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Showing 1 to 12 of 1143 entries
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Enhanced photoelectrochemical water oxidation on bismuth vanadate by electrodeposition of amorphous titanium dioxide.

Journal of the American Chemical Society

Eisenberg D, Ahn HS, Bard AJ.
PMID: 25243345
J Am Chem Soc. 2014 Oct 08;136(40):14011-4. doi: 10.1021/ja5082475. Epub 2014 Sep 26.

n-BiVO4 is a promising semiconductor material for photoelectrochemical water oxidation. Although most thin-film syntheses yield discontinuous BiVO4 layers, back reduction of photo-oxidized products on the conductive substrate has never been considered as a possible energy loss mechanism in the...

Revisit to three-dimensional percolation theory: Accurate analysis for highly stretchable conductive composite materials.

Scientific reports

Kim S, Choi S, Oh E, Byun J, Kim H, Lee B, Lee S, Hong Y.
PMID: 27694856
Sci Rep. 2016 Oct 03;6:34632. doi: 10.1038/srep34632.

A percolation theory based on variation of conductive filler fraction has been widely used to explain the behavior of conductive composite materials under both small and large deformation conditions. However, it typically fails in properly analyzing the materials under...

Single-Nanoparticle Collision Events: Tunneling Electron Transfer on a Titanium Dioxide Passivated n-Silicon Electrode.

Angewandte Chemie (International ed. in English)

Ahn HS, Bard AJ.
PMID: 26377039
Angew Chem Int Ed Engl. 2015 Nov 09;54(46):13753-7. doi: 10.1002/anie.201506963. Epub 2015 Sep 17.

Single-nanoparticle collisions were observed on an n-type silicon electrode (600 μm diameter) passivated by a thin layer of amorphous TiO2, where the current steps occurred by tunneling electron transfer. The observed collision frequency was in reasonable agreement with that...

Effects of Feeder Cell Types on Culture of Mouse Embryonic Stem Cell In Vitro.

Development & reproduction

Park YG, Lee SE, Kim EY, Hyun H, Shin MY, Son YJ, Kim SY, Park SP.
PMID: 27004268
Dev Reprod. 2015 Sep;19(3):119-26. doi: 10.12717/DR.2015.19.3.119.

The suitable feeder cell layer is important for culture of embryonic stem (ES) cells. In this study, we investigated the effect of two kinds of the feeder cell, MEF cells and STO cells, layer to mouse ES (mES) cell...

Self-Positioned Nanosized Mask for Transparent and Flexible Ferroelectric Polymer Nanodiodes Array.

ACS applied materials & interfaces

Hyun S, Kwon O, Choi C, Vincent Joseph KL, Kim Y, Kim JK.
PMID: 27635787
ACS Appl Mater Interfaces. 2016 Oct 12;8(40):27074-27080. doi: 10.1021/acsami.6b08459. Epub 2016 Sep 28.

High density arrays of ferroelectric polymer nanodiodes have gained strong attention for next-generation transparent and flexible nonvolatile resistive memory. Here, we introduce a facile and innovative method to fabricate ferroelectric polymer nanodiode array on an ITO-coated poly(ethylene terephthalate) (PET)...

Simultaneous visualization of graphene grain boundaries and wrinkles with structural information by gold deposition.

ACS nano

Yu SU, Park B, Cho Y, Hyun S, Kim JK, Kim KS.
PMID: 25117455
ACS Nano. 2014 Aug 26;8(8):8662-8. doi: 10.1021/nn503550d.

Although line defects such as grain boundaries (GBs) and wrinkles are unavoidable in graphene, difficulties in identification preclude studying their impact on electronic and mechanical properties. As previous methods focus on a single type of line defect, simultaneous measurements...

Possible influences of exercise-intensity-dependent increases in non-cortical hemodynamic variables on NIRS-based neuroimaging analysis during cognitive tasks: Technical note.

