Using polystyrene spheres to produce thin, porous interlayers in alumina laminates

Dynamic Scanning Electron Microscopy of Small Particles

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010011502x ◽

1975 ◽

Vol 33 ◽

pp. 280-281

Author(s):

W. Krakow ◽

W. C. Nixon

Keyword(s):

Electron Microscopy ◽

Low Noise ◽

Time Sequence ◽

Field Of View ◽

Video Tape ◽

Small Particles ◽

Polystyrene Spheres ◽

Field Distributions ◽

Dynamic Scanning ◽

Scanning Electron

The scanning electron microscope (SEM) can be run at television scanning rates and used with a video tape recorder to observe dynamic specimen changes. With a conventional tungsten source, a low noise TV image is obtained with a field of view sufficient to cover the area of the specimen to be recorded. Contrast and resolution considerations have been elucidated and many changing specimens have been studied at TV rates.To extend the work on measuring the magnitude of charge and field distributions of small particles in the SEM, we have investigated their motion and electrostatic interaction at TV rates. Fig. 1 shows a time sequence of polystyrene spheres on a conducting grating surface inclined to the microscope axis. In (la) there are four particles present in the field of view, while in (lb) a fifth particle has moved into view.

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Scanning luminescence x-ray microscopy: Progress toward selective staining using microspheres

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100168104 ◽

1994 ◽

Vol 52 ◽

pp. 74-75

Author(s):

C. Jacobsen ◽

J. Fu ◽

S. Mayer ◽

Y. Wang ◽

S. Williams

Keyword(s):

Visible Light ◽

Active Sites ◽

Light Emission ◽

Chinese Hamster ◽

Polystyrene Spheres ◽

Good Resistance ◽

X Ray ◽

Selective Staining ◽

Visible Light Emission ◽

Specific Labelling

In scanning luminescence x-ray microscopy (SLXM), a high resolution x-ray probe is used to excite visible light emission (see Figs. 1 and 2). The technique has been developed with a goal of localizing dye-tagged biochemically active sites and structures at 50 nm resolution in thick, hydrated biological specimens. Following our initial efforts, Moronne et al. have begun to develop probes based on biotinylated terbium; we report here our progress towards using microspheres for tagging.Our initial experiments with microspheres were based on commercially-available carboxyl latex spheres which emitted ~ 5 visible light photons per x-ray absorbed, and which showed good resistance to bleaching under x-ray irradiation. Other work (such as that by Guo et al.) has shown that such spheres can be used for a variety of specific labelling applications. Our first efforts have been aimed at labelling ƒ actin in Chinese hamster ovarian (CHO) cells. By using a detergent/fixative protocol to load spheres into cells with permeabilized membranes and preserved morphology, we have succeeded in using commercial dye-loaded, spreptavidin-coated 0.03μm polystyrene spheres linked to biotin phalloidon to label f actin (see Fig. 3).

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Controllable transport mean free path of light in xerogel matrixes embedded with polystyrene spheres

Optics Express ◽

10.1364/oe.17.006975 ◽

2009 ◽

Vol 17 (9) ◽

pp. 6975 ◽

Cited By ~ 2

Author(s):

Boris P. Bret ◽

Nuno J. Couto ◽

Mariana Amaro ◽

Eduardo J. Nunes-Pereira ◽

Michael Belsley

Keyword(s):

Free Path ◽

Mean Free Path ◽

Polystyrene Spheres

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Superhydrophilic Coating of Pine Wood by Plasma Functionalization of Self-Assembled Polystyrene Spheres

Coatings ◽

10.3390/coatings11020114 ◽

2021 ◽

Vol 11 (2) ◽

pp. 114

Author(s):

Sebastian Dahle ◽

John Meuthen ◽

René Gustus ◽

Alexandra Prowald ◽

Wolfgang Viöl ◽

...

Keyword(s):

Dip Coating ◽

Face Centered Cubic ◽

Wood Substrate ◽

Polystyrene Spheres ◽

Pine Wood ◽

Self Assembling ◽

Monodisperse Polystyrene ◽

Self Assembled ◽

Face Centered ◽

Plasma Functionalization

Self-assembling films typically used for colloidal lithography have been applied to pine wood substrates to change the surface wettability. Therefore, monodisperse polystyrene (PS) spheres have been deposited onto a rough pine wood substrate via dip coating. The resulting PS sphere film resembled a polycrystalline face centered cubic (FCC)-like structure with typical domain sizes of 5–15 single spheres. This self-assembled coating was further functionalized via an O2 plasma. This plasma treatment strongly influenced the particle sizes in the outermost layer, and hydroxyl as well as carbonyl groups were introduced to the PS spheres’ surfaces, thus generating a superhydrophilic behavior.

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Binary Self-Assembly of Nanocolloidal Arrays using Concurrent and Sequential Spin Coating Techniques

Materials ◽

10.3390/ma14020274 ◽

2021 ◽

Vol 14 (2) ◽

pp. 274

Author(s):

Shih-Jyun Shen ◽

Demei Lee ◽

Yu-Chen Wu ◽

Shih-Jung Liu

Keyword(s):

Silicon Substrate ◽

Self Assembly ◽

Spin Coating ◽

Processing Parameters ◽

The Self ◽

Silicon Substrates ◽

Processing Conditions ◽

Polystyrene Spheres ◽

Optimal Processing ◽

Spin Coater

This paper reports the binary colloid assembly of nanospheres using spin coating techniques. Polystyrene spheres with sizes of 900 and 100 nm were assembled on top of silicon substrates utilizing a spin coater. Two different spin coating processes, namely concurrent and sequential coatings, were employed. For the concurrent spin coating, 900 and 100 nm colloidal nanospheres of latex were first mixed and then simultaneously spin coated onto the silicon substrate. On the other hand, the sequential coating process first created a monolayer of a 900 nm nanosphere array on the silicon substrate, followed by the spin coating of another layer of a 100 nm colloidal array on top of the 900 nm array. The influence of the processing parameters, including the type of surfactant, spin speed, and spin time, on the self-assembly of the binary colloidal array were explored. The empirical outcomes show that by employing the optimal processing conditions, binary colloidal arrays can be achieved by both the concurrent and sequential spin coating processes.

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Interaction-tailored organization of large-area colloidal assemblies

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.9.150 ◽

2018 ◽

Vol 9 ◽

pp. 1582-1593 ◽

Cited By ~ 4

Author(s):

Silvia Rizzato ◽

Elisabetta Primiceri ◽

Anna Grazia Monteduro ◽

Adriano Colombelli ◽

Angelo Leo ◽

...

Keyword(s):

Film Formation ◽

Low Cost ◽

Interparticle Distance ◽

Particle Interactions ◽

Polystyrene Spheres ◽

Large Area ◽

Nanoscale Patterning ◽

Particle Solution ◽

Number Of Particles ◽

Deposition Conditions

Colloidal lithography is an innovative fabrication technique employing spherical, nanoscale crystals as a lithographic mask for the low cost realization of nanoscale patterning. The features of the resulting nanostructures are related to the particle size, deposition conditions and interactions involved. In this work, we studied the absorption of polystyrene spheres onto a substrate and discuss the effect of particle–substrate and particle–particle interactions on their organization. Depending on the nature and the strength of the interactions acting in the colloidal film formation, two different strategies were developed in order to control the number of particles on the surface and the interparticle distance, namely changing the salt concentration and absorption time in the particle solution. These approaches enabled the realization of large area (≈cm2) patterning of nanoscale holes (nanoholes) and nanoscale disks (nanodisks) of different sizes and materials.

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