- Advanced Sensor and Energy Harvesting Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Pickering emulsions and particle stabilization
- Photonic Crystals and Applications
- Nanomaterials and Printing Technologies
- Conducting polymers and applications
- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Memory and Neural Computing
- Nanofabrication and Lithography Techniques
- Tactile and Sensory Interactions
- Advanced Materials and Mechanics
- Micro and Nano Robotics
- Surface Modification and Superhydrophobicity
- Advanced biosensing and bioanalysis techniques
- Polymer Surface Interaction Studies
- Photonic and Optical Devices
- Supercapacitor Materials and Fabrication
- Innovative Microfluidic and Catalytic Techniques Innovation
- Additive Manufacturing and 3D Printing Technologies
- Molecular Sensors and Ion Detection
- Analytical Chemistry and Sensors
- Ferroelectric and Negative Capacitance Devices
- Electrowetting and Microfluidic Technologies
Korea Research Institute of Chemical Technology
2016-2024
Korea University of Science and Technology
2023-2024
Gyeongsangnam-do Agricultural Research and Extension Services
2024
Sahmyook University
2022-2023
Seoul National University
2012-2023
Chungnam National University
2021-2022
Kyung Hee University
2021
Daejeon University
2018-2019
Government of the Republic of Korea
2018-2019
Korea Advanced Institute of Science and Technology
2006-2018
Janus-Mikrokügelchen mit einer superhydrophoben und hydrophilen Oberflächenhälfte wurden auf photochemischem Weg aus Pickering-Emulsionströpfchen erhalten. An Luft-Wasser-Grenzfläche bilden diese Kügelchen eine undurchdringliche flexible superhydrophobe Barriere. Potenzielle Anwendungen finden sich in größenabhängigen semipermeablen Membranen, schwimmenden Mikromaschinen Beschichtungen.
In this paper we discuss the transformation of a sheet material into wide range desired shapes and patterns by introducing set simple cuts in multilevel hierarchy with different motifs. Each choice hierarchical cut motif level allows to expand unique structure properties. We can reverse-engineer expanded geometries find requisite pattern produce it without changing physical properties initial material. The concept was experimentally realized applied create an electrode that expands >800%...
Acyclic o-phenylene-bridged bis(anilido-aldimine) compounds, o-C(6)H(4){C(6)H(2)R(2)N=CH-C(6)H(4)-(H)N(C(6)H(3)R'(2))}(2) and related 30-membered macrocyclic o-C(6)H(4){C(6)H(2)R'(2)N=CH-C(6)H(4)-(H)N-C(6)H(2)R(2)}(2) (o-C(6)H(4)) are prepared. Successive additions of Me(2)Zn SO(2) gas to the compounds afford quantitatively dinuclear mu-methylsulfinato zinc complexes, o-C(6)H(4){(C(6)H(2)R(2)N=CH-C(6)H(4)-N(C(6)H(3)R'(2))-kappa(2)-N,N)Zn(mu-OS(O)Me)}(2) (R = iPr R' iPr, 29; R Et Et, 30; Me...
Monodisperse aqueous emulsion droplets encapsulating colloidal particles were produced in the oil phase, and controlled microwave irradiation of drop phase created spherical crystals by so-called evaporation-induced self-organization particles. Unlike usual crystals, symmetry (or photonic balls) possessed band gaps for normal incident light independent position all over surface. While consolidation an oven took several hours, present microwave-assisted evaporation could reduce time complete...
Pixelated inverse opals with red, green, and blue colors were prepared by hybridizing convective assembly of colloidal particles photolithography techniques. The brilliant structural colors, high mechanical stability, small feature size the pixels simultaneously accomplished, thereby providing color reflectors potentially useful for display devices. Moreover, this hybridized method provides a general means to create multi-colored photonic crystals. As service our authors readers, journal...
A high-performance piezoelectric nanocomposite generator (PNG) based on chemically reinforced composites is demonstrated by incorporating amine-functionalized lead zirconate titanate (PZT-NH<sub>2</sub>) nanoparticles into a polymer matrix.
Structural color graphics with any design and combination can be directly printed high precision.
Recently, many studies have been reported on functional adhesives that are applicable in wet conditions as well air conditions. In this study, a novel polymer hydrogel mimics the mussel foot proteins (Mfps) was designed an adhesive can adhere strongly to various substrates Polyallylamine–hydrocaffeic acid (PAA–CA) conjugates were synthesized introduce catechol moiety into PAA backbone. The PAA–CA hydrogels simply prepared by controlling pH enable formation of dynamic imine bond via Schiff...
