-
71
- Development of high-activity water electrolysis catalyst for high-efficiency alkaline fuel cell (2022.09.02)
- Development of high-activity water electrolysis catalyst for high-efficiency alkaline fuel cell Professor Seong Chan Jun's research team in the Department of Mechanical Engineering has developed a robust catalyst with high activity and high efficiency for efficient water electrolysis. A very active electrocatalyst similar to Pt/RuO2 is required for application to commercial high-efficiency alkaline fuel cells, but there is still a limitation in that it is difficult to synthesize. This research team overcame this limitation by using N-doped noble metal iridium diphosphide (N-IrP2 @CC) to achieve higher water decomposition current density than conventional catalysts. The results of this study were confirmed for publication this December in 'Applied Catalysis B: Environmental' (Impact Factor: 24.319, within the top 2%, Volume 319), an international excellent journal. The link: https://doi.org/10.1016/j.apcatb.2022.121906
- 기계공학부 2022.11.16
-
70
- A step towards carbon neutrality, achieved with nano-nickel particles (2022.08.30)
- A step towards carbon neutrality, achieved with nano-nickel particles Professor Jongsup Hong's research group in the Department of Mechanical Engineering has secured a high-stability nano-catalyst manufacturing technology with high conversion of CO2 and CH4 even at low temperatures. In order to promote the decomposition reaction of CO2, which generally has a high activation energy barrier and requires a high energy input, Professor Jongsup Hong's research group formed an optimal catalyst using a new anchoring technique with inexpensive nickel and alumina and evaluated its performance. The result of this study has significance in that it can contribute to the production of clean H2 and synthesis gas by actively utilizing the greenhouse gases (CO2 and CH4). The result was published in 'Chemical Engineering Journal' (Impact Factor: 16.744, Top 2.62%, Volume 446) in October 2022. The link: https://doi.org/10.1016/j.cej.2022.136978
- 기계공학부 2022.11.10
-
69
- Development of MEMS-based gas sensing system with ultra-high resolution, low power consumption, and gas selectivity
- Development of MEMS-based gas sensing system with ultra-high resolution, low power consumption, and gas selectivity Professor Jongbaeg Kim's research team in the Department of Mechanical Engineering and a research team in the Department of Electrical and Electronic Engineering conducted a study on a "MEMS-based gas sensing system." This study was published in the journal of 'IEEE Journal of Solid-state Circuits' (Impact Factor: 6.12) in August 2022. In this paper, we present an ultra-low power gas sensing system with an ultra-high resolution by integrating MEMS-based resistive gas sensors and Resistors-to-Digital Converter. Furthermore, the selectivity of the gas sensor was obtained by using different reactivity differences when driven at different temperatures. The link: 10.1109/JSSC.2022.3197549
- 기계공학부 2022.11.10
-
68
- Dual-Scale Porous Composite for Tactile Sensor with High Sensitivity over an Ultrawide Sensing Range (2022.08.15)
- Dual-Scale Porous Composite for Tactile Sensor with High Sensitivity over an Ultrawide Sensing Range Professor Jongbaeg Kim's research team in the Department of Mechanical Engineering conducted a study on a "flexible tactile sensor with high sensitivity over a wide sensing range using a dual-scale of porous structures." This study was published in the journal 'Small' (Impact Factor: 15.15, Top 6.83%) in August 2022. In this paper, we present that a flexible tactile sensor using a sponge structure with dual-scale pores and carbon nanotubes can detect pressure with high sensitivity and a wide sensing range. As a result, the sensor can be used as a human motion sensor, measuring from small pressures such as breathing to considerable pressures such as squats. The link: doi.org/10.1002/smll.202203193
- 기계공학부 2022.11.10
-
67
- Development of swellable hydrogel based microneedle dopamine sensor (2022.08.01)
- Development of swellable hydrogel based microneedle dopamine sensor Professor Wonhyoung Ryu's research team in the department of mechanical engineering reported the development of swellable hydrogel based microneedle sensor system for the rapid detection of dopamine in interstitial fluid and demonstrated its effectiveness as a biosensor. The results of this study were published in the international journal 'Advanced Materials Technologies' (Vol. 7, Issue 3, 2022, Impact Factor: 7.848, JCR top 17.87%). This study suggests pioneering results in the field of in vitro sensors by measuring the level of biomolecules rapidly and user-friendly utilizing the properties of swellable biomaterials. The link: doi.org/10.1002/admt.202100874
- 기계공학부 2022.11.10
-
66
- Professor Hyo-Il Jung was awarded Ministry of Science and ICT (2022.07.06)
