High-frequency surface impedance and penetration depth of YBa/sub 2/Cu/sub 3/O/sub 7/ films: coherent time-domain spectroscopy method

1995 ◽  
Vol 5 (2) ◽  
pp. 1970-1974 ◽  
Author(s):  
F. Gao ◽  
J.F. Whitaker ◽  
C. Uher ◽  
S.Y. Hou ◽  
J.M. Phillips
Keyword(s):  
Penetration Depth ◽  
Time Domain ◽  
Surface Impedance ◽  
High Frequency ◽  
Spectroscopy Method ◽  
Time Domain Spectroscopy

scholarly journals High-frequency dielectric relaxation of liquid crystals: THz time-domain spectroscopy of liquid crystal colloids

2006 ◽  
Vol 14 (23) ◽  
pp. 11433 ◽  
Author(s):  
Masahito Oh-e ◽  
Hiroshi Yokoyama ◽  
Mattijs Koeberg ◽  
Euan Hendry ◽  
Mischa Bonn
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Dielectric Relaxation ◽  
Time Domain ◽  
High Frequency ◽  
Time Domain Spectroscopy

scholarly journals Nondestructive Tomographic Imaging of Rust with Rapid THz Time-Domain Spectroscopy

2021 ◽  
Vol 11 (22) ◽  
pp. 10594
Author(s):  
Hwan Sik Kim ◽  
Seung Yeob Baik ◽  
Joong Wook Lee ◽  
Jangsun Kim ◽  
Yeong Hwan Ahn
Keyword(s):  
Time Domain ◽  
High Frequency ◽  
Steel Plate ◽  
Low Frequency ◽  
Frequency Component ◽  
Paint Layer ◽  
Time Domain Spectroscopy ◽  
Frequency Components ◽  
Chemical Solutions ◽  
Time Of Flight Imaging

In this study, we developed a rapid nondestructive tool for testing rust spread in a metal covered by a paint layer by using a THz time-domain spectroscopy system at a speed of 100 Hz/pixel. Time-of-flight imaging helps identify rust formation by exclusively obtaining the reflection from the steel below the paint surface. The use of frequency-selective imaging allows us to manipulate the contrast in rust imaging. Higher contrast is generally obtained when monitoring using the higher frequency component. In addition, we monitored the spread of rust in a steel plate under the influence of two different chemical solutions: NaCl and acid. We found that in the early stages, the decrease in THz reflection was governed by the high-frequency components due to the formation of lepidocrocite, whereas the low-frequency component develops as the proportion of hematite increases with time.

Time-domain spectroscopy. Method for investigation of YSZ

1988 ◽  
Vol 107 (1) ◽  
pp. 235-238 ◽  
Author(s):  
M. Hrobár ◽  
I. Travěnec
Keyword(s):  
Time Domain ◽  
Spectroscopy Method ◽  
Time Domain Spectroscopy

A precision dielectric time domain spectroscopy method in the GHz range

1987 ◽  
Vol 91 (25) ◽  
pp. 6329-6331 ◽  
Author(s):  
B. Gestblom ◽  
E. Noreland ◽  
J. Sjoeblom
Keyword(s):  
Time Domain ◽  
Spectroscopy Method ◽  
Time Domain Spectroscopy
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