A5101581764- Dendrimers and Hyperbranched Polymers
- Force Microscopy Techniques and Applications
- Surface Modification and Superhydrophobicity
- Nanofabrication and Lithography Techniques
- Luminescence and Fluorescent Materials
- Climate variability and models
- Conducting polymers and applications
- TiO2 Photocatalysis and Solar Cells
- Synthesis and properties of polymers
- Advanced Polymer Synthesis and Characterization
- Biofuel production and bioconversion
- Enzyme Production and Characterization
- Network Traffic and Congestion Control
- Advanced machining processes and optimization
- Molecular Junctions and Nanostructures
- Marine and coastal ecosystems
- Organic Electronics and Photovoltaics
- Fluid Dynamics and Thin Films
- Dyeing and Modifying Textile Fibers
- Organic Light-Emitting Diodes Research
- Educational Systems and Policies
- Studies on Chitinases and Chitosanases
- Oceanographic and Atmospheric Processes
- biodegradable polymer synthesis and properties
- Advanced Photocatalysis Techniques
City University of Hong Kong
2023-2025
Hanyang University
2019-2024
Pukyong National University
2021-2024
Ewha Womans University
2005-2024
APEC Climate Center
2020-2023
Climate Analytics
2023
Korea Institute of Science and Technology
2023
Pohang University of Science and Technology
2022-2023
Institute of Information Science
2023
Yonsei University
2023
Large content providers build points of presence around the world, each connected to tens or hundreds networks. Ideally, this connectivity lets better serve users, but cannot obtain enough capacity on some preferred peering paths handle peak traffic demands. These constraints, coupled with volatile and performance limitations 20 year old BGP protocol, make it difficult best use connectivity.
Abstract With the development of wearable electronics, use engineered functional inks with printing technologies has attracted attention owing to its potential for applications in low‐cost, high‐throughput, and high‐performance devices. However, improvement conductivity stretchability mass production is still a challenge practical applications. Herein, scalable efficient fluid dynamics process that produces highly stretchable, conductive, printable containing high concentration graphene...
Immunotherapies have been gaining attention for the prevention of cancer recurrence and metastasis. Cancer immunotherapy can induce memory cells to target cancer-specific antigens and, thus, selectively kill cells. However, there are difficulties in inducing antigen-specific immunity due limited knowledge regarding antigens. In this study, we synthesized a dual-functional hydrogel antigen generation immune activation.To elicit self-antigen-specific response, an alginate-collagen-based...
Since the first report on unexpected ferroelectricity of fluorite‐structure oxides in 2011, this topic has provided a pathway for new research directions and opportunities. Based theoretical calculations experimental demonstrations, it is now well known that ferroelectrics are compatible with complementary metal–oxide–semiconductor technology exhibit ferroelectric properties at extremely thin (<10 nm) thicknesses. It should be noted noncentrosymmetric orthorhombic phase, which responsible...
In this Letter, a high-pressure annealing (HPA) process is proposed as way to reduce the thermal budget of Hf0.5Zr0.5O2 (HZO) thin films with ferroelectric behaviors. The low-thermal-budget essential for integrating devices in back-end-of-line provide more functionalities and effective memory area. For HZO film annealed at 300 °C using HPA process, an orthorhombic phase responsible behavior was formed decrease thickness, resulting remanent polarization (Pr) ∼13 μC/cm2 (i.e., 2Pr ∼26 μC/cm2)....
Using molecular dynamics simulation, we studied the wetting properties of a surface textured with hydrophobic pillars, several nanometers in size. The drying transition water confined between square or circular pillars was related to Wenzel (WZ) Cassie–Baxter (CB) droplet deposited on periodic pillars. inter-pillar spacing at which occurs compared that predicted from continuum theory. Such comparison revealed line tension plays an important role behavior present nm-sized molecules near...
Determining a feasible path for nonholonomic mobile manipulators operating in congested environments is challenging. Sampling-based methods, especially bi-directional tree search-based approaches, are amongst the most promising candidates quickly finding paths. However, sampling uniformly when using these methods may result high computation time. This paper introduces two techniques to accelerate motion planning of such robots. The first one coordinated focusing samples manipulator and base...
