Výsledky vyhledávání - "Yia-chung Chang"

Akademický článek

Probing the strength of light–matter interaction in semiconductor microcavities by using resonant-mode shifts in temperature-dependent photoluminescence spectra

Autor: Sheng-Chan Wu, Chung-Xian Yang, Jer-Shing Huang, Yia-Chung Chang, Ching-Hang Chien, Hsu-Cheng Hsu

Publikováno v: APL Materials, Vol 11, Iss 8, Pp 081102-081102-6 (2023)

The Rabi-splitting energy represents the strength of light–matter interaction. This quantity is a good benchmark for evaluating the performance of light-modulation devices. Herein, we adopt ZnO microrods as microcavities for whispering gallery mode

Externí odkaz: https://doaj.org/article/95e25436fefb448daaa5f18e3a08f1b9

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Akademický článek

Exciton-polaron Rydberg states in monolayer MoSe2 and WSe2

Autor: Erfu Liu, Jeremiah van Baren, Zhengguang Lu, Takashi Taniguchi, Kenji Watanabe, Dmitry Smirnov, Yia-Chung Chang, Chun Hung Lui

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)

An exciton polaron is a quasiparticle composed of an exciton dressed with an electron-hole cloud, and this concept has been used to explain the ground excitonic states in charged monolayer transition metal dichalcogenides. Here the authors present ex

Externí odkaz: https://doaj.org/article/9682d6a65df94961a336847086a00c7b

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Akademický článek

Semi-Empirical Pseudopotential Method for Graphene and Graphene Nanoribbons

Autor: Raj Kumar Paudel, Chung-Yuan Ren, Yia-Chung Chang

Publikováno v: Nanomaterials, Vol 13, Iss 14, p 2066 (2023)

We implemented a semi-empirical pseudopotential (SEP) method for calculating the band structures of graphene and graphene nanoribbons. The basis functions adopted are two-dimensional plane waves multiplied by several B-spline functions along the perp

Externí odkaz: https://doaj.org/article/1ce6f14a87e14bd6aa69ae338879a8d5

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Akademický článek

Density Functional Theory for Buckyballs within Symmetrized Icosahedral Basis

Autor: Chung-Yuan Ren, Raj Kumar Paudel, Yia-Chung Chang

Publikováno v: Nanomaterials, Vol 13, Iss 13, p 1912 (2023)

We have developed a highly efficient computation method based on density functional theory (DFT) within a set of fully symmetrized basis functions for the C60 buckyball, which possesses the icosahedral (Ih) point-group symmetry with 120 symmetry oper

Externí odkaz: https://doaj.org/article/f9fd6e94f76a499682733627def21f00

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Akademický článek

Contact Effects on Thermoelectric Properties of Textured Graphene Nanoribbons

Autor: David M. T. Kuo, Yia-Chung Chang

Publikováno v: Nanomaterials, Vol 12, Iss 19, p 3357 (2022)

The transport and thermoelectric properties of finite textured graphene nanoribbons (t-GNRs) connected to electrodes with various coupling strengths are theoretically studied in the framework of the tight-binding model and Green’s function approach

Externí odkaz: https://doaj.org/article/113ee756a5664e5784f72278deef776c

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Akademický článek

Optimization of High-Q Coupled Nanobeam Cavity for Label-Free Sensing

Autor: Mohammad Tariq Yaseen, Yi-Chun Yang, Min-Hsiung Shih, Yia-Chung Chang

Publikováno v: Sensors, Vol 15, Iss 10, Pp 25868-25881 (2015)

We numerically and experimentally investigated the lateral coupling between photonic crystal (PhC) nanobeam (NB) cavities, pursuing high sensitivity and figure of merit (FOM) label-free biosensor. We numerically carried out 3D finite-difference time-

Externí odkaz: https://doaj.org/article/ef4e95d634c548b797d573a02aad7927

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Akademický článek

Valley-selective chiral phonon replicas of dark excitons and trions in monolayer WSe_{2}

Autor: Erfu Liu, Jeremiah van Baren, Takashi Taniguchi, Kenji Watanabe, Yia-Chung Chang, Chun Hung Lui

Publikováno v: Physical Review Research, Vol 1, Iss 3, p 032007 (2019)

We observe a set of three replica luminescent peaks at ∼21.4 meV below the dark exciton, and negative and positive dark trions (or exciton polarons) in monolayer WSe_{2}. The replica redshift energy matches the energy of the zone-center E^{′′}-

Externí odkaz: https://doaj.org/article/baf4d431daa9495da0ca40baead5e92c

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