scholarly journals Transparent thin film polarizing and optical control systems

AIP Advances ◽  
2011 ◽  
Vol 1 (2) ◽  
pp. 022153 ◽  
Author(s):  
Nelson V. Tabiryan ◽  
Sarik R. Nersisyan ◽  
Timothy J. White ◽  
Timothy J. Bunning ◽  
Diane M. Steeves ◽  
...  
Keyword(s):  
Thin Film ◽  
Control Systems ◽  
Optical Control

IDENTIFICATION AND DETERMINATION OF LIGHT MARKS WHEN THEY OVERLAP IN OPTICAL CONTROL SYSTEMS

2019 ◽  
pp. 4-13
Author(s):  
V. E. Makhov ◽  
V. V. Shirobokov ◽  
A. I. Potapov
Keyword(s):  
Experimental Data ◽  
Mathematical Method ◽  
Wavelet Transform ◽  
Control Systems ◽  
Theoretical Calculations ◽  
Electronic System ◽  
Optical Control ◽  
Continuous Wavelet ◽  
Virtual Device

The issues of identification and determination of the relative position of localized light marks and images of small-sized objects recorded by an optical-electronic system (OES) are considered. A physical model and a research virtual device (VI) were developed on the basis of National Instruments software for identification and coordinate determination of two light marks at their different relative positions and the ratio of their intensities. It is shown that the use of a mathematical method for analyzing the illumination contour of two light labels on the basis of a continuous wavelet transform (CWT) allows identifying each label separately and determining the degree of superposition of their images. It is shown that the amplitudes and positions of the maxima of the CWT coefficients are related to the relative shift of the illuminance contours of the light marks, as the marking contours separate, the dependence of the position of the maxima becomes linear. The result of comparing the experimental data with theoretical calculations for the models of light labels showed a match within 25 %.

Ferromagnetic Shape Memory Thin Film In-Plane Actuators: Assessment of Mechanical Output

2007 ◽  
Author(s):  
Vesselin Stoilov
Keyword(s):  
Thin Film ◽  
Shape Memory ◽  
Control Systems ◽  
Multiscale Model ◽  
Servo Control ◽  
Ferromagnetic Shape Memory Alloy ◽  
Shape Memory Actuators ◽  
Micro Actuators ◽  
Concurrent Simulation ◽  
Ferromagnetic Shape Memory

Ferromagnetic shape memory alloy micro actuators and motors are promising for applications in various servo control systems, with the potential to provide ultra(sub-nano)-precision positioning and compensation. This article shows that in an in-plane configuration, thin film ferromagnetic shape memory actuators open the possibility to reach more powerful actuators keeping the same geometric dimensions by simply stacking these films. The assessment of mechanical output for the FSMA thin film actuators have been done with a multiscale model, which allowed for concurrent simulation of the phenomena at atomic and mesoscale.

Fast-steering mirrors in optical control systems

1990 ◽  
Author(s):  
Reynold W. Cochran ◽  
Richard H. Vassar
Keyword(s):  
Control Systems ◽  
Optical Control

scholarly journals THE USE OF LIQUID PROBES BASED ON AN EUTECTIC SOLUTION FOR STUDYING THE CONDUCTING PROPERTIES OF THIN FILMS

2021 ◽  
pp. 338-344
Author(s):  
Никита Вадимович Пермяков
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Contact Area ◽  
Vertical Axis ◽  
Mechanical Deformation ◽  
Optical Control ◽  
Contact Areas ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Indium Gallium

Работа посвящена разработке модульной четрырехзондовой установки с использованием жидкого контакта на основе индий-галлиевого эвтектического раствора (EGaIn), с помощью которого можно создать прижимные жидкие контакты, не вносящие механические деформации в измеряемые структуры. Предлагается использовать данную установку для измерения вольт-амперных характеристик тонкопленочных образцов. Предполагается модульная схема измерений. Каждый зонд управляется четырьмя моторами для позиционирования и выдавливания капли из шприца для формирования нужного размера пятна контакта. Используется оптический контроль для подготовки зондов и измерения диаметра сформированных контактных областей. Подобраны параметры изготовления жидких зондов, а именно скорости выдавливания и перемещения зонда вдоль вертикальной оси для формирования капли конической формы . Управление установкой осуществляется в среде LabView. The work is devoted to development of a modular four-probe setup using a liquid contact based on an indium-gallium eutectic solution (EGaIn), which can be used to create clamping liquid contacts that do not introduce mechanical deformation into the measured structures. It is proposed to use this setup for measuring the current-voltage characteristics of thin-film samples. A modular measurement scheme is assumed. Each probe is driven by four motors to position and expel a drop from the syringe to form the desired contact area size. Optical control is used to prepare the probes and measure the diameter of the formed contact areas. The parameters for the manufacture of liquid probes are selected, namely, the speed of extrusion and movement of the probe along the vertical axis to form a conical droplet. The installation is controlled in the LabView environment.

Contemporary System Of Direct Broadband Optical Monitoring Of Thickness Of Spray Optical Coatings

2020 ◽  
pp. 48-52
Author(s):  
Oleg F. Prosovsky ◽  
Alexander Yu. Budnev ◽  
Dmitry G. Denisov ◽  
Nikolay V. Baryshnikov ◽  
Yuri O. Prosovsky
Keyword(s):  
Control System ◽  
Control Systems ◽  
Optical Filters ◽  
Optical Control ◽  
Spectral Transmission ◽  
Operating Characteristics ◽  
Indirect Control ◽  
New Construction ◽  
Output Characteristics ◽  
Sprayed Coatings

In this article, construction schemes direct and indirect control systems were analyzed, and new construction, providing high operating characteristics for optic filters, was introduced. Authors introduce the original decision for creation modern broadband optic control system. Based on the proposed method, approbation of created system was made, and output characteristics control system – spectral transmission dependencies were introduced as a result. Spectral transmission dependencies of interference optical filters, made with different optical control systems were analyzed. Conclusions and prognoses about further developments of direct broadband optic control system for thickness sprayed coatings were made.

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