Pohang University of Science and Technology · 工学
Professor Sangmin Jeon's research lab specializes in the design and application of advanced nanomaterials for environmental, biomedical, and energy-related technologies. Key research directions include the development of magnetic and plasmonic nanoclusters for highly sensitive biosensing of pathogens and tumor markers, such as *Salmonella* and alpha-fetoprotein (AFP), using innovative detection methods like lateral flow assays and dynamic light scattering. The lab also focuses on sustainable energy solutions, exemplified by the creation of 3D solar steam generators using bio-inspired carbonized natural sponges for efficient solar evaporation. Additionally, the lab investigates fundamental nanotribological phenomena, exploring how controlled surface vibrations can drastically reduce friction at the nanoscale through experimental and simulation-based approaches.
Figures are computed from collected data and may differ slightly.
A novel method was developed for the detection of <italic>Salmonella</italic> bacteria using gold-coated magnetic nanoparticle clusters (Au/MNCs) and lateral flow filters.
We developed a 3D solar steam generator with the highest evaporation rate reported so far using a carbonized luffa sponge (CLS). The luffa sponge consisted of entangled fibers with a hierarchically porous structure; macropores between fibers, micro-sized pores in the fiber-thickness direction, and microchannels in the fiber-length direction. This structure remained after carbonization and played an important role in water transport. When the CLS was placed in the water, the microchannels in the
A facile and sensitive immunoassay protocol for the detection of alpha-fetoprotein (AFP) was developed using gold-coated iron oxide magnetic nanoclusters and dynamic light scattering (DLS) methods. The increase in the average particle size due to AFP-mediated aggregation was measured using DLS, and the detection limit was better than 0.01 ng mL(-1).
We studied the effect of periodic normal (out-of-plane) surface vibrations on friction in an atomic force microscope experiment. Vibration frequency was varied in the range of 1–100kHz, and vibration amplitude was varied in the range of a few nanometers. We observed a reduction of a few orders of magnitude in friction coefficient due to the periodic vibrations. Friction reduction is over a wide range of vibration frequencies and amplitudes. Very low values (of the order of 0.01) of friction coef
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