Monolayer studies

Sheppard, Erwin; Tcheurekdjian, Noubar

doi:10.1016/0021-9797(68)90080-5

Cited by 54 publications

(29 citation statements)

References 4 publications

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“…The resulting average surface lead to an average diameter of 804 nm for a spherical particle, and this average diameter is about twice as large as the sizes determined from TEM and dynamic light scattering measurements. This indicates that the latex particles spread in the limited area are relatively more loosely packed than those observed by Sheppard and Tcheurekdjian [18] owing to the steric repulsion of the DAAM chains. The presence of the hydrophilic DAAM chains causes the collapse pressure observed in Fig.…”

Section: Surface Pressure Isothermsmentioning

confidence: 81%

“…Over four decades ago, polystyrene (PS) latex particles were found to be spread as a monolayer at the air-water interface by Schuller [17] and Sheppard and Tcheurekdjian [18]. Recently, Ma et al [19] have deeply measured the surface pressures of oneand two-component PS latex particles with different functional surface groups in great detail.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Surface dilational moduli of latex-particle monolayers spread at air–water interface

Kobayashi

Kawaguchi

2013

Journal of Colloid and Interface Science

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Section: Surface Pressure Isothermsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 98%

Surface dilational moduli of latex-particle monolayers spread at air–water interface

Kobayashi

Kawaguchi

2013

Journal of Colloid and Interface Science

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“…[39,76] and was taken up by Fulda and Tieke in the 1990s for the examination of nanoscopic polystyrene colloids. [77][78] The surface-pressure area isotherms of colloid films are extremely steep as is expected in a incompressible, crystalline and stiff film at the interface.…”

Section: Crystallization On a Langmuir Troughmentioning

confidence: 99%

Surface Patterning with Colloidal Monolayers

Vogel

2012

Springer Theses

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This thesis focuses on the controlled assembly of monodisperse polymer colloids into ordered two-dimensional arrangements. These assemblies, commonly referred to as colloidal monolayers, are subsequently used as masks for the generation of arrays of complex metal nanostructures on solid substrates.The motivation of the research presented here is twofold. First, monolayer crystallization methods were developed to simplify the assembly of colloids and to produce more complex arrangements of colloids in a precise way. Second, various approaches to colloidal lithography are designed with the aim to include novel features or functions to arrays of metal nanostructures.The air/water interface was exploited for the crystallization of colloidal monolayer architectures as it combines a two-dimensional confinement with a high lateral mobility of the colloids that is beneficial for the creation of high long range order. A direct assembly of colloids is presented that provides a cheap, fast and conceptually simple methodology for the preparation of ordered colloidal monolayers. The produced two-dimensional crystals can be transformed into nonclose-packed architectures by a plasma-induced size reduction step, thus providing valuable masks for more sophisticated lithographic processes. Finally, the controlled co-assembly of binary colloidal crystals with defined stoichiometries on a Langmuir trough is introduced and characterized with respect to accessible configurations and size ratios.Several approaches to lithography are presented that aim at introducing different features to colloidal lithography. First, using metal-complex containing latex particles, the synthesis of which is described as well, symmetric arrays of metal nanoparticles can be created by controlled combustion of the organic material of the colloids. The process does not feature an inherent limit in nanoparticle size and is able to produce complex materials as will be demonstrated for FePt alloy particles. Precise control over both size and spacing of the particle array is presented.Second, two lithographic processes are introduced to create sophisticated nanoparticle dimer units consisting of two crescent shaped nanostructures in close proximity; essentially by using a single colloid as mask to generate two structures simultaneously. Strong coupling processes of the parental plasmon resonances of the two objects are observed that are accompanied by high near-field enhancements. A plasmon hybridization model is elaborated to explain all polarization dependent shifts of the resonance positions. Last, a technique to produce laterally patterned, ultra-flat substrates without surface topographies by embedding gold nanoparticles in a silicon dioxide matrix is applied to construct robust and re-usable sensing architectures and to introduce an approach for the nanoscale patterning of solid supported lipid bilayer membranes.

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“…they can be studied though the surface pressure/area isotherms. Early studies of this kind were performed in the sixties and seventies of the last century with spherical monodisperse polystyrene particles and allowed to obtain information on particle sizes and particle-particle repulsive interactions [57][58][59][60][61]. In particular, it was shown in [57] that the collapse pressure is greatest if the particles are monodisperse.…”

Section: Surface Pressure/area Isothermsmentioning

confidence: 98%