Re4+ Luminescence as a Highly Sensitive Alternative to Ruby for Optical Pressure Sensing
Abstract
Luminescence-based remote pressure sensing provides a powerful approach for pressure determination under conditions where conventional contact methods are difficult to implement. Although ruby remains the undisputed gold standard among luminescent pressure indicators, its relatively low pressure sensitivity and susceptibility to temperature variations represent important limitations. Therefore, in this work, Cs2HfCl6:Re4+ is proposed as an alternative luminescent pressure indicator exhibiting a 15-fold higher pressure sensitivity (6.93 nm GPa-1) than ruby while maintaining a comparable thermal sensitivity, making it a particularly attractive material for optical manometry. Furthermore, Cs2HfCl6:Re4+ enables ratiometric pressure readout, providing a high relative pressure sensitivity reaching 175.1% GPa-1. To the best of our knowledge, this work represents the first demonstration of Re4+ luminescence for pressure sensing, introducing a new class of luminescent pressure indicators and opening new opportunities for the development of highly sensitive optical manometers based on Re4+-activated materials.
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BibTeX
@misc{wu2026luminescence,
title = {{Re4+ Luminescence as a Highly Sensitive Alternative to Ruby for Optical Pressure Sensing}},
author = {Yeshan Wu and Maja Szymczak and Lukasz Marciniak and Yifei Yu and Shuailing Ma and Tian Cui and Laihui Luo and Peng Du},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.15105},
eprint = {2609.15105},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.15105},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Re4+ Luminescence as a Highly Sensitive Alternative to Ruby for Optical Pressure Sensing
AU - Yeshan Wu
AU - Maja Szymczak
AU - Lukasz Marciniak
AU - Yifei Yu
AU - Shuailing Ma
AU - Tian Cui
AU - Laihui Luo
AU - Peng Du
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2609.15105
UR - https://arxiv.org/abs/2609.15105
AB - Luminescence-based remote pressure sensing provides a powerful approach for pressure determination under conditions where conventional contact methods are difficult to implement. Although ruby remains the undisputed gold standard among luminescent pressure indicators, its relatively low pressure sensitivity and susceptibility to temperature variations represent important limitations. Therefore, in this work, Cs2HfCl6:Re4+ is proposed as an alternative luminescent pressure indicator exhibiting a 15-fold higher pressure sensitivity (6.93 nm GPa-1) than ruby while maintaining a comparable thermal sensitivity, making it a particularly attractive material for optical manometry. Furthermore, Cs2HfCl6:Re4+ enables ratiometric pressure readout, providing a high relative pressure sensitivity reaching 175.1% GPa-1. To the best of our knowledge, this work represents the first demonstration of Re4+ luminescence for pressure sensing, introducing a new class of luminescent pressure indicators and opening new opportunities for the development of highly sensitive optical manometers based on Re4+-activated materials.
ER -