous acidity (pH) and temperature measurements. F

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Sorenson, Alanna E., and Patrick M. Schaeffer. "Real-Time Temperature Sensing Using a Ratiometric Dual Fluorescent Protein Biosensor." Biosensors 13, no. 3 (2023): 338. http://dx.doi.org/10.3390/bios13030338.

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Accurate temperature control within biological and chemical reaction samples and instrument calibration are essential to the diagnostic, pharmaceutical and chemical industries. This is particularly challenging for microlitre-scale reactions typically used in real-time PCR applications and differential scanning fluorometry. Here, we describe the development of a simple, inexpensive ratiometric dual fluorescent protein temperature biosensor (DFPTB). A combination of cycle three green fluorescent protein and a monomeric red fluorescent protein enabled the quantification of relative temperature ch

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Nurtdinova, L. A., A. V. Leontyev, D. K. Zharkov, et al. "Temperature measurements based on a composite of nanosized phosphors [Ru(dipy)<sub>3</sub>]<sup>2+</sup>@SiO<sub>2</sub> and NaYF<sub>4</sub>:Eu,Gd." Известия Российской академии наук. Серия физическая 87, no. 12 (2023): 1730–34. http://dx.doi.org/10.31857/s0367676523702988.

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The results of temperature testing of the two-phosphor composite ([Ru(dipy)3]2+@SiO2 and NaYF4:Eu,Gd) are presented in order to assess the prospects for its further application as a luminescent thermal sensor in the range of 200–310 K. By calibrating the temperature dependences of individual spectral components of the emission produced under irradiation by cw laser at 405 nm, the possibilities of temperature sensing by means of ratiometric method are analyzed in four different spectral ranges of the composite’s visible luminescence.

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Taleb, Kaoutar, Guillaume Castanet, and Alexandre Labergue. "Characterization Of The Electrothermal Conversion Mechanisms Of A Plasma Actuator For Icing Control." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–15. http://dx.doi.org/10.55037/lxlaser.21st.207.

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The characterization of a new icing protection system, specifically a dielectric barrier discharge (DBD) plasma actuator, is conducted in this study. The system operates by establishing an AC high voltage between two electrodes arranged on opposite sides of a dielectric material. This setup generates a plasma on the dielectric surface, which in turn induces a significant temperature rise (about 30°C) in both the dielectric surface and the surrounding air. To gain a comprehensive understanding of the electrothermal conversion mechanisms involved in the discharge, a Planar Laser Induced Fluoresc

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Mao, Deqi, Xiaogang Liu, Qinglong Qiao, et al. "Coumarin 545: an emission reference dye with a record-low temperature coefficient for ratiometric fluorescence based temperature measurements." Analyst 140, no. 4 (2015): 1008–13. http://dx.doi.org/10.1039/c4an02075h.

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Skwierczyńska, Małgorzata, Natalia Stopikowska, Piotr Kulpiński, Magdalena Kłonowska, Stefan Lis, and Marcin Runowski. "Ratiometric Upconversion Temperature Sensor Based on Cellulose Fibers Modified with Yttrium Fluoride Nanoparticles." Nanomaterials 12, no. 11 (2022): 1926. http://dx.doi.org/10.3390/nano12111926.

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In this study, an optical thermometer based on regenerated cellulose fibers modified with YF3: 20% Yb3+, 2% Er3+ nanoparticles was developed. The presented sensor was fabricated by introducing YF3 nanoparticles into cellulose fibers during their formation by the so-called Lyocell process using N-methylmorpholine N-oxide as a direct solvent of cellulose. Under near-infrared excitation, the applied nanoparticles exhibited thermosensitive upconversion emission, which originated from the thermally coupled levels of Er3+ ions. The combination of cellulose fibers with upconversion nanoparticles resu

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Zhang, Qixuan, Jumpei Ueda, and Setsuhisa Tanabe. "Double-Mode Thermometer Based on Photoluminescence of YbGd2Al2Ga3O12: Cr3+ Operating in the Biological Windows." Applied Sciences 14, no. 8 (2024): 3357. http://dx.doi.org/10.3390/app14083357.

