scholarly journals Spatially resolved studies of the phases and morphology of methylammonium and formamidinium lead tri-halide perovskites

Nanoscale ◽  
2017 ◽  
Vol 9 (9) ◽  
pp. 3222-3230 ◽  
Author(s):  
K. Galkowski ◽  
A. A. Mitioglu ◽  
A. Surrente ◽  
Z. Yang ◽  
D. K. Maude ◽  
...  
Keyword(s):  
Spatially Resolved ◽  
Halide Perovskites ◽  
Spatially Resolved Studies

scholarly journals Spatially Resolved Studies of Local Massive Red Spiral Galaxies

2019 ◽  
Vol 883 (2) ◽  
pp. L36 ◽  
Author(s):  
Cai-Na Hao ◽  
Yong Shi ◽  
Yanmei Chen ◽  
Xiaoyang Xia ◽  
Qiusheng Gu ◽  
...  
Keyword(s):  
Spiral Galaxies ◽  
Spatially Resolved ◽  
Spatially Resolved Studies

Glass calorimeter for spatially resolved studies in arc lamps

1986 ◽  
Vol 57 (3) ◽  
pp. 478-482 ◽  
Author(s):  
J. B. Pearson ◽  
F. L. Curzon
Keyword(s):  
Spatially Resolved ◽  
Spatially Resolved Studies

Spatially Resolved Studies of DIBs in Galaxies outside the Local Group

2018 ◽  
Vol 14 (A30) ◽  
pp. 398-399
Author(s):  
Ana Monreal-Ibero ◽  
Peter M. Weilbacher ◽  
Martin Wendt
Keyword(s):  
Local Group ◽  
Spatially Resolved ◽  
Spatially Resolved Studies

Unraveling Deterministic Mesoscopic Polarization Switching Mechanisms: Spatially Resolved Studies of a Tilt Grain Boundary in Bismuth Ferrite

2009 ◽  
Vol 19 (13) ◽  
pp. 2053-2063 ◽  
Author(s):  
Brian J. Rodriguez ◽  
Samrat Choudhury ◽  
Y. H. Chu ◽  
Abhishek Bhattacharyya ◽  
Stephen Jesse ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Bismuth Ferrite ◽  
Polarization Switching ◽  
Spatially Resolved ◽  
Tilt Grain Boundary ◽  
Spatially Resolved Studies

scholarly journals Infrared and 2-Dimensional Correlation Spectroscopy Study of the Effect of CH3NH3PbI3 and CH3NH3SnI3 Photovoltaic Perovskites on Eukaryotic Cells

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 336 ◽  
Author(s):  
Luca Quaroni ◽  
Iness Benmessaoud ◽  
Bertrand Vileno ◽  
Endre Horváth ◽  
László Forró
Keyword(s):  
Cellular Response ◽  
Biochemical Characterization ◽  
Cellular Membrane ◽  
Correlation Spectroscopy ◽  
Metal Exposure ◽  
Infrared Microspectroscopy ◽  
Spatially Resolved ◽  
Fourier Transform Infrared Microspectroscopy ◽  
Halide Perovskites ◽  
2D Correlation Spectroscopy

We studied the effect of the exposure of human A549 and SH-SY5Y cell lines to aqueous solutions of organic/inorganic halide perovskites CH3NH3PbI3 (MAPbI3) and CH3NH3SnI3 (MASnI3) at the molecular level by using Fourier transform infrared microspectroscopy. We monitored the infrared spectra of some cells over a few days following exposure to the metals and observed the spectroscopic changes dominated by the appearance of a strong band at 1627 cm−1. We used Infrared (IR) mapping to show that this change was associated with the cell itself or the cellular membrane. It is unclear whether the appearance of the 1627 cm−1 band and heavy metal exposure are related by a direct causal relationship. The spectroscopic response of exposure to MAPbI3 and MASnI3 was similar, indicating that it may arise from a general cellular response to stressful environmental conditions. We used 2D correlation spectroscopy (2DCOS) analysis to interpret spectroscopic changes. In a novel application of the method, we demonstrated the viability of 2DCOS for band assignment in spatially resolved spectra. We assigned the 1627 cm−1 band to the accumulation of an abundant amide or amine containing compound, while ruling out other hypotheses. We propose a few tentative assignments to specific biomolecules or classes of biomolecules, although additional biochemical characterization will be necessary to confirm such assignments.

scholarly journals Ultrafast and spatially resolved studies of charge carriers in atomically thin molybdenum disulfide

2012 ◽  
Vol 86 (4) ◽  
Author(s):  
Rui Wang ◽  
Brian A. Ruzicka ◽  
Nardeep Kumar ◽  
Matthew Z. Bellus ◽  
Hsin-Ying Chiu ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Charge Carriers ◽  
Spatially Resolved ◽  
Spatially Resolved Studies
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