Transparent, superamphiphobic surfaces that repel both water and oils are prepared from mushroom-like micropillar arrays consisting of nanoparticles only at the top pillars by controlled compartment filling silica into bottom poly(dimethylsiloxane) (PDMS) mold, followed infiltration epoxy UV curing. Because nanoparticle decorated pillar heads more resistant to O2 plasma than polymer pillars, we can precisely control head size micropillars nanoroughness on varying time. The combination leads...
Light‐weight, power‐free mechanochromic sensors that can change and record the reflective color depending on magnitude rate of applied force are fabricated from inverse opals by infiltrating colloidal crystals silica particles with uncrosslinked SU‐8, followed removal templates. The mechanical sensing range materials is high, 17.6–20.4 MPa. Due to elastoplastic deformation SU‐8 films, deformed structures thus colors be locked after load, therefore establishing a quantitative relationship...
Due to its excellent capacity, around 4000 mA h g−1, silicon has been recognized as one of the most promising lithium-ion battery anodes, especially for future large-scale applications including electrical vehicles and utility power grids. Nevertheless, Si suffers from a short cycle life well limitations scalable electrode fabrication. Herein, we report novel design highly robust anodes: nanoparticles embedded in porous nitrogen-doped carbon spheres (NCSs). The nature NCSs buffers volume...
In this work, the fabrication and application of highly conductive, robust, flexible, oxidation-resistant Cu–Ni core–shell nanoparticle (NP)-based electrodes have been reported. Cu@Ni NPs with a tunable Ni shell thickness were synthesized by varying Cu/Ni molar ratios in precursor solution. Through continuous spray coating flash photonic sintering without an inert atmosphere, large-area NP-based conductors fabricated on various polymer substrates. These demonstrate low sheet resistance 1.3 Ω...
The use of 3-dimensional (3D) printable conductive materials has gained significant attention for various applications because their ability to form unconventional geometrical architectures that cannot be realized with traditional 2-dimensional printing techniques. To resolve the major requisites in printed electrodes practical (including high conductivity, 3D printability, excellent adhesion, and low-temperature processability), we have designed a chemically-reinforced multi-dimensional...
Abstract The triboelectric nanogenerator (TENG) is gaining recognition as a highly promising, eco‐friendly self‐powered device for the growth of Internet Things (IoT). To improve performance TENGs, diverse materials are employed interlayers. However, challenges related to cost and stability persist. Herein, strategy that incorporates ion‐containing electrolyte polymers interlayers presented. This approach effectively mitigates charge decay maximizes TENG efficiency by leveraging high...
Surface-enhanced Raman scattering (SERS) has been considered as one of the most promising tools for molecular analysis. To develop practical platforms, a variety nanoparticles and two-dimensional (2D) nanostructures have prepared. However, low signal intensity or slow binding kinetics in conventional approaches limits their applications. overcome these shortcomings, production usage three-dimensional (3D) remain an important yet unmet need. In this paper, we report novel effective...
Large-area, highly ordered, Ag-nanostructured arrays with various geometrical features were prepared for use as surface-enhanced Raman scattering (SERS)-active substrates by the self-assembly of inorganic particles on an SU-8 surface, followed particle embedding and Ag vapor deposition. By adjusting time particles, size nanogap between geometrically separated hole bowl-shaped could be controlled in range 60 nm to 190 nm. More importantly, surface was covered hexagonally ordered nanopillars,...
Abstract Recently, the fabrication of 3D circuits has attracted significant attention in context realization a new‐generation printed electronics. In particular, form‐factor free Cu conductors have been recognized as key to constituent layer that can interconnect on demand variety active/passive components arbitrarily designable platforms. However, even with their characteristic advantages cost‐effectiveness and high electrical conductivity, not suggested, owing difficulty suppressing...
Stretchable electronic circuits are critical in a variety of next-generation electronics applications, including soft robots, wearable technologies, and biomedical applications. To date, printable composite conductors comprising various types conductive fillers have been suggested to achieve high electrical conductance excellent stretchability. Among them, liquid metal particles considered as viable candidate filler that can meet the necessary prerequisites. However, mechanical activation...
Abstract Photonic crystals with mechanochromic properties are currently under intensive study to provide intuitive colorimetric detection of strains for various applications. However, the sensitivity color change strain is intrinsically limited, as degree deformation determines wavelength shift. To overcome this limitation, auxetic photonic patterns that exhibit ultra‐sensitive mechanochromism designed. These have a regular arrangement cuts expand accommodate strain, while skeletal framework...
Well-defined nanovoid and metal- nanocap arrays are fabricated on flexible polymer substrates with controlled sizes morphologies, via trapping of inorganic particles at a polymer-film surface. The proposed method provides platform to create an effective SERS substrate, for use in devices such as chemical biomolecular sensors. Detailed facts importance specialist readers published ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available...