<title>Light control of molecular order and applications</title>

Use of light microscopy in the qualitative and quantitative study of liquid crystalline order

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100121727 ◽

1992 ◽

Vol 50 (1) ◽

pp. 264-265

Author(s):

Christopher Viney

Keyword(s):

Light Microscopy ◽

Liquid Crystalline ◽

Structural Characteristics ◽

Molecular Order ◽

Liquid Crystalline Phases ◽

Convenient Technique ◽

Liquid Crystalline Materials ◽

Transparent Windows

Light microscopy is a convenient technique for characterizing molecular order in fluid liquid crystalline materials. Microstructures can usually be observed under the actual conditions that promote the formation of liquid crystalline phases, whether or not a solvent is required, and at temperatures that can range from the boiling point of nitrogen to 600°C. It is relatively easy to produce specimens that are sufficiently thin and flat, simply by confining a droplet between glass cover slides. Specimens do not need to be conducting, and they do not have to be maintained in a vacuum. Drybox or other controlled environmental conditions can be maintained in a sealed chamber equipped with transparent windows; some heating/ freezing stages can be used for this purpose. It is relatively easy to construct a modified stage so that the generation and relaxation of global molecular order can be observed while specimens are being sheared, simulating flow conditions that exist during processing. Also, light only rarely affects the chemical composition or molecular weight distribution of the sample. Because little or no processing is required after collecting the sample, one can be confident that biologically derived materials will reveal many of their in vivo structural characteristics, even though microscopy is performed in vitro.

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AUTOMATIC STREET LIGHT CONTROL SYSTEM USING WSN BASED ON VEHICLE MOVEMENT AND ATMOSPHERIC CONDITION

International Journal of communication and computer Technologies ◽

10.31838/ijccts/05.01.02 ◽

2019 ◽

Vol 5 (1) ◽

Keyword(s):

Control System ◽

Atmospheric Condition ◽

Light Control ◽

Vehicle Movement

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Synthetic Biological Approaches for Optogenetics and Tools for Transcriptional Light‐Control in Bacteria

Advanced Biology ◽

10.1002/adbi.202000256 ◽

2021 ◽

pp. 2000256

Author(s):

Armin Baumschlager ◽

Mustafa Khammash

Keyword(s):

Light Control

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A low-cost web-based smart street lighting geographical information system for smaller towns and villages

Open Computer Science ◽

10.1515/comp-2020-0205 ◽

2020 ◽

Vol 10 (1) ◽

pp. 450-458

Author(s):

Filip Pružinec ◽

Peter Mego ◽

Renata Đuračiová

Keyword(s):

Information System ◽

Geographical Information System ◽

Web Application ◽

Low Cost ◽

Geographical Information ◽

Light Control ◽

Street Lighting ◽

Lighting Control ◽

Manual Adjustment ◽

Control Service

AbstractThe use of LED lights in smart street lighting to save energy is efficient and very common in many developed cities. However, such a system results in higher initial costs, which may discourage smaller towns and villages from its purchasing. This paper therefore deals with the design and development of a smart street lighting control system for smaller cities and villages. Such a system is required to be economical from the perspective of development and production. Considering other requirements such as platform independence, high availability and broad support, we proposed to build a system as a web application using a custom light control service component. The result is a web application that consists of a user interface served by a web server and an application server used to communicate with light control service. In addition, the system is designed as a geographical information system to be easy to use for managing street lights in groups or individually, while displaying them on the map. The system allows automatic sensor-based light intensity modulation by default with the possibility of manual adjustment or override of the illumination. It also includes a device error notification system with a tool to navigate faulty devices. The presented system is a low-cost solution for intelligent street lighting control designed for smaller cities or villages. They can apply the designed architecture of the system and the specific technologies suitable because of their low-cost implementation.

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