scholarly journals Fundamental Role of Periodicity and Geometric Shape to Resonant Terahertz Transmission

10.5772/48243 ◽  
2012 ◽  
Author(s):  
Joong Wook ◽  
DaiSik Kim
Keyword(s):  
Geometric Shape ◽  
Terahertz Transmission

Aesthetic Judgment of Geometric Shape: The Role of Compactness

2011 ◽  
Author(s):  
Jay Friedenberg ◽  
Timothy Spooner ◽  
Elizabeth Rivera ◽  
Ashley Wasilewski ◽  
Nicole Mcbride
Keyword(s):  
Aesthetic Judgment ◽  
Geometric Shape

The Role of Non-resonant Effect in Terahertz Transmission through Subwavelength Holes

PIERS Online ◽  
2008 ◽  
Vol 4 (4) ◽  
pp. 481-484 ◽  
Author(s):  
Jiaguang Han ◽  
Xinchao Lu ◽  
Abul K. Azad ◽  
Mufei Gong ◽  
Weili Zhang
Keyword(s):  
Resonant Effect ◽  
Terahertz Transmission

Role of surface plasmon resonant modes in anomalous terahertz transmission through double-layer metal loop arrays

2014 ◽  
Vol 39 (5) ◽  
pp. 1270 ◽  
Author(s):  
Song Xia ◽  
Dongxiao Yang ◽  
Tao Li ◽  
Xiang Liu ◽  
Jian Wang
Keyword(s):  
Surface Plasmon ◽  
Double Layer ◽  
Resonant Modes ◽  
Terahertz Transmission ◽  
Surface Plasmon Resonant

The Role of Geometric Shape of Javanese Traditional Mosque in Forming the Characteristic of Room Acoustics

2018 ◽  
Vol 24 (12) ◽  
pp. 9209-9213
Author(s):  
Nur Rahmawati Syamsiyah ◽  
Atyanto Dharoko ◽  
Sentagi Sesotya Utami
Keyword(s):  
Geometric Shape ◽  
Room Acoustics

scholarly journals Role of Geometric Shape in Chiral Optics

Symmetry ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 158
Author(s):  
Philipp Gutsche ◽  
Xavier Garcia-Santiago ◽  
Philipp-Immanuel Schneider ◽  
Kevin M. McPeak ◽  
Manuel Nieto-Vesperinas ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Activity ◽  
Degrees Of Freedom ◽  
Optical Response ◽  
Point Of View ◽  
Geometric Shape ◽  
Constructive Method ◽  
High Interest ◽  
T Matrix

The distinction of chiral and mirror symmetric objects is straightforward from a geometrical point of view. Since the biological as well as the optical activity of molecules strongly depend on their handedness, chirality has recently attracted high interest in the field of nano-optics. Various aspects of associated phenomena including the influences of internal and external degrees of freedom on the optical response have been discussed. Here, we propose a constructive method to evaluate the possibility of observing any chiral response from an optical scatterer. Based on solely the T-matrix of one enantiomer, planes of minimal chiral response are located and compared to geometric mirror planes. This provides insights into the relation of geometric and optical properties and enables identifying the potential of chiral scatterers for nano-optical experiments.

scholarly journals On the Optical Stark Effect of Excitons in InGaAs Prolate Ellipsoidal Quantum Dots

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Le Thi Ngoc Bao ◽  
Duong Dinh Phuoc ◽  
Le Thi Dieu Hien ◽  
Dinh Nhu Thao
Keyword(s):  
Quantum Dots ◽  
Stark Effect ◽  
Geometric Shape ◽  
Quantum Structures ◽  
Field Energy ◽  
Exciton Absorption ◽  
Optical Stark Effect ◽  
Prolate Ellipsoidal ◽  
Quantized Levels

In this paper, we study the exciton absorption spectra in InGaAs prolate ellipsoidal quantum dots when a strong pump laser resonant with electron quantized levels is active. Our obtained results by renormalized wavefunction theory show that, under suitable conditions, the initial exciton absorption peak is split into two new peaks as the evidence of the existence of the three-level optical Stark effect of excitons. We have suggested an explanation of the origin of the effect as well as investigating the effect of pump field energy, size, and geometric shape of the quantum dots on effect characteristics. The comparison with the results obtained in the spherical quantum dots implies the important role of geometric shape of the quantum structures when we examine this effect.

Viewing Angle and the Perceived Orientation of Pictorial Elements: Geometric or Representational Effects?

Perception ◽  
1995 ◽  
Vol 24 (10) ◽  
pp. 1139-1153 ◽  
Author(s):  
Jan B Derȩgowski ◽  
Denis M Parker
Keyword(s):  
Mean Value ◽  
Geometric Shape ◽  
Systematic Change ◽  
Viewing Angle ◽  
Vertical Orientation ◽  
Geometric Properties ◽  
Geometric Shapes

The role of geometric shape properties in determining the perceived orientation (heading) change of picture elements was investigated in four experiments. In experiment 1 the systematic change in perceived heading of each of a depicted team of horses which projected irregular geometric shapes was measured. In experiment 2, involving silhouettes, the perceptual axes of these same horse shapes, together with those of a pair of enantiomorphic deltoid shapes, were derived. These derived shape axes were used in experiment 3, along with single oblique contours, to determine the degree of heading shift as a function of the complexity and orientation of the shape. The degree of heading shift was remarkably similar for both silhouette shapes and the single contours when the axes were oblique but, whereas vertical orientation was predicted to abolish heading shift, this was only true for the deltoid shapes. In experiment 4 a possible explanation of the nonpredicted heading shift for the vertically oriented horse silhouettes was investigated. Subjects' individual estimates of the axes of the horse shapes, rather than a group mean value, were used to set the horse shapes to the vertical. When viewing was from two positions no significant heading change with view was found. Taken as a whole the data suggest that the geometric properties of patterns, rather than their representative nature, determine the very obvious heading shift when pictures are viewed from different angles.

The Templating Role of Cyclohexylamine in the Synthesis of Microporous Aluminophosphates

1992 ◽  
Vol 57 (5) ◽  
pp. 938-945
Author(s):  
Heide-Lore Zubowa ◽  
Rolf Fricke ◽  
Hendrik Kosslick ◽  
F. Neissendorfer ◽  
E. Schreier
Keyword(s):  
Molecular Sieves ◽  
Orthophosphoric Acid ◽  
Geometric Shape ◽  
X Ray ◽  
Tg And Dta ◽  
Product Composition ◽  
Void Volumes

The investigation of the synthesis of AlPO4 molecular sieves from orthophosphoric acid and pseudoboehmite in the presence of cyclohexylamine shows that in this case the amine plays the role of template in the sense of "Template theory". The geometric shape of the template determines the dimensions of the channels within the AlPO4-lattices. The amount of template in the gel influences the void volumes, leading to different structures, however, with similar dimensions. The product composition is largely determined by the ratio amine/(Al,P)O2. The molecular sieves have been characterized by IR, X-ray, TG and DTA measurements.

Relative contribution of geometric shape and periodicity to resonant terahertz transmission

2010 ◽  
Vol 107 (11) ◽  
pp. 113109 ◽  
Author(s):  
J. W. Lee ◽  
D. S. Kim
Keyword(s):  
Geometric Shape ◽  
Relative Contribution ◽  
Terahertz Transmission

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor
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