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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 ,

A Better Tool for the Job: Laser-based Technique to Elucidate the Mysteries of Exosomes


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Exosomes are small vesicles released by cells, which contain proteins and genetic materials. They are thought to be involved in various life activities, but current techniques to observe them are expensive and time-consuming. In a recent study, a team of undergraduate students from DGIST, Korea, proved the convenience and effectiveness of laser-based technique in identifying exosomes using exosomes from a less studied cancer type, paving the way for future exosome research.
Despite our great progress in understanding various cellular mechanisms over the last decades, many of them remain unclear. Such is the case for exosomes, small vesicles released by cells that contain genetic materials called “RNA” and various proteins. The roles of exosomes are believed to be very varied and important, both for normal bodily functions and also in the spreading of diseases like cancer. However, exosomes are so small that studying them is challenging and calls for costly ....

South Korea , Republic Of Korea , Dongwoo Lee , Yoojin Ahn , Yujin Choi , Seong Lyu , Jinyoung Kim , Gayeon Jin , Seong Soo Kim , Eunseok Kang , Jiwon Hwang , Group Research Program , Department Of New Biology , Daegu Gyeongbuk Institute Of Science , School Of Undergraduate , College Of Transdisciplinary , Daegu Gyeongbuk Institute , Prof Jung Ah Cho , Prof Cho , Dynamic Light Scattering , Transdisciplinary Studies , Undergraduate Studies , New Biology , Graduate School , Gyeongbuk Institute , Korean Government ,