User profiles for H. Choi

Seung Hong Choi

- Verified email at snuh.org - Cited by 21511

Hyouk Ryeol Choi

- Verified email at skku.edu - Cited by 13833

Hyoung Joon Choi

- Verified email at yonsei.ac.kr - Cited by 13035

Metal-free catalysts for oxygen reduction reaction

L Dai, Y Xue, L Qu, HJ Choi, JB Baek - Chemical reviews, 2015 - ACS Publications
… Durable performance was observed for nearly 700 h in a H 2 –air fuel cell operated at a
constant voltage of 0.4 V. Wu and co-workers further demonstrated that M–N–C catalysts are rich …

Controlled growth of ZnO nanowires and their optical properties

…, N Morris, J Pham, R He, HJ Choi - Advanced functional …, 2002 - Wiley Online Library
This article surveys recent developments in the rational synthesis of single‐crystalline zinc
oxide nanowires and their unique optical properties. The growth of ZnO nanowires was …

The 2019 American College of Rheumatology/European league against rheumatism classification criteria for IgG4‐related disease

ZS Wallace, RP Naden, S Chari, H Choi… - Arthritis & …, 2020 - Wiley Online Library
Objective IgG4‐related disease (IgG4‐ RD ) can cause fibroinflammatory lesions in nearly
any organ. Correlation among clinical, serologic, radiologic, and pathologic data is required …

The origin of the anomalous superconducting properties of MgB2

HJ Choi, D Roundy, H Sun, ML Cohen, SG Louie - Nature, 2002 - nature.com
Magnesium diboride 1 differs from ordinary metallic superconductors in several important
ways, including the failure of conventional models 2 to predict accurately its unusually high …

Single-crystal gallium nitride nanotubes

J Goldberger, R He, Y Zhang, S Lee, H Yan, HJ Choi… - Nature, 2003 - nature.com
… After the GaN deposition, the samples were treated at 600 C with 10% H 2 in argon to … The
other approach is to use thermal reduction at high temperatures (for example, 600 C in H 2 ). …

Highly conductive, printable and stretchable composite films of carbon nanotubes and silver

KY Chun, Y Oh, J Rho, JH Ahn, YJ Kim, HR Choi… - Nature …, 2010 - nature.com
… The bottom electrodes of the LEDs were attached to the Ag–MWNT film by thermal annealing
(150 C for 1 h). The top electrodes of the LEDs were connected to gold wires. A gold wire, …

Estimates of the prevalence of arthritis and other rheumatic conditions in the United States: Part II

…, CG Helmick, LM Arnold, H Choi… - Arthritis & …, 2008 - Wiley Online Library
Objective To provide a single source for the best available estimates of the US prevalence of
and number of individuals affected by osteoarthritis, polymyalgia rheumatica and giant cell …

Predicting the present with Google Trends

H Choi, H Varian - Economic record, 2012 - Wiley Online Library
… version of our earlier working papers, Choi and Varian (2009a,b), which includes other
more sophisticated models. … In economics, Choi and Varian (2009a,b) described how to …

Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

M Jeong, IW Choi, EM Go, Y Cho, M Kim, B Lee… - Science, 2020 - science.org
… The presence of fluorine atoms induces the creation of kinetic barriers that slow the intrusion
of O 2 and H 2 O. The increased hydrophobicity generated by using fluorinated Spiro-type …

A graphene-based electrochemical device with thermoresponsive microneedles for diabetes monitoring and therapy

…, HJ Choi, TD Chung, N Lu, T Hyeon, SH Choi… - Nature …, 2016 - nature.com
h, Bode plots of the electrodes in PBS after electrodeposition of PEDOT. i, CV plots of the
electrodes in PBS after electrodeposition of PB (scan rate: 0.1 V s –1 with a commercial Ag/…