Search Results - "Lam, Chi Hang"

Harvesting the Vibration Energy of BiFeO3 Nanosheets for Hydrogen Evolution by You, Huilin, Wu, Zheng, Zhang, Luohong, Ying, Yiran, Liu, Yan, Fei, Linfeng, Chen, Xinxin, Jia, Yanmin, Wang, Yaojin, Wang, Feifei, Ju, Sheng, Qiao, Jinli, Lam, Chi‐Hang, Huang, Haitao

“…In this study, mechanical vibration is used for hydrogen generation and decomposition of dye molecules, with the help of BiFeO3 (BFO) square nanosheets. A high…”
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Spatial Heterogeneities in Structural Temperature Cause Kovacs' Expansion Gap Paradox in Aging of Glasses by Lulli, Matteo, Lee, Chun-Shing, Deng, Hai-Yao, Yip, Cho-Tung, Lam, Chi-Hang

“…Volume and enthalpy relaxation of glasses after a sudden temperature change has been extensively studied since Kovacs' seminal work. One observes an asymmetric…”
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Accelerated pyro-catalytic hydrogen production enabled by plasmonic local heating of Au on pyroelectric BaTiO3 nanoparticles by You, Huilin, Li, Siqi, Fan, Yulong, Guo, Xuyun, Lin, Zezhou, Ding, Ran, Cheng, Xin, Zhang, Hao, Lo, Tsz Woon Benedict, Hao, Jianhua, Zhu, Ye, Tam, Hwa-Yaw, Lei, Dangyuan, Lam, Chi-Hang, Huang, Haitao

“…The greatest challenge that limits the application of pyro-catalytic materials is the lack of highly frequent thermal cycling due to the enormous heat capacity…”
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Glass Transition Dynamics and Surface Layer Mobility in Unentangled Polystyrene Films by Yang, Zhaohui, Fujii, Yoshihisa, Lee, Fuk Kay, Lam, Chi-Hang, Tsui, Ophelia K.C

“…Most polymers solidify into a glassy amorphous state, accompanied by a rapid increase in the viscosity when cooled below the glass transition temperature (Tg)…”
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Direct Evidence of Void-Induced Structural Relaxations in Colloidal Glass Formers by Yip, Cho-Tung, Isobe, Masaharu, Chan, Chor-Hoi, Ren, Simiao, Wong, Kin-Ping, Huo, Qingxiao, Lee, Chun-Shing, Tsang, Yuen-Hong, Han, Yilong, Lam, Chi-Hang

“…Particle dynamics in supercooled liquids are often dominated by stringlike motions in which lines of particles perform activated hops cooperatively. The…”
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Viscosity and Surface-Promoted Slippage of Thin Polymer Films Supported by a Solid Substrate by Chen, Fei, Peng, Dongdong, Lam, Chi-Hang, Tsui, Ophelia K. C

“…Thermally activated flow dynamics of polystyrene films supported by silicon is studied for a wide range of film thickness (h 0) and molecular weights (M w). At…”
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The Surface Mobility of Glasses by Chen, Fei, Lam, Chi-Hang, Tsui, Ophelia K. C.

“…Surface diffusion on frozen polymer glasses is influenced by the surface dynamics of the glass itself. [Also see Report by Chai et al. ] The diffusion of atoms…”
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Glass Transition Dynamics and Surface Mobility of Entangled Polystyrene Films at Equilibrium by Yang, Zhaohui, Clough, Andrew, Lam, Chi-Hang, Tsui, Ophelia K. C

“…There has been continuing effort to understand the cause for the thickness dependence observed in the glass transition dynamics of polymer films. In a previous…”
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Surface Dynamics of Noisy Viscoelastic Films by Adiabatic Approximation by Lam, Chi -Hang, Tsui, Ophelia K. C, Peng, Dongdong

“…Surface dynamics is sometimes used to determine the rheological properties of soft materials. In typical data analyses, surface capillary waves are included…”
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Formation mechanism of bound states in graphene point contacts by Deng, Hai-Yao, Wakabayashi, Katsunori, Lam, Chi-Hang

“…Electronic localization in narrow graphene constrictions is theoretically studied, and it is found that long-lived (~1 ns) quasibound states (QBSs) can exist…”
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Ferromagnetic behavior of native point defects and vacancy-clusters in ZnO studied by first principle calculation by Luo, Cai-Qin, Zhu, Si-Cong, Lam, Chi-Hang, Ling, Francis Chi-Chung

“…The origin of room temperature ferromagnetism in undoped ZnO is still a question of debate. Experimental and theoretical findings are inconclusive as to the…”
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Mode-Matching Approach to Current Blocking Effect in Graphene Nanoribbons by Deng, Hai-Yao, Wakabayashi, Katsunori, Lam, Chi-Hang

“…Zigzag graphene nanoribbon (ZGNR) p--n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the…”
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Detector-induced backaction on the counting statistics of a double quantum dot by Li, Zeng-Zhao, Lam, Chi-Hang, Yu, Ting, You, J. Q.

“…Full counting statistics of electron transport is of fundamental importance for a deeper understanding of the underlying physical processes in quantum…”
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Cooling a nanomechanical resonator by a triple quantum dot by Li, Zeng-Zhao, Ouyang, Shi-Hua, Lam, Chi-Hang, You, J. Q.

“…We propose an approach for achieving ground-state cooling of a nanomechanical resonator (NAMR) capacitively coupled to a triple quantum dot (TQD). This TQD is…”
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Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes by Fei, Linfeng, Lei, Shuijin, Zhang, Wei-Bing, Lu, Wei, Lin, Ziyuan, Lam, Chi Hang, Chai, Yang, Wang, Yu

“…A microscopic understanding of the growth mechanism of two-dimensional materials is of particular importance for controllable synthesis of functional…”
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Negative differential resistance effect of blue phosphorene-graphene heterostructure device by Zhu, Si-Cong, Hu, Tie-Yi, Wu, Kai-Ming, Lam, Chi-Hang, Yao, Kai-Lun, Sun, Hua-Rui, Yip, Cho-Tung

“…We report on the electrical transport properties of new graphene/blue phosphorene heterostructure devices by density functional theory (DFT) within the…”
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Analytical expressions for the first passage time distribution and hit distribution in two and three dimensions by Clarkson, Alexander, Lam, Chi-Hang, Deng, Hai-Yao

“…The distribution of the time elapsed before a random variable reaches a threshold value for the first time, called the first passage time (FPT) distribution,…”
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Fragile Glasses Associated with a Dramatic Drop of Entropy under Supercooling by Lee, Chun-Shing, Lulli, Matteo, Zhang, Ling-Han, Deng, Hai-Yao, Lam, Chi-Hang

“…We perform kinetic Monte Carlo simulations of a distinguishable-particle lattice model of structural glasses with random particle interactions. By varying the…”
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On the origin of oxygen isotope exchange induced ferroelectricity in strontium titanate by Deng, Hai-Yao, Lam, Chi-Hang, Huang, H.T.

“…The quantum paraelectric strontium titanate can be made ferroelectric through replacing oxygen atoms with their heavy isotopes. Although suppressed quantum…”
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Competing roughening mechanisms in strained heteroepitaxy: a fast kinetic Monte Carlo study by Lam, Chi-Hang, Lee, Chun-Kin, Sander, Leonard M

“…We study the morphological evolution of strained heteroepitaxial films using kinetic Monte Carlo simulations in two dimensions. A novel Green's function…”
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