Langmuir Cells

GitHub - LangmuirSim/langmuir: Langmuir is a Monte Carlo ...

GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up Langmuir is a Monte Carlo charge dynamics simulation engine for organic semiconductors, including FETs and solar cells

Langmuir–Blodgett artificial solid-electrolyte interphases ...

Sep 24, 2018 · A well-designed artificial solid-electrolyte interphase (ASEI) could help resolve multiple problems associated with the use of metallic Li anodes in batteries. Here, the authors develop a Langmuir ...

Langmuir Cells, Small Scale Eddies, and the Large-scale ... ... he_large-scale_ocean_a_modern_day_david_vs_goliath

Oct 15, 2012 · Langmuir cells are small (O(5-100m)), three-dimensional, circulations in the upper ocean. These cells often form into a jumbled array of cells called Langmuir Turbulence. Both Langmuir turbulence, and hence Langmuir cells, result from an interaction of surface waves and windstress.

CiteSeerX — The form and orientation of Langmuir cells for ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): [1] Large eddy simulations of the Craik-Leibovich equations are used to assess the effect of misaligned Stokes drift and wind direction on Langmuir cells in the ocean mixed layer. Misalignments from 0! to 135! are examined and Langmuir turbulence structures are evident in all cases.

1 Membranes—An Introduction - Wiley-VCH

Langmuir (1917) developed an apparatus in which molecular layers of lipids were spread at the air–water interface. With this monolayer trough (see Sec- tion 6.7 and Fig. 6.14) the lateral pressure of the monolayer films could be mea-

Langmuir Circulation - University of Wisconsin–Madison

The typical depth of langmuir cells (i.e. radius of the black circles above) is 4-6 m. However, certain effects can be observed up to 200 m below the water surface. The cells can be spaced anywhere from 10-50 meters apart. The length of the cells have been observed to be anywhere from a few meters long, to many kilometers into the ocean.

Langmuir Circulation - an overview | ScienceDirect Topics

Langmuir cells are organized counter-rotating cells in the surface layer (Figure 8), with axes roughly aligned with the wind. Their presence is indicated by surface convergence at the boundary of counter-rotating cells, where seaweed and flotsam accumulate.

Langmuir Circulation - ResearchGate

Since the Langmuir circulation is a characteristic phenomenon with a zonal and a circulation cell structure in the sea surface layer (Leibovich 1983; Thorpe 2004), Langmuir circulation could ...

Langmuir Cells

A pair of Langmuir cells in a laboratory tank (I) wind ...

Apr 01, 1992 · Three velocity components of subsurface flow, observed in a rectangular tank under the action of a constant wind speed, are measured systematically at mesh points distributed uniformly over a vertical cross-section of the tank. Measurements are carried out for two cases: 1) reference wind speedU r =7.5 m/s and fetchF=10 m; and 2)U r =10 m/s andF=25 m. A pair of Langmuir cells is observed for ...

Langmuir Circulation - EPOD - a service of USRA

Nov 16, 2016 · These Langmuir cells arise because of wind-generated shearing forces at the surface. Imagine two adjacent tubes of water just below the surface and in the direction of the wind. The one on your right circulates in a counter-clockwise fashion, and the other does so clockwise, creating an upwelling/downwelling effect, causing the scum to converge ...

(PDF) Langmuir cells and mixing in the upper ocean

Langmuir cells and mixing in the upper ocean. The presence of surface gravity waves at the ocean surface has two important effects on turbulence in the oceanic mixed layer (ML): the wave breaking and the Langmuir cells (LC).

Langmuir Circulation Likes the Bahamas - Langmuir Circulation

Particulate backscattering was an order of magnitude higher than that measured at other stations throughout the region. Some patches of fluctuating turbidity have been indicated on spatial scales that could be produced from Langmuir cells penetrating the 5-m water column.

Langmuir: Latest Articles (ACS Publications)

DOI: 10.1021/acs.langmuir.0c00526 [ASAP] Controlled Synthesis of Palladium Nanocubes as an Efficient Nanocatalyst for Suzuki–Miyaura Cross-Coupling and Reduction of p -Nitrophenol Langmuir

Langmuir - definition of Langmuir by The Free Dictionary

Define Langmuir. Langmuir synonyms, Langmuir pronunciation, Langmuir translation, English dictionary definition of Langmuir. Irving 1881-1957. American chemist. He won a 1932 Nobel Prize for his work in surface chemistry. n Irving. 1881–1957, US chemist. He developed the...

