Sintered Silica Colloidal Crystals with Fully Hydroxylated Surfaces

Le, Thai Van; Ross, Eric E.; Velarde, Tomika R. C.; Legg, Michael A.; Wirth, Mary J.

doi:10.1021/la700929e

Cited by 33 publications

(28 citation statements)

References 30 publications

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“…These methods are generic and hence not specific to the LB approach, but include approaches such as substrate templating,96 control of rate of evaporation,97 control of drying humidity,98 addition of fillers between the spheres etc 99–101. There have been numerous papers published on this topic 102–114…”

Section: Discussionmentioning

confidence: 99%

The Langmuir‐Blodgett Approach to Making Colloidal Photonic Crystals from Silica Spheres

Bardosova¹,

Pemble²,

Povey³

et al. 2010

Advanced Materials

167

118

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The area of colloidal photonic crystal research has attracted enormous attention in recent years as a result of the potential of such materials to provide the means of fabricating new or improved photonic devices. As an area where chemistry still predominates over engineering the field is still in its infancy in terms of finding real applications being limited by ease of fabrication, reproducibility and 'quality'- for example the extent to which ordered structures may be prepared over large areas. It is our contention that the Langmuir-Blodgett assembly method when applied to colloidal particles of silica and perhaps other materials, offers a way of overcoming these issues. To this end the assembly of silica and other particles into colloidal photonic crystals using the Langmuir-Blodgett (LB) method is described and some of the numerous papers on this topic, which have been published, are reviewed. It is shown that the layer-by-layer control of photonic crystal growth afforded by the LB method allows for the fabrication of a range of novel, layered photonic crystals that may not be easily assembled using any other approach. Some of the more interesting of these structures, including so-called heterostructured photonic crystals comprising of layers of spheres having different diameters are presented and their optical properties described. Finally, we offer our comments as to future applications of this interesting technology.

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Section: Discussionmentioning

confidence: 99%

The Langmuir‐Blodgett Approach to Making Colloidal Photonic Crystals from Silica Spheres

Bardosova¹,

Pemble²,

Povey³

et al. 2010

Advanced Materials

167

118

View full text Add to dashboard Cite

show abstract

“…The most common reinforcing method is sintering due to its simplicity. NCC sintering occurs by interparticle necking-induced bonding [8,11]. However, sintering requires the application of high temperatures for a long duration, resulting in large morphological changes, crack formation, and film delamination [8,11,12], which may jeopardize the NCCs' functionality [8,11,12] high-temperature sintering may preclude the use of NCCs on polymer substrates, which are commonly used for flexible electronics.…”

Section: Introductionmentioning

confidence: 99%

Reinforcing nanocolloidal crystals by tuning interparticle bonding via atomic layer deposition

Zhang

Lee

et al. 2015

Acta Materialia

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“…Finally, the beads were fixed within the microreactor after sintering at 1050 °C for 12 hours (Fig. 2a-6) 31,32 . The silica beads can maintain the spherical shape and start to melt only on the surface.…”

Section: Resultsmentioning

confidence: 99%

An oligonucleotide synthesizer based on a microreactor chip and an inkjet printer

Huang

Wei

et al. 2019

Sci Rep

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Synthetic oligonucleotides (oligos) are important tools in the fields of molecular biology and genetic engineering. For applications requiring a large number of oligos with high concentration, it is critical to perform high throughput oligo synthesis and achieve high yield of each oligo. This study reports a microreactor chip for oligo synthesis. By incorporating silica beads in the microreactors, the surface area of the solid substrate for oligo synthesis increases significantly in each microreactor. These beads are fixed in the microreactors to withstand the flushing step in oligo synthesis. Compared to conventional synthesis methods, this design is able to avoid protocols to hold the beads and integrate more microreactors on a chip. An inkjet printer is utilized to deliver chemical reagents in the microreactors. To evaluate the feasibility of oligo synthesis using this proof-of-concept synthesizer, an oligo with six nucleotide units is successfully synthesized.

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Sintered Silica Colloidal Crystals with Fully Hydroxylated Surfaces

Cited by 33 publications

References 30 publications

The Langmuir‐Blodgett Approach to Making Colloidal Photonic Crystals from Silica Spheres

The Langmuir‐Blodgett Approach to Making Colloidal Photonic Crystals from Silica Spheres

Reinforcing nanocolloidal crystals by tuning interparticle bonding via atomic layer deposition

An oligonucleotide synthesizer based on a microreactor chip and an inkjet printer

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