A5060767977- Lipid Membrane Structure and Behavior
- Surfactants and Colloidal Systems
- Pickering emulsions and particle stabilization
- Spectroscopy and Quantum Chemical Studies
- Advanced Sensor and Energy Harvesting Materials
- Surface Modification and Superhydrophobicity
- Advanced Polymer Synthesis and Characterization
- Nanomaterials and Printing Technologies
- Advanced battery technologies research
- Polymer Surface Interaction Studies
- Proteins in Food Systems
- Synthesis and properties of polymers
- Polymer composites and self-healing
- Electrocatalysts for Energy Conversion
- Electrostatics and Colloid Interactions
- Supercapacitor Materials and Fabrication
- Minerals Flotation and Separation Techniques
- Force Microscopy Techniques and Applications
- Adhesion, Friction, and Surface Interactions
- Gas Sensing Nanomaterials and Sensors
- Rheology and Fluid Dynamics Studies
- Material Dynamics and Properties
- Conducting polymers and applications
- Nanopore and Nanochannel Transport Studies
- Extraction and Separation Processes
Korea Advanced Institute of Science and Technology
2016-2025
Pohang University of Science and Technology
2025
Kootenay Association for Science & Technology
2017-2025
Daejeon University
2020
Hankuk University of Foreign Studies
2020
Seoul National University of Science and Technology
2019
Seoul National University Bundang Hospital
2018
Konkuk University
2016-2018
University of California, Santa Barbara
2010-2015
Korea Institute of Science & Technology Information
2013-2015
Abstract High internal phase emulsions have been widely used as templates for various porous materials, but special strategies are required to form, in particular, particle-covered ones that more difficult obtain. Here, we report a versatile strategy produce stable high Pickering emulsion by exploiting depletion interaction between an droplet and particle using water-soluble polymers depletant. This attractive facilitating the adsorption of particles onto interface simultaneously suppressing...
Abstract With the increasing interest and demand for epidermal electronics, a strong interface between sensor biological surface is essential, yet achieving such still challenge. Here, calcium (Ca)‐modified biocompatible silk fibroin as adhesive electronics proposed physical principles behind its interfacial properties are reported. A characteristic (>800 N m −1 ) observed because of increase in both viscoelastic property mechanical interlocking through incorporation Ca ions. Furthermore,...
Liquid metal is being regarded as a promising material for soft electronics owing to its distinct combination of high electrical conductivity comparable that metals and exceptional deformability derived from liquid state. However, the applicability still limited due difficulty in simultaneously achieving mechanical stability initial conductivity. Furthermore, reliable rapid patterning stable directly on various substrates at high-resolution remains formidable challenge. In this work,...
Abstract Development of coating technologies for electrochemical sensors that consistently exhibit antifouling activities in diverse and complex biological environments over extended time is vital effective medical devices diagnostics. Here, we describe a micrometer-thick, porous nanocomposite with both electroconducting properties enhances the sensitivity sensors. Nozzle printing oil-in-water emulsion used to create 1 micrometer thick composed cross-linked albumin interconnected pores gold...
Mechanical properties of conducting polymers are an essential consideration in the design flexible and stretchable electronics, but guidelines for material having both high mechanical electrical remain limited. Here we provide important guideline mechanically robust, electroactive polymer thin films terms molecular weight polymers. These studies based on a highly efficient, representative n-type conjugated (P(NDI2OD-T2)) revealed marked enhancement across narrow range, highlighting existence...
Two-dimensional films of surface-active agents—from phospholipids and proteins to nanoparticles colloids—stabilize fluid interfaces, which are essential the science, technology engineering everyday life. The 2D nature interfaces present unique challenges opportunities: coupling between bulk fluids complicates measurement surface dynamic properties, but allows interfacial microstructure be directly visualized during deformation. Here we a novel technique that combines active microrheology...
We present systematic measurements of the surface rheology monolayers liquid-condensed (LC) dipalmitoylphosphatidylcholine (DPPC) at air–water interface. Using microfabricated, ferromagnetic 'microbuttons' as new microrheological probes, we measure linear viscoelastic moduli LC DPPC both pressure and frequency are varied. Visualization this interface reveals that interlocked liquid crystalline domains comprise an LC-DPPC monolayer give rise to a solid response. Two distinct behaviors arise...
