David Kisailus, an assistant professor at the University of California, Burns School of Engineering, is creating a more cost-effective nanoscale material from the dental cassis that grows on the California coast to improve the efficiency of solar cells and lithium-ion batteries.
A recent research paper by David Kisailus, an assistant professor at the School of Chemical and Environmental Engineering, detailed the development of the teeth of Shixia. The paper was published in the magazine Advanced Functional Materials. The co-authors include his current and former students as well as scientists from Harvard University, Chapman University and the US Department of Energy's Brookhaven National Laboratory.
The focus of this paper is on rubber boots, which are the largest in the group of stone coffins, up to a foot long. They grow in the Pacific Ocean in central California and Alaska. This type of stone skin resembles leather, usually red-brown and occasionally orange. Based on this, people gave it a nickname: stray patties.
With the evolution of history, Ishigaki has gradually evolved to eat seaweed grown on the surface of a stone or inside through a professional sharp ** called “radulaâ€. This radula is a tooth (approximately 70-80 rows) that resembles a conveyor belt structure in Shizui's mouth. During the feeding process, the first row of teeth of the stone mortar used to grind the stone to touch the seaweed. When the row of teeth becomes damaged, new teeth grow. After the broken teeth "honored their devotion", the newly grown teeth entered the "war front" and continued to "fight" at the same speed.
Kisailus began studying Ishigaki five years ago because he was very interested in wear resistance and impact resistance materials. He uses natural inspiration to design the next generation of engineering products and materials. He had determined that the teeth of Shi Jie contained the hardest bio-minerals on Earth: magnetite (mainly composed of iron trioxide). It is this material that makes Shi Jie's teeth extremely strong and magnetic.
In the just-released paper titled "Phase Transformation and Structure Development in Stones and Teeth," Kisailus set out to investigate the firmness of the teeth and the magnetic field effect in the outer areas of the teeth.
His dissertation studied this through three steps. First, the paper studied the crystalline core of hydrous iron oxide (ferrihydrite) located on a fibrous chitin organic template. These nanocrystalline ferrihydrite particles are then converted to magnetic iron oxide (commonly known as magnetite) by solid phase transformation. Finally, the magnetite particles grow along the organic fibers and produce parallel bars in the mature teeth to make the teeth firm.
Kisailus said: "The whole process took place at room temperature and in an environmentally friendly environment. This is hard to believe. This makes it attractive to use similar strategies to produce nanomaterials in a cost-effective manner."
Kisailus took inspiration from this biomineralization route and tried to use it in solar cells and lithium-ion batteries in the laboratory. By controlling the crystal's size, shape, and orientation of the engineered nanomaterials, Kisailus believes he can build materials that make solar cells and lithium-ion batteries more efficient.
In other words, solar cells can capture a greater proportion of sunlight and convert it to electricity with greater efficiency, while lithium-ion batteries can spend less time charging.
Kisailus also said that there is another advantage to using the Ishigaki tooth pattern. Since engineered nanocrystals can grow at lower temperatures, manufacturing costs can be drastically reduced.
Although Kisailus focuses on solar cells and lithium-ion batteries, the same technology can be applied to many materials. For example, automotive and aircraft manufacturing materials and wear-resistant clothing. In addition, understanding the formation and nature of dental caries also helps to create better design parameters for oil and dental drills.
Note: The joint authors of David Kisailus published in Advanced Functional Materials magazine are: Qianqian Wang, Michiko Nemoto, Dongsheng Li, Garrett W. Milliron, Brian Weden, and Lesli R. Wood (The top five joint authors are U Riverside. Among students, James C. Weaver (Kisailus students, currently at Harvard), John Stegemeier, Christopher S. Kim (both at Chapman University) and Elaine DiMasi (at Brookhaven National Laboratory).
Uvc Bulb,T8 Uvc Bulb,T8 Uvc Tube,T8 Uvc Light
Changxing leboom lighting product CO.Ltd. , https://www.leboomuvd.com