Application of IR Spectroscopy, IR Microscopy, and Optical Interference Microscopy to Diffusion in Zeolites

2008 ◽  
pp. 135-206 ◽  
Author(s):  
Hellmut G. Karge ◽  
Jörg Kärger
Keyword(s):  
Ir Spectroscopy ◽  
Interference Microscopy ◽  
Optical Interference ◽  
Ir Microscopy

3-D Optical Interference Microscopy at the Lateral Resolution

2014 ◽  
Vol 8 (4) ◽  
pp. 231-241 ◽  
Author(s):  
Peter Lehmann ◽  
Jan Niehues ◽  
Stanislav Tereschenko
Keyword(s):  
Interference Microscopy ◽  
Lateral Resolution ◽  
Optical Interference

Spectroscopic Characterization of Normal Primary and Malignant Cells Transformed by Retroviruses

2002 ◽  
Vol 56 (5) ◽  
pp. 640-645 ◽  
Author(s):  
Mahmoud Huleihel ◽  
Vitaly Erukhimovitch ◽  
Marina Talyshinsky ◽  
Mark Karpasas
Keyword(s):  
Ir Spectroscopy ◽  
Spectroscopic Characterization ◽  
Primary Cells ◽  
Malignant Cells ◽  
Ir Microscopy ◽  
Murine Sarcoma Virus ◽  
Sarcoma Virus ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Microscopic FT-IR spectroscopy was used to investigate spectral differences between various primary cells obtained from different sources (mouse, rat, rabbit, and human) and malignant cells transformed by murine sarcoma virus (MuSV). The advantage of this method over conventional FT-IR spectroscopy is that it facilitates inspection of restricted regions of tissue. Our results showed significant and consistent differences between all the tested normal and malignant cells. An impressive decrease in the levels of vital cellular metabolites was seen in malignant cells compared to normal cells. The peak attributed to the PO2− symmetric stretching mode at 1082 cm−1 was shifted significantly to a higher frequency (1086–1087 cm−1) in all the tested malignant cells. The impressive and consistent differences between normal primary cells and malignant cells (obtained from various organs and species) in the shapes and position of various bands throughout the spectrum strongly support the possibility of developing FT-IR microscopy as a diagnostic method for the detection and study of cancer cells.

Characterization of Solid Propellant and its Connection to Aging Phenomena

1992 ◽  
Vol 46 (7) ◽  
pp. 1143-1148 ◽  
Author(s):  
R. A. Pesce-Rodriguez ◽  
C. S. Miser ◽  
K. L. McNesby ◽  
R. A. Fifer ◽  
S. Kessel ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Solid Propellant ◽  
Accelerated Aging ◽  
Residual Solvent ◽  
Ir Microscopy ◽  
Aging Conditions ◽  
Ft Ir ◽  
Aging Phenomena ◽  
And Behavior ◽  
Ft Ir Spectroscopy

Solid propellant characterization has been performed with the use of three Fourier transform infrared (FT-IR) techniques: FT-IR-microscopy (FT-IR-mic), attenuated total reflectance/FT-IR (ATR/FT-IR) spectroscopy, and desorption/gas chromatography/FT-IR (D/GC/FT-IR) spectroscopy as well as thermogravimetric analysis (TGA). Emphasis was placed on examination of the content and behavior of plasticizer (bis-2,2-dinitropropyl acetal/formal, BDNPA/F) in propellant samples characterized over a 300-day period. Levels of residual solvent and other desorbable materials were examined as well. The following conclusions were made: there are significantly higher levels of both plasticizer and polymeric binder at extruded surfaces than in the interior of propellant grains; the rate of plasticizer migration in binder alone depends on the CAB:NC (cellulose acetate butyrate: nitrocellulose) ratio; and plasticizer evaporation and diffusional migration are negligible for all but one of the samples analyzed, suggesting that plasticizer is probably not responsible for observed aging phenomena. Levels of residual solvent and other minor components were observed to decrease with time under both ambient and accelerated aging conditions and may be related to aging phenomena.

