State-of-the-art in two-dimensional ultrasonic transducer array technology

1976 ◽  
Vol 3 (5) ◽  
pp. 312-318 ◽  
Author(s):  
M. G. Maginness ◽  
J. D. Plummer ◽  
W. L. Beaver ◽  
J. D. Meindl
Keyword(s):  
State Of The Art ◽  
Ultrasonic Transducer ◽  
Two Dimensional ◽  
Transducer Array ◽  
Array Technology

Two-dimensional ultrasonic transducer array for shear wave elastography in deep tissues: a preliminary study

2020 ◽  
Vol 36 (3) ◽  
pp. 277-289
Author(s):  
Djalma Simões dos Santos ◽  
Fernando Mitsuyama Cardoso ◽  
Sérgio Shiguemi Furuie
Keyword(s):  
Shear Wave ◽  
Ultrasonic Transducer ◽  
Shear Wave Elastography ◽  
Two Dimensional ◽  
Transducer Array ◽  
Preliminary Study

First-Principles Evaluation of the Potential of Borophene as a Monolayer Transparent Conductor

2017 ◽  
Author(s):  
Lyudmyla Adamska ◽  
Sridhar Sadasivam ◽  
Jonathan J. Foley ◽  
Pierre Darancet ◽  
Sahar Sharifzadeh
Keyword(s):  
First Principles ◽  
Density Functional ◽  
State Of The Art ◽  
Transparent Electrode ◽  
Visible Range ◽  
Two Dimensional ◽  
Transparent Conductor ◽  
Many Body ◽  
Functional Theory ◽  
Many Body Perturbation Theory

Two-dimensional boron is promising as a tunable monolayer metal for nano-optoelectronics. We study the optoelectronic properties of two likely allotropes of two-dimensional boron using first-principles density functional theory and many-body perturbation theory. We find that both systems are anisotropic metals, with strong energy- and thickness-dependent optical transparency and a weak (<1%) absorbance in the visible range. Additionally, using state-of-the-art methods for the description of the electron-phonon and electron-electron interactions, we show that the electrical conductivity is limited by electron-phonon interactions. Our results indicate that both structures are suitable as a transparent electrode.

State-of-the-Art of Modeling Surface Water Impoundments

1982 ◽  
Vol 14 (1-2) ◽  
pp. 241-261 ◽  
Author(s):  
P A Krenkel ◽  
R H French
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
State Of The Art ◽  
Rate Coefficients ◽  
Two Dimensional ◽  
One Dimensional ◽  
Integral Energy ◽  
Range Of Values ◽  
Dimensional Integral ◽  
Water Impoundment

The state-of-the-art of surface water impoundment modeling is examined from the viewpoints of both hydrodynamics and water quality. In the area of hydrodynamics current one dimensional integral energy and two dimensional models are discussed. In the area of water quality, the formulations used for various parameters are presented with a range of values for the associated rate coefficients.

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