High-pressure integrated synchrotron infrared spectroscopy system at the Shanghai Synchrotron Radiation Facility

2019 ◽  
Vol 90 (9) ◽  
pp. 093905 ◽  
Author(s):  
Alexander F. Goncharov ◽  
Lingping Kong ◽  
Ho-kwang Mao
Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 34
Author(s):  
Akun Liang ◽  
Robin Turnbull ◽  
Enrico Bandiello ◽  
Ibraheem Yousef ◽  
Catalin Popescu ◽  
...  

We report the first high-pressure spectroscopy study on Zn(IO3)2 using synchrotron far-infrared radiation. Spectroscopy was conducted up to pressures of 17 GPa at room temperature. Twenty-five phonons were identified below 600 cm−1 for the initial monoclinic low-pressure polymorph of Zn(IO3)2. The pressure response of the modes with wavenumbers above 150 cm−1 has been characterized, with modes exhibiting non-linear responses and frequency discontinuities that have been proposed to be related to the existence of phase transitions. Analysis of the high-pressure spectra acquired on compression indicates that Zn(IO3)2 undergoes subtle phase transitions around 3 and 8 GPa, followed by a more drastic transition around 13 GPa.


2019 ◽  
Vol 9 (11) ◽  
pp. 2366 ◽  
Author(s):  
Laura Di Sieno ◽  
Alberto Dalla Mora ◽  
Alessandro Torricelli ◽  
Lorenzo Spinelli ◽  
Rebecca Re ◽  
...  

In this paper, a time-domain fast gated near-infrared spectroscopy system is presented. The system is composed of a fiber-based laser providing two pulsed sources and two fast gated detectors. The system is characterized on phantoms and was tested in vivo, showing how the gating approach can improve the contrast and contrast-to-noise-ratio for detection of absorption perturbation inside a diffusive medium, regardless of source-detector separation.


1990 ◽  
Vol 68 (6) ◽  
pp. 2719-2722 ◽  
Author(s):  
A. Matsumuro ◽  
M. Kobayashi ◽  
T. Kikegawa ◽  
M. Senoo

Soft Matter ◽  
2012 ◽  
Vol 8 (47) ◽  
pp. 11863 ◽  
Author(s):  
Federica Piccirilli ◽  
Sara Mangialardo ◽  
Paolo Postorino ◽  
Leonetta Baldassarre ◽  
Stefano Lupi ◽  
...  

1998 ◽  
Vol 8 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Mami Sakashita ◽  
Hiroshi Yamawaki ◽  
Katsutoshi Aoki

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