Optical properties and London dispersion interaction of amorphous and crystallineSiO2determined by vacuum ultraviolet spectroscopy and spectroscopic ellipsometry

2005 ◽  
Vol 72 (20) ◽  
Author(s):  
G. L. Tan ◽  
M. F. Lemon ◽  
D. J. Jones ◽  
R. H. French
Keyword(s):  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Vacuum Ultraviolet ◽  
Dispersion Interaction ◽  
Ultraviolet Spectroscopy ◽  
Vacuum Ultraviolet Spectroscopy ◽  
London Dispersion

scholarly journals Optical properties of AlN determined by vacuum ultraviolet spectroscopy and spectroscopic ellipsometry data

1999 ◽  
Vol 14 (11) ◽  
pp. 4337-4344 ◽  
Author(s):  
D. J. Jones ◽  
R. H. French ◽  
H. Müllejans ◽  
S. Loughin ◽  
A. D. Dorneich ◽  
...  
Keyword(s):  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Optical Constants ◽  
Vacuum Ultraviolet ◽  
Accurate Knowledge ◽  
Vacuum Ultraviolet Spectroscopy ◽  
Data Extrapolation ◽  
Compact Disks ◽  
Ellipsometry Data ◽  
Interatomic Bonding

Precise and accurate knowledge of the optical properties of aluminum nitride (AlN) in the ultraviolet (UV) and visible (VIS) regions is important because of the increasing application of AlN in optical and electro-optical devices, including compact disks, phase shift lithography masks, and AlN/GaN multilayer devices. The interband optical properties in the vacuum ultraviolet (VUV) region of 6–44 eV have been investigated previously because they convey detailed information on the electronic structure and interatomic bonding of the material. In this work, we have combined spectroscopic ellipsometry with UV/VIS and VUV spectroscopy to directly determine the optical constants of AlN in this range, thereby reducing the uncertainty in the preparation of the low-energy data extrapolation essential for Kramers–Kronig analysis of VUV reflectance. We report the complex optical properties of AlN, over the range of 1.5–42 eV, showing improved agreement with theory when contrasted with earlier results.

scholarly journals Vacuum ultraviolet spectroscopy of the optical properties and electronic structure of seven poly(di-alkylsilanes)

1992 ◽  
Vol 50 (1-3) ◽  
pp. 499-508 ◽  
Author(s):  
R.H. French ◽  
J.S. Meth ◽  
J.R.G. Thorne ◽  
R.M. Hochstrasser ◽  
R.D. Miller
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Spectroscopy ◽  
Vacuum Ultraviolet Spectroscopy

Structures of Pyridine–Water Clusters Studied with Infrared–Vacuum Ultraviolet Spectroscopy

2021 ◽  
Vol 125 (34) ◽  
pp. 7489-7501
Author(s):  
Jun-Ying Feng ◽  
Yuan-Pern Lee ◽  
Henryk A. Witek ◽  
Po-Jen Hsu ◽  
Jer-Lai Kuo ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Water Clusters ◽  
Ultraviolet Spectroscopy ◽  
Vacuum Ultraviolet Spectroscopy

Techniques of Vacuum Ultraviolet Spectroscopy

Physics Today ◽  
1968 ◽  
Vol 21 (12) ◽  
pp. 79-81 ◽  
Author(s):  
James A. R. Samson ◽  
Stanley S. Ballard
Keyword(s):  
Vacuum Ultraviolet ◽  
Ultraviolet Spectroscopy ◽  
Vacuum Ultraviolet Spectroscopy

scholarly journals Optical Properties and van der Waals-London Dispersion Interactions in Inorganic and Biomolecular Assemblies

2014 ◽  
Vol 1619 ◽  
Author(s):  
Daniel M. Dryden ◽  
Yingfang Ma ◽  
Jacob Schimelman ◽  
Diana Acosta ◽  
Lijia Liu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Density Functional ◽  
Type I Collagen ◽  
Strong Dependence ◽  
Van Der Waals ◽  
Fundamental Absorption Edge ◽  
Type I ◽  
Dispersion Interactions ◽  
London Dispersion

ABSTRACTThe optical properties and electronic structure of AlPO4, SiO2, Type I collagen, and DNA were examined to gain insight into the van der Waals-London dispersion behavior of these materials. Interband optical properties of AlPO4 and SiO2 were derived from vacuum ultraviolet spectroscopy and spectroscopic ellipsometry, and showed a strong dependence on the crystals’ constituent tetrahedral units, with strong implications for the role of phosphate groups in biological materials. The UV-Vis decadic molar absorption of four DNA oligonucleotides was measured, and showed a strong dependence on composition and stacking sequence. A film of Type I collagen was studied using spectroscopic ellipsometry, and showed a characteristic shoulder in the fundamental absorption edge at 6.05 eV. Ab initio calculations based on density functional theory corroborated the experimental results and provided further insights into the electronic structures, interband transitions and vdW-Ld interaction potentials for these materials.

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