Abstract Conductive metal-organic framework (C-MOF) thin-films have a wide variety of potential applications in the field electronics, sensors, and energy devices. The immobilization various functional species within pores C-MOFs can further improve performance extend thin films. However, developing facile scalable synthesis high quality ultra-thin while simultaneously immobilizing MOF remains challenging. Here, we develop microfluidic channel-embedded solution-shearing (MiCS) for ultra-fast...
Iminosemiquinone-linker-based conductive metal-organic frameworks (c-MOFs) have attracted much attention as next-generation electronic materials due to their high electrical conductivity combined with porosity. However, the utility of such c-MOFs in high-performance devices has been limited date by lack high-quality MOF thin-film processing. Herein, a technique known microfluidic-assisted solution shearing post-synthetic rapid crystallization (MASS-PRC) process is introduced generate...
Abstract Liquid-liquid phase separation of proteins occurs on both surfaces cellular membranes during diverse physiological processes. In vitro reconstitution could provide insight into the mechanisms underlying these events. However, most existing techniques access to only one membrane surface, making it difficult probe transmembrane phenomena. To study protein simultaneously surfaces, we developed an array freestanding planar lipid membranes. Interestingly, observed that liquid-like...
Significance Replacement lung surfactants have dramatically reduced premature infant mortality owing to respiratory distress syndrome. However, clinical surfactant varies widely in composition, and even the existence of cholesterol native remains controversial. Improving replacement will require an understanding each molecular component’s role a film’s static dynamic properties. Here, we show that small fractions reduce viscosity model interfaces by orders magnitude while leaving...
In vanadium redox flow batteries (VRFBs), a perfluorinated sulfonic acid (PFSA) ionomer membrane plays crucial role in transporting ions through hydrophilic channels. However, its randomly interconnected channels with relatively large size hydrated state cause low proton/vanadium ion selectivity, imposing limitation enhancing performance of VRFB. Herein, we develop an ultrathin PFSA highly aligned reduced size, by molecular arrangement on the air/water interface. Well-ordered dramatically...
Liquid crystal epoxy resins (LCERs) with high thermal conductivity have been drawing significant attention to overcome the limitation of polymeric composites. Nonetheless, strategy enhance LCERs has primarily focused on improving well-ordered molecular structure originated from LC phases reduce phonon scattering. Furthermore, other important factors for enhancement such as intermolecular interaction, fine-tuning polymer chain structure, and interchain conjugation rarely investigated LCERs....
Abstract The anisotropic water interfaces provide an environment to drive various chemical reactions not seen in bulk solutions. However, catalytic by the aqueous are still their infancy, with emphasis being on reaction rate acceleration water. Here, we report that oil-water interface activates and oxidizes C(sp 3 )-H bonds toluene, yielding benzaldehyde high selectivity (>99%) conversion under mild, catalyst-free conditions. Collision at between oil-dissolved toluene hydroxyl radicals...
Heat dissipation materials in which fillers are dispersed a polymer matrix typically do not exhibit both high thermal conductivity (k) and processability due to trade-off. In this paper, we fabricate heat composites overcome the trade-off using liquid metal (LM). By exceeding conventional filler limit, ten times higher k is achieved for 90 vol% LM composite compared with of 50 composite. Further, an even by introducing h-BN between droplets, highest study was 17.1 W m-1 K-1. The processable...
Versatile methods are described for the fabrication of micrometer-scale particles with defined shape, ferro- or paramagnetic properties, and amphiphilic Janus surface chemistry. Examples their utility include measuring rheological properties complex, two-dimensional fluid interfaces reversible, directed self-assembly at interfaces. Detailed facts importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited typeset. They made...
Double emulsions, the simplest form of multiple emulsion, have been intensively utilized in various industries as well fundamental research. A variety strategies to effectively double emulsions developed, but no simple yet controlled and scalable technique has achieved yet. Herein, we examine mechanism entire process emulsion formation by phase inversion, propose a universal one-step strategy for an oil/water/oil using oil soluble polymers hydrophobic silica nanoparticles. We demonstrate...