Wavelength-tracked white light interferometry for highly sensitive strain and temperature measurements

1996 ◽  
Vol 32 (3) ◽  
pp. 247 ◽  
Author(s):  
V. Bhatia ◽  
M.B. Sen ◽  
K.A. Murphy ◽  
R.O. Claus
Keyword(s):  
White Light ◽  
Sensitive Strain ◽  
Temperature Measurements ◽  
White Light Interferometry ◽  
Highly Sensitive

Fringe order identification in optical fibre white-light interferometry using centroid algorithm method

1992 ◽  
Vol 28 (6) ◽  
pp. 553 ◽  
Author(s):  
S. Chen ◽  
A.W. Palmer ◽  
K.T.V. Grattan ◽  
B.T. Meggitt
Keyword(s):  
Optical Fibre ◽  
White Light ◽  
White Light Interferometry ◽  
Fringe Order ◽  
Centroid Algorithm

scholarly journals Development of Highly Sensitive Strain Sensor Using Area-Arrayed Graphene Nanoribbons

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1701
Author(s):  
Ken Suzuki ◽  
Ryohei Nakagawa ◽  
Qinqiang Zhang ◽  
Hideo Miura
Keyword(s):  
Graphene Nanoribbons ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Bending Test ◽  
Gauge Factor ◽  
Four Point Bending ◽  
Current Voltage ◽  
Highly Sensitive ◽  
Current Voltage Relationship

In this study, a basic design of area-arrayed graphene nanoribbon (GNR) strain sensors was proposed to realize the next generation of strain sensors. To fabricate the area-arrayed GNRs, a top-down approach was employed, in which GNRs were cut out from a large graphene sheet using an electron beam lithography technique. GNRs with widths of 400 nm, 300 nm, 200 nm, and 50 nm were fabricated, and their current-voltage characteristics were evaluated. The current values of GNRs with widths of 200 nm and above increased linearly with increasing applied voltage, indicating that these GNRs were metallic conductors and a good ohmic junction was formed between graphene and the electrode. There were two types of GNRs with a width of 50 nm, one with a linear current–voltage relationship and the other with a nonlinear one. We evaluated the strain sensitivity of the 50 nm GNR exhibiting metallic conduction by applying a four-point bending test, and found that the gauge factor of this GNR was about 50. Thus, GNRs with a width of about 50 nm can be used to realize a highly sensitive strain sensor.

scholarly journals Integrated, Speckle-Based Displacement Measurement for Lateral Scanning White Light Interferometry

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2486
Author(s):  
Gert Behrends ◽  
Dirk Stöbener ◽  
Andreas Fischer
Keyword(s):  
White Light ◽  
Lateral Displacement ◽  
Displacement Measurement ◽  
Accurate Information ◽  
White Light Interferometry ◽  
Fully Integrated ◽  
Speckle Correlation ◽  
Dsc Measurements ◽  
Scanning White Light Interferometry ◽  
The Impact

Lateral scanning white light interferometry (LSWLI) is a promising technique for high-resolution topography measurements on moving surfaces. To achieve resolutions typically associated with white light interferometry, accurate information on the lateral displacement of the measured surface is essential. Since the uncertainty requirement for a respective displacement measurement is currently not known, Monte Carlo simulations of LSWLI measurements are carried out at first to assess the impact of the displacement uncertainty on the topography measurement. The simulation shows that the uncertainty of the displacement measurement has a larger influence on the total height uncertainty than the uncertainty of the displacing motion itself. Secondly, a sufficiently precise displacement measurement by means of digital speckle correlation (DSC) is proposed that is fully integrated into the field of view of the interferometer. In contrast to externally applied displacement measurement systems, the integrated combination of DSC with LSWLI needs no synchronization and calibration, and it is applicable for translatory as well as rotatory scans. To demonstrate the findings, an LSWLI setup with integrated DSC measurements is realized and tested on a rotating cylindrical object with a surface made of a linear encoder strip.

Mechanism of highly sensitive strain response in antiferromagnetic chromium

2021 ◽  
Vol 129 (20) ◽  
pp. 203901
Author(s):  
Yohei Kota ◽  
Eiji Niwa ◽  
Masayuki Naoe
Keyword(s):  
Sensitive Strain ◽  
Strain Response ◽  
Highly Sensitive

Polarization insensitive fibre-optic white-light interferometry

1995 ◽  
Vol 114 (5-6) ◽  
pp. 386-392 ◽  
Author(s):  
L.A Ferreira ◽  
J.L Santos ◽  
F Farahi
Keyword(s):  
White Light ◽  
Fibre Optic ◽  
White Light Interferometry ◽  
Polarization Insensitive

Fiber-optic white-light interferometry: lead sensitivity considerations

1994 ◽  
Vol 19 (2) ◽  
pp. 138 ◽  
Author(s):  
R. R. Gauthier ◽  
N. Dahi ◽  
F. Farahi
Keyword(s):  
White Light ◽  
Fiber Optic ◽  
White Light Interferometry

A White-Light Interferometry for the Measurement of High-Finesse Fiber Optic EFPI Sensors

2014 ◽  
Vol 26 (21) ◽  
pp. 2138-2141 ◽  
Author(s):  
Zhen Wang ◽  
Yi Jiang ◽  
Wenhui Ding ◽  
Ran Gao
Keyword(s):  
White Light ◽  
Fiber Optic ◽  
White Light Interferometry ◽  
High Finesse

Improved synthesised source for white light interferometry

1994 ◽  
Vol 30 (17) ◽  
pp. 1440-1441 ◽  
Author(s):  
Y.J. Rao ◽  
D.A. Jackson
Keyword(s):  
White Light ◽  
White Light Interferometry

Fiber optic white-light interferometry for self-calibrated absolute-strain measurements

1996 ◽  
Author(s):  
Vikram Bhatia ◽  
Kent A. Murphy ◽  
Richard O. Claus ◽  
Tuan A. Tran ◽  
Jonathan A. Greene
Keyword(s):  
White Light ◽  
Fiber Optic ◽  
White Light Interferometry ◽  
Strain Measurements
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