Realization of Quantum Pascal Using Natural Fundamental Physical Constants

Thakur, Vikas N.; Yadav, Sanjay; Kumar, Ashok

doi:10.1007/s12647-020-00411-3

Cited by 12 publications

(2 citation statements)

References 32 publications

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“…Recently, NIST USA developed a quantum pressure standard in the 1 Pa to 180 kPa pressure range. The study depicts the realization of quantum Pascal with the help of changes in the resonance frequency of EM waves during the light-matter interaction [12].…”

Section: Discussionmentioning

confidence: 99%

Redefinition of SI Units and Its Implications

Schlamminger

Yang

Kumar

2020

MAPAN

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The presented paper discusses the summary of the special issue consisting of 13 peer-reviewed papers regarding Redefinition of SI Units and Its Implications. The papers discuss state-of-the-art reviews and progress made as of now and ongoing progress regarding the redefinition of SI units at different National Metrology Institutes (NMIs) and academic/ research institutes across the globe. Different methodologies adopted while investigating redefinition of SI units have been discussed and summarized by the researchers, which will serve as a pivotal point in guiding the researchers in upcoming time.

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Section: Discussionmentioning

confidence: 99%

Redefinition of SI Units and Its Implications

Schlamminger

Yang

Kumar

2020

MAPAN

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“…A possible means to remedy such shortcomings is to employ quantum-based instrumentation that does not rely on any moving parts, and instead assesses pressure by utilizing knowledge of some fundamental properties of the gas [ 6 ]. Such instrumentation has over the last few decades experienced a significant development [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. The interest in this type of techniques was further enhanced by the 2019 redefinition of the SI, in which the Boltzmann constant received an exact value [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a Transportable Fabry–Pérot Refractometer by a Ring-Type Comparison of Dead-Weight Pressure Balances at Four European National Metrology Institutes

Forssén,

Silander,

Zakrisson

et al. 2023

Sensors

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Fabry–Pérot-based refractometry has demonstrated the ability to assess gas pressure with high accuracy and has been prophesized to be able to realize the SI unit for pressure, the pascal, based on quantum calculations of the molar polarizabilities of gases. So far, the technology has mostly been limited to well-controlled laboratories. However, recently, an easy-to-use transportable refractometer has been constructed. Although its performance has previously been assessed under well-controlled laboratory conditions, to assess its ability to serve as an actually transportable system, a ring-type comparison addressing various well-characterized pressure balances in the 10–90 kPa range at several European national metrology institutes is presented in this work. It was found that the transportable refractometer is capable of being transported and swiftly set up to be operational with retained performance in a variety of environments. The system could also verify that the pressure balances used within the ring-type comparison agree with each other. These results constitute an important step toward broadening the application areas of FP-based refractometry technology and bringing it within reach of various types of stakeholders, not least within industry.

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