Langmuir–Blodgett Trough

A Langmuir–Blodgett trough is a laboratory apparatus that is used to compress monolayers of molecules on the surface of a given subphase (usually water) and measures surface phenomena due to this compression. It can also be used to deposit single or multiple monolayers on a solid substrate.

Read more about Langmuir–Blodgett Trough:  Preparations of Langmuir–Blodgett Troughs, Explanation of Uses, Buying Vs. Building, Experiments, History

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Langmuir–Blodgett Trough - History
... This simple device was a trough made from a tin pan with tin inserts for determining the size of the surface and a balance with a 6 mm disk on one end to measure the force required to pull the disk from the surface ... After the turn of the century, Pockels’ trough was improved upon by Irving Langmuir ... She made final developments to the Langmuir–Blodgett trough allowing it to be used to easily transfer films to solid surfaces ...