There is a beetle that can live in the hottest place on the planet and can adjust its body temperature. Inspired by this, the researchers have developed an environmentally friendly method that can be used to cool everything from buildings to electronic devices.
(Source: University of Texas at Austin)
According to foreign media reports, researchers from the University of Texas at Austin’s Cocklerel School of Engineering collaborated with Shanghai Jiaotong University in China and the KTH Royal Institute of Technology in Sweden. There is a beetle beetle that can cool its body to survive in volcanic areas in Southeast Asia. Based on the information obtained, the researchers used a common flexible material with high mechanical strength and mass production, based on the beetle's wing structure, to create a photonic film. The film can be passively cooled, which means it is different from systems that require energy to cool cars and buildings.
The researchers said: "The film can be used for all objects that need to be cooled. Deicing, air conditioning and other cooling methods require a lot of energy, but the film itself can be cooled and cooled." The team also found that the film can be The temperature of objects exposed to direct sunlight drops by 5.1 degrees Celsius.
This film can be used as a coating on the surface of objects and has a wide range of uses. It can be installed on windows of offices and apartment buildings to reflect sunlight and reduce energy consumption costs; it can also protect solar panels from continuous sunlight. Degradation; even used to wrap cars to keep parked cars cool; can also become a key component of new cooling fabrics, wearable devices, and personal electronics.
The US Energy Information Administration predicts that by 2050, air-conditioning consumption will increase significantly, with air-conditioning consumption in the residential sector increasing by 59% and commercial sectors by 17%. As the need for cooling has increased, so has the demand for new cooling solutions that do not consume large amounts of energy or put pressure on the environment.
Previously, people have known that this beetle has the ability to cool down, but what makes it efficiently regulate its own temperature is still a mystery. The research team found that the triangular "villi" on the beetle's wings played an important role, helping to release the body's heat while reflecting sunlight.
The beetle is also known as the long-horned beetle because its antennae are very long, sometimes even three times the length of other parts of the body. Currently, there are more than 26,000 species of beetles in the world.
The study focused on a specific type of beetle, Neocerambyx Gigas (Coleoptera), which can survive in the hot climate near active volcanoes in Thailand and Indonesia, and the maximum summer temperature in such areas can reach 40 degrees Celsius and the surface temperature can reach as high as 70 degrees Celsius. When the weather gets hot, the beetle will stay still, stop foraging, and avoid absorbing excess heat from exercise.
(Source: University of Texas at Austin)
The film made by the team is made of a flexible and widely used polymer PDMS and some high-throughput ceramic particles. Because the materials used are very common, and the process of making the film is also very simple, that is, the micro-stamping method, the researchers believe that the project will succeed, and other studies that try to replicate the biological effects have failed.
In the future, the research team will further optimize the manufacturing process for mass production of such films. They are also seeking to commercialize such films in several areas such as energy-efficient buildings, water cooling systems, thermal fabrics, desert dew collection devices, and auxiliary cooling systems in power plants. (Yu Qiuyun)
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