Article
Engineering, Electrical & Electronic
Jeslin P. Issac, Sathya Priya Sugumar, Kavitha Arunachalam
Summary: This study reports the design of a self-balanced dual frequency band Dicke radiometer for medical microwave radiometry. The radiometer uses real-time calibration to eliminate the influence of various factors on temperature measurements and demonstrates stable measurements and immunity to ambient interference in different frequency bands.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Multidisciplinary
Sergey Dedyulin, Alexander Grzetic-Muffo, Siegfried Janz, Dan-Xia Xu, Shurui Wang, Martin Vachon, John Weber
Summary: In this paper, the improvements to the first prototype of Si ring-resonator thermometer were reported, including narrower ring resonances, different light polarization in the ring, and smaller-footprint probe housing. The second prototype was evaluated in a stirred liquid bath between 23°C and 80°C over the span of 11 months, and the full uncertainty budget for the packaged ring-resonator thermometer was presented for the first time. The combined 10-mK standard uncertainty included both the repeatability and an 11-month long-term stability component, indicating the potential for a commercial ring-resonator thermometer.
Review
Nanoscience & Nanotechnology
Masazumi Fujiwara, Yutaka Shikano
Summary: Diamond quantum thermometry utilizes the optical and electrical spin properties of color defect centers in diamonds, offering high precision and robustness, and can be operated over a wide temperature range and sensor spatial scale. It has applications in fields such as electronics and biology, allowing for nanoscale temperature measurements.
Article
Chemistry, Multidisciplinary
Hongqiang Li, Zhixuan An, Quanhua Mao, Shasha Zuo, Wei Zhu, Shanshan Zhang, Cheng Zhang, Enbang Li, Juan Daniel Prades Garcia
Summary: A waveguide Bragg grating (WBG) has been designed for temperature measurement, with two-sided WBG showing the ability to measure temperature changes within the range of 35-42 degrees Celsius with a measurement error of 0.1 degrees Celsius. This approach has the potential for application in wearable technology and human temperature measurement.
Article
Instruments & Instrumentation
Rene Eisermann, Stephan Krenek, Georg Winzer, Steffen Rudtsch
Summary: Photonics sensors utilizing silicon-based ring resonators enable purely optical contact thermometry with high reproducibility and uniformity. Through laser-based spectroscopy and stable temperature control, precise characterization of the sensors was achieved, providing temperature stability within a wide range. The use of a hydrogen cyanide reference gas cell allowed for in-situ correction of the wavelength, while the analysis of resonance peaks demonstrated high optical quality and temperature sensitivity.
TM-TECHNISCHES MESSEN
(2021)
Article
Optics
Adam J. Fleisher, Zeeshan Ahmed, Tobias Herman, Matthew R. Hartings
Summary: We have achieved precise photonic thermometry using dual-comb spectroscopy and a phase-shifted fiber Bragg grating. Our measurements demonstrate a readout stability of 7.5 mK at 1 second and the ability to detect temperature changes of similar magnitude, making it suitable for industrial applications. Our dual-comb approach allows for rapid sensing of dynamic temperatures, and our scalable electro-optic generation scheme enables broad sensing range without the need for laser tuning. Our demonstration paves the way for a universal interrogator that can be deployed to multiple photonic devices in parallel, potentially unlocking complex multi-physical quantity measurements.
Article
Chemistry, Inorganic & Nuclear
Mukesh K. Sahu, M. Jayasimhadri, D. Haranath
Summary: In this study, single phase crystalline Er3+ doped Ca3Bi(PO4)3 (CBP:Er3+) phosphors were prepared using chemical co-precipitation route. The structural, optical, morphological, and luminescent characteristics of the CBP:Er3+ phosphors were investigated, and their potential applications in optical thermometry and optoelectronic devices were explored.
