A5018744396- Phytochemical Studies and Bioactivities
- 2D Materials and Applications
- Graphene research and applications
- Phytochemistry and Bioactive Compounds
- Food Quality and Safety Studies
- Natural product bioactivities and synthesis
- Phytochemistry and Biological Activities
- Perovskite Materials and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Topological Materials and Phenomena
- Magnetic properties of thin films
- Quantum Dots Synthesis And Properties
- Quantum and electron transport phenomena
- Semiconductor Quantum Structures and Devices
- Genomics, phytochemicals, and oxidative stress
- Dermatology and Skin Diseases
- Cardiac Arrest and Resuscitation
- Diamond and Carbon-based Materials Research
- Seaweed-derived Bioactive Compounds
- Chalcogenide Semiconductor Thin Films
- Organic and Molecular Conductors Research
- Phytochemicals and Antioxidant Activities
- Hemodynamic Monitoring and Therapy
- Non-Invasive Vital Sign Monitoring
- Characterization and Applications of Magnetic Nanoparticles
The University of Texas at Austin
2021-2025
Korea Institute of Science and Technology
2019-2023
Pusan National University
2014-2023
Gyeongsang National University
2014-2015
Pohang University of Science and Technology
2013
Gyeongsang National University Hospital
2013
Hanyang University Seoul Hospital
1995
In van der Waals (vdW) heterostructures formed by stacking two monolayers of transition metal dichalcogenides, multiple exciton resonances with highly tunable properties are and subject to both vertical lateral confinement. We investigate how a unique control knob, the twist angle between monolayers, can be used dynamics. observe that interlayer lifetimes in MoSe2/WSe2 twisted bilayers (TBLs) change one order magnitude when is varied from 1° 3.5°. Using low-energy continuum model, we...
Identifying material parameters affecting properties of ferromagnets is key to optimized materials that are better suited for spintronics. Magnetic anisotropy particular importance in van der Waals magnets, since it not only influences magnetic and spin transport properties, but also essential stabilizing order the two-dimensional limit. Here, we report hole doping effectively modulates a ferromagnet explore physical origin this effect. Fe3-xGeTe2 nanoflakes show significant suppression with...
A long-standing pursuit in materials science is to identify suitable magnetic semiconductors for integrated information storage, processing, and transfer. Van der Waals magnets have brought forth new material candidates this purpose. Recently, sharp exciton resonances antiferromagnet NiPS3 been reported correlate with order, that is, the photoluminescence intensity diminishes above Néel temperature. Here, it found polarization of maximal emission rotates locally, revealing three possible...
Abstract Helical spin structures are expressions of magnetically induced chirality, entangling the dipolar and magnetic orders in materials 1–4 . The recent discovery helical van der Waals multiferroics down to ultrathin limit raises prospects large chiral magnetoelectric correlations two dimensions 5,6 However, exact nature magnitude these couplings have remained unknown so far. Here we perform a precision measurement dynamical coupling for an enantiopure domain exfoliated multiferroic. We...
Transition metal dichalcogenide heterostructures provide a versatile platform to explore electronic and excitonic phases. As the excitation density exceeds critical Mott density, interlayer excitons are ionized into an electron-hole plasma phase. The transport of highly non-equilibrium is relevant for high-power optoelectronic devices but has not been carefully investigated previously. Here, we employ spatially resolved pump-probe microscopy investigate spatial-temporal dynamics hot-plasma...
Asparagus cochinchinesis (A. cochinchinesis) is a medicine traditionally used to treat fever, cough, kidney disease, breast cancer, inflammatory disease and brain in northeast Asian countries. Although numerous studies of the anti‑inflammatory effects A. have been conducted, underlying mechanisms such macrophages remain be demonstrated. To investigate mechanism suppressive on response macrophages, alterations nitric oxide (NO) level, cell viability, inducible synthase (iNOS) cyclooxygenase‑2...
Background Paraquat (PQ) is a potent, highly toxic and widely used herbicide. The major medical problems associated with PQ are accidental or suicidal ingestion. There several prognostic markers of poisoning, the serum concentration considered to be best indicator outcome. However, measurement such limited in many hospitals. Objective present study was conducted investigate association absolute lymphocyte count (ALC) 30-day mortality rate patients poisoning. Methods We performed...
