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25 results on '"Huang, Hao-Chun"'

2. Scaling Behaviors of a Polymer Ejected from a Cavity through a Small Pore

Author

Huang, Hao-Chun and Hsiao, Pai-Yi

Subjects
Condensed Matter - Soft Condensed Matter
Abstract

Langevin dynamics simulations are performed to investigate ejection dynamics of spherically confined flexible polymers through a pore. By varying the chain length $N$ and the initial volume fraction $\phi_0$ of the monomers, two scaling behaviors for the ejection velocity $v$ on the monomer number $m$ in the cavity are obtained: $v \sim m^{1.25}\phi_0^{1.25}/N^{1.6}$ for large $m$ and $v \sim m^{-1.4}$ as $m$ is small. A robust scaling theory is developed by dividing the process into the confined and the non-confined stages, and the dynamical equation is derived via the study of energy dissipation. After trimming the prior stage related to the escape of the head monomer across the pore, the evolution of $m$ is shown to be well described by the scaling theory. The ejection time exhibits two proper scaling behaviors: $N^{2/(3\nu)+y_1}\phi_0^{-2/(3\nu)}$ and $N^{2+y_2}$ under the large and small $\phi_0$- or $N$-conditions, respectively, where $y_1=1/3$, $y_2=1-\nu$, and $\nu$ is the Flory exponent., Comment: 5 pages, 5 figures, accepted for publication in PRL

Published
2019
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3. Efficient n-type Doping in Epitaxial Graphene through Strong Lateral Orbital Hybridization of Ti Adsorbate

Author

Chen, Jhih-Wei, Huang, Hao-Chun, Convertino, Domenica, Coletti, Camilla, Chang, Lo-Yueh, Shiu, Hung-Wei, Cheng, Cheng-Maw, Lin, Min-Fa, Heun, Stefan, Chien, Forest Shih-Sen, Chen, Yi-Chun, Chen, Chia-Hao, and Wu, Chung-Lin

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

In recent years, various doping methods for epitaxial graphene have been demonstrated through atom substitution and adsorption. Here we observe by angle-resolved photoemission spectroscopy (ARPES) a coupling-induced Dirac cone renormalization when depositing small amounts of Ti onto epitaxial graphene on SiC. We obtain a remarkably high doping efficiency and a readily tunable carrier velocity simply by changing the amount of deposited Ti. First-principles theoretical calculations show that a strong lateral (non-vertical) orbital coupling leads to an efficient doping of graphene by hybridizing the 2pz orbital of graphene and the 3d orbitals of the Ti adsorbate, which attached on graphene without creating any trap/scattering states. This Ti-induced hybridization is adsorbate-specific and has major consequences for efficient doping as well as applications towards adsorbate-induced modification of carrier transport in graphene., Comment: 24 pages, 4 figures

Published
2016
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4. Configuration- and concentration-dependent electronic properties of hydrogenated graphene

Author

Huang, Hao-Chun, Lin, Shih-Yang, Wu, Chung-Lin, and Lin, Ming-Fa

Subjects
Condensed Matter - Materials Science
Abstract

The electronic properties of hydrogenated graphenes are investigated with the first-principles calculations. Geometric structures, energy bands, charge distributions, and density of states (DOS) strongly depend on the different configurations and concentrations of hydrogen adatoms. Among three types of optimized periodical configurations, only in the zigzag systems the band gaps can be remarkably modulated by H-concentrations. There exist middle-gap semiconductors, narrow-gap semiconductors, and gapless systems. The band structures exhibit the rich features, including the destruction or recovery of the Dirac-cone structure, newly formed critical points, weakly dispersive bands, and (C,H)-related partially flat bands. The orbital-projected DOS are evidenced by the low-energy prominent peaks, delta-function-like peaks, discontinuous shoulders, and logarithmically divergent peaks. The DOS and spatial charge distributions clearly indicate that the critical bondings in C-C and C-H is responsible for the diversified properties.

Published
2015

12. Corrigendum: Alpha-Fetoprotein Measurement Benefits Hepatocellular Carcinoma Surveillance in Patients With Cirrhosis

Author

Chang, Te-Sheng, primary, Wu, Yu-Chih, additional, Tung, Shui-Yi, additional, Wei, Kuo-Liang, additional, Hsieh, Yung-Yu, additional, Huang, Hao-Chun, additional, Chen, Wei-Ming, additional, Shen, Chien-Heng, additional, Lu, Chang-Hsien, additional, Wu, Cheng-Shyong, additional, Tsai, Ying-Huang, additional, and Huang, Yen-Hua, additional

Published
2016
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13. Efficient n -type doping in epitaxial graphene through strong lateral orbital hybridization of Ti adsorbate

Author

Chen, Jhih-Wei, primary, Huang, Hao-Chun, additional, Convertino, Domenica, additional, Coletti, Camilla, additional, Chang, Lo-Yueh, additional, Shiu, Hung-Wei, additional, Cheng, Cheng-Maw, additional, Lin, Ming-Fa, additional, Heun, Stefan, additional, Chien, Forest Shih-Sen, additional, Chen, Yi-Chun, additional, Chen, Chia-Hao, additional, and Wu, Chung-Lin, additional

Published
2016
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24. Serum HCV RNA level is not associated with insulin resistance and metabolic syndrome in chronic hepatitis C patients with genotype 1 or 2 infection.

