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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 ....

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 ,

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 ,

Injections or light irradiation?

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IMAGE: Light instead of injections: A new concept of drug delivery system that automatically releases medication from an in vivo medical device by simply shining light whenever the drug injection is.
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Credit: POSTECH
A new concept of on-demand drug delivery system has emerged in which the drugs are automatically released from in vivo medical devices simply by shining light on the skin.
A research team led by Professor Sei Kwang Hahn of the Department of Materials Science and Engineering and Professor Kilwon Cho of the Department of Chemical Engineering at POSTECH have together developed an on-demand drug delivery system (DDS) using an organic photovoltaic cell coated with upconversion nanoparticles. This newly developed DDS allows nanoparticles to convert skin-penetrating near-infrared (NIR) light into visible light so that drug release can be controlled in medical devices installed in the body. These research findings were publish ....

Kilwon Cho , Kwang Hahn , Global Frontier Program , Department Of Chemical Engineering , Department Of Materials Science , Engineering Research Center Program , Nano Energy On , Professor Sei Kwang Hahn , Materials Science , Professor Kilwon Cho , Chemical Engineering , Nano Energy , Professor Sei Kwang , Mid Career Researcher Program , Korean Ministry , Biomechanics Biophysics , Chemistry Physics Materials Sciences , Medicine Health , Pharmaceutical Science , Pharmaceutical Chemistry , குவாங் ஹான் , உலகளாவிய எல்லை ப்ரோக்ர்யாம் , துறை ஆஃப் இரசாயன பொறியியல் , துறை ஆஃப் பொருட்கள் அறிவியல் , பொறியியல் ஆராய்ச்சி மையம் ப்ரோக்ர்யாம் , நானோ ஆற்றல் ஆன் ,

Speeding up commercialization of electric vehicles

Speeding up commercialization of electric vehicles
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United States , South Korea , Byoungwoo Kang , Junghwa Lee , Researcher Program , American Chemistry Association , Energy Letters , Department Of Materials Science , Professor Byoungwoo Kang , Materials Science , American Chemistry , Co Free Li Rich , Mid Career Researcher Program , Radiation Technology Development Project , National Research Foundation , ஒன்றுபட்டது மாநிலங்களில் , தெற்கு கொரியா , ஆராய்ச்சியாளர் ப்ரோக்ர்யாம் , ஆற்றல் எழுத்துக்கள் , துறை ஆஃப் பொருட்கள் அறிவியல் , பொருட்கள் அறிவியல் , அமெரிக்கன் வேதியியல் , நடுவில் தொழில் ஆராய்ச்சியாளர் ப்ரோக்ர்யாம் , தேசிய ஆராய்ச்சி அடித்தளம் ,