Improvised Technique for Graphene Filters to See Light


Published Date : Nov 28, 2018

Graphene is a sheet of carbon with a thickness of a single atom size, and scientists have first isolated the material in 2004. Since then, researchers have been trying to utilize the material as a nano-meter sized, porous channel.

Analysts at the National Institute of Standards and Technology (NIST) have finally been able to achieve the same. They have created graphene sheets that can be designed to contain pores, which can then be used as a tunable channel or strainer for particles in a fluid. The researchers say that they can put nanometer-sized holes across the entire graphene sheet by using particle plasma bombarding and using single-step plasma etching.

Scalable Porous Particle Structures Used

Scalable porous particle structuring is principally a concept which may likewise be implemented with other film materials. These could be nano-scale mechanical sensors, such as water cleansing and sifters, or siphons for organic blends.

The structures are not just more porous than their previous versions, but the current iteration is also scalable to industry standards. Scalability was considered a challenge until now.  The films may be further utilized to filter microscopic organisms and infections in potable water, biomedical filtration applications, wearable devices, and breathable materials.

HeiQ Materials AG to Work with Ongoing Research

The Swiss Government has funded the research, and the scientists are presently working with a Swiss venture, HeiQ Materials AG to create a breathable fabric. The material repulses fluids while being penetrable to gases.

Researchers are currently working on the process of studying different filtering applications of the materials. They also want to improvise the technique of fluid transportation through these porous membranes.