SOLID STATE SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Md Mofasser Mallick, Leonard Franke, Andres Georg Roesch, Mohamed Hussein, Zhongmin Long, Yolita M. Eggeler, Uli Lemmer
Summary: Despite the lack of mechanical robustness and flexibility in high-performance thermoelectric materials-based thermocouples, conventional low Seebeck coefficient metals wire-junction-based thermocouples are still used for temperature sensor applications due to limitations. However, a study has successfully employed high-performance (SbBi)(2)(TeSe)(3)-based printed flexible thermoelectric materials to fabricate shape-conformable temperature sensor arrays with high linearity and sensitivities of approximately 124 mu V degrees C-1 and 319 mu V degrees C-1.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xingbang Dong, Huanjun Zhang, Yi Li, Zheng Wang, Yang Yang, Shiquan Feng, Yongqiang Wang, Chaosheng Yuan, Kun Yang, Xuerui Cheng
Summary: Er3+/Yb3+ co-doped InNbO4 phosphors were synthesized and characterized with monoclinic-wolframite structure. The upconversion emission from Er3+ ions was observed under 980 nm excitation, and was enhanced by co-doping Yb3+ ions. Optical temperature sensing property was investigated using fluorescence intensity ratio (FIR) method, showing promising application in optical thermometry.
SCIENCE OF ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Fangzhou Zhang, Fangxu Wang, Ning Gu
Summary: Energy transformation, described as temperature variations, is present in all cellular metabolism activities. Detecting the temperature of cells is useful for studying cellular physiological function and investigating pathology. Current cell thermometric technologies have limitations, and the development of a high-precision platinum temperature sensor is important.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Naim Ben Ali, Haitham Alsaif, Youssef Trabelsi, Muhammad Tajammal Chughtai, Vigneswaran Dhasarathan, Mounir Kanzari
Summary: This paper theoretically studies the concept of a photonic salinity and temperature sensor using a deformed one-dimensional photonic structure. The structure is optimized to achieve maximum sensitivity, with the best salinity sensitivity of 558.82 nm/RFIU and temperature sensitivity of 600 nm/RFIU.
Article
Optics
Chunyang Han, Chenyu Zhao, Hui Ding, Chen Chen
Summary: This article presents a temperature-insensitive vibration sensor that utilizes optical fiber to detect mechanical movement induced by vibration. The sensor converts the vibration into changes in output optical power, allowing for accurate measurement. It has a linear response, high signal-to-noise ratio, and is nearly unaffected by ambient temperature.
Review
Chemistry, Analytical
Nana Yang, Jingjing Xu, Fan Wang, Fan Yang, Danhong Han, Shengyong Xu
Summary: Temperature plays a significant role in cellular metabolism and biochemical activities. This study provides an overview of two important technologies, fluorescence nano-thermometry and micro-/nano-sized thin-film thermocouples, used to monitor the local temperatures of individual living cells. The study also suggests a method for combining these technologies into a hybrid measuring system.
Article
Optics
Chen Zhu, Muhammad Roman, Yiyang Zhuang, Jie Huang
Summary: This Letter demonstrates a distributed optical fiber sensor based on microwave photonics with improved sensitivity enabled by the Vernier effect. Distributed sensing is achieved by interrogating a Fabry-Perot interferometer (FPI) array formed by cascaded reflectors along an optical fiber using an optical carrier-based microwave interferometry (OCMI) system. By tracking the spectral shift of the envelope signals, the measurement sensitivities of the sensing FPIs can be significantly improved.