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A Near-Infrared (NIR) ratiometric luminescence thermometer with the composition of Yb1Gd2Al1.98Cr0.02Ga3O12 was prepared and studied. When excited by 660 nm in the first biological transparent window (BTW), the sample shows a peak structure of around 1000 nm due to the 2F5/2 → 2F7/2 transitions of Yb3+ via the energy transfer process from Cr3+. Due to the Boltzmann distribution, the Yb3+ PL intensities in the shorter wavelength side (i.e., 1st BTW) and longer wavelength side (i.e., 2nd BTW) exhibit opposite temperature dependencies. The luminescence intensity ratio (LIR) of Yb3+ in shorter and

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Dantelle, Géraldine, Valérie Reita та Cécile Delacour. "Luminescent Yb3+,Er3+-Doped α-La(IO3)3 Nanocrystals for Neuronal Network Bio-Imaging and Nanothermometry". Nanomaterials 11, № 2 (2021): 479. http://dx.doi.org/10.3390/nano11020479.

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Dual-light emitting Yb3+,Er3+-codoped α-La(IO3)3 nanocrystals, known to exhibit both second harmonic signal and photoluminescence (PL), are evaluated as optical nanoprobes and thermal sensors using both conventional microscopes and a more sophisticated micro-PL setup. When loaded in cortical and hippocampal neurons for a few hours at a concentration of 0.01 mg/mL, a visible PL signal arising from the nanocrystals can be clearly detected using an epifluorescent conventional microscope, enabling to localize the nanocrystals along the stained neurons and to record PL variation with temperature of

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Bucher, P., R. A. Yetter, F. L. Dryer, T. P. Parr, and D. M. Hanson-Parr. "PLIF species and ratiometric temperature measurements of aluminum particle combustion in O2, CO2 and N2O oxidizers, and comparison with model calculations." Symposium (International) on Combustion 27, no. 2 (1998): 2421–29. http://dx.doi.org/10.1016/s0082-0784(98)80094-5.

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Buckens, Pierre F., Jan S. Iwanczyk, Yuzhong J. Wang, and Richard S. Marano. "Thickness Gauging of Organic Films on Large Plastic Body Parts With an Xrf Probe Based on a Roomtemperature Mercuric Iodide Detector." Advances in X-ray Analysis 37 (1993): 395–404. http://dx.doi.org/10.1154/s0376030800015913.

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AbstractThe variability of adhesion promoter (primer) film thickness has been identified at Ford Motor Company as an important factor in maintaining the quality of paint on exterior plastic body parts. XRF offers unique advantages for non-destructive film monitoring. Monitoring of large parts for process control requires a non-contact approach using a small mobile probe. Previous attempts to implement a practical XRF gauging probe have been hampered by the choice of available x-ray detection technologies; proportional counters cannot resolve the layer's fluorescent lines properly and suffer fr

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Szymczak, Maja, Julia Jaśkielewicz, Marcin Runowski, Junpeng Xue, Sebastian Mahlik, and Lukasz Marciniak. "Multi-Modal Luminescence Manometer Based on Cr³⁺ Ions Luminescence in Doped Li₃Sc₂(PO₄)₃." ECS Meeting Abstracts MA2024-02, no. 67 (2024): 4774. https://doi.org/10.1149/ma2024-02674774mtgabs.

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The necessity for precise pressure monitoring, coupled with the capability to monitor pressure values in real-time, is paramount. Consequently, recent years have witnessed a notable surge in research aimed at enhancing the quality of pressure sensors, as well as the exploration of novel technological solutions, owing to the rapid advancement in process automation. Sensors leveraging the luminescence response of luminophores show great promise, as evidenced by numerous studies showcasing the remarkable potential of luminescent thermometers. The luminescence characteristics of phosphors are infl

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Preston, Tom. "Existing and Emerging Technologies for Measuring Stable Isotope Labelled Retinol in Biological Samples: Isotope Dilution Analysis of Body Retinol Stores." International Journal for Vitamin and Nutrition Research 84, Supplement 1 (2014): 30–39. http://dx.doi.org/10.1024/0300-9831/a000186.