Author

Huang HC, Chuang CS, Hsieh YY, Chang TS, Wei KL, Shen CH, Wu CS, and Tung SY

Subjects
Adolescent, Adult, Aged, Aged, 80 and over, Alanine Transaminase blood, Aspartate Aminotransferases blood, Female, Genotype, Hepacivirus classification, Hepacivirus genetics, Humans, Male, Middle Aged, Prospective Studies, Hepacivirus isolation & purification, Hepatitis C, Chronic virology, Insulin Resistance, Metabolic Syndrome virology, RNA, Viral blood
Abstract

Background: Previous reports have indicated that insulin resistance (IR) is associated with chronic hepatits C virus (HCV) infection. However, the correlations between IR, metabolic syndrome (MS), and serum HCV RNA levels are still controversial. The aim of this study was to determine the relationships between IR, MS, and HCV RNA in patients with chronic genotype 1 or 2 HCV infection., Methods: One hundred and twenty subjects with chronic genotype 1 or 2 HCV infection with complete clinical data were prospectively enrolled. Baseline and laboratory data were collected and analyzed. IR was defined as a homeostatic model assessment- IR (HOMA-IR) score > 2.5., Results: Of the 120 patients, 47 (39.2%) had a HOMA-IR > 2.5, and 42 (35%) met the criteria for MS. IR was significantly associated with a high body mass index (p < 0.0001), high waist circumference (p < 0.0001) and high triglyceride level (p = 0.025). IR was an independent predictor of MS. However, in multivariate linear regression analysis, the serum HCV RNA level was not significantly different in chronic hepatitis C patients with or without IR (p = 0.761), and with or without MS (p = 0.292)., Conclusions: IR and MS are not uncommon in patients with chronic hepatitis C. The serum HCV RNA level is not associated with the presence of IR or MS in chronic hepatitis C patients with genotype 1 or 2 infection. The impact of hepatitis C virus on IR is not dose responsive.

Published
2011

25. Transnasal butorphanol for pain relief after uvulopalatopharyngoplasty - a hospital-based,randomized study.

Author

Huang HC, Lee LA, Fang TJ, Li HY, Lo CC, and Wu JH

Subjects
Administration, Intranasal, Adult, Butorphanol adverse effects, Female, Humans, Male, Mefenamic Acid administration & dosage, Meperidine administration & dosage, Middle Aged, Pain Measurement, Prospective Studies, Butorphanol administration & dosage, Pain, Postoperative drug therapy, Palate, Soft surgery, Pharynx surgery, Sleep Apnea, Obstructive surgery, Uvula surgery
Abstract

Background: Nasal spray of analgesic is a novel administration for postoperative pain control. In this study, we assessed the efficacy of transnasal butorphanol (TB) for pain relief following uvulopalatopharyngoplasty (UPPP) in obstructive sleep apnea (OSA) patients, and compared pain alleviation effect to oral mefenamic acid and intramuscular meperidine (M> or =&M)., Methods: A prospective, randomized, open label study was conducted in a tertiary care sleep center. Twelve OSA patients with full consciousness and at least moderate oropharyngeal pain (pain visual analogue scale [VAS] > or = 4) after UPPP were recruited. They were randomized to receive TB (n = 7) and M&M (n = 5). Oropharyngeal pain was measured by a VAS and the Clinical Global Impression in Severity (CGI-S) and Improvement (CGI-I) at the 12th, 24th, and 72th hours postoperatively. Postoperative pain related morbidities (PRMs) and quality of life in bodily pain (QOL-BP) were also evaluated 72 hours postoperatively. Adverse events incurred by pain treatment were carefully monitored during patients' hospitalizations., Results: No major complication occurred throughout the study. Analysis of clinical measures revealed significantly improved VAS (p = 0.04), CGI-S (p = 0.03), and CGI-I (p = 0.02) in the TB group. However, no significant difference (p > 0.05) in the degree of pain relief was found between the two groups, as denoted by aforementioned three variables, PRMs, and QOL-BP., Conclusions: Administration of TB can significantly alleviate the wound pain after UPPP in OSA patients. This study also confirmed the safety of TB in patients undergoing oropharyngeal surgery.

Published
2009

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