Selective Assembly of Sub‐Micrometer Polymer Particles

Kuemin, Cyrill; Huckstadt, K. Cathrein; Lörtscher, Emanuel; Rey, Antje; Decker, Andrea; Spencer, Nicholas D.; Wolf, Heiko

doi:10.1002/adma.201000396

Cited by 17 publications

(25 citation statements)

References 24 publications

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“…However, moving to a lithographically patterned substrate can lead to much more efficient self‐assembly 183–185. Such technique utilizes capillary forces at the edge of drying droplet185 or at an evaporative boundary of a confined solution183, 184 as has been demonstrated in other nanoparticle systems 186–189. The template is patterned to contain assembly sites into which nanorods can fit, which is achieved by thermal scanning‐probe lithography185 or by electron‐beam lithography 183, 184.…”

Section: Gold Nanorod Assemblymentioning

confidence: 99%

“…Under these conditions nanorods do not deposit in the un‐patterned areas 185. However, this approach leads to varying geometry at the triple interface and varying rod concentration, which are extremely important for high‐yield assembly 188. A more tightly‐controlled system traps the water droplet between the template surface and a slide which can be moved to alter the position of the three‐phase contact line, as in Figure 12b 183, 184.…”

Section: Gold Nanorod Assemblymentioning

confidence: 99%

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Functional Gold Nanorods: Synthesis, Self‐Assembly, and Sensing Applications

2012

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Gold nanorods have received much attention due to their unique optical and electronic properties which are dependent on their shape, size, and aspect ratio. This article covers in detail the synthesis, functionalization, selfassembly, and sensing applications of gold nanorods. The synthesis of three major types of rods is discussed: single-crystalline and pentahedrally-twinned rods, which are synthesized by wet chemistry methods, and polycrystalline rods, which are synthesized by templated deposition. Functionalization of these rods is usually necessary for their applications, but can often be problematic due to their surfactant coating. Thus, general strategies are provided for the covalent and noncovalent functionalization of gold nanorods. The review will then examine the signifi cant progress that has been made in controllable assembly of nanorods into various arrangements. This assembly can have a large effect on measurable properties of rods, making it particularly applicable towards sensing of a variety of analytes. Other types of sensing not dependent on nanorod assembly, such as refractive-index based sensing, are also discussed.Adv.

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Section: Gold Nanorod Assemblymentioning

confidence: 99%

Section: Gold Nanorod Assemblymentioning

confidence: 99%

Functional Gold Nanorods: Synthesis, Self‐Assembly, and Sensing Applications

2012

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“…In our review, we focused deliberately on supraparticles in the size range of hundreds of µm or even mm. Of course, colloidal assembly is not limited to this size range, and a much work has also been done on the assembly of nanoparticles, including their structured assemblies at surfaces [6,131,132,133,134]. However, in this review, we explicitly refrained from covering such investigations.…”

Section: Discussionmentioning

confidence: 99%

Droplets, Evaporation and a Superhydrophobic Surface: Simple Tools for Guiding Colloidal Particles into Complex Materials

Sperling

Gradzielski

2017

Gels

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Abstract:The formation of complexly structured and shaped supraparticles can be achieved by evaporation-induced self-assembly (EISA) starting from colloidal dispersions deposited on a solid surface; often a superhydrophobic one. This versatile and interesting approach allows for generating rather complex particles with corresponding functionality in a simple and scalable fashion. The versatility is based on the aspect that basically one can employ an endless number of combinations of components in the colloidal starting solution. In addition, the structure and properties of the prepared supraparticles may be modified by appropriately controlling the evaporation process, e.g., by external parameters. In this review, we focus on controlling the shape and internal structure of such supraparticles, as well as imparted functionalities, which for instance could be catalytic, optical or electronic properties. The catalytic properties can also result in self-propelling (supra-)particles. Quite a number of experimental investigations have been performed in this field, which are compared in this review and systematically explained.

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“…To promote the particle-substrate interaction strength, various mechanisms have been studied, including electrostatic interactions, [10] magnetic forces [11] and geometrical constraint. [12] And different nanofabrication techniques, such as photolithography, [13][14] electron beam, [15][16] nanoimprint, [17][18] and probe-based lithography [19][20] have also been applied to prepare template. However, most of these methods are only effective for particles larger than 50 nm, and there is only limited success for smaller nanoparticles.…”

mentioning

confidence: 99%

Deterministic Assembly of Single Sub‐20 nm Functional Nanoparticles Using a Thermally Modified Template with a Scanning Nanoprobe

et al. 2020

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Figure 5. Heterogeneous integration of QDs and AgNW using the TMTAA method. a) Schematic drawings of the fabrication steps of a QDs-AgNW integrated structure. b1) Optical microscopic photograph of the AgNW. b2) Topography image of the AgNW located by the scanning probe. b3) Topography of the same AgNW with additional nanotraps. b4) Fluorescent images of the QDs-AgNW structure illuminated by 532 nm laser.

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Selective Assembly of Sub‐Micrometer Polymer Particles

Cited by 17 publications

References 24 publications

Functional Gold Nanorods: Synthesis, Self‐Assembly, and Sensing Applications

Functional Gold Nanorods: Synthesis, Self‐Assembly, and Sensing Applications

Droplets, Evaporation and a Superhydrophobic Surface: Simple Tools for Guiding Colloidal Particles into Complex Materials

Deterministic Assembly of Single Sub‐20 nm Functional Nanoparticles Using a Thermally Modified Template with a Scanning Nanoprobe

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