Institution
National Physical Laboratory
Facility•London, United Kingdom•
About: National Physical Laboratory is a facility organization based out in London, United Kingdom. It is known for research contribution in the topics: Dielectric & Thin film. The organization has 7615 authors who have published 13327 publications receiving 319381 citations.
Papers published on a yearly basis
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TL;DR: In this paper, the authors carried out scratch tests on a range of ceramics and hard metals and found that fracture was a predominant form of damage to both hard and soft materials, but with the harder materials fracture occurred on a larger scale, often removing large fragments of material.
88 citations
TL;DR: In this paper, a Monte Carlo modelling (MCM) technique is used to provide estimates of uncertainty which are compared to those of measurements on reference liquids made with 3.5 mm, 7 mm and 15.1 mm diameter sensors.
Abstract: Coaxial sensors are used in applications that require accurate and traceable measurements of complex permittivity. For example, coaxial sensors are often used for measurement of the complex permittivity of tissue equivalent materials (TEMs) used in specific absorption rate (SAR) measurements of exposure to RF fields. It is therefore important that well-founded metrological techniques for their use are developed and published. Although there are many published papers on coaxial sensors, few discuss the experimental techniques required to obtain the most accurate results. In this paper experimental approaches for obtaining the most accurate measurements are described. Common pitfalls with the technique are discussed. A Monte Carlo modelling (MCM) technique is used to provide estimates of uncertainty which are compared to those of measurements on reference liquids made with 3.5 mm, 7 mm and 15.1 mm diameter sensors. The MCM technique allows uncertainties to be estimated when measuring dielectrics for which there are no reference materials that have comparable properties, for example for TEMs at frequencies below 100 MHz.
88 citations
TL;DR: In this paper, a dispersive medium is introduced into one arm of a Michelson interferometer irradiated by a wide band of radiation, and the two-beam interferogram contains detailed information about the variation of the complex refractive index of the medium with wave-number.
88 citations
TL;DR: In this article, the second-harmonic generation (SHG) efficiency has been observed in the glycine picrate (GP) though it crystallizes in centrosymmetric structure.
88 citations
TL;DR: In this article, values of all the fundamental frequencies are proposed for the fifteen substituted phenols, o -, m - or p -X C 6 H 4 OH (X = CH 3, F, Cl, Br or I), in the monomeric state utilizing i.r. (3650-50 cm −1 ) and Raman spectra.
88 citations
Authors
Showing all 7655 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Rajesh Kumar | 149 | 4439 | 140830 |
| Akhilesh Pandey | 100 | 529 | 53741 |
| A. S. Bell | 90 | 305 | 61177 |
| David R. Clarke | 90 | 553 | 36039 |
| Praveen Kumar | 88 | 1339 | 35718 |
| Richard C. Thompson | 87 | 380 | 45702 |
| Xin-She Yang | 85 | 444 | 61136 |
| Andrew J. Pollard | 79 | 673 | 26295 |
| Krishnendu Chakrabarty | 79 | 996 | 27583 |
| Vinod Kumar | 77 | 815 | 26882 |
| Bansi D. Malhotra | 75 | 375 | 19419 |
| Matthew Hall | 75 | 827 | 24352 |
| Sanjay K. Srivastava | 73 | 366 | 15587 |
| Michael Jones | 72 | 331 | 18889 |
| Sanjay Singh | 71 | 1133 | 22099 |