A universal strategy to enhance the absolute sensitivity for temperature detection in bright Er3+/Yb3+ doped double perovskite Gd2ZnTiO6 phosphors

2020 ◽  
Vol 4 (4) ◽  
pp. 1182-1191 ◽  
Author(s):  
Youfusheng Wu ◽  
Shouliang Xu ◽  
Zhongliang Xiao ◽  
Fengqin Lai ◽  
Jianhui Huang ◽  
...  
Keyword(s):  
Double Perovskite ◽  
Temperature Sensing ◽  
Absolute Sensitivity ◽  
Sensing Applications ◽  
Temperature Detection ◽  
The Absolute

We report a universal strategy consisting of I1/I2 and I2/I1 parts to enhance the SA for temperature sensing applications.

A reversible thermo-responsive 2D Zn(ii) coordination polymer as a potential self-referenced luminescent thermometer

2020 ◽  
Vol 8 (7) ◽  
pp. 2525-2532 ◽  
Author(s):  
Lincy Tom ◽  
M. R. P. Kurup
Keyword(s):  
Coordination Polymer ◽  
Temperature Sensing ◽  
Two Dimensional ◽  
Sensing Applications

A two dimensional Zn(ii) coordination polymer with exceptional reversible luminescence thermochromic behavior has been synthesized for temperature sensing applications.

scholarly journals On how the mechanochemical and co-precipitation synthesis method changes the sensitivity and operating range of the Ba2Mg1-xEuxWO6 optical thermometer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Quan T. H. Vu ◽  
Bartosz Bondzior ◽  
Dagmara Stefańska ◽  
Natalia Miniajluk-Gaweł ◽  
Maciej J. Winiarski ◽  
...  
Keyword(s):  
Density Functional ◽  
Synthesis Method ◽  
Double Perovskite ◽  
Relative Sensitivity ◽  
The Novel ◽  
Temperature Detection ◽  
The Density Functional Theory ◽  
Precision Temperature ◽  
Optical Thermometer ◽  
Co Precipitation

AbstractThe suitability of Ba2MgWO6 (BMW) double perovskite doped with Eu3+ for the construction of an optical thermometer was tested. It has been shown that by controlling the conditions of BMW synthesis, the sensitivity of the optical thermometer and the useful range of its work can be changed. Pure BMW and doped with Eu3+ samples were prepared using the mechano-chemical and co-precipitation methods. Both the absolute sensitivity and the relative sensitivity in relation to the synthesis route were estimated. The findings proved that the relative sensitivity can be modulated from 1.17%K−1 at 248 K, to 1.5%K−1 at 120 K for the co-precipitation and the mechanochemical samples, respectively. These spectacular results confirm the applicability of the Ba2MgWO6: Eu3+ for the novel luminescent sensors in high-precision temperature detection devices. The density-functional theory was applied to elucidate the origin of the host emission.

Assessment of MEMS Vibration Energy Harvesting for High Temperature Sensing Applications

2015 ◽  
Vol 2015 (HiTEN) ◽  
pp. 000261-000265
Author(s):  
S T Riches ◽  
K Doyle ◽  
N Tebbit ◽  
Y Jia ◽  
A Seshia
Keyword(s):  
High Temperature ◽  
Energy Harvesting ◽  
Temperature Sensing ◽  
Vibration Energy ◽  
Mems Devices ◽  
Vibration Energy Harvesting ◽  
High Temperature Electronics ◽  
Sensing Applications ◽  
Aero Engine ◽  
Energy Harvesting Devices

Distributed electronics for improving the accuracy of sensing in harsh high temperature environments, such as aero-engine and down-well is a growing field, where reduced power input requirements in cabling and batteries is viewed a key enabler for accelerating the adoption of high temperature electronics. Although batteries are available that can operate up to 200°C, they offer limited life at high temperatures and are bulky, increasing the costs of deployment and maintenance. Cabling also adds weight and takes up space in limited access applications. Energy harvesting in-situ offers the opportunity to make a step change in the design of high temperature electronics modules and in expanding their possible range of applications; for example, in sensor systems for combustor and turbine monitoring in aero-engines. This paper covers an assessment of MEMS vibration energy harvesting technology for high temperature sensing applications. MEMS devices based on the principle of parametric resonance, using AlN on Silicon have been designed and fabricated, along with sourcing of high temperature components for rectification, impedance matching and energy storage. The MEMS devices have been packaged into ceramic chip carriers and measured for energy output from a random vibration profile representative of an aerospace application. The measured output from the MEMS vibration energy harvester is capable of providing sufficient power to be of interest for autonomous sensing applications. This paper reports on the performance of the MEMS vibration energy harvesting devices and their associated circuitry at room temperature and at temperatures of up to 150°C. The challenges remaining to develop robust energy harvesting devices that could be applied in aero-engine, down-well and other high temperature applications are described. This work has been carried out under the Innovate UK supported project HI-VIBE, in a collaboration between GE Aviation Systems – Newmarket and the University of Cambridge.

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