Journal of exercise nutrition & biochemistry

Byun K, Hyodo K, Suwabe K, Kujach S, Kato M, Soya H.
PMID: 25671198
J Exerc Nutrition Biochem. 2014 Dec;18(4):327-32. doi: 10.5717/jenb.2014.18.4.327. Epub 2014 Nov 27.

PURPOSE: Functional near-infrared spectroscopy (fNIRS) provides functional imaging of cortical activations by measuring regional oxy- and deoxy-hemoglobin (Hb) changes in the forehead during a cognitive task. There are, however, potential problems regarding NIRS signal contamination by non-cortical hemodynamic (NCH)...

Effects of Sb Content (x) on (Bi(1-x)Sb(x))2Te3 Thermoelectric Thin Film Deposited by Effusion Cell Evaporator.

Journal of nanoscience and nanotechnology

Yong H, Na S, Gang JG, Jeon SJ, Hyun S, Lee HJ.
PMID: 26726497
J Nanosci Nanotechnol. 2015 Oct;15(10):8251-6. doi: 10.1166/jnn.2015.11439.

This paper investigates the effects of the Sb content (x) on (Bi(1-x)Sb(x))2Te3 thermoelectric films with x changing widely from 0 (Sb2Te3) to 1 (Bi2Te3). First, the XRD analysis discloses that with the Sb content (x) increasing, the phase changed...

Nanospherical solid electrolyte interface layer formation in binder-free carbon nanotube aerogel/Si nanohybrids to provide lithium-ion battery anodes with a long-cycle life and high capacity.

Nanoscale

Shim HC, Kim I, Woo CS, Lee HJ, Hyun S.
PMID: 28327775
Nanoscale. 2017 Apr 06;9(14):4713-4720. doi: 10.1039/c7nr00965h.

Silicon anodes for lithium ion batteries (LiBs) have been attracting considerable attention due to a theoretical capacity up to about 10 times higher than that of conventional graphite. However, huge volume expansion during the cycle causes cracks in the...

A Superamphiphobic Sponge with Mechanical Durability and a Self-Cleaning Effect.

Scientific reports

Kim D, Im H, Kwak MJ, Byun E, Im SG, Choi YK.
PMID: 27435167
Sci Rep. 2016 Jul 20;6:29993. doi: 10.1038/srep29993.

A robust superamphiphobic sponge (SA-sponge) is proposed by using a single initiated chemical vapor deposition (i-CVD) process. Poly(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl methacrylate) (PFDMA) is deposited on a commercial sponge by the polymerization of fluoroalkyl acrylates during the i-CVD process. This PFDMA is...

Hedgehog signaling influences gender-specific response of liver to radiation in mice.

Hepatology international

Wang S, Lee K, Hyun J, Lee Y, Kim Y, Jung Y.
PMID: 26202036
Hepatol Int. 2013 Oct;7(4):1065-74. doi: 10.1007/s12072-013-9461-0. Epub 2013 Jul 27.

BACKGROUND: It is unclear why the response to radiation in the female liver is different from that of the male liver. Hedgehog (Hh) that remains latent in healthy adult livers is activated in the injured liver and promotes the...

Ultrasound contrast-enhanced study as an imaging biomarker for anti-cancer drug treatment: preliminary study with paclitaxel in a xenograft mouse tumor model (secondary publication).

Ultrasonography (Seoul, Korea)

Lee HJ, Hwang SI, Byun J, Kong HY, Jung HS, Kang M.
PMID: 28290184
Ultrasonography. 2017 Oct;36(4):370-377. doi: 10.14366/usg.17015. Epub 2017 Feb 14.

PURPOSE: The purpose of this study was to assess tumor angiogenesis using contrast-enhanced ultrasonography (CEUS) of human prostate cancer cells (PC3) that were implanted in mice before and after paclitaxel injection.METHODS: Twelve mice were injected with human PC3. The...

Showing 1 to 12 of 1143 entries