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Nanotechnology Now - Press Release: Wearable sensors that detect gas leaks


Nanotechnology Now
Gas sensor
CREDIT
POSTECH
Abstract:
Gas accidents such as toxic gas leakage in factories, carbon monoxide leakage of boilers, or toxic gas suffocation during manhole cleaning continue to claim lives and cause injuries. Developing a sensor that can quickly detect toxic gases or biochemicals is still an important issue in public health, environmental monitoring, and military sectors. Recently, a research team at POSTECH has developed an inexpensive, ultra-compact wearable hologram sensor that immediately notifies the user of volatile gas detection.
Wearable sensors that detect gas leaks
Pohang, South Korea | Posted on April 19th, 2021
A joint research team led by Professor Junsuk Rho of departments of mechanical and chemical engineering and Dr. Inki Kim of Department of Mechanical Engineering with Professor Young-Ki Kim and Ph.D. candidate Won-Sik Kim of Department of Chemical Engineering at POSTECH has integrated metasurface wit ....

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Wearable sensors that detect gas leaks


Credit: POSTECH
Gas accidents such as toxic gas leakage in factories, carbon monoxide leakage of boilers, or toxic gas suffocation during manhole cleaning continue to claim lives and cause injuries. Developing a sensor that can quickly detect toxic gases or biochemicals is still an important issue in public health, environmental monitoring, and military sectors. Recently, a research team at POSTECH has developed an inexpensive, ultra-compact wearable hologram sensor that immediately notifies the user of volatile gas detection.
A joint research team led by Professor Junsuk Rho of departments of mechanical and chemical engineering and Dr. Inki Kim of Department of Mechanical Engineering with Professor Young-Ki Kim and Ph.D. candidate Won-Sik Kim of Department of Chemical Engineering at POSTECH has integrated metasurface with gas-reactive liquid crystal optical modulator to develop a sensor that provides an immediate visual holographic alarm when harmful gases are detected. T ....

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Silencing vibrations in the ground and sounds underwater


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Metamaterials that can control the refractive direction of light or absorb it to enable invisible cloaks are gaining attention. Recently, a research team at POSTECH has designed a metasurface that can control the acoustic or elastic waves. It is gaining attention as it can be used to escape from threatening earthquakes or build submarines untraceable to SONAR.
Professor Junsuk Rho of POSTECH s departments of mechanical engineering and chemical engineering and Ph.D. candidate Dongwoo Lee of the Department of Mechanical Engineering in collaboration with Professor Jensen Li of HKUST have designed an artificial structure that can control not only the domain of underwater sound but also of vibration. The research team has presented an underwater stealth metasurface independent from SONAR by controlling the acoustic resonance to absorb the wave. They also confirmed that the wave propagation through a curved plate, such as vibrations, can be drastically altered; and have ....

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POSTECH: Silencing Vibrations in the Ground and Sounds Underwater


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Metamaterials that can control the refractive direction of light or absorb it to enable invisible cloaks are gaining attention. Recently, a research team at POSTECH has designed a metasurface that can control the acoustic or elastic waves. It is gaining attention as it can be used to escape from threatening earthquakes or build submarines untraceable to SONAR.
Professor Junsuk Rho of POSTECH’s departments of mechanical engineering and chemical engineering and Ph.D. candidate Dongwoo Lee of the Department of Mechanical Engineering in collaboration with Professor Jensen Li of HKUST have designed an artificial structure that can control not only the domain of underwater sound but also of vibration. The research team has presented an underwater stealth metasurface independent from SONAR by controlling the acoustic resonance to absorb the wave. They also confirmed that the wave propagation through a curved plate, such as vibrations, can be drastically altered; and have ....

South Korea , Jensen Li , Dongwoo Lee , Albert Einstein , Junsuk Rho , Researcher Program , Regional Leading Research Center , Korean Ministry Of Education , Global Frontier Program , Department Of Mechanical Engineering , Korea Hydro Nuclear Power Co Ltd , National Research Foundation Of Korea , Mechanical Engineering , Applied Physics , Physical Review Applied , Professor Junsuk Rho , Korea Hydro , Mid Career Researcher Program , National Research Foundation , Korean Ministry , தெற்கு கொரியா , ஜென்சன் லி , டாங்வூ லீ , ஆல்பர்ட் ஐன்ஸ்டீன் , ஆராய்ச்சியாளர் ப்ரோக்ர்யாம் , பிராந்திய முன்னணி ஆராய்ச்சி மையம் ,