Gallium nitride (GaN) bulk modulus

В статье представлены результаты исследования возможности применения при криогенных температурах водородного уровня дискретных приборов и монолитных схем на основе нитрида галлия в составе малошумящих усилителей сантиметрового и миллиметрового диапазона длин волн для приемных устройств систем дистанционного зондирования Земли из космоса и в составе криогенных комплексов наблюдения космического пространства. The article presents the results of the research on the possibility of using discrete devices and gallium nitride monolithic circuits at the cryogenic temperatures of hydrogen level as part of low-noise amplifiers of centimeter and millimeter-wave bands used in receivers of Earth remote sensing space systems and in cryogenic systems for space observation.

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Luminescence properties of gallium nitride layers grown on silicon carbide substrates by gas-phase epitaxy in a chloride system

Semiconductors ◽

10.1134/1.1187206 ◽

1997 ◽

Vol 31 (5) ◽

pp. 523 ◽

Cited By ~ 5

Author(s):

A. S. Zubrilov

Keyword(s):

Silicon Carbide ◽

Gallium Nitride ◽

Gas Phase ◽

Luminescence Properties ◽

Chloride System ◽

Nitride Layers

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Powerful Gallium Nitride Microwave Transistors on Silicon Substrates

Nanotechnologies in Russia ◽

10.1134/s1995078020020123 ◽

2020 ◽

Vol 15 (2) ◽

pp. 169-174

Author(s):

Yu. V. Khrapovitskaya ◽

M. Y. Chernykh ◽

I. S. Ezubchenko ◽

Yu. V. Grishchenko ◽

I. O. Mayboroda ◽

...

Keyword(s):

Gallium Nitride ◽

Silicon Substrates ◽

Microwave Transistors

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Biomechanical Measurement of Rabbit Cornea by a Modified Scheimpflug Device

Journal of Ophthalmology ◽

10.1155/2016/8271762 ◽

2016 ◽

Vol 2016 ◽

pp. 1-6

Author(s):

Bo Zhang ◽

Jianjun Gu ◽

Xiaoxiao Zhang ◽

Bin Yang ◽

Zheng Wang ◽

...

Keyword(s):

Bulk Modulus ◽

Correlation Coefficient ◽

Intraclass Correlation Coefficient ◽

Intraclass Correlation ◽

Anterior Segment ◽

Intraobserver Reliability ◽

Rabbit Cornea ◽

Deformation Response ◽

Biomechanical Measurements ◽

Biomechanical Measurement

Purpose. To explore the probability and variation in biomechanical measurements of rabbit cornea by a modified Scheimpflug device.Methods. A modified Scheimpflug device was developed by imaging anterior segment of the model imitating the intact eye at various posterior pressures. The eight isolated rabbit corneas were mounted on the Barron artificial chamber and images of the anterior segment were taken at posterior pressures of 15, 30, 45, 60, and 75 mmHg by the device. The repeatability and reliability of the parameters including CCT, ACD, ACV, and CV were evaluated at each posterior pressure. All the variations of the parameters at the different posterior pressures were calculated.Results. All parameters showed good intraobserver reliability (Cronbach’s alpha; intraclass correlation coefficient,α, ICC > 0.96) and repeatability in the modified Scheimpflug device. With the increase of posterior pressures, the ratio of CCT decreased linearly and the bulk modulus gradually reduced to a platform. The increase of ACD was almost linear with the posterior pressures elevated.Conclusions. The modified Scheimpflug device was a valuable tool to investigate the biomechanics of the cornea. The posterior pressure 15–75 mmHg range produced small viscoelastic deformations and nearly linear pressure-deformation response in the rabbit cornea.

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