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Your search keyword '"Yang, Jiwoo"' showing total 11 results
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11 results on '"Yang, Jiwoo"'

1. Charged-impurity free printing-based diffusion doping in molybdenum disulfide field-effect transistors

Author

Jeong, Inho, Yang, Jiwoo, Jang, Juntae, Cho, Daeheum, Kwon, Deok-Hwang, Kim, Jae-Keun, Lee, Takhee, Cho, Kyungjune, and Chung, Seungjun

Subjects
Physics - Applied Physics
Abstract

In practical electronic applications, where doping is crucial to exploit large-area two-dimensional (2D) semiconductors, surface charge transfer doping (SCTD) has emerged as a promising strategy to tailor their electrical characteristics. However, impurity scattering caused by resultant ionized dopants, after donating or withdrawing carriers, hinders transport in 2D semiconductor layers, limiting the carrier mobility. Here, we propose a diffusion doping method for chemical vapor deposition (CVD) grown molybdenum disulfide that avoids interference from charged impurities. Selectively inkjet-printed dopants were introduced only on the contact region, allowing excessively donated electrons to diffuse to the channel layer due to the electron density difference. Therefore, diffusion-doped molybdenum disulfide FETs do not have undesirable charged impurities on the channel, exhibiting over two-fold higher field-effect mobility compared with conventional direct-doped ones. Our study paves the way for a new doping strategy that simultaneously suppresses charged impurity scattering and facilitates the tailoring of the SCTD effect.

Published
2024

4. sj-docx-1-taw-10.1177_20420986221129335 – Supplemental material for Angiotensin-converting enzyme inhibitors or angiotensin receptor blockers and cancer risk: an updated meta-analysis of observational studies

Author

Shin, Kayeong, Yang, Jiwoo, Yu, Yeuni, Son, Eunjeong, Kim, Kihun, and Kim, Yun Hak

Subjects
FOS: Clinical medicine, 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified, 111299 Oncology and Carcinogenesis not elsewhere classified
Abstract

Supplemental material, sj-docx-1-taw-10.1177_20420986221129335 for Angiotensin-converting enzyme inhibitors or angiotensin receptor blockers and cancer risk: an updated meta-analysis of observational studies by Kayeong Shin, Jiwoo Yang, Yeuni Yu, Eunjeong Son, Kihun Kim and Yun Hak Kim in Therapeutic Advances in Drug Safety

Published
2022
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11. High prevalence of extended-spectrum beta-lactamases and plasmid-mediated AmpC beta-lactamases in Enterobacteriaceae isolated from long-term care facilities in Korea.

Author

Yoo JS, Byeon J, Yang J, Yoo JI, Chung GT, and Lee YS

Subjects
Anti-Bacterial Agents pharmacology, Bacterial Proteins classification, Bacterial Proteins genetics, Cross Infection microbiology, DNA Primers genetics, DNA, Bacterial genetics, Escherichia coli drug effects, Escherichia coli isolation & purification, Humans, Klebsiella pneumoniae drug effects, Klebsiella pneumoniae isolation & purification, Long-Term Care, Microbial Sensitivity Tests, Polymerase Chain Reaction methods, Prevalence, Republic of Korea, beta-Lactamases classification, beta-Lactamases genetics, Bacterial Proteins biosynthesis, Escherichia coli enzymology, Escherichia coli Infections microbiology, Klebsiella Infections microbiology, Klebsiella pneumoniae enzymology, beta-Lactamases biosynthesis
Abstract

The aim of this study was to investigate for the first time the prevalence and types of extended-spectrum beta-lactamase (ESBL) and plasmid-mediated AmpC beta-lactamase (PABL) in Enterobacteriaceae in Korean long-term care facilities (LTCFs). ESBL rates were 45.3% (72/159) in Escherichia coli and 42.7% (50/117) in Klebsiella pneumoniae. In E. coli, CTX-M-28, the most prevalent ESBLs, was identified for the first time in Korea in 44 isolates. In K. pneumoniae, SHV-12 was found in 27 isolates (52.9% of ESBLs), among which 25 isolates also contained SHV-11. Twenty-seven isolates had SHV and CTX-M beta-lactamase simultaneously. PABL genes were detected in 39.3% (46/117) of K. pneumoniae and 3.1% (5/159) E. coli. In E. coli, DHA-1(3), CMY-2(1), and CMY-6(1) were detected, whereas in K. pneumoniae, only DHA-1 was detected. Among the PABL-producing organisms, 80.0% (E. coli) and 52.2% (K. pneumoniae) simultaneously produced ESBLs. In conclusion, LTCF residents in Korea have a very high prevalence of E. coli and K. pneumoniae producing ESBLs, PABLs, or both, and the genotypes of ESBL and PABL were identical with those found in general hospitals.

Published
2010
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