The latest research by Eunsoon OH and Daegwon NOH of ChungnaM National University explored a new method to detect explosives in the gas environment in the gas environment with light glow and quenching (PLQ). Due to the increasing attention to military security and civilian security, accurate and reliable explosive detection methods are crucial, especially those who can detect non -metal land and mines containing triazol benzene benzozylene (DNT) people. The study was published in a polymer, researching how environmental factors such as temperature and humidity affect the PLQ sensor, and provide insights for improving the effectiveness of its effectiveness in reality.
The team of Professor OH focuses on the use of a convergent polymer (CP) film. This technology can detect the explosives by measuring changes in photogenic glow. At that time, it was exposed to DNT (such as DNT) target molecules. These molecules are usually found in explosives that it dissolves the optical glow of the polymer, which reduces its strength. Professor OH explained: “Our purpose is to analyze the environmental impact on the oscillating and hamstring of optical glowing under almost open conditions, especially how temperature and humidity affect the PLQ sensor.” Their discovery shows that some CP films, such as five containing five containing five films, contain five containing five. The co -pyramid polymer (PCC) of benzene is particularly effective for real -time applications.
The study uses remote control experiments to minimize the situation that exposed to harmful vapor, which enables researchers to test the PLQ method under nearly open conditions. Their method includes an automatic shutter system that controls the sensor exposed to explosive vapor and simulates conditions in real life. In these cases, these sensors need to be operated without limited to the controlled environment. This method enables the team to evaluate environmental impacts without direct exposure to steam molecules.
One of the most important findings in Professor OH is aware that environmental conditions such as rapid changes in temperature and humidity may have a significant impact on the reliability of the PLQ sensor. The observation results highlight the need to compensate temperature changes to ensure low -positive rates. Professor OH’s team proposes to minimize these errors, such as maintaining a stable temperature around the sensor, although in the real world, this may be challenging.
Researchers have developed a theoretical model to quantitative interpretation of photosynthesis and light emitting changes after explosive molecules. This model takes into account factors such as the diffusion and molecular adsorption dynamics. They also found that at a short exposure time, the polymerization film can restore its optical glow, which proves the potential of continuous real -time monitoring. However, long -term exposure to explosive vapor or high vapor pressure leads to significant degradation of polymer film. OH added: “The degradation of the aggregate film is a main limit, especially when dealing with high concentration of vapor.” Professor OH added that emphasizing that the use of durable materials can withstand the importance of extending use without losing performance.
In short, this study marks an important step for the reliability of the use of light -to -light and quenching to improve the reliability of explosive detection. By solving environmental factors that may damage the accuracy of sensors, the study provides valuable guidelines to enhance the robustness of the PLQ sensor in various applications. As Professor OH pointed out, “this work paved the way for the more effective and elastic explosive detection system for development, and it can play a reliable role even under the challenging environmental conditions.” Future research will focus on optimization than optimization These sensors are used for long -term use and further improve the compensation algorithm to explain environmental changes.
Journal reference
NOH, D. And oh, e. (2024). “Use the light -to -light quenching method to estimate the environmental effect and response time of the gas explosive detection.” Polymer, 16 (908). Doi: https: //doi.org/10.3390/polym16070908
About the author
Eunsoon It is a professor of Physics at ChungnaM National University on the South Korean Avenue. Before the CNU post, she served as a main researcher at the Samsung Senior Research Institute and led the efforts to develop blue -green LED technology with GAN. During the 2010-2011, she spent a while at the University of California Davis (UC Davis) for a period of time as a visiting scholar. She publishes more than 100 papers about light -to -light glow, Raman, magnetized diode, photovoltaic characteristics, scanning light current microscope, infrared detection, etc. in various scientific publications. She is currently using SERS and luminous quenching methods for explosive testing. She received a doctorate at Purdue University.
Daegwon NOH He is a student of Physics at the National University of ChungnaM, a doctorate degree. His research interest includes explosive vapor detection using optical glowing and SERS methods.
