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Institution

Chung Yuan Christian University

EducationTaoyuan City, Taiwan
About: Chung Yuan Christian University is a education organization based out in Taoyuan City, Taiwan. It is known for research contribution in the topics: Membrane & Fuzzy logic. The organization has 9819 authors who have published 11623 publications receiving 213139 citations. The organization is also known as: Tiong-gôan-tāi-ha̍k & CYCU.


Papers
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Journal ArticleDOI
TL;DR: This method provides an easy way to robustly fabricate arbitrary 3D desirable geometries with strongly stable reversible actuations and multifunctionalities, which greatly enlarges and benefits the future applications and manufacturing of LCE soft robots.
Abstract: Liquid-crystalline elastomers (LCEs) are excellent soft actuator materials for a wide range of applications, especially the blooming area of soft robotics. For entirely soft LCE robots to exhibit high dexterity and complicated performance, several components are typically required to be integrated together in one single robot body. Here, we show that seamless multicomponent/multimaterial three-dimensional (3D) LCE robots can be created via simultaneously welding and aligning LCE materials with different chemical compositions and physical properties without other additives such as tapes and glues (just like metal welding). Both welding and aligning of the LCE materials rely on thermal polymerization of preformed LCE films with reactive acrylate groups. This method provides an easy way to robustly fabricate arbitrary 3D desirable geometries with strongly stable reversible actuations and multifunctionalities, which greatly enlarges and benefits the future applications and manufacturing of LCE soft robots.

91 citations

Journal ArticleDOI
TL;DR: In this paper, a voltage-mode filter employing three current-feedback amplifiers, two grounded capacitors and three floating resistors is presented, which realises notch, low-pass and bandpass signals from the same configuration, no requirements for component matching conditions, orthogonal control of ωo and Q, and the use of two ground capacitors ideal for IC implementation.
Abstract: A voltage-mode filter employing three current-feedback amplifiers, two grounded capacitors and three floating resistors is presented. The proposed circuit offers the following advantages: realisation of notch, lowpass and bandpass signals from the same configuration, no requirements for component matching conditions, orthogonal control of ωo and Q, and the use of two grounded capacitors ideal for IC implementation, and low active and passive sensitivities and cascadability.

90 citations

Journal ArticleDOI
01 Apr 2017-Carbon
TL;DR: In this article, the authors performed first-principles calculations to study CO oxidation on a new carbon allotrope called penta-graphene (PG), and they concluded that PG is a potential, metal-free, and low-cost catalyst for low-temperature CO oxidation.

90 citations

Journal ArticleDOI
TL;DR: In this paper, the authors studied the effect of non-resonant contributions to tree-dominated and penguin-dominated three-body hadronic decays of heavy mesons.
Abstract: Direct $CP$ violation in charmless three-body hadronic decays of $B$ mesons is studied within the framework of a simple model based on the factorization approach. Three-body decays of heavy mesons receive both resonant and nonresonant contributions. Dominant nonresonant contributions to tree-dominated and penguin-dominated three-body decays arise from the $b\ensuremath{\rightarrow}u$ tree transition and $b\ensuremath{\rightarrow}s$ penguin transition, respectively. The former can be evaluated in the framework of heavy meson chiral perturbation theory with some modification, while the latter is governed by the matrix element of the scalar density $⟨{M}_{1}{M}_{2}|{\overline{q}}_{1}{q}_{2}|0⟩$. Resonant contributions to three-body decays are treated using the isobar model. Strong phases in this work reside in effective Wilson coefficients, propagators of resonances, and the matrix element of scalar density. In order to accommodate the branching fraction and $CP$ asymmetries observed in ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, the matrix element $⟨K\ensuremath{\pi}|\overline{s}q|0⟩$ should have an additional strong phase, which might arise from some sort of power corrections such as final-state interactions. We calculate inclusive and regional $CP$ asymmetries and find that nonresonant $CP$ violation is usually much larger than the resonant one and that the interference effect between resonant and nonresonant components is generally quite significant. If nonresonant contributions are turned off in the ${K}^{+}{K}^{\ensuremath{-}}{K}^{\ensuremath{-}}$ mode, the predicted $CP$ asymmetries due to resonances will be wrong in sign when confronted with experiment. In our study of ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, we find that ${\mathcal{A}}_{CP}({\ensuremath{\rho}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}})$ should be positive in order to account for $CP$ asymmetries observed in this decay. Indeed, both BABAR and LHCb measurements of ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$ indicate positive $CP$ asymmetry in the $m({\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})$ region peaked at ${m}_{\ensuremath{\rho}}$. On the other hand, all theories predict a large and negative $CP$ violation in ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}$. Therefore, the issue with $CP$ violation in ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}$ needs to be resolved. Measurements of $CP$-asymmetry Dalitz distributions put very stringent constraints on the theoretical models. We check the magnitude and the sign of $CP$ violation in some (large) invariant mass regions to test our model.

90 citations

Journal ArticleDOI
TL;DR: In this article, an ultrastable Eu3+-doped precursor luminescent glass frit without thermal quenching in the temperature range of 80 −480 K is developed to serve as an encapsulant that not only protects the embedded phosphor but also provides the red-emitting component for the PiG.
Abstract: A novel route toward tunable multicolor materials through phosphor-in-glass (PiG) technology is proposed in this work. Before that, an ultrastable Eu3+-doped precursor luminescent glass frit without thermal quenching in the temperature range of 80–480 K is developed to serve as an encapsulant that not only protects the embedded phosphor but also provides the red-emitting component for the PiG. By adjusting the mass ratio of Sr4Al14O25:Eu2+ phosphor to glass frit, a series of tunable multicolor Eu3+-doped PiG is obtained and exhibits a good resistance to the harsh conditions. Meanwhile, the luminescent color of Eu3+-doped PiG can be modified by changing the excitation wavelength or ambient temperature. Finally, corresponding Eu3+-doped PiG encapsulated high-power light-emitting diodes are further fabricated, especially the warm white-light-emitting diodes (WLEDs), showing good color stability under different drive currents and with different periods of operating time. All these results indicate that Eu3+-doped PiG is a potential color converter applied in the high-power warm-WLEDs and the route above opens up a facile and potential approach to obtain multicolor materials.

90 citations


Authors

Showing all 9844 results

NameH-indexPapersCitations
Simon Lin12675469084
Xiaodong Li104130049024
Yu Wang92168747472
Leaf Huang9235025867
Duu-Jong Lee9197937292
Yen Wei8564925805
Ru-Shi Liu8273826699
Kazuhiko Ishihara7771324795
Gwo-Hshiung Tzeng7746526807
Huan-Tsung Chang7640521476
Hari M. Srivastava76112642635
Jianhua Yang7455427839
Yen Wei6830917527
Hsisheng Teng6721314408
Kevin C.-W. Wu6627815193
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202315
202271
2021590
2020633
2019569
2018514