Imaging by polystyrene latex particles

Hayashi, Sadao; Kumamoto, Yoshiaki; Suzuki, Takashi; Hirai, Toshihiro

doi:10.1016/0021-9797(91)90419-9

Cited by 111 publications

(69 citation statements)

References 8 publications

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“…However, the extent of arrangement of the domes, dots, and pores depends on the extent of arrangement of the colloidal beads. Procedures reported by Park and Xia [23] or Hayashi et al [24] can be adopted to produce a large arrangement of colloidal beads and, thus, a large arrangement of domes, dots, or a metallic pore structure. To our knowledge, no other method is currently available for producing various types of structurally organized layers by a simple and single route.…”

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confidence: 99%

Single Route for Producing Organized Metallic Domes, Dots, and Pores by Colloidal Templating and Over-Sputtering

Mikrajuddin

Iskandar

Okuyama³

2002

Adv. Mater.

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Ordered arrays of metallic domes, dots, and pores can be produced by exploiting a combination of colloidal templating and “over sputtering”. This elegant method involves deposition of metal onto a layer of polystyrene latex beads. The beads are then removed by heating to leave dome‐shaped metal “shells” (see Figure). Upon further heating the domes can be converted to metallic dots. Pores are obtained if colloidal multilayers are used.

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mentioning

confidence: 99%

Single Route for Producing Organized Metallic Domes, Dots, and Pores by Colloidal Templating and Over-Sputtering

Mikrajuddin

Iskandar

Okuyama³

2002

Adv. Mater.

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“…[1][2][3][4] The ability to assemble these colloidal particles into crystalline arrays allows one to obtain interesting and useful functionalities not only from the application of constituent materials but also from the fundamental physics of systems with the long-range, mesoscopic order that characterizes periodic structures. 5 For example, two-dimensional hexagonal lattices of colloidal spheres have been successfully demonstrated as ordered arrays of optical microlenses in image processing 6 ; as physical masks for evaporation or reactive ion etching to fabricate regular arrays of micro-or nanostructures; and as patterned arrays of relief structures to cast elastomeric stamps for use in soft lithographic techniques. 7 On the other hand, three-dimensional opaline lattices of colloidal spheres have recently been exploited as removable templates to generate highly ordered, macroporous materials 8 ; as diffractive elements to fabricate sensors, 9 filters, 10 photonic crystals, 11 or other types of optical and electrooptical devices 12 ; and as a directly observable (in three-dimensional real space) model system to study a wide variety of fundamental phenomena such as crystallization, phase transition, melting, and fracture mechanics.…”

Section: Introductionmentioning

confidence: 99%

Study of monodispersed polystyrene colloidal particles containing fluorine

Liu

2008

J of Applied Polymer Sci

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Monodispersed polystyrene colloidal particles containing fluorine were synthesized by two-stage semicontinuous emulsion polymerization in the presence of trifluoroethyl methacrylate (F 3 MA) as a functional comonomer. And then the colloidal crystal films were fabricated quickly from aqueous colloidal solutions by the vertical deposition method at certain temperature and humidity. The chemical components and thermal property of colloidal particles were determined by Fouriertransform infrared spectrometry and differential scanning calorimetry, respectively. The size and morphology of the particles were characterized by scanning electron microscopy (SEM). The surface element distribution of colloidal crystal films was measured by X-ray photoelectron spectroscopy (XPS). The optical property and water contact angles of the colloidal crystal films were investigated. When the concentration of F 3 MA relative to the total content of monomers was 2.5%, the size and the coefficient of variation (C v ) of colloidal particles were 211 nm and 4.2%, respectively. The colloidal crystal film exhibited high water-contact angles (121.38). The surface analysis by using XPS revealed that the fluorinated components preferentially enriched at the colloidal crystal film surface.

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“…A variety of methods, which can be divided into moldless or mold-assisted techniques, have been reported for fabricating microlenses and microlens arrays. Concerning moldless techniques, grayscale photolithography [1], thermal reflow [2], laser micromachining [3][4][5], inkjet printing [6], microcontact printing [7], and self-assembly [8,9] have been proposed to fabricate various polymeric, glass, silicon, and ceramic microlens arrays. However, many of these methods require sophisticated machinery, such as photo-or electron-beam lithography systems and lasers, thus, greatly limiting the high-throughput and low-cost aspects of the production of such microlenses.…”

Section: Introductionmentioning

confidence: 99%

Biconvex Polymer Microlenses with Tunable Imaging Properties Designed by Janus Droplet Microfluidics

2015

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This work presents a technique for fabricating biconvex polymer microlenses using microfluidics, and then evaluates their tunable optical properties. A glass microfluidic channel was employed to rapidly mass-produce nanoliter-sized biphasic Janus droplets, which consist of a biconvex segment of a photocurable monomer and a concave-convex segment of a non-curable silicone oil that contained a surfactant. Subsequent photopolymerization produces polymeric biconvex spherical microlenses with templated dual curvatures. By changing the flow-rate ratios of the photocurable and non-curable droplet phases in the microfluidic channel, the radii of curvature of the two lens surfaces and the thicknesses of the resultant microlenses can be varied. The resulting biconvex microlenses with different shapes were used in image projection experiments. Different magnification properties were observed, and were consistent with the properties estimated quantitatively from the geometrical parameters of the lenses.

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Imaging by polystyrene latex particles

Cited by 111 publications

References 8 publications

Single Route for Producing Organized Metallic Domes, Dots, and Pores by Colloidal Templating and Over-Sputtering

Single Route for Producing Organized Metallic Domes, Dots, and Pores by Colloidal Templating and Over-Sputtering

Study of monodispersed polystyrene colloidal particles containing fluorine

Biconvex Polymer Microlenses with Tunable Imaging Properties Designed by Janus Droplet Microfluidics

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