Transition from a complex to a simple two dimensional liquid: Isotherm and Brewster angle microscopy studies

2012 ◽  
Author(s):  
Madhumita Choudhuri ◽  
Alokmay Datta
Keyword(s):  
Brewster Angle ◽  
Two Dimensional ◽  
Brewster Angle Microscopy

Cooperative photoinduced two-dimensional condensation in Langmuir films observed using nanosecond pump-probe Brewster angle microscopy

2010 ◽  
Vol 5 (3) ◽  
pp. FA105-FA109 ◽  
Author(s):  
Jonathan Hobley ◽  
Sergey Gorelik ◽  
Tomoya Oori ◽  
Shinji Kajimoto ◽  
Hiroshi Fukumura ◽  
...  
Keyword(s):  
Brewster Angle ◽  
Langmuir Films ◽  
Two Dimensional ◽  
Brewster Angle Microscopy ◽  
Pump Probe

The influence of molecular structure and π-system extent on nano- and microstructure of Langmuir layers of copper azaporphyrins

2011 ◽  
Vol 15 (09n10) ◽  
pp. 1044-1051 ◽  
Author(s):  
Larissa A. Valkova ◽  
Victor V. Erokhin ◽  
Alexandr S. Glibin ◽  
Oscar I. Koifman
Keyword(s):  
Molecular Structure ◽  
Comparative Analysis ◽  
Intermolecular Interactions ◽  
Structural Difference ◽  
Brewster Angle ◽  
Two Dimensional ◽  
Brewster Angle Microscopy ◽  
Aromatic Solvents ◽  
Micro Level ◽  
Open Face

Comparative analysis of the structure of floating layers formed by copper tetra-tert-butylsubstituted phthalocyanine ( CuPctBu4 ) and tetrabenzotriazaporphyrin ( CuThptBu4 ) dissolved in a number of solvents is performed. The influence of the π-system extent (tetra-tert-butylsubstituted copper porphyrazine and phthalocyanine: CuPaztBu4 and CuPctBu4 ) on the structure of Langmuir layers of copper azaporphyrins is studied. It is shown that both the lack of one meso-atom and the increase of the extent of the π-system cause the balance between intermolecular interactions (AP–AP) — (AP-water) to shift to the latter and lead to formation of stable monolayers with the most open face-on structure of nanoaggregates instead of the edge-on one, all other factors being equal, in Langmuir layers prepared from solutions in aromatic solvents. The micro-level structural difference of copper tetra-tert-butylsubstituted porphyrazine ( CuPaztBu4 ) and phthalocyanine ( CuPctBu4 ) resulted from the structural difference of two-dimensional nanoaggregates forming the layers was shown using Brewster angle microscopy.

Two-Dimensional Crystallization of Streptavidin Studied by Quantitative Brewster Angle Microscopy

Langmuir ◽  
1996 ◽  
Vol 12 (5) ◽  
pp. 1312-1320 ◽  
Author(s):  
Wolfgang Frey ◽  
William R. Schief ◽  
Viola Vogel
Keyword(s):  
Brewster Angle ◽  
Two Dimensional ◽  
Brewster Angle Microscopy

Visualizing a multidrug resistance protein, EmrE, with major bacterial lipids using Brewster angle microscopy

2013 ◽  
Vol 167-168 ◽  
pp. 33-42 ◽  
Author(s):  
Safia Nathoo ◽  
Jennifer K. Litzenberger ◽  
Denice C. Bay ◽  
Raymond J. Turner ◽  
Elmar J. Prenner
Keyword(s):  
Multidrug Resistance ◽  
Brewster Angle ◽  
Multidrug Resistance Protein ◽  
Brewster Angle Microscopy ◽  
Resistance Protein

Morphology of a Cytochrome c-Adsorbed Stearic Acid Monolayer on Brewster Angle Microscopy

1995 ◽  
Vol 117 (6) ◽  
pp. 1151-1155 ◽  
Author(s):  
Hideaki Tanaka ◽  
Ken-ichi Hayashi ◽  
Takahisa Akatsuka ◽  
Jiro Toyama ◽  
Kazuyuki Noda ◽  
...  
Keyword(s):  
Cytochrome C ◽  
Stearic Acid ◽  
Brewster Angle ◽  
Brewster Angle Microscopy

Optical properties of two-dimensional materials with tilted anisotropic Dirac cones: theoretical modelling with application to doped 8-Pmmn borophene

2021 ◽  
Author(s):  
Vl A Margulis ◽  
E E Muryumin
Keyword(s):  
Electronic Band Structure ◽  
Grazing Incidence ◽  
Dielectric Substrate ◽  
Incident Radiation ◽  
Brewster Angle ◽  
Theoretical Modelling ◽  
Two Dimensional ◽  
Electronic Band ◽  
A Value ◽  
Transmission And Absorption

Abstract The optical reflection, transmission and absorption properties of borophene, a newly discovered two-dimensional material with tilted anisotropic Dirac cones, are explored within a simple electronic band structure model of 8-Pmmn borophene, proposed by Zabolotskiy and Lozovik (2016 Phys. Rev. B 94 165403). It is assumed that the borophene layer is deposited on a dielectric substrate, such as Al2O3, and that the borophene's electron density is controlled by an external gate voltage. The reflectance, transmittance and absorbance of the borophene layer, the conduction band of which is filled with electrons up to the Fermi level, are calculated against the frequency of the incident radiation, as well as on the angle of its incidence on the layer. Considered are the two principal cases of the incident radiation polarization either parallel to or normal to the plane of incidence. We reveal that the optical characteristics of 8-Pmmn borophene are distinctly different for the above two cases at all angles of radiation incidence, excepting the grazing incidence, for which the borophene layer is found to behave like a mirror regardless of the wave polarization. The results obtained indicate the possibility of visualizing the borophene layer deposited on a dielectric substrate by observing the minimum reflectivity of this layer at a certain angle incidence (called the quasi-Brewster angle) of the p-polarized radiation, which may differ by a value of about ten degrees from the Brewster angle of the substrate.

Sign in / Sign up

Export Citation Format

Share Document