Nonspherical ZnS colloidal building blocks for three-dimensional photonic crystals

Liddell, Chekesha M.; Summers, Christopher J.

doi:10.1016/j.jcis.2003.12.012

Cited by 30 publications

(24 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nonspherical particles are currently being considered for a wide range of applications including: electronic devices (Appell 2002;Evoy et al 2004;Beckman et al 2005;Park et al 2004); wave guides (Greytak et al 2005); construction of photonic crystals (Liddell and Summers 2004); and biological, sensing, separation, or lab-on-a-chip systems (Patolsky et al 2006a, b;Hamers et al 2006;Reich et al 2003;Stone et al 2004;Hughes 2000). In certain cases, controlled transport and manipulation of single particles may be useful or necessary.…”

Section: Introductionmentioning

confidence: 99%

Transient simulations of the electrophoretic motion of a cylindrical particle through a 90° corner

Davison

Sharp

2007

Microfluid Nanofluid

View full text Add to dashboard Cite

The trajectory of a cylindrical particle driven by electrophoresis was transiently simulated as the particle moves through a 90°corner. A variety of system parameters were tested to determine their impact on the particle motion. The zeta potential, channel width, and particle aspect ratio were shown to have a minimal effect on the particle motion. Conversely, the initial vertical position of the particle and initial angle with respect to the horizontal had a significant impact on the particle motion. The presence of the 90°corner acts to reduce the initial distribution of angles to the vertical of 90°to less than 30°, demonstrating the possibility of using a corner as a passive control element as part of a larger microfluidic system. However, the reduction in angle is limited to the area near the corner posing a limitation on this means of control.

show abstract

Section: Introductionmentioning

confidence: 99%

Transient simulations of the electrophoretic motion of a cylindrical particle through a 90° corner

Davison

Sharp

2007

Microfluid Nanofluid

View full text Add to dashboard Cite

show abstract

“…The polystyrene core was assumed to be a nonporous solid and the ZnS shell was assumed to contain pores in which solvent was trapped [32]. In Fig.…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

Chemical bath deposition synthesis of sub-micron ZnS-coated polystyrene

Huang

Rajendran

Liddell

2007

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…6 Another feature of these particles is their ability to spontaneously assemble into new kinds of supramolecular complex structures 2,7 in addition to their potential applications in targeted drug delivery, 8 controlled loading of catalyst, 9 and photonic crystals. 10 For instance, particles decorated with hydrophobic and hydrophilic regions on either half of the particle (Janus particles) surface provide different affinity to liquid phases and act as "particulate surfactant" in stabilizing what is known as Pickering emulsion. 11−14 The particles can also be used as model system to study complex interaction of globular proteins, inorganic macromolecules such as polyoxometalates, and virus capside formation by mimicking anisotropic patchy interactions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Single and Multipatch Particles by Dip-Coating Method and Self-Assembly Thereof

et al. 2015

View full text Add to dashboard Cite

We report a simple strategy to produce single and multipatch particles via the conventional dip-coating process. In this method, a close-packed monolayer of micron-sized silica particles is first formed at air-polymer solution interface, followed by dip coating of particles on a glass substrate. The simultaneous deposition of both polymer and particles on the substrate gives rise to a thin polymer layer and a monolayer of silica particles. Sonication of the substrate leads to the formation of a polymeric patch on one side of the particles. The patch shape depends on the aging of the polymer film prior to sonication. With aging time the patch evolves from ring-like to disk-like. This technique allows easy control of patch width by varying the concentration of polymer in the solution. We further show that the number of patches on the particle can be increased by controlling the concentration of silica particles at the interface such that surface coverage is less than that required for the formation of a close-packed monolayer. The single and multipatch particles are characterized by scanning electron and optical microscopy for the patch size, shape, and number distribution. The as-synthesized particles are used as a model to study self-assembly of colloids with electrostatic repulsion and patchy hydrophobic attractions due to polymeric patches. We find the formation of doublets and finite-sized clusters due to patchy interactions. Dip coating can be automated to produce large quantities of patchy particles, which is one of the major limitations of other methods of producing patchy particles.

show abstract

Nonspherical ZnS colloidal building blocks for three-dimensional photonic crystals

Cited by 30 publications

References 14 publications

Transient simulations of the electrophoretic motion of a cylindrical particle through a 90° corner

Transient simulations of the electrophoretic motion of a cylindrical particle through a 90° corner

Chemical bath deposition synthesis of sub-micron ZnS-coated polystyrene

Synthesis of Single and Multipatch Particles by Dip-Coating Method and Self-Assembly Thereof

Contact Info

Product

Resources

About