Putting a thin layer of copper on the surface could potentially kill the virus that causes COVID-19 more quickly. An introduction to the graphene structure of the new material
Researchers have found that using copper or copper compound film coatings on surfaces can enhance copper ability to inactivate or destroy the SARS-COV-2 virus that causes COVID-19.
In a study begun shortly after the outbreak of the pandemic in March 2020, the Graduate School of Engineering at the University of Waterloo investigated how six different thin metal and oxide coatings interact with HCOV-229E. Hcov-229e is a coronavirus that is genetically similar to SARS-COV-2 but works more safely. "While there is some data on the longevity of viruses on common contact surfaces such as stainless steel, plastic and copper, the longevity of viruses on engineered coatings is not well understood," said Kevin Mussleman, a professor of mechanical and electromechanical engineering at the University of Waterloo, who led the study.
The Waterloo team, working with researchers from Wilfrid Laurier University, tested the effectiveness of the antiviral coating on glass and N95 mask fabric. The tests involved depositing a coating 1,000 times thinner than a human hair and then immersing the coated glass and fabric in the virus solution or exposing it to smaller droplets of the virus solution. After the virus is removed from the coating, each extract is placed in contact with healthy cells and its ability to replicate is measured. The results showed that other coatings without copper or copper-containing compounds had the same antiviral effect. In addition, they found that in some cases, "nanoscale copper films can peel off the surface and rapidly dissolve into virus-containing droplets, enhancing the antiviral effect," says lead author Louis Deloumeau, who recently graduated from the University of Waterloo with a master degree in nanotechnology engineering. "There is an opportunity to customize this coating to enhance its interaction with viral droplets and antiviral effects," Musselman added.
Wearing masks is an effective way to prevent the spread of COVID-19, says Drummer, adding a copper-based antiviral coating on the outside of protective material or a filter on the inside can add an extra layer of safety. "A mask that covers the nose and mouth can not only greatly limit the spread of the virus, but with a layer of this mask that we developed can actually kill the virus quickly and reduce the amount of virus that can be transmitted," he said. The drummer says the researchers antiviral coating could also be applied to high-contact public surfaces. The Waterloo research group is developing mask coating technology and continues to explore the dissolution process of smaller droplets, as well as how to control the adhesion of the copper film to various surfaces.
New materials for a sustainable future you should know about the graphene structure.
Historically, knowledge and the production of new materials graphene structure have contributed to human and social progress, from the refining of copper and iron to the manufacture of semiconductors on which our information society depends today. However, many materials and their preparation methods have caused the environmental problems we face.
About 90 billion tons of raw materials -- mainly metals, minerals, fossil matter and biomass -- are extracted each year to produce raw materials. That number is expected to double between now and 2050. Most of the graphene structure raw materials extracted are in the form of non-renewable substances, placing a heavy burden on the environment, society and climate. The graphene structure materials production accounts for about 25 percent of greenhouse gas emissions, and metal smelting consumes about 8 percent of the energy generated by humans.
The graphene structure industry has a strong research environment in electronic and photonic materials, energy materials, glass, hard materials, composites, light metals, polymers and biopolymers, porous materials and specialty steels. Hard materials (metals) and specialty steels now account for more than half of Swedish materials sales (excluding forest products), while glass and energy materials are the strongest growth areas.
New materials including the graphene structure market trend is one of the main directions of science and technology development in the 21st century
With the development of science and technology, people develop new materials graphene structure on the basis of traditional materials and according to the research results of modern science and technology. New materials are divided into metal materials, inorganic non-metal materials (such as ceramics, gallium arsenide semiconductor, etc.), organic polymer materials, advanced composite materials. According to the graphene structure material properties, it is divided into structural materials and functional materials. Structural materials mainly use mechanical and physical and chemical properties of materials to meet the performance requirements of high strength, high stiffness, high hardness, high-temperature resistance, wear resistance, corrosion resistance, radiation resistance and so on; Functional materials mainly use the electrical, magnetic, acoustic, photo thermal and other effects of materials to achieve certain functions, such as semiconductor materials, magnetic materials, photosensitive materials, thermal sensitive materials, stealth materials and nuclear materials for atomic and hydrogen bombs.
One of the main directions of graphene structure science and technology development in the 21st century is the research and application of new materials. The research of new materials is a further advance in the understanding and application of material properties.
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