- Professor Hyo-Il Jung was awarded Ministry of Science and ICT Professor Hyo-Il Jung won the award from the Ministry of Science and ICT Award at NANO KOREA 2022. He has contributed to leading the development of microfluidic chip technology that can separate nano-sized biological particles such as viruses and exosomes present in various liquid biopsies such as human blood and saliva and nano biosensor technology that can detect them with high sensitivity. This research has been published in the international journal named Biosensors and Bioelectorics (IF:12.545). The link: https://www.etnews.com/20220706000089, https://www.sciencedirect.com/science/article/pii/S0956566321009970
- 기계공학부 2022.11.10
-
65
- Fabrication of accelerated oxygen-evolving hybrid catalyst at high current densities for large-scale hydrogen production
- Fabrication of accelerated oxygen-evolving hybrid catalyst at high current densities for large-scale hydrogen production Professor Seong Chan Jun's research team in the Department of Mechanical Engineering conducted a study to fabricate a hybrid catalyst that amplifies alkaline water electrolysis at high current density. This research team achieved high-efficiency oxygen generation that satisfies safety and commercial standards at high current densities by using nickel-iron hydroxide doped with rhenium and nitrogen to overcome the process development limited by the low oxygen generation rate of water electrolysis generally used in industry. The results of this study were published as paper in the 'Chemical Engineering Journal' (Impact Factor: 16.744, Top 2.62%, Volume 435), an international excellent journal. The link: doi.org/10.1016/j.cej.2022.135184
- 기계공학부 2022.08.01
-
64
- Ultrasensitive detection and risk assessment of di(2-ethylhexyl) phthalate migrated from daily-use plastic products usin
- Ultrasensitive detection and risk assessment of di(2-ethylhexyl) phthalate migrated from daily-use plastic products using a nanostructured electrochemical aptasensor Professor Hyo-Il Jung's research team in the Department of Mechanical Engineering conducted a study on "An electrochemical aptasensor for high sensitivity detection of plasticizers". This study was published in 'Sensors and Actuators B: Chemical' (Impact Factor: 9.221, Top 6.32%, Volume 357), a global biosensor journal in April 2022. In this paper, an electrochemical aptasensor was successfully proposed that detects high-sensitivity plasticizers. Using this, a small amount of plasticizer migrated from daily used plastic products was monitored and the risk assessment according to plasticizer exposure was evaluated. The link: doi.org/10.1016/j.snb.2022.131381
- 기계공학부 2022.08.01
-
63
- Swellable hydrogel-based microneedle sensor for biomolecules detection (2022.03.01)
- Swellable hydrogel-based microneedle sensor for biomolecules detection Professor WonHyoung Ryu's research team in the Department of Mechanical Engineering developed a swellable hydrogel-based microneedle sensor to detect the dopamine concentration in the human body. This study presented research results that can pioneer the field of in vitro sensors by rapidly and easily measuring the level of substances in the body. The results of this study were published in the journal 'Advanced Materials Technologies' (Vol. 7, Issue 3, 2022, Impact factor: 8.756), with the title "Rapid Extraction and Detection of Biomolecules via a Microneedle Array of Wet-Crosslinked Methacrylated Hyaluronic Acid." The link: https://doi.org/10.1002/admt.202100874
- 기계공학부 2022.08.01
-
62
- Enhancement of durability of the photoelectrode for green hydrogen production using biomimetic hydrogel technology
- Enhancement of durability of the photoelectrode for green hydrogen production using biomimetic hydrogel technology A research team led by Professor Hyungsuk Lee in School of Mechanical Engineering developed a hydrogel protection layer that can dramatically increase the operation time of the photoelectrode, which produces hydrogen with water and light, by preventing the structural damage of the electrode through the joint research with the research group of Professor Jooho Moon in Department of Materials Science and Engineering. Photoelectrodes have a limited operation duration due to the detachment of surface catalyst and surface dissolution during their operation. Inspired by the fact that 'hydrogel' on the epidermal layer inhibits cell damage of 'marine plants' which perform photosynthesis in the harsh environment in the sea, the research team proposed the idea of coating the surface of a photoelectrode driven in water by the biomimetic hydrogel. In particular, by analyzing the physical interaction between the hydrogen bubbles generated at the photoelectrode and the protection layer through theoretical/numerical analysis and experiments, the research team found an optimal condition to minimize the mechanical damage to the protection layer by the bubbles. This study was published in ‘Nature Energy’ (Impact Factor 67.439, Percentile rank 0.420%), a journal publishing the best research on energy, on 9th June. The link: https://www.nature.com/articles/s41560-022-01042-5
- 기계공학부 2022.07.15