E-Mail
IMAGE: A schematic diagram of a quadruple fusion imaging system developed by coaxially combining a laser and a transparent ultrasound transducer. 1) Ultrasound image, 2) Photoacoustic image, 3) Optical coherence tomography. view more
Credit: POSTECH
A quadruple fusion optical and ultrasound imaging system has been developed that allows diagnosis of eye conditions or tumors or to see the environment inside the body using a transparent ultrasound transducer.
Professor Chulhong Kim of POSTECH s Department of Electrical Engineering, Convergence IT Engineering, and Mechanical Engineering, Dr. Byullee Park of Department of Convergence IT Engineering, Ph.D. candidate Jeongwoo Park of School of Interdisciplinary Bioscience and Bioengineering, Professor Hyung Ham Kim of Department of Convergence IT Engineering, and Professor Unyong Jeong of Department of Materials Science and Engineering, in joint research with Professor Hong Kyun Kim of Kyungpook National University S
Loading video.
Credit: Raj Kumar Manna
PITTSBURGH (March 16, 2021) . During the swarming of birds or fish, each entity coordinates its location relative to the others, so that the swarm moves as one larger, coherent unit. Fireflies on the other hand coordinate their temporal behavior: within a group, they eventually all flash on and off at the same time and thus act as synchronized oscillators.
Few entities, however, coordinate both their spatial movements and inherent time clocks; the limited examples are termed swarmalators 1, which simultaneously swarm in space and oscillate in time. Japanese tree frogs are exemplar swarmalators: each frog changes both its location and rate of croaking relative to all the other frogs in a group.
E-Mail
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. view more
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 published in
E-Mail
IMAGE: Simultaneous multicontrast OR-PAM of hemoglobin concentration, oxygen saturation, blood flow speed, and lymphatic concentration; doi 10.1117/1.AP.3.1.016002 view more
Credit: Wang, et al.
Optical-resolution photoacoustic microscopy (OR-PAM), a new hybrid imaging technique, allows us to listen to the sound of light and see the color of biological tissue itself. It can be used for live, multicontrast functional imaging, but the limited wavelength choice of most commercial lasers and the limitations of the existing scanning methods have meant that OR-PAM can obtain only one or two different types of contrast in a single scan. These limitations have made multicontrast functional imaging time-consuming, and it s been difficult to capture the dynamic changes of functional information in biological tissues.