Photonic Microbeads Templated by Oil‐in‐Oil Emulsion Droplets for High Saturation of Structural Colors

Chitosan (CH)–carboxymethyl cellulose sodium salt (NaCMC) microcapsules containing paraffin oil were synthesized by complex formation, and crosslinked with glutaraldehyde (GTA). The electrostatic deposition of NaCMC onto the CH-coated paraffin oil emulsion droplets was demonstrated by zeta potential and optical microscopy. The optimal process conditions were identified in terms of pH of the aqueous solution (5.5) and CH/NaCMC mass ratio (1:1). Encapsulation of paraffin oil and microcapsule morphology were analyzed by ATR-FTIR and SEM, respectively. The effect of GTA crosslinking on paraffin oil latent heat was investigated by DSC and combined with the values of encapsulation efficiency and core content, supporting the compact shell formation.

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Mineralization of water-in-oil emulsion droplets

MRS Proceedings ◽

10.1557/proc-847-ee3.5 ◽

2004 ◽

Vol 847 ◽

Cited By ~ 1

Author(s):

Giulia Fornasieri ◽

Stéphane Badaire ◽

Rénal Vasco Backov ◽

Philippe Poulin ◽

Cécile Zakri ◽

...

Keyword(s):

Continuous Phase ◽

Water Soluble ◽

Oil Emulsion ◽

Emulsion Droplets ◽

Emulsion Systems ◽

Oil Water ◽

Silica Precursor ◽

Concentration Threshold ◽

Water In Oil Emulsion ◽

Soluble Surfactant

Using reverse emulsion systems, we were able to trigger mineralization confined at an oil-water interface. In this process, the alcoxide silica precursor is dissolved in the oil continuous phase of the emulsion and diffuses through the bulk to the interface where it starts to hydrolyze and condense as soon as a certain concentration threshold is attained. The process takes place only in the presence of a water soluble surfactant inside the droplet. This surfactant leads to the presence of a controlled mesoporosity inside the silica shells. The obtained objects could be used in different encapsulation applications.

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Method for Measuring the Volume of Nominally 100 μm Diameter Spherical Water-in-Oil Emulsion Droplets

10.6028/nist.sp.260-184 ◽

2016 ◽

Cited By ~ 14

Author(s):

John A. Dagata ◽

Natalia Farkas ◽

John A. Kramer

Keyword(s):

Oil Emulsion ◽

Emulsion Droplets ◽

Water In Oil Emulsion

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Spatial RNA proximities reveal a bipartite nuclear transcriptome and territories of differential density and transcription elongation rates

10.1101/196147 ◽

2017 ◽

Cited By ~ 1

Author(s):

Jörg Morf ◽

Steven W. Wingett ◽

Irene Farabella ◽

Jonathan Cairns ◽

Mayra Furlan-Magaril ◽

...

Keyword(s):

Rna Polymerase Ii ◽

Rna Seq ◽

Cell Nuclei ◽

Oil Emulsion ◽

Rna Molecules ◽

Emulsion Droplets ◽

Differential Density ◽

Genomic Regions ◽

Water In Oil Emulsion ◽

Nascent Transcripts

AbstractSpatial transcriptomics aims to understand how the ensemble of RNA molecules in tissues and cells is organized in 3D space. Here we introduce Proximity RNA-seq, which enriches for nascent transcripts, and identifies contact preferences for individual RNAs in cell nuclei. Proximity RNA-seq is based on massive-throughput RNA-barcoding of sub-nuclear particles in water-in-oil emulsion droplets, followed by sequencing. We show a bipartite organization of the nuclear transcriptome in which compartments of different RNA density correlate with transcript families, tissue specificity and extent of alternative splicing. Integration of proximity measurements at the DNA and NA level identify transcriptionally active genomic regions with increased nucleic acid density and faster RNA polymerase II elongation located close to compact chromatin.

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