A5050223578- Graphene research and applications
- 2D Materials and Applications
- MXene and MAX Phase Materials
- Gas Sensing Nanomaterials and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Supercapacitor Materials and Fabrication
- Molecular Junctions and Nanostructures
- ZnO doping and properties
- Perovskite Materials and Applications
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Nanowire Synthesis and Applications
- Advanced Photocatalysis Techniques
- Carbon Nanotubes in Composites
- Advancements in Battery Materials
- Graphene and Nanomaterials Applications
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Ga2O3 and related materials
- Advanced Memory and Neural Computing
- Advanced Battery Materials and Technologies
- Quantum Dots Synthesis And Properties
- Nanofabrication and Lithography Techniques
- Semiconductor materials and devices
- Electrochemical sensors and biosensors
Korea Research Institute of Chemical Technology
2016-2025
Materials Research Center
2025
Daejeon University
2014-2021
Government of the Republic of Korea
2014-2021
Rutgers, The State University of New Jersey
2011-2012
Advanced Materials and Devices (United States)
2012
Seoul National University
2005-2010
Florida State University
2006
Northwestern University
2006
Kookmin University
2005
Biosensors, based on graphene-encapsulated nanoparticle arrays, for highly sensitive and selective detection of breast cancer biomarkers are successfully demonstrated. The increased surface-to-volume ratio significantly helped in lowering the limits (1 pM) target biomarkers. In addition, nature biosensor is demonstrated by detecting low concentrations Detailed facts importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or...
Abstract A step‐by‐step strategy is reported for improving capacitance of supercapacitor electrodes by synthesizing nitrogen‐doped 2D Ti 2 CT x induced polymeric carbon nitride (p‐C 3 N 4 ), which simultaneously acts as a nitrogen source and intercalant. The NH CN (cyanamide) can form p‐C on the surface nanosheets condensation reaction at 500–700 °C. complexes are then heat‐treated to obtain nanosheets. triazine‐based decomposes above 700 °C; thus, species be surely doped into internal layer...
An appropriate solution is suggested for synthesizing wafer-scale, continuous, and stoichiometric MoS2 layers with spatial homogeneity at the low temperature of 450 °C. It also demonstrated that -based visible-light photodetector arrays are both fabricated on 4 inch SiO2 /Si wafer polyimide films, revealing 100% active devices a narrow photocurrent distribution excellent mechanical durability.
Abstract 2D transition metal carbides and nitrides, namely MXenes, are normally synthesized in acidic solutions delaminated basic solutions. This results versatile materials with unique physical/chemical properties suitable for various practical applications. However, solution‐based chemical treatments can affect the structures of which accelerates oxidation reactions degrades their intrinsic properties. Here, long‐term stable Ti 3 C 2 T x dispersion deep eutectic solvents (DESs) that...
A directed-assembly method on the basis of graphene oxide (GO) pieces is developed, which allowed us to mass-produce a uniform array graphene-based ambipolar memory devices using only conventional microfabrication facilities. Significantly, we successfully demonstrated that this device can be operated as both conductivity-switching and new type-switching by adjusting charge density nanoparticles.
Single-walled carbon nanotubes and graphene hybrid films with complementary properties are combined for use in high-performance transparent electrodes field-effect transistors (FETs). Based on the transfer characteristics film-based FETs, an improved Ion/Ioff on-state current achieved, compared pristine graphene. Notably, film has a sheet resistance of 300 Ω/sq 96.4% transparency. As service to our authors readers, this journal provides supporting information supplied by authors. Such...
"Surface-programmed assembly" is presented as a technique (see Figure) to achieve high-precision assembly and alignment of large number pristine V2O5 nanowires on solid substrates. Positively charged surface molecular patterns guide the negatively Large-scale nanowire-based transistors demonstrated their gating effects are confirmed.
A facile methodology for the large-scale production of layer-controlled MoS2 layers on an inexpensive substrate involving a simple coating single source precursor with subsequent roll-to-roll-based thermal decomposition is developed. The resulting 50 cm long synthesized Ni foils possess excellent long-range uniformity and optimum stoichiometry. Moreover, this promising because it enables control number by simply adjusting concentration (NH4 )2 MoS4 . Additionally, capability practical...
New fiber-type piezoelectric nanogenerator devices consisting of radially aligned perovskite PbTiO3 nanotubes are designed for energy harvesting from arbitrary mechanical motion. The free-standing nanogenerators generate constant amount electric power by bending or wind motion regardless direction, thus, extending the possibility their practical applications. As a service to our authors and readers, this journal provides supporting information supplied authors. Such materials peer reviewed...
