Freestanding Nanomembranes
Freestanding Nanomembranes - Related Videos
09:09
Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
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Cited by 3 •
2015
In this paper we describe the interfacial synthesis of conjugated microporous polymers (CMP) on sacrificial substrates, and the dissolution of the substrate for the preparation of freestanding CMP nanomembranes. In addition, we will describe how the fragile nanomembranes can be transferred to other substrates.
09:10
Multimodal Analysis of Microplastics in Drinking Water using a Silicon Nanomembrane Analysis Pipeline
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2025
Here, we present a protocol showcasing an optically transparent and flat substrate for the streamlined capture and analysis of contaminating particles in drinking water. Presented here is the Silicon Nanomembrane Analysis Pipeline (SNAP): a flexible pipeline for the capture, quantification, and identification of particles in liquid media.
07:32
Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
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Cited by 10 •
2017
This paper reports practical methods to prepare hydrogels in freestanding films and impregnated membranes and to characterize their physical properties, including water transport properties.
11:18
Generation of Comprehensive Thoracic Oncology Database - Tool for Translational Research
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Cited by 5 •
2011
A thoracic oncology database was developed to serve as a comprehensive repository for clinical and laboratory data for the purposes of translational research. The database will serve translational cancer researchers within the Thoracic Oncology Research Program. This database is adaptable to other cancer models, as well as other human diseases.
10:08
Fabrication of Large-area Free-standing Ultrathin Polymer Films
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Cited by 10 •
2015
We describe a method for the fabrication of large-area (up to 13 cm diameter) and ultrathin (as thin as 8 nm) polymer films. Instead of using a sacrificial interlayer to delaminate the film from its substrate, we use a self-limiting surface treatment suitable for arbitrarily large areas.
FAQs
The sacrificial substrate or interlayer provides temporary mechanical support during formation, then is selectively removed by chemical etching or dissolution. Because the functional layer remains after that support disappears, the release step converts a deposited film into a transferable membrane. The choice of support-removal route therefore directly affects whether the structure can be liberated for later placement.
Composition, porosity, and strain act as key design variables. Composition determines the material’s chemical functionality, while porosity changes the accessible internal surface and pathways available for nanoscale transport. Strain provides another way to tune behavior after release. Controlling these variables allows researchers to adjust membrane performance rather than treating thickness as the only important parameter.
Freestanding Nanomembranes offer a high surface-to-volume ratio because much of the material is exposed relative to its small thickness. In chemistry, that geometry can increase access to surfaces involved in sensing, catalysis, or separation. The result is a platform where limited material can still present substantial chemically relevant area, supporting responsive and material-efficient device designs.
A typical workflow begins by depositing a functional layer on a sacrificial substrate or interlayer. Researchers then selectively remove the supporting material through chemical etching or dissolution, liberating the layer. Finally, they transfer the membrane to a new environment. This sequence separates film formation from final placement and enables the functional structure to be studied or integrated after release.
Chemists can apply these membranes when a thin, accessible, and transferable material platform is useful. The main application areas include selective separation, catalysis, sensing, and electrochemical devices. In each case, composition, porosity, and strain can be selected or adjusted to influence chemical and physical behavior while retaining the advantages of nanoscale transport.
Within electrochemical devices, nanoscale transport and abundant accessible surfaces are especially relevant because they can improve responsiveness and material efficiency. Researchers can vary composition, porosity, and strain to examine how chemical and physical behavior changes in the device. This makes the membrane a tunable chemistry platform rather than a fixed passive layer.