Photoelectron angular distribution of 2H-NbSe2 studied by a display-type spherical mirror analyzer and circularly polarized light

Three-dimensional atomic arrangements of ultra thin Fe silicide films were directly revealed. By using circularly polarized light with opposite helicities, forward focusing peaks with their positions shifted in photoelectron angular distribution (PEAD) patterns can be obtained. We successfully observed the PEAD patterns of ultra thin Fe silicide films from different core levels of Fe and Si atoms by display-type spherical mirror analyzer (DIANA). The element selective stereo photographs indicate similar hexagonal atomic arrangement with three-fold symmetry for Si and Fe atoms, which is consistent with a model based on a CsCl -type structure with B-type stacking. This is the first observation of stereoscopic atomic arrangements for ultra thin compound films, which implies that the stereo atomscope is very powerful structure analysis tool also for complex structures on surface.

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Differential polarization imaging of sickled cells

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100102390 ◽

1988 ◽

Vol 46 ◽

pp. 62-63

Author(s):

Marcos F. Maestre

Keyword(s):

Optical Properties ◽

Theoretical Approach ◽

Polarized Light ◽

Polarization Microscopy ◽

Spectroscopic Techniques ◽

Polarization Imaging ◽

Circularly Polarized Light ◽

Circularly Polarized ◽

Microscopic Scale ◽

Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

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Faculty Opinions recommendation of Non-racemic amino acid production by ultraviolet irradiation of achiral interstellar ice analogs with circularly polarized light.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.8329957.8916055 ◽

2011 ◽

Author(s):

Niles Lehman ◽

Aaron Burton

Keyword(s):

Amino Acid ◽

Ultraviolet Irradiation ◽

Acid Production ◽

Polarized Light ◽

Amino Acid Production ◽

Circularly Polarized Light ◽

Circularly Polarized ◽

Interstellar Ice ◽

Racemic Amino Acid

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Blue Circularly Polarized Luminescent Amorphous Molecules with Single-handed Propeller Chirality Induced by Circularly Polarized Light Irradiation

Chemical Communications ◽

10.1039/d0cc07898k ◽

2021 ◽

Author(s):

Zhaoming Zhang ◽

Takunori Harada ◽

Adriana Pietropaolo ◽

Yuting Wang ◽

Yue Wang ◽

...

Keyword(s):

Polarized Light ◽

Light Irradiation ◽

Circularly Polarized Light ◽

Circularly Polarized ◽

Trigonal Symmetry ◽

Circularly Polarized Luminescence ◽

Polarized Luminescence

Preferred-handed propeller conformation was induced by circularly polarized light irradiation to three amorphous molecules with trigonal symmetry, and the molecules with induced chirality efficiently exhibited blue circularly polarized luminescence. In...

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