Investigation of a high-sensitivity near-infrared-ray computed tomography scanner

2017 ◽  
Author(s):  
Eiichi Sato ◽  
Yasuyuki Oda ◽  
Yuichi Sato ◽  
Sohei Yoshida ◽  
Tomotaka Ishii ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Near Infrared ◽  
High Sensitivity ◽  
Near Infrared Ray ◽  
Computed Tomography Scanner

850-nm-peak high-sensitivity near-infrared-ray computed tomography scanner in the living-body window

2018 ◽  
Vol 8 (3) ◽  
pp. 205-210 ◽  
Author(s):  
Yuichi Sato ◽  
Akiko Takaoka ◽  
Tsukuru Sato ◽  
Eiichi Sato ◽  
Yasuyuki Oda ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Near Infrared ◽  
High Sensitivity ◽  
Living Body ◽  
Near Infrared Ray ◽  
Computed Tomography Scanner

Investigation of a near-infrared-ray computed tomography scanner

2016 ◽  
Author(s):  
Eiichi Sato ◽  
Yasuyuki Oda ◽  
Yuichi Satoi ◽  
Satoshi Yamaguchi ◽  
Tomotaka Ishii ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Near Infrared ◽  
Near Infrared Ray ◽  
Computed Tomography Scanner

Near-infrared-ray computed tomography with an 808 nm laser beam and high spatial resolutions

2021 ◽  
Vol 92 (1) ◽  
pp. 013702
Author(s):  
Eiichi Sato ◽  
Yasuyuki Oda ◽  
Sohei Yoshida ◽  
Kunihiro Yoshioka ◽  
Hodaka Moriyama ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Laser Beam ◽  
Near Infrared ◽  
Near Infrared Ray

850-nm near-infrared-ray computed tomography with high spatial resolutions

2019 ◽  
Author(s):  
Eiichi Sato ◽  
Yasuyuki Oda ◽  
Yuichi Sato ◽  
Sohei Yoshida ◽  
Hodaka M. Oriyama ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Near Infrared ◽  
Near Infrared Ray

scholarly journals Near-infrared-ray computed tomography with 850-nm peak and high spatial resolutions in first living-body window

Physics Open ◽  
2020 ◽  
Vol 2 ◽  
pp. 100010 ◽  
Author(s):  
Eiichi Sato ◽  
Akiko Yoshida ◽  
Toshihiro Someya ◽  
Yasuyuki Oda ◽  
Sohei Yoshida ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Near Infrared ◽  
Living Body ◽  
Near Infrared Ray

scholarly journals Author Correction: High-sensitivity imaging of time-domain near-infrared light transducer

2021 ◽  
Author(s):  
Yuyang Gu ◽  
Zhiyong Guo ◽  
Wei Yuan ◽  
Mengya Kong ◽  
Yulai Liu ◽  
...  
Keyword(s):  
Time Domain ◽  
Near Infrared ◽  
High Sensitivity ◽  
Infrared Light ◽  
Near Infrared Light

scholarly journals High Sensitivity Continuous Monitoring of Chloroform Gas by Using Wavelength Modulation Photoacoustic Spectroscopy in the Near-Infrared Range

2021 ◽  
Vol 11 (15) ◽  
pp. 6992
Author(s):  
Tie Zhang ◽  
Yuxin Xing ◽  
Gaoxuan Wang ◽  
Sailing He
Keyword(s):  
Photoacoustic Spectroscopy ◽  
Continuous Monitoring ◽  
Near Infrared ◽  
Resonant Cavity ◽  
High Sensitivity ◽  
Industrial Applications ◽  
Detection Sensitivity ◽  
Infrared Range ◽  
Wavelength Modulation ◽  
Linear Coefficient

An optical system for gaseous chloroform (CHCl3) detection based on wavelength modulation photoacoustic spectroscopy (WMPAS) is proposed for the first time by using a distributed feedback (DFB) laser with a center wavelength of 1683 nm where chloroform has strong and complex absorption peaks. The WMPAS sensor developed possesses the advantages of having a simple structure, high-sensitivity, and direct measurement. A resonant cavity made of stainless steel with a resonant frequency of 6390 Hz was utilized, and eight microphones were located at the middle of the resonator at uniform intervals to collect the sound signal. All of the devices were integrated into an instrument box for practical applications. The performance of the WMPAS sensor was experimentally demonstrated with the measurement of different concentrations of chloroform from 63 to 625 ppm. A linear coefficient R2 of 0.999 and a detection sensitivity of 0.28 ppm with a time period of 20 s were achieved at room temperature (around 20 °C) and atmosphere pressure. Long-time continuous monitoring for a fixed concentration of chloroform gas was carried out to demonstrate the excellent stability of the system. The performance of the system shows great practical value for the detection of chloroform gas in industrial applications.

A phthalocyanine-based fluorescent sensor for Zn2+ ion

2013 ◽  
Vol 17 (01n02) ◽  
pp. 99-103 ◽  
Author(s):  
Hui He ◽  
Jian-Yong Liu ◽  
Dennis K.P. Ng
Keyword(s):  
Metal Ions ◽  
Spectral Properties ◽  
Fluorescence Spectra ◽  
Near Infrared ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Absorption And Fluorescence Spectra

This paper describes the preparation and spectral properties of a near-infrared fluorophore in which two bis(2-picolyl)amino moieties are axially linked to a silicon(IV) phthalocyanine core. The effects of various metal ions on its absorption and fluorescence spectra have been examined. The results indicate that this compound shows a high sensitivity and moderate selectivity toward Zn2+ ion.

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