Author
Myeongsoon Lee
Bio: Myeongsoon Lee is an academic researcher from Pukyong National University. The author has contributed to research in topics: Phase transition & Nanoparticle. The author has an hindex of 6, co-authored 17 publications receiving 117 citations.
Papers
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TL;DR: The detection range and sensitivity of the prepared sensor are good enough to diagnose the early stage of prostate cancer and over 10 times faster than enzyme-linked immunosorbent assay (ELISA), which is a general method for the detection of a specific protein in the modernized hospitals.
63 citations
TL;DR: In this article, the flat-band potential of the CuGaO electrode was determined using a Mott-Schottky plot, and the flatband potential was +0.18 V vs SCE at pH 4.8 and followed the Nernst equation with respect to pH.
Abstract: pellet electrode wereinvestigated in aqueous electrolyte solutions. The flat-band potential of this electrode, determined using a Mott-Schottky plot, was +0.18 V vs SCE at pH 4.8 and followed the Nernst equation with respect to pH. Under UVlight illumination, a cathodic photocurrent developed, and molecular hydrogen simultaneously evolved on thesurface of the electrode due to the direct reduction of water without deposition of any metal catalyst. Key Words : CuGaO
19 citations
TL;DR: In this article, an easy method for the preparation of bamboo-like conducting carbon nanotubes decorated with Au nanoparticles (Au-CNT), by carbonization of sucrose inside of anodic aluminum oxide (AAO) nanochannels (∼80nm and ∼30μm in diameter and length, respectively), was reported.
12 citations
TL;DR: In this article, a simple and inexpensive method of carbohydrate detection using a field effect transistor (FET) with Au nanoparticles (AuNPs) attached to multiwall carbon nanotubes (MWCNT), which does not require any enzymes or catalysts.
12 citations
TL;DR: In this article, the clear insulator (monoclinic-VO{sub 2}) to metal transition (IMT) was observed in electrical conductivity and differential scanning calorimeter (DSC) measurements at around 340 K, which is IMT temperature (T{sub H}), in the hydrothermally prepared VO{sub2} crystals.
10 citations
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TL;DR: In this paper, the size dependence in the transition temperature and hysteresis loops of the semiconductor-to-metal phase transition in VO 2 is described in terms of heterogeneous nucleation statistics with a phenomenological approach in which the density of nucleating defects is a power function of the driving force.
Abstract: We have observed size effects in the structural phase transition of submicron vanadium dioxide precipitates in silica. The VO 2 nanoprecipitates are produced by the stoichiometric coimplantation of vanadium and oxygen andsubsequent thermal processing. The observed size dependence in the transition temperature and hysteresis loops of the semiconductor-to-metal phase transition in VO 2 is described in terms of heterogeneous nucleation statistics with a phenomenological approach in which the density of nucleating defects is a power function of the driving force.
277 citations
Journal Article•
TL;DR: In this article, the electrical resistance of VO(2) nanobeams was measured while simultaneously mapping the domain structure with Raman spectroscopy to investigate the relationship between structural domain formation and the metal-insulator transition.
Abstract: The electrical resistance of single VO(2) nanobeams was measured while simultaneously mapping the domain structure with Raman spectroscopy to investigate the relationship between structural domain formation and the metal-insulator transition. With increasing temperature, the nanobeams transformed from the insulating monoclinic M(1) phase to a mixture of the Mott-insulating M(2) and metallic rutile phases. Domain fractions were used to extract the temperature dependent resistivity of the M(2) phase, which showed an activated behavior consistent with the expected Mott-Hubbard gap. Metallic monoclinic phases were also produced by direct injection of charge into devices, decoupling the Mott metal-insulator transition from the monoclinic to rutile structural phase transition.
166 citations
TL;DR: Dye-sensitized solar cells (DSCs) have experienced a renaissance as the best technology for several niche applications that take advantage of DSC's unique combination of properties: at low cost, they are composed of non-toxic materials, are colorful, transparent, and very efficient in low light conditions.
Abstract: Dye-sensitized solar cells (DSCs) are celebrating their 30th birthday and they are attracting a wealth of research efforts aimed at unleashing their full potential. In recent years, DSCs and dye-sensitized photoelectrochemical cells (DSPECs) have experienced a renaissance as the best technology for several niche applications that take advantage of DSCs' unique combination of properties: at low cost, they are composed of non-toxic materials, are colorful, transparent, and very efficient in low light conditions. This review summarizes the advancements in the field over the last decade, encompassing all aspects of the DSC technology: theoretical studies, characterization techniques, materials, applications as solar cells and as drivers for the synthesis of solar fuels, and commercialization efforts from various companies.
145 citations
TL;DR: In this article, the most recent developments in the engineering of multinary semiconductors for improved PEC performance, in which they mainly discuss the progress on semiconductor-liquid junctions rather than photovoltaic-electrolysis.
135 citations
TL;DR: The progress in functionalization of cellulose papers with antibodies, nucleic acids and nanomaterials in PBBs and μPADs, is discussed and critically evaluated.
131 citations