The divergent synthesis of end-capped silole dendrimers Gn-2n+1Silole (n = 1−4) using 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane [Me(CH2CH)SiO]4 as a core molecule and allyl alcohol/dichloromethylsilane building block is described in this paper. reaction the dichloride functionalities carbosiloxane Gn-2n+2Cl with 1,4-diphenylbutadiene-1,4-dianions (1) provided an effective route for attachment to dendritic periphery. In addition, siloles GBn-2nSilole 1−3) based on...
The phase behavior of the water confined between hydrophobic pillars was studied by using a simple thermodynamic theory and lattice gas Monte Carlo simulation. drying transition with decreasing spacing is related to Wenzel (WZ) Cassie–Baxter (CB) droplet. Our agrees simulation for heights ranging from 11 100 nm. present further predicts that sufficiently large circular cannot sustain CB state even if are in contact each other.
A self-complementary metasurface is presented for application in multiband terahertz filters. The unit cell structures of the consist a combination an ordinary Jerusalem cross and its complementary counterpart that resonates THz regime. columnar repetition resonator enables spectral responses incident waves with mutually orthogonal linear polarizations. operating principles metamaterial interaction between juxtaposed crosses are explained using equivalent circuit method confirmed full-wave...
Abstract Fiber‐based products constitute a significant portion of plastic waste and cause environmental damage. In particular, discarded sanitary masks fishing gear disintegrate into microfiber plastics, posing threat to human health ecosystems. this study, we developed robust biodegradable nanocomposite fibers poly(butylene adipate‐ co ‐terephthalate) (PBAT)/cellulose nanocrystals (CNCs) (1 2 wt%) through dry‐jet wet spinning, by using dimethyl sulfoxide (DMSO) as common solvent. The...
Abstract This study aims to explore effective dust removal methods for the improvement of clothing care systems by analyzing fabric movement caused twist motion and examining its influence on performance. The finite element method simulation was used model tension at different vertical horizontal positions as a spring array, calculate movements each position over time when twisting force applied enable comparison with experiments. When observing due actual fabrics, silk showed greatest...
In dip-pen nanolithography (DPN), an atomic force microscopy tip delivers molecules to the substrate and generates a self-assembled monolayer (SAM) with nanometer resolution. Given changes from experiment experiment, it is important know how DPN affected by change in tip. principle, can alter initial conditions subsequent dropping of substrate. The present molecular dynamics simulation compares results obtained two different tips, quill type spherical cylindrical like fountain pen. We...
Using molecular dynamics simulations, we show that the minimum diameter of ordered self-assembled monolayer (SAM) structures alkanethiols on Au(111) is 1.9 nm at room temperature. This presumably sets ultimate resolution SAM patterns created by nanolithography. For SAMs larger than nm, tilt direction alkyl chain precesses around center SAM. precession changes a time scale increases from picoseconds to nanoseconds as size varies 2 3 nm.
A lattice gas Monte Carlo simulation was performed to examine the wetting properties of a surface texturized with nanometer-sized, dome-shaped pillars. The vapor and liquid phases gap between pillars were related Wenzel Cassie–Baxter states macroscopic water droplet resting on top We studied effects pillar size by systematically varying its height from 6 53 nm for fixed ratio width. With increasing interpillar spacing or pressure, domed penetrated smoothly down into This transition contrasts...
This study investigates the intricate process of surface polishing for ITO-coated Pyrex glass utilizing magnetic abrasive (MAP) while employing acoustic emission (AE) sensors real-time defect monitoring. MAP, known its versatility in achieving nanoscale thickness processing and uniform surfaces, has been widely used various materials. However, complexity process, influenced by multiple variables like cutting conditions, material properties, environmental factors, poses challenges to...
We report a molecular dynamics simulation of the nanometer water meniscus formed in dip-pen nanolithography (DPN). When an atomic force microscope tip is contact with surface, significantly asymmetric around axis. The as whole can move away from axis due to surface diffusion. structure fluctuates and its periphery has finite thickness large 25% width. simulated transport nonpolar hydrophobic molecules through meniscus. Molecules on of, not dissolving into interior As result, annular pattern...