Materials science underpinnings of micro and nanoplastics There is considerable interest in microplastics and nanoplastics (MNPL) due to their ubiquity and their potential for serious health consequences. A framework that allows us to consider all relevant a...

Microplastics and nanoplastics are being found in air, water, food sources as well as most organs in the human body. Here, in our pubs.rsc.org/en/content/a... article, we discuss what causes their generation, mitigation, and open questions in the field
@columbiauniversity.bsky.social

Particle Dispersion Controls the Gas-Separation Properties of Polymer-Grafted Nanoparticle Membranes Membranes based on polymer-grafted nanoparticles (PGNPs) have emerged as strong candidates for key gas separations due to their tunable permeability, selectivity, mechanical properties, and aging res...

Check out our new work titled "Particle Dispersion Controls the Gas-Separation Properties of Polymer-Grafted Nanoparticle Membranes" | ACS Macro Letters pubs.acs.org/doi/abs/10.1...

Graphene oxide-based membranes for water desalination and purification - npj 2D Materials and Applications npj 2D Materials and Applications - Graphene oxide-based membranes for water desalination and purification

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Soft-Shear-Aligned Vertically Oriented Lamellar Block Copolymers for Template-Free Sub-10 nm Patterning and Hybrid Nanostructures The template-free unidirectional alignment of lamellar block copolymers (l-BCPs) for sub-10 nm high-resolution patterning and hybrid multicomponent nanostructures is important for technological applications. We demonstrate a modified soft-shear-directed self-assembly (SDSA) approach for aligning pristine l-BCPs and l-BCPs with incorporated polymer-grafted nanoparticles (PGNPs), as well as the l-BCP conversion to aligned gold nanowires, and hybrid of metallic gold nanowire and dielectric silica nanoparticle in the form of line-dot nanostructures. The smallest patterns have a half-pitch as small as 9.8 nm. In all cases, soft-shear is achieved using a high-molecular-mass polymer topcoat layer, with support on a neutral bottom layer. We also show that the hybrid line-dot nanostructures have a red-shifted plasmonic response in comparison to neat gold nanowires. These template-free aligned BCPs and nanowires have potential use in nanopatterning applications, and the line-dot nanostructures should be useful in the sensing of biomolecules and other molecular species based on the plasmonic response of the nanowires.

Relevant papers on nanotechnology and sustainability include
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Ultrahigh Capacitive Energy Density in Stratified 2D Nanofiller-Based Polymer Dielectric Films Dielectric capacitors are critical components in electronics and energy storage devices. The polymer-based dielectric capacitors have the advantages of device flexibility, fast charge–discharge rates,...

Our other papers in this series include
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Anomalously High Dielectric Strength and Capacitive Energy Density of Thin Entangled Glassy Polymer Films The influence of high-intensity electric fields on the stability of polymeric materials is a problem of interest in the design of next-generation energy storage and electronic devices, and for underst...

See our new paper in @jacs-au.bsky.social on the capacitive energy density properties of thin polymer films and polymeric nanocapacitors, featured in the "
Polymers for Clean Energy Transition" issue @uh.edu
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