Article
Engineering, Electrical & Electronic
Bo Hu, Huawei Zhang, Liren He, Dongli Wang
Summary: In this study, Er3+/Yb3+-doped orthorhombic-phase BiNbO4 phosphors were synthesized and investigated as optical temperature sensors. The optimal doping concentrations were determined to be 3 mol.% Er3+ and 15 mol.% Yb3+. The material showed maximum absolute sensitivity (S-a) of 5.51‰/K at 415 K and relative sensitivity (S-r) of 3.7%/K at 150 K using the fluorescence intensity ratio technique.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Makfir Sefa, Zeeshan Ahmed, James A. Fedchak, Julia Scherschligt, Nikolai Klimov
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2016)
Article
Instruments & Instrumentation
Michael de Podesta, Darren F. Mark, Ross C. Dymock, Robin Underwood, Thomas Bacquart, Gavin Sutton, Stuart Davidson, Graham Machin
Article
Biophysics
G. Machin, A. Whittam, S. Ainarkar, J. Allen, J. Bevans, M. Edmonds, B. Kluwe, A. Macdonald, N. Petrova, P. Plassmann, F. Ring, L. Rogers, R. Simpson
PHYSIOLOGICAL MEASUREMENT
(2017)
Review
Engineering, Multidisciplinary
Graham Machin
MEASUREMENT SCIENCE AND TECHNOLOGY
(2018)
Article
Chemistry, Analytical
Matthew Hartings, Kevin O. Douglass, Claire Neice, Zeeshan Ahmed
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Engineering, Multidisciplinary
Declan Tucker, Aurik Andreu, Claire Elliott, Trevor Ford, Marius Neagu, Graham Machin, Jonathan Pearce
MEASUREMENT SCIENCE AND TECHNOLOGY
(2018)
Article
Engineering, Multidisciplinary
G. Sutton, A. Greenen, B. Roebuck, G. Machin
MEASUREMENT SCIENCE AND TECHNOLOGY
(2019)
Review
Biophysics
G. Machin, R. Simpson, H. C. McEvoy, A. Whittam
PHYSIOLOGICAL MEASUREMENT
(2019)
Article
Chemistry, Analytical
Matthew R. Hartings, Nathan J. Castro, Kathryn Gill, Zeeshan Ahmed
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Engineering, Multidisciplinary
D. Lowe, G. Sutton, A. Sposito, G. Machin, J. Pearce
Summary: Measurement traceability is crucial for minimizing uncertainty in metrology, even if a sensor in harsh environments with a larger uncertainty can provide a traceable link. A phosphor-based thermometer offers an optical alternative, calibrated to the International Temperature Scale of 1990, with standard uncertainty ranging from 0.5°C to 2°C, allowing for use in situations where electrical connections are not feasible.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
A. D. W. Todd, K. Anhalt, P. Bloembergen, B. B. Khlevnoy, D. H. Lowe, G. Machin, M. Sadli, N. Sasajima, P. Saunders
Summary: This study discussed two approaches to realizing temperature measurements using high temperature fixed-point blackbody cells, outlining the uncertainty components that need to be considered for each path and typical achievable values, focusing on Co-C, Pt-C, and Re-C.
Article
Engineering, Multidisciplinary
J. McMillan, M. Hayes, R. Hornby, S. Korniliou, C. Jones, D. O'Connor, R. Simpson, G. Machin, R. Bernard, C. Gallagher
Summary: In this laboratory-based study, a plate was designed, manufactured and characterized thermally and dimensionally using a thermal imager. The surface temperature determination of this plate was verified through thermal models and successful defect identification. The feasibility of deploying in-situ thermal imaging to the thermal and dimensional characterization of special nuclear material containers was demonstrated. Lack of suitable emissivity data and a robust defect identification algorithm are the main challenges inhibiting successful deployment.
Article
Engineering, Multidisciplinary
H. C. McEvoy, D. H. Lowe, R. Underwood, M. de Podesta, G. Machin, M. J. Martin, J. M. Mantilla, J. Campos, M. Sadli, F. Bourson, S. Briaudeau, S. G. R. Salim, K. Anhalt, M. Waehmer, D. R. Taubert, X. J. Feng, J. T. Zhang, X. F. Lu, H. Yoon
Summary: This paper discusses new developments in instrumentation and techniques for acoustic and radiometric primary thermometry methods. The work is ongoing, with the goal of ultimately providing consensus values of T-T-90 with associated estimated uncertainties.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2021)