Lines On Water: Langmuir Circulation- often a nature lover ... ... muir-circulation-often-nature-lovers-destination-0

Nov 14, 2017 · Since winds are always variable – slow, faster, slower – what is called a variable shear force is produced resulting in circular rotation of water in a “cell which we call Langmuir circulation. These cells move water in a circle across the surface, down into the water column, back across the bottom, then up again. Adjacent cell tubes circulate in opposite directions, so they move and arrange …

What is Langmuir Circulation? - Langmuir Circulation

 The black circles represent long cells of rotating water pointed in the same direction as the wind.   As this water circulates past the surface, it catches material and transports it.   The cells...

Irving Langmuir - Biographical -

Irving Langmuir Biographical I rving Langmuir was born in Brooklyn, New York, on January 31, 1881, as the third of four sons of Charles Langmuir and Sadie, neé Comings. His early education was obtained in various schools and institutes in the USA, and in Paris (1892-1895).

Monolayer - Wikipedia

Langmuir monolayers are commonly used to mimic cell membrane to study the effects of pharmaceuticals or toxins. In cell culture a monolayer refers to a layer of cells in which no cell is growing on top of another, but all are growing side by side and often touching each other on the same growth surface. See also [ edit ]

Langmuir turbulence in the ocean | Journal of Fluid ... ... ence-in-the-ocean/638FD0E368140E5972144348DB930A38

Mar 10, 1997 · The horizontal scale of the Langmuir cells expands with depth, and there are also intense motions on a scale finer than the dominant cells very near the surface. In a turbulent PBL, Langmuir cells have irregular patterns with finite correlation scales in space and time, and they undergo occasional mergers in the vicinity of Y-junctions between ...

Langmuir - Journals - NCBI

Langmuir journal page at PubMed Journals. Published by American Chemical Society, Langmuir journal page at PubMed Journals. Published by American Chemical Society, ... Diatoms are unicellular algae that construct cell walls called frustules by the precipitation of silica, using special proteins that order the silica into a wide variety of ...

The form and orientation of Langmuir cells for misaligned ...

The adjusted scaling projects the friction velocity (aligned with the wind stress) into the dominant axial direction of the Langmuir cells. The turbulent Langmuir number is generalized through a similar projection into the axial direction of the Langmuir cells, which reduces its value in realistic conditions. For known Langmuir cell orientations, the strength of Langmuir turbulence for misaligned cases can be …

Langmuir Volume - an overview | ScienceDirect Topics

The Langmuir desorption model with Langmuir pressure of 535 psi, Langmuir volume of 196.4 scf/ton, and bulk density of 2.52 g/cm 3 is used for verification. The comparison of gas flow rate between this model, analytical model, and numerical model by considering the gas desorption effect is shown in Fig. 3.20, illustrating that a good match between them is obtained.

Langmuir | definition of Langmuir by Medical dictionary

Langmuir: ( lang'mwēr ), Irving, U.S. chemist and Nobel laureate, 1881-1957. See: Langmuir trough .

Langmuir Systems | CrossFire CNC Plasma Tables

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Langmuir is an efficient Monte Carlo charge dynamics simulation engine for organic semiconductors, including field effect transistors (OFETs) and solar cells (OPVs). It specializes in treating defects, disorder, and mixtures, with explicit electrostatics between charge carriers and defects.

The Ekman spiral and Langmuir circulation - Oceans and Climate

Apr 20, 2020 · Small-scale circulation cells driven by this spiral are known as Langmuir circulation cells. 2.10.1 The Ekman spiral. In the winter of 1893/4 Fridtjof Nansen's vessel, Fram, was stuck fast in the Arctic ice pack, 500 km north of Russia.

Langmuir monolayers - Soft-Matter

A Langmuir monolayer is a layer of amphiphilic molecules that forms at the interface between air and water the has the thickness of a single molecular length. To form this monolayer, the surfactant molecules must be insoluble in water. In 1932, Irvine Langmuir won the Nobel Prize in Chemistry for his investigations on the monolayers that bear his name (Reference 1). The general idea is that amphiphilic molecules have a hydrophilic (…

Langmuir Cells Convergence

History of the Theoretical Models of the Cell ... - Timetoast

Langmuir was an industrial research scientist at General Electric in New York. There, he studied lipids and the interaction of the oil film and water. He proposed that the fatty acid molecules in lipids oriented themselves vertically with the hydrocarbon chains away from the water and the carboxyl group in contact with the surface of the water.