Perilla oil has been considered to have excellent potential for treating various diseases due its contents of beneficial fatty acids, such as α-linolenic acid, oleic acid and linoleic acid. The therapeutic effects molecular mechanism an acid-enriched cold-pressed perilla (LEP) on hepatic steatosis obesity model were investigated by analyzing alterations in fat accumulation endoplasmic reticulum (ER) stress-mediated autophagy, high-fat diet (HFD)-induced C57BL/6N mice treated with LEP 16...
Semiconductor moiré superlattices, characterized by their periodic spatial light emission, unveil a new paradigm of engineered photonic materials. Here, we show that ferroelectric domains formed in twisted hexagonal boron nitride (t-hBN) substrate can modulate emission from an adjacent semiconductor MoSe 2 monolayer. The electrostatic potential at the surface t-hBN provides simple way to confine excitons confined within and domain walls are spectrally separated because pronounced Stark...
Cheonggukjang (CKJ) is a fermented soybean product that exhibits diverse biological and pharmacological activities, including anti-obesity, anti-diabetic, anti-inflammatory effects on human chronic diseases. In this study, the of aqueous extract CKJ containing high concentration GABA atopic dermatitis (AD) were quantified using luciferase reporter system in IL-4/Luc/CNS-1 transgenic (Tg) mice. Alterations signal phenotypes AD Tg mice co-treated with phthalic anhydride (PA) for 4 weeks IVIS...
Use of multifunctional drugs with neurotrophic supporting and oxidative stress suppressing activity may be considered a therapeutic strategy to protect or repair cellular damage caused during the progression Alzheimer's disease (AD). In this study, we investigated effects aqueous extract A. cochinchinesis root (AEAC), particularly its role as nerve growth factor (NGF) stimulator anti-oxidant in Tg2576 mice showing AD phenotypes human.Tg2576 were received 100 mg/kg/day AEAC via oral...
Abstract To quantitatively evaluate the therapeutic effects of diosgenin (DG) and investigate role IL-4 on skin inflammation, alterations in luciferase-derived signal general phenotype biomarkers were measured IL-4/Luc/CNS-1 transgenic mice with phthalic anhydride (PA)-induced inflammation after treatment DG for 4 weeks. High levels detected abdominal region submandibular lymph node (SL) PA treated group was significantly decreased by 67–88% + cotreated group. Furthermore, weight spleen, IgE...
Ferroelectricity has been recently discovered in stacked or twisted van der Waals (vdW) moir\'e systems. The versatility of producing a large array size-tunable domains and integration with diverse functional materials make them an enticing platform for developing multifunctional devices. Here, we show that ferroelectric polar formed hexagonal boron nitride (t-hBN) substrate can modulate light emission from adjacent semiconductor monolayer. abrupt change electrostatic potential across the...
The inhibitory effects of Asparagus cochinchinensis against inflammatory response induced by lipopolysaccharide (LPS), substance P and phthalic anhydride (PA) treatment were recently reported for some cell lines animal models. To evaluate the hepatotoxicity nephrotoxicity A. toward livers kidneys ICR mice, alterations in related markers including body weight, organ urine composition, liver pathology kidney analyzed male female mice after oral administration 150, 300 600 mg/kg weight/day...
Asparagus cochinchinensis is a medical plant that has long been used to treat fever, cough, kidney disease, breast cancer, inflammatory disease and brain in northeast Asian countries. Although several studies have conducted on the anti-neuroinflammatory effects of A. cochinchinensis, correlation between these nerve growth factor (NGF) not yet examined. In this study, we investigated an aqueous extract (AEAC) secretion action mechanism NGF neuronal cells. The concentration protein supernatant...
본 연구에서는 천문동 건근의 부위에 따른 항산화 활성을 비교하여 이와 관련된 물질을 탐색하고 동정하였다. 건근에서 활성이 높은 부위는 껍질에 해당하고 DPPH radical 소거능, nitrite hydroxy 소거능 및 ABTS 양이온 소거능과 같은 껍질 부위에서 상대적으로 것을 확인할 수 있었으며, 이러한 결과는 존재하는 폴리페놀 화합물에 의한 것으로 판단되었다. 활성 HPLC를 이용하여 분리하고 동정한 결과 리그닌의 생합성에 중요한 전구물질인 caffeic acid가 주요 물질이었으며, 결과를 토대로 천문동이 지닌 효능을 최대로 사용하기 위해서는 천문동의 건조 후에 껍질을 제거하지 않고 사용하는 것이 바람직한 생각한다.