Japanese scientists have developed a technique to transform a copper-based substance into a material that mimics properties of precious and pricey metals, such as gold and silver.
The new medium, made of copper nanoparticles (very small copper-based structures) has promising applications in the production of electronic devices that would otherwise depend on expensive gold and silver counterparts. It is also suitable in the fabrication of electronic components using printing technologies that are recognized as environmentally friendly production methods.
The study was published on January 29 in Scientific Reports, an online open access journal managed by Nature.
The development of the Internet of Things (IoT) has quickly increased the demand for thin and wearable electronic devices. For example, IoT depends on communication between devices, which requires antennas that have so far required expensive gold and silver-based metal composites.
To date, existing techniques for the preparation of copper nanoparticles have not been ideal as they resulted in impurities attaching to the material. Since these impurities could only be removed via extremely high temperatures, copper nanoparticles that were created at room temperature were impure and thus could not solidify into usable parts. Until now, this has been one of the hurdles to creating a more cost-effective alternative to gold and silver parts in electronic devices.
The joint study between researchers at Tohoku University and Mitsui Mining & Smelting Co., Ltd in Tokyo reports the successful synthesis of copper nanoparticles with the ability of solidifying at much lower temperatures while remaining pure. The team has altered the structure of the copper nanoparticles and rendered them more stable so that they do not degrade at low temperatures.
“Copper has been an attractive alternative material in the preparation of electric circuits. The most important part of using copper is altering it so that it solidifies at low temperatures. So far, that has been difficult because copper readily interacts with the moisture in the air and degrades, which turns into unstable nanoparticles. With the methods used in this study that alter the structure of the carbon and thereby making it more stable, we have successfully overcome this instability issue,” adds Kiyoshi Kanie, Ph.D., associate professor at the Institute of Multidisciplinary Research for Advanced Materials of Tohoku University.
The researchers hope to expand the application of their copper-based nanoparticles beyond just electronics. They believe that this material will be useful in other sectors as well. “Our method effectively created copper nanoparticle-based materials that can be utilized in various types of on-demand flexible and wearable devices that can be fabricated easily via printing processes at a very low cost,” Kanie adds.
The Latest on: Copper nanoparticles
via Google News
The Latest on: Copper nanoparticles
- Chile’s Mining Minister promotes use of copper to fight covid-19on May 10, 2020 at 8:04 am
The Minister ordered for his office to be sprayed with a product containing copper nanoparticles, which prevents certain surfaces from becoming hosts for pathogens.
- BGU Scientists Develop Anti-Viral Coating To Block Coronavirus On Surfaceson May 7, 2020 at 2:39 am
The long-lasting surface coatings contain nanoparticles of safe metal ions and polymers with anti-viral and anti-microbial activity.
- Anti-Coronavirus Surface Coating Could Be Effective for Monthson May 6, 2020 at 7:57 am
Gurion University in Israel have embedded metal nanoparticles in a polymer that can be painted or sprayed on surfaces such as doorknobs. The slow release of ions with strong anti-viral properties ...
- Israeli scientists develop anti-viral surface coatingson May 5, 2020 at 2:57 am
The anti-viral surface coatings development project is being led by Prof. Angel Porgador, from the Department of Microbiology, Immunology and Genetics at Ben-Gurion University (BGU) and the National ...
- Scientists hope their nanomaterial surface coatings will help battle COVID-19on May 5, 2020 at 2:51 am
Gurion University researchers say paintable and sprayable material is made of metal ions and polymer nanoparticles that are strongly antiviral and antibacterial ...
- Scientists at Ben-Gurion University of the Negev Develop Anti-Coronavirus Surface Coating Based on Nanomaterialson May 5, 2020 at 12:17 am
The coronavirus, SARS-CoV-2, which is responsible for the current COVID-19 pandemic, is transmitted between people mainly via respiratory droplets, but it is known that the virus remains stable on ...
- High-Performance Inductor on a Chip: More than a Metallic Spiralon April 30, 2020 at 2:46 pm
By chemically forming multilayered, microscopic copper tubes on a sapphire substrate, then using capillary action to fill them with iron nanoparticles, a research team was able to fabricate ...
- New copper alloy without toxic componentson April 30, 2020 at 3:12 am
Phys.org internet news portal provides the latest news on science including: Physics, Space Science, Earth Science, Health and Medicine ...
via Bing News