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What is the Langmuir-Blodgett technique?

What is the Langmuir-Blodgett technique?

The Langmuir-Blodgett (LB) technique is a way of making supra-molecular assembly in ultrathin films with a controlled layered structure and crystal parameter, which have many envisioned technological applications for optical and molecular electronic devices as well as signal processing and transformation.

How does Langmuir trough work?

The LB trough allows investigators to prepare a monolayer of amphiphilic molecules on the surface of a liquid, and then compress or expand these molecules on the surface, thereby modifying the molecular density, or area per molecule.

What are Langmuir-Blodgett films used for?

Langmuir Films are thin organic films of a thickness of just one molecule and are the source of high expectations. As useful components in many practical and commercial applications such as sensors, detectors, displays and electronic circuit components.

What are Langmuir monolayers?

A Langmuir monolayer or insoluble monolayer is a one-molecule thick layer of an insoluble organic material spread onto an aqueous subphase in a Langmuir-Blodgett trough. Traditional compounds used to prepare Langmuir monolayers are amphiphilic materials that possess a hydrophilic headgroup and a hydrophobic tail.

How do you make Langmuir-Blodgett movie?

Langmuir films are formed when amphiphilic (surfactants) molecules or nanoparticles are spread on the water at an air–water interface. Surfactants (or surface-acting agents) are molecules with hydrophobic ‘tails’ and hydrophilic ‘heads’.

What does LB mean in film?

A Langmuir-Blodgett (LB) film is a set of monolayers, or layers of organic material one molecule thick, deposited on a solid substrate. An LB film can consist of a single layer or many, up to a depth of several visible-light wavelength s.

How are self assembled monolayers formed?

Figure 1 Self-assembled monolayers are formed by simply immersing a substrate into a solution of the surface-active material. The driving force for the spontaneous formation of the 2D assembly includes chemical bond formation of molecules with the surface and intermolecular interactions.

Which technology is used in Langmuir-Blodgett film?

The Langmuir‐Blodgett (LB) methodology is based on the transfer process of a monolayer adsorbed at the water interface, Langmuir film, from the air‐water interface onto solids by vertical dipping of the substrate immersed on the subphase.

How do you calculate monolayer thickness?

The number of monolayers (ML) as a function of the OH concentration on the substrate surface is calculated and is found to be in the range of 58.4– 24.2% of the total number of cycles of deposition. Effective monolayer thickness is calculated as 0.31 nm. Keywords.

What is insoluble monolayer?

Insoluble monolayers are those whose molecules remain on the surface when the monolayer is expanded or compressed, either because the reservoir is too small or because not enough time is allowed for equilibrium to be attained.

What is mean molecular area?

mean molecular area = effective area of trough / number of molecules spread. you need to take care of the conversion factors like( milli to micro and vice versa)

What does LB mean in TV?

daveev1. +3 more. 40 Messages. 14 years ago. Letterbox means the (usually movie) image is in the 16:9 wide screen aspect ratio, usually shown on an SD system with a black bar at the top and bottom of the screen.

What do you need to know about the Langmuir Blodgett?

Langmuir-Blodgett troughs include a set of barriers (2), a Langmuir-Blodgett trough top (3*), a surface pressure sensor (4) and a dipping mechanism (5) as standard. The Langmuir-Blodgett trough top holds the liquid phase and has a well in the center to allow space for solid substrate dipping through the monolayer.

What are the advantages of the Langmuir trough?

The Langmuir and Langmuir-Blodgett technologies have unique advantages leading to extensive usage of the method worldwide. These benefits include: In this 3-minute video, you can explore the possibilities of our Langmuir and Langmuir-Blodgett troughs.

When did kibron Langmuir Blodgett first come out?

Since its founding, 1994, Kibron has focused on innovation, user benefits and dependable service. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

Can a KSV Nima be used with a Langmuir trough top?

KSV NIMA troughs are built on a frame (1) that enables outstanding modularity; a Langmuir-Blodgett trough top can be easily switched with a Langmuir trough top. The dipping mechanism can also be added or removed for simple conversion between Langmuir and Langmuir-Blodgett configurations.

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