Despite many encouraging properties of transition metal dichalcogenides (TMDs), a central challenge in the realm industrial applications based on TMD materials is to connect large-scale synthesis and reproducible production highly crystalline materials. Here, primary aim resolve simultaneously two inversely related issues through MoS2(1-x) Se2x ternary alloys with customizable bichalcogen atomic (S Se) ratio via atomic-level substitution combined solution-based large-area compatible...
Abstract Structural engineering and hybridization of heterogeneous 2D materials can be effective for advanced supercapacitor. Furthermore, architectural design electrodes particularly with vertical construction structurally anisotropic graphene nanosheets, significantly enhance the electrochemical performance. Herein, MXene‐derived TiO 2 nanocomposites hybridized is synthesized via CO laser irradiation on MXene/graphene oxide nanocomposite film. Instantaneous photon energy by enables...
In this work, we present a facile and straightforward approach for fabricating highly stretchable photodetectors based on Ag2S Ti3C2Tx MXene hybrid materials. These devices exhibit exceptional mechanical resilience, maintaining stable electrical optical performance even after 10 000 cycles of 30% strain. The incorporation not only enhances the device's durability but also ensures retention conductivity under significant deformation, positioning as critical material advancement flexible...
Highly sensitive and wearable chemical sensors for the detection of toxic gas molecules are given significant attention a variety applications in human health care environmental safety. Herein, we demonstrated fiber-type based on graphene oxide functionalized with organic such as heptafluorobutylamine (HFBA), 1-(2-methoxyphenyl)piperazine (MPP), 4-(2-keto-1-benzimidazolinyl)piperidine (KBIP) by assembling (FGO) single yarn fabric. These FGO exhibited extraordinarily higher sensitivity upon...
In order to combine advantages of ZnO thin film transistors (TFTs) with a high on-off ratio and graphene TFTs extremely carrier mobility, we present facile methodology for fabricating film/graphene hybrid two-dimensional TFTs. Hybrid exhibited ambipolar behavior, an outstanding electron mobility 329.7 ± 16.9 cm2/V·s 105. The behavior the ZnO/graphene TFT could be due superimposed density states involving donor in bandgap films linear dispersion monolayer graphene. We further established...
Abstract We report the first attempt to prepare a flexoelectric nanogenerator consisting of direct-grown piezoelectrics on multi-walled carbon nanotubes (mwCNT). Direct-grown mwCNTs are formed by stirring and heating method using Pb(Zr 0.52 Ti 0.48 )O 3 (PZT)-mwCNT precursor solution. studied unit cell mismatch strain distribution epitaxial PZT nanoparticles, found that lattice is relaxed along growth direction. A PZT-mwCNT was produce peak output voltage 8.6 V an current 47 nA when force 20...
Here, we present a new approach to dual-channel gas sensors on the basis of role-allocated graphene/ZnO heterostructure, formed by complementary hybridization graphene and ZnO thin film. The method enables cyclic reproducible response as well high response. role allocation was verified studying electrical transport properties heterostructure. results indicated that top layer bottom act adsorption carrier conducting layer, respectively. charge interactions heterostructures were systematically...
Abstract The multilayer triboelectric nanogenerators (TENGs) are widely developed to enhance the output performance of device. However, these TENGs consisting electron transfer, transport, trap layers toward a large volumetric charge density should be wearable and mass‐produced for commercialization. Thus, appropriate material selection in respective fabrication method crucial commercialization TENG. This study presents all‐printed, sustainable based on accumulation polymers (EAPs) with...
A synthetic platform for industrially applicable two-dimensional (2D) semiconductors that addresses the paramount issues associated with large-scale production, wide-range photosensitive materials, and oxidative stability has not yet been developed. In this study, we attained 6 in. scale production of 2D SnSe spatial homogeneity using a rational based on thermal decomposition solution-processed single-source precursors. The long-range structural chemical homogeneities layers are manifested...
Abstract Portable and personalized artificial intelligence (AI)‐driven sensors mimicking human olfactory gustatory systems have immense potential for the large‐scale deployment autonomous monitoring of Internet Things (IoT) devices. In this study, an Q‐grader comprising surface‐engineered zinc oxide (ZnO) thin films is developed as nose, tongue, AI‐based statistical data analysis brain identifying both aroma flavor chemicals in coffee beans. A poly(vinylidene...