A5063277736- Structural Behavior of Reinforced Concrete
- Fire effects on concrete materials
- Nanoplatforms for cancer theranostics
- Carbon and Quantum Dots Applications
- Luminescence Properties of Advanced Materials
- Luminescence and Fluorescent Materials
- Structural Load-Bearing Analysis
- Quantum Dots Synthesis And Properties
- Advanced biosensing and bioanalysis techniques
- Proteoglycans and glycosaminoglycans research
- Fiber-reinforced polymer composites
- Graphene and Nanomaterials Applications
- Estrogen and related hormone effects
- Photonic Crystals and Applications
- Supramolecular Chemistry and Complexes
- Advanced Nanomaterials in Catalysis
- Advancements in Photolithography Techniques
- Tattoo and Body Piercing Complications
- Tribology and Wear Analysis
- Structural Engineering and Vibration Analysis
- Electron and X-Ray Spectroscopy Techniques
- Structural mechanics and materials
- Nanocluster Synthesis and Applications
- Mechanical Behavior of Composites
- Structural Response to Dynamic Loads
University of Seoul
2023-2024
Pohang University of Science and Technology
2015-2021
Samsung (United States)
2017
The recent progress in photonic nanomaterials has contributed greatly to the development of photomedicines. However, finite depth light penetration is still a serious limitation, constraining their clinical applications. Here, we developed poly(allylamine) (PAAm)-modified upconversion nanoparticle/hyaluronate–rose bengal (UCNP/PAAm/HA-RB) conjugate complex for photochemical bonding deep tissue with near-infrared (NIR) illumination. Compared conventional invasive treatment via suturing and...
The recent progress in various biomaterials with unique physiological and pharmacological properties has expedited the development of translational medicines for diagnosis, prognosis, therapy intractable diseases. Hyaluronic acid (HA) is one such that attracted great attention due to its characteristics biomedical applications. In this Perspective, we provide an overview HA-based a variety forms as chemical biological conjugates, nanoparticles, nanoparticle hybrid systems, hydrogels,...
Noninvasive real-time biosensors to measure glucose levels in the body fluids have been widely investigated for continuous monitoring of diabetic patients. However, they suffered from low sensitivity and reproducibility due instability nanomaterials used biosensors. Here, we developed a hyaluronate–gold nanoparticle/glucose oxidase (HA–AuNP/GOx) complex an ultralow-power application-specific integrated circuit chip noninvasive robust wireless patch-type sensors. The HA–AuNP/GOx was prepared...
Abstract Among various 2D nanomaterials, molybdenum disulfide (MoS 2 ) exhibits unique visible photoluminescence with high absorption at the near‐infrared (NIR) range. Despite these optical properties, efforts to use MoS nanomaterials for imaging and photothermal therapy are hampered by their instability low intracellular delivery efficiency. Multifunctional conjugated hyaluronate (HA) cancer theranosis is reported herein. HA facilitates of tumor cells HA‐receptor mediated endocytosis. In...
Abstract The development of intrinsically multicolor‐emitting carbon nanodots (CNDs) has been one the great challenges for their various fields applications. Here, controlled electronic structure engineering CNDs is performed to emit two distinct colors via facile surface modification with 4‐octyloxyaniline. so‐called dual‐color‐emitting (DC‐CNDs) can be stably encapsulated within poly(styrene‐ co ‐maleic anhydride) (PSMA). prepared water‐soluble DC‐CNDs@PSMA successfully applied in vitro...
With biocompatibility, biodegradability, and high functionality, silica nanoparticles (SNPs) have been widely investigated for various biomedical applications. However, lack of optical fluorescence has limited the application SNPs as a degradable imaging agent. Here, we hydrothermally synthesized fluorescent by artificially generating optically active defect centers using tetraethyl orthosilicate (3-aminopropyl)trimethoxysilane. The demonstrated strong blue photoluminescence originating from...
Carbon fiber-reinforced polymer (CFRP) has attracted attention for the reinforcement and retrofitting of concrete structures. Thus, their degradation in elevated temperatures is important feature to investigate. Herein, influence on microstructure microhardness properties different types CFRP was investigated. A series plate-, sheet-, bar-type samples were fired at 150, 250, 350, 450°C. Crystal structural epoxy resin matrices carbon fibers composites examined using X-ray diffraction...
The origin and classification of energy states, as well the electronic transitions transfers associated with them, have been recognized critical factors for understanding optical properties carbon nanodots (CNDs). Herein, we report synthesis CNDs in an optimized process that allows low-temperature carbonization using ethanolamine major precursor citric acid additive. results obtained herein suggest states our can be classified into four different types based on their chemical origin:...
Human parathyroid hormone 1–34 fragment (PTH1–34) has been used as a FDA-approved therapeutics to treat osteoporosis by daily subcutaneous injection. In this work, we successfully developed PTH1–34 conjugated hyaluronic acid (HA) for the transdermal treatment of with improved patient compliance. HA-PTH1–34 conjugate was synthesized coupling reaction between aldehyde group introduced HA and amine PTH1–34. After characterization gel permeation chromatography (GPC) ELISA, biological effect on...
We developed supramolecular hydrogels encapsulating bioengineered mesenchymal stem cells for ischemia therapy.
Initial readiness of EUV (extreme ultraviolet) patterning was demonstrated in 2016 with IBM Alliance's 7nm device technology. The focus has now shifted to driving the 'effective' k1 factor and enabling second generation patterning. With substantial cost exposure there is significant interest extending capability do single EUV. To enable this, emphasis must be placed on aspect ratios, adhesion, defectivity reduction, etch selectivity, imaging control whole process. Innovations resist...
Multispectral transparent films of upconversion nanoparticles are developed for near-infrared encoding wearable devices including contact lenses and patch devices.
Glass fiber-reinforced polymers (GFRPs) have attracted significant attention as structural materials because of their high fatigue resistance, corrosion strength, and stiffness. This study examined the effect elevated temperatures (150, 250, 350, 450oC) on microstructural mechanical properties GFRP plates. The number bubbles increased firing temperature increased, burst at 250oC or higher, forming pores surface. A tensile test was conducted, maximum stress plates fired 150, 350oC reduced...
We successfully developed an NIR light-triggered <italic>in vivo</italic> on–off tattoo system using hyaluronate modified upconversion nanoparticles for various biomedical applications.
In article number 1801036, Ki Su Kim, Sei Kwang Hahn, and co-workers develop hyaluronate conjugated molybdenum disulfide (HA-MoS2 conjugate) for targeted cancer theranosis. The HA-MoS2 conjugate can be successfully used both photoacoustic fluorescence imaging. addition, upon NIR light illumination, enables highly effective target-specific photothermal therapy. Taken together, appears to show a great potential various theranostic applications.