Demonstration of Temperature Dependent Energy Migration in Dual-Mode YVO4: Ho3+/Yb3+ Nanocrystals for Low Temperature Thermometry

Mahata, Manoj Kumar; Koppe, Tristan; Kumar, Kaushal; Hofsäß, H.; Vetter, U.

doi:10.1038/srep36342

Cited by 46 publications

(23 citation statements)

References 42 publications

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“…According to the level scheme included in Figure , this result suggests that the large thermal sensitivity of 690 nm excited Er‐Yb@Yb‐Tm core/shell NPs is only achieved when the 3 H 5 level of Tm 3+ ions is contributing to the overall emission spectrum and/or when the 3 H 5 (Tm 3+ ); 3 F 5/2 (Yb 3+ ) → 3 H 6 (Tm 3+ ); 3 F 5/2 (Yb 3+ ) ET process is involved. Previous works have demonstrated that the ratiometric thermal sensitivity of rare earth doped NPs is based either on the temperature dependence of ET efficiency between different rare earth ions or on the different temperature quenching rate of the different rare earth ions . In our particular case, both effects could be contributing to the superior ratiometric thermal sensitivity of our Er‐Yb@Yb‐Tm core/shell NPs.…”

Section: Resultsmentioning

confidence: 79%

In Vivo Subcutaneous Thermal Video Recording by Supersensitive Infrared Nanothermometers

Ximendes

Rocha

Sales

et al. 2017

Adv Funct Materials

169

119

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Some of the old and unrealizable dreams of biomedicine have become possible thanks to the appearance of novel advanced materials such as luminescent nanothermometers, nanoparticles capable of providing a contactless thermal reading through their light emission properties. Luminescent nanothermometers have already been demonstrated to be capable of in vivo subcutaneous punctual thermal reading but their real application as diagnosis tools still requires demonstrating their actual capacity for the acquisition of in vivo, time-resolved subcutaneous thermal images. The transfer from 1D to 2D subcutaneous thermal sensing is blocked in the last years mainly due to the lack of high sensitivity luminescent nanothermometers operating in the infrared biological windows. This work demonstrates how core/shell engineering, in combination with selective rare earth doping, can be used to develop supersensitive infrared luminescent nanothermometers. Erbium, thulium, and ytterbium core-shell LaF 3 nanoparticles, operating within the biological windows, provide thermal sensitivities as large as 5% °C −1 . This "record" sensitivity has allowed for the final acquisition of subcutaneous thermal videos of a living animal. Subsequent analysis of thermal videos allows for an unequivocal determination of intrinsic properties of subcutaneous tissues, opening the venue to the development of novel thermal imaging-based diagnosis tools.

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Section: Resultsmentioning

confidence: 79%

In Vivo Subcutaneous Thermal Video Recording by Supersensitive Infrared Nanothermometers

Ximendes

Rocha

Sales

et al. 2017

Adv Funct Materials

169

119

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“…Therefore, luminescence thermometry has become an important part of metrology and is evolving rapidly. Evidence for that is the fact that more than 100 luminescence materials for this application have already been identified and reported (see reviews [ 6 , 7 , 8 ] and references therein) while new prospective compounds are emerging on a regular basis [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides

Mykhaylyk

Kraus

Zhydachevskyy

et al. 2020

Sensors

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Luminescence methods for non-contact temperature monitoring have evolved through improvements of hardware and sensor materials. Future advances in this field rely on the development of multimodal sensing capabilities of temperature probes and extend the temperature range across which they operate. The family of Cr-doped oxides appears particularly promising and we review their luminescence characteristics in light of their application in non-contact measurements of temperature over the 5–300 K range. Multimodal sensing utilizes the intensity ratio of emission lines, their wavelength shift, and the scintillation decay time constant. We carried out systematic studies of the temperature-induced changes in the luminescence of the Cr3+-doped oxides Al2O3, Ga2O3, Y3Al5O12, and YAlO3. The mechanism responsible for the temperature-dependent luminescence characteristic is discussed in terms of relevant models. It is shown that the thermally-induced processes of particle exchange, governing the dynamics of Cr3+ ion excited state populations, require low activation energy. This then translates into tangible changes of a luminescence parameter with temperature. We compare different schemes of temperature sensing and demonstrate that Ga2O3-Cr is a promising material for non-contact measurements at cryogenic temperatures. A temperature resolution better than ±1 K can be achieved by monitoring the luminescence intensity ratio (40–140 K) and decay time constant (80–300 K range).

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“…At this stage the obtained accuracy in temperature reading is worse than what is typically achieved by non-contact luminescence decay techniques that utilise conventional near room temperature sensors (±1 K or better) 31–34 . Hovewer, it is comparable with the accuracy demonstrated by the method when used for the measurements of cryogenic temperatures 35,36 . It is also expected that the accuracy can be significantly improved through the optimisation of hardware, detection method and data analysis.…”

Section: Discussionmentioning

confidence: 59%

Megahertz non-contact luminescence decay time cryothermometry by means of ultrafast PbI2 scintillator

Mykhaylyk

Kraus

Bobb

et al. 2019

Sci Rep

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Realtime in situ temperature monitoring in difficult experimental conditions or inaccessible environments is critical for many applications. Non-contact luminescence decay time thermometry is often the method of choice for such applications due to a favorable combination of sensitivity, accuracy and robustness. In this work, we demonstrate the feasibility of an ultrafast PbI 2 scintillator for temperature determination, using the time structure of X-ray radiation, produced by a synchrotron. The decay kinetics of the scintillations was measured over the 8–107 K temperature range using monochromatic pulsed X-ray excitation. It is found that lead iodide exhibits a very fast and intense scintillation response due to excitons and donor-acceptor pairs, with the fast decay component varying between 0.08 and 0.5 ns – a feature that can be readily exploited for temperature monitoring. The observed temperature dependence of the decay time is discussed in terms of two possible mechanisms of thermal quenching – transition over activation barrier and phonon-assisted escape. It is concluded that the latter provides a better fit to the experimental results and is consistent with the model of luminescence processes in PbI 2 . We evaluated the sensitivity and estimated the accuracy of the temperature determination as ca. ±6 K at 107 K, improving to ±1.4 K at 8 K. The results of this study prove the feasibility of temperature monitoring, using ultrafast scintillation of PbI 2 excited by X-ray pulses from a synchrotron, thus enabling non-contact in-situ cryothermometry with megahertz sampling rate.

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Demonstration of Temperature Dependent Energy Migration in Dual-Mode YVO4: Ho3+/Yb3+ Nanocrystals for Low Temperature Thermometry

Cited by 46 publications

References 42 publications

In Vivo Subcutaneous Thermal Video Recording by Supersensitive Infrared Nanothermometers

In Vivo Subcutaneous Thermal Video Recording by Supersensitive Infrared Nanothermometers

Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides

Megahertz non-contact luminescence decay time cryothermometry by means of ultrafast PbI2 scintillator

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