Determination of a grown oxide layer thickness and optical constants of Zn and Cd metals

Shehata, Mohamed; Abdallah, A. W.; Ibrahim, S. S.; Nagib, N.N.

doi:10.1016/j.ijleo.2021.166552

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…Selected optical properties of the blocks, 𝑖.𝑒., the optical constants the refractive index (𝑛) and the extinction coefficient (𝑘) of both aluminum and steel blocks which were determined using the PHE-103 ellipsometer at an angle of incidence 70 • and in the wavelength range from 250 nm to 1000 nm [25,26] are shown in Fig. 4a and 4b.…”

Section: Optical Constants Of the Newly Designed Blocksmentioning

confidence: 99%

Evaluation of new designed reference blocks for calibration and NDT by optical and ultrasonic techniques

Barakat,

Abdelwahab,

Abdallah

2022

Metrology and Measurement Systems

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Reference blocks are required for ultrasonic calibration and non-destructive testing (NDT). There are already in existence sets of reference blocks constructed according to American Society for Testing and Materials standards, but as the industry evolves, we need more reference blocks with varied designs. In this study, two reference blocks of steel and aluminum are constructed. These blocks have several sets of flat bottom holes (FBH) with different diameters (0.5, 1, 1.5, 2 and 2.5 mm), angles (45 • and 90 • ) and placements. The novel constructed reference blocks are evaluated using the ultrasonic and a displacement measuring interferometer (DMI). They allow for detailed FBH characterization in terms of defining their location, diameter, depth and so on. The two techniques show consistency in the majority of the outcomes. The expanded uncertainty of readings is found to be ±1.4 μm, according to DMI data. The findings show that the newly constructed blocks could be ideal for evaluating a variety of calibration factors including transducer sensitivity, dead zone, defect size, and depth. Furthermore, they can be used in NDT in various industries such as petroleum pipe production, steel manufacturing and so on.

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Section: Optical Constants Of the Newly Designed Blocksmentioning

confidence: 99%

Evaluation of new designed reference blocks for calibration and NDT by optical and ultrasonic techniques

Barakat,

Abdelwahab,

Abdallah

2022

Metrology and Measurement Systems

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“…There are several known methods to calibrate and measure the phase shift, resulting from transmission and reflection from the surface of the polarization materials, such as ellipsometry, Senarmont compensator technique, interference microscope, interferometry, polarization interferometry, etc [1][2][3][4][5]. The ellipsometric methods are used to measure the change in the phase and amplitude which is produced from the reflected light from the surface under test [6,7].…”

Section: Introductionmentioning

confidence: 99%

A modified method for calibration of polarimetric components using polarizing interferometry

Abdallah¹,

Abdel‐Wahab²

2021

Meas. Sci. Technol.

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Polarization interferometer technique has been developed for calibration of phase retardation elements such as quarter/half wave plate with known tolerance in each one. In addition, this technique is used to measure unknown retardation elements to identify its phase retardation. A polarizing beam splitter is placed after Sagnac interferometer to split the produced fringes into p and s polarization interferograms to be analyzed. The phase retardation measurements depend on two states, the reference state which includes recording the reference p and s interferogram images without placing the sample then measuring state at which the p and s interferogram images are recorded after placing the sample inside Sagnac interferometer. Six images are recorded for each interferogram under a controlled environment to calculate the repeatability of measurements and for uncertainty estimation. The detected images are mathematically processed to determine the phase retardation of the polarimetric components. The results are found to be in a good consequent with the data measured by Senarmont compensator method.

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Developed Method to Evaluate Some Optical Parameters in Gauge Block Measurements Using Ellipsometry

Abdallah

Abdel‐Wahab

El-Bahrawy

2022

MAPAN

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Determination of a grown oxide layer thickness and optical constants of Zn and Cd metals

Cited by 5 publications

References 19 publications

Evaluation of new designed reference blocks for calibration and NDT by optical and ultrasonic techniques

Evaluation of new designed reference blocks for calibration and NDT by optical and ultrasonic techniques

A modified method for calibration of polarimetric components using polarizing interferometry

Developed Method to Evaluate Some Optical Parameters in Gauge Block Measurements Using Ellipsometry

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