Praseodymium-Doped Nanoparticles: Candidates for Near-Infrared-II Double- and Single-Band Nanothermometry
Why this work is in the frame
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Bibliographic record
Abstract
Luminescent nanothermometers with high spatial and thermal resolution are desirable for a wide range of temperature-sensing applications. Lanthanide-doped nanoparticles can be excited by and emit light in the near-infrared (NIR) region, rendering them ideal candidates for NIR nanothermometry. Pr 3+ has demonstrated thermal sensing ability in the NIR region but only when excited by UV–visible light. Here, we propose a series of NIR-I excited Pr 3+, Ho 3+, and Yb 3+ -doped NaGdF 4 core/multishell nanoparticles for double- and single-band ratiometric nanothermometry operating in the NIR-II region. Thermal sensing ability was demonstrated in organic and aqueous dispersions as well as for powders. The S r based on the Pr 3+ 1 G 4 → 3 H 5 and Ho 3+ 5 I 6 → 5 I 8 radiative transitions reached 2.4% °C –1 at 40 °C, while the maximal S r obtained using the single-band Pr 3+ emission was 0.8% °C –1 at 10 °C. These findings demonstrate the promise of Pr 3+ -doped nanoparticles as NIR-NIR nanothermometers for thermal sensing applications.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it