IR spectroscopy and IR microscopy of human breast tumors, xenografted breast tumors, and breast tumor cell lines

1998 ◽  
Author(s):  
Heinz Fabian ◽  
Ralf Wessel ◽  
Michael Jackson ◽  
Arnfried Schwartz ◽  
Peter Lasch ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Tumor Cell ◽  
Cell Lines ◽  
Breast Tumor ◽  
Breast Tumors ◽  
Tumor Cell Lines ◽  
Human Breast ◽  
Breast Tumor Cell ◽  
Ir Microscopy

Static and dynamic characterization of AlN-driven microcantilevers using optical interference microscopy

2009 ◽  
Vol 47 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Katarzyna Krupa ◽  
Michał Józwik ◽  
Christophe Gorecki ◽  
Alexandru Andrei ◽  
Łukasz Nieradko ◽  
...  
Keyword(s):  
Interference Microscopy ◽  
Dynamic Characterization ◽  
Optical Interference

scholarly journals Application of microimaging to diffusion studies in nanoporous materials

Adsorption ◽  
2020 ◽  
Author(s):  
Christian Chmelik ◽  
Roger Gläser ◽  
Jürgen Haase ◽  
Seungtaik Hwang ◽  
Jörg Kärger
Keyword(s):  
Mass Transfer ◽  
Direct Determination ◽  
Multicomponent Diffusion ◽  
Tracer Diffusion ◽  
Interference Microscopy ◽  
Direct Access ◽  
Mixed Matrix Membranes ◽  
Equilibrium Conditions ◽  
Ir Microscopy ◽  
Non Equilibrium

AbstractMicroimaging on the basis of, respectively, interference microscopy and IR microscopy permit the observation of the distribution of guest molecules in nanoporous solids and their variation with time. Thus attainable knowledge of both concentration gradients and diffusion fluxes provides direct access to the underlying diffusion phenomena. This includes, in particular, the measurement of transport diffusion under transient, i. e. under non-equilibrium conditions, and of self- or tracer diffusion on considering the rate of tracer exchange. Correlating the difference in guest concentration close to the external surface to its equilibrium value with the influx into the nanoporous solid, microimaging does as well allow the direct determination of surface resistances. Examples illustrating the variety of information thus attainable include the comparison of mass transfer under equilibrium and non-equilibrium conditions, single- and multicomponent diffusion and chemical reactions. They, finally, introduce into the potentials of microimaging for an in-depth study of mass transfer in mixed-matrix membranes. This tutorial review may serve as first introduction into the topic. Further references are linked for the interested reader.

Transport-Optimized Nanoporous Materials for Mass Separation and Conversion as Designed by Microscopic Diffusion Measurement

2018 ◽  
Vol 19 ◽  
pp. 96-124
Author(s):  
Jörg Kärger ◽  
Rustem Valiullin
Keyword(s):  
Mass Transfer ◽  
Measurement Techniques ◽  
High Standard ◽  
Nanoporous Materials ◽  
Mass Separation ◽  
Interference Microscopy ◽  
Widespread Application ◽  
Ir Microscopy ◽  
Diffusive Fluxes ◽  
Microscopic Measurement

Nanoporous materials find widespread application in material upgrading by separation (“molecular sieving”) and catalytic conversion. Mass transfer in these materials is a key phenomenon deciding about their technological performance. This chapter deals with the application of measurement techniques which are able to follow the diffusive fluxes of the guest molecules in such materials over “microscopic” distances, including the pulsed field gradient (PFG) technique of Nuclear Magnetic Resonance (NMR) and the techniques of microimaging by interference microscopy (IFM) and by IR microscopy (IRM). Microscopic measurement is a prerequisite for attaining unbiased information about the elementary steps of mass transfer and about their role within the overall process of technological exploitation. We dedicate this treatise to the memory of our dear and highly esteemed colleague Nicolaas Augustinus Stolwijk, notably in recognition of his manifold activities in the field of diffusion, distinguished by their impressively high standard in connecting the message of various techniques of measurement and in combining them to comprehensive views on quite intricate subjects.

Application of the aperture synthesis technique in optical interference microscopy

2009 ◽  
Vol 107 (2) ◽  
pp. 319-326 ◽  
Author(s):  
G. G. Levin ◽  
A. G. Lomakin ◽  
Ya. A. Ilyushin ◽  
V. E. Kunitsyn
Keyword(s):  
Aperture Synthesis ◽  
Interference Microscopy ◽  
Optical Interference ◽  
Synthesis Technique

scholarly journals Coherence scanning and phase imaging optical interference microscopy at the lateral resolution limit

2018 ◽  
Vol 26 (6) ◽  
pp. 7376 ◽  
Author(s):  
Peter Lehmann ◽  
Weichang Xie ◽  
Benedikt Allendorf ◽  
Stanislav Tereschenko
Keyword(s):  
Interference Microscopy ◽  
Lateral Resolution ◽  
Phase Imaging ◽  
Resolution Limit ◽  
Optical Interference
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