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This paper discusses some of the recent improvements in instrumentation used for stable isotope tracer measurements in the context of measuring retinol stores, in vivo. Tracer costs, together with concerns that larger tracer doses may perturb the parameter under study, demand that ever more sensitive mass spectrometric techniques are developed. GCMS is the most widely used technique. It has high sensitivity in terms of sample amount and uses high resolution GC, yet its ability to detect low isotope ratios is limited by background noise. LCMSMS may become more accessible for tracer studies. Its

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Karuppiah, Krishnaveni, Iniya Murugan, Murugesan Sepperumal, and Siva Ayyanar. "A dual responsive probe based on bromo substituted salicylhydrazone moiety for the colorimetric detection of Cd2+ ions and fluorometric detection of F‒ ions: Applications in live cell imaging." International Journal of Bioorganic and Medicinal Chemistry 1, no. 1 (2021): 1–9. http://dx.doi.org/10.55124/bmc.v1i1.20.

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A new fluorimetric and colorimetric dual-mode probe, 4-bromo-2-(hydrazonomethyl) phenol (BHP) has been synthesized and successfully utilized for the recognition of Cd2+/F‒ ions in DMSO/H2O (9:1, v/v) system. The probe displays dual channel of detection via fluorescence enhancement and colorimetric changes upon binding with F‒ and Cd2+ ions respectively. The Job’s plot analysis, ESI-MS studies, Density Functional Theoretical (DFT) calculations, 1H NMR and 19F NMR titration results were confirmed and highly supported the 1:1 binding stoichiometry of the probe was complexed with Cd2+/F‒ ions. Fur

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Zhao, Suxin, Kaihang Sang, Ye Yang, et al. "Visible TADF and NIR Quenching Emission of Chromium Activated Zirconium‐Halide Perovskite Toward Ultra‐High‐Sensitive Ratiometric Fluorescent Thermometer." Advanced Optical Materials, April 19, 2024. http://dx.doi.org/10.1002/adom.202302979.

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AbstractWith the development of science and technology, the measurement of temperature is receiving more and more attention. However, ratiometric fluorescent thermometers based on thermally coupled energy levels remain challenging because of their low relative sensitivity (Sr). In this work, chromium activated zirconium‐halide perovskite Cs2ZrCl6 microcrystals are successfully synthesized via a simple co‐precipitation method at room temperature. Interestingly, the host Cs2ZrCl6 exhibits reverse thermal quenching due to its thermal‐activated delayed fluorescence (TADF) behavior, while the Cr3+

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Liu, Xuan, Jian Hou, Jingmei Ou, and Manling Yan. "Novel Single Emissive Component Tridurylboron‐TPU Solid Polymer Ratiometric Fluorescence Thermometers." Small, December 10, 2023. http://dx.doi.org/10.1002/smll.202308398.

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AbstractTemperature measurements with high spatial resolution and accuracy can provide crucial data for understanding the changing process of microregion. Non‐contact ratiometric fluorescence thermometers have received widespread attention for their sensitivity and interference resistibility. However, polymer and organic dye thermometers with such ratiometric fluorescence are very rare, and their applicability and processability are limited. In this study, novel tridurylboron compounds PPB1, PPB2, and PPB3 are designed and synthesized. They exhibit significant temperature responsive ratiometri

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Song, Hao, Junheng Yuan, Lulu Han, Dedan Mu, Xuhui Xu, and Peng Zhang. "Te4+ doped zero-dimensional perovskite for dual-mode thermometry in electronic devices†." Journal of Materials Chemistry C, 2025. https://doi.org/10.1039/d4tc04517c.

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Ratiometric and lifetime-technology temperature measurement are prominent techniques in the field of optical thermometry due to their advantages of visual detection and high sensitivity in temperature precision, respectively. However, the...

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Zhou, Yujiao, Gilles Ledoux, Laurence Bois, et al. "Er³⁺ Doped Nanoparticles as Upconversion Thermometer Probe in Confined Fluids." Physical Chemistry Chemical Physics, 2023. http://dx.doi.org/10.1039/d3cp02218h.

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Non-Contact temperature measurement at the nanoscale by photoluminescence using a nano-sensor in a confined fluid has been developed in the present work. Upconversion lanthanides-doped nanoparticles applied to ratiometric thermometry could...

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