A5100760947- Silicone and Siloxane Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and properties of polymers
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Organic Light-Emitting Diodes Research
- Fuel Cells and Related Materials
- Luminescence and Fluorescent Materials
- Photopolymerization techniques and applications
- Nanomaterials and Printing Technologies
- Surface Modification and Superhydrophobicity
- Aerogels and thermal insulation
- Membrane-based Ion Separation Techniques
- Polymer composites and self-healing
- Advanced Fiber Optic Sensors
- Advanced Memory and Neural Computing
- Membrane Separation Technologies
- Photonic Crystals and Applications
- Analytical Chemistry and Sensors
- Transition Metal Oxide Nanomaterials
- Tactile and Sensory Interactions
- Advanced battery technologies research
- Physical Unclonable Functions (PUFs) and Hardware Security
- Advanced Control Systems Optimization
- Gold and Silver Nanoparticles Synthesis and Applications
Korea Advanced Institute of Science and Technology
2013-2020
Daejeon University
2019
Government of the Republic of Korea
2016
Seoul National University
2002-2012
Electrochromic devices have been widely adopted in energy saving applications by taking advantage of the electrode coloration, but it is critical to develop a new electrochromic device that can undergo smart coloration and wide spectrum transmittance response input light intensity while also functioning as rechargeable storage system. In this study, photoresponsive supercapacitor based on cellulose-nanofiber/Ag-nanowire/reduced-graphene-oxide/WO3 -composite capable undergoing "smart"...
We report vinyl-phenyl siloxane hybrid material (VPH) that can be used as a matrix for copper-clad laminates (CCLs) high-frequency applications. The CCLs, with VPH fabricated via radical polymerization of resin blend consisting sol–gel-derived linear vinyl oligosiloxane and bulky monomer, phenyltris(trimethylsiloxy)silane, achieve low dielectric constant (Dk) dissipation factor (Df). CCLs the exhibit excellent performance (Dk = 2.75, Df 0.0015 at 1 GHz) stability in wide frequency range (1...
We report a zirconium-phenyl siloxane hybrid material (ZPH) that can be used as robust LED encapsulant. The ZPH encapsulant was fabricated via hydrosilylation-curing of sol–gel derived multifunctional (vinyl- and hydride-functions) resins containing phenyl-groups Zr–O–Si heterometallic phase for achieving high refractive index (n ≈ 1.58). In thermal aging, the exhibited superior performances with optical transparency (∼88% at 450 nm) stability (no yellowing 180 °C 1008 h), compared to...
Herein, we report a new version of bioinspired chitin nanofiber (ChNF) transparent laminated composite film (HCLaminate) made siloxane hybrid materials (hybrimers) reinforced with ChNFs, which mimics the nanofiber-matrix structure hierarchical biocomposites. Our HCLaminate is produced via vacuum bag compressing and subsequent UV-curing matrix resin-impregnated ChNF paper (ChNF paper). It worthwhile to note that this type ChNF-based substrate retains strengths original compensates for paper's...
Solution-processed colloidal quantum dots (CQDs) are attractive materials for the realization of low-cost and efficient optoelectronic devices. Although impressive CQD-solar-cell performance has been achieved, fabrication CQD films is still limited to laboratory-scale small areas because complicated deposition inks. Large-area, uniform lead sulfide (PbS) inks successfully realized photovoltaic device applications by engineering solute redistribution droplets. It shown experimentally...
A high performance ladder-like structured methacrylate siloxane hybrid material (LMSH) was fabricated via simple hydrolytic sol⁻gel reaction, followed by free-radical polymerization. structurally ordered backbone, the structure, which is an essential factor for performance, could be achieved a short period of reaction in only 4 h. This results superior optical (Transmittance > 90% at 550 nm), thermal (T5 wt % decomposition 400 ℃ ), mechanical properties(elastic recovery = 0.86, hardness 0.6...
Any transition toward an era of flexible electronics will have to overcome the mechanical limitations materials. Specifically, attainment both strength and flexibility, which are generally mutually exclusive, is required including glass-like wear resistance, plastic-like compliance, a high level strain. Here, we fabricate urethane–methacrylate–siloxane hybrid (UMSH) material. It found that UMSH, with molecule-level hybridization urethane linkage methacrylate–siloxane conetworks, demonstrates...
The greatly improved thermal stability of QDs is achieved by introducing a linear-structured siloxane matrix for on-chip type applications.
Herein, a highly adhesive LED encapsulant (HAEncap) is proposed based on phenyl siloxane hybrid material with high thermal stability, refractive index, and transparency which uses cost-effective radical polymerization.
The desire for foldable display seems to be heading toward its zenith. However, mass production is still impeded by a few technical challenges, specifically, development of flexible cover window films. This invited paper demonstrates innovative hard coating (Flex9H ® ) plastic films, which exhibits glass‐like pencil hardness, plastic‐like flexibility and excellent optical transparency simultaneously.
ABSTRACT A thermally cured epoxy‐siloxane hybrid material that is curable at low temperature (L‐expoxy hybrimer) was investigated for use as an LED encapsulant. This new hybrimer fabricated using initiated, cationic polymerization of cycloaliphatic epoxy oligosiloxane (CAEO) resin, derived from non‐hydrolytic sol – gel, mixed with oxetane hardener in the presence a hexafluoroantimonate‐type thermo‐cationic initiator. The L‐epoxy lower (below 120 ° C) than previously reported anhydride (above...
Large-area solution-casting methods of colloidal quantum dots (CQDs) have suffered challenges in producing a uniform film due to the uncontrolled solute redistribution phenomenon during solvent evaporation. In article number 1805886, Jin Young Kim, Yeon Sik Jung, and co-workers find that systematic control evaporation dynamics enables CQD films be fabricated, demonstrating single-step deposition large-area for high-performance photovoltaic devices.
Abstract Reports have recently been published on ultrathin biofluid barriers, which enable the long‐term measurement of biological signals and exhibit conformability nonlinear surfaces such as skin organs. However, inorganic‐ organic‐based barriers process incompatibility high water permeability, respectively. Siloxane‐ (inorganic) based fluorinated epoxy (organic) hybrid materials (FEH) are demonstrated for bio‐fluidic barrier biocompatibility performance flexible electronic systems...
We present cost‐effective flexible fingerprint sensor for biometrics application beyond Si‐based material. Our Cu electrode based sensors were fabricated on PI substrate with and durable overlaid dielectric Overlaid layer has roles of both the capacitance protective from environment in place reinforced glass. The planarization suppresses generation noise signal between electrodes, resulting realistic fingerprints.
As a demand for thin & flexible optical sensors has increased, conventional glass substrates based filters needs to be replaced by film filters. In this paper, light absorbing dye‐doped siloxane are introduced replacing Light hybrid have good filtering ability in diverse wavelength ranges with high transmittance desired wavelengths, showing thermal and stability.
We suggest a robust generalized predictive control (RGPC) which guarantees H/sub /spl infin// norm bounds. The suggested is obtained by solving the min-max problem in nonrecursive forms. stability conditions of are derived somewhat simple form and it not required for solution to be saddle point solution. It also shown that bounds under same stability.