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您的检索式：作者名="Chaehyun Lim"
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| 1 | The first observation of Ni nanoparticle exsolution from YSZ and its application for dry reforming of methane显示文摘Ni nanocatalysts produced through exsolution have shown strong resistance to particle sintering and carbon coking in a beneficial dry reforming of methane(DRM)reaction utilizing greenhouse gases such as CH_(4)and CO_(2).However,most of the existing oxide supports for exsolution have been limited to perovskite oxide,while studies on fluorite support have been rarely conducted due to the limited solubility despite its excellent redox stability.Here we demonstrate that 3 mol%Ni can be successfully dissolved into the yttria-stabilized zirconia(YSZ)lattice and be further exsolved to the surface in a reducing atmosphere.The YSZ decorated with exsolved Ni nanoparticles shows enhanced catalytic activity for DRM reaction compared to the conventional cermet type of bulk Ni-YSZ.Moreover,the catalytic activity is extremely stable for about 300 h without significant degradation.Overall results suggest that the YSZ-based fluorite structure can be utilized as one of the support oxides for exsolution. | Sangwook Joo Chaehyun Lim Ohhun Kwon Linjuan Zhang Jing Zhou Jian-Qiang Wang Hu Young Jeong Yong-wook Sin Sihyuk Choi Guntae Kim | 2021 | Materials Reports(Energy)2021，1，2： | 0 |
| 2 | Highly pixelated,untethered tactile interfaces for an ultra-flexible on-skin telehaptic system显示文摘Realizing highly immersive tactile interactions requires a skin-integrated,untethered,high-definition tactile transducer devices that can record and generate tactile stimuli.However,the rigid and bulky form factor,and insufficient resolution of existing actuators are hindering the reproduction of sophisticated tactile sensations and immersive user experiences.Here,we demonstrate an ultraflexible tactile interface with high spatial resolution of 1.8 mm for telehaptic communication on human skin.Dual mechanism sensors and sub-mm scale piezoceramic actuators are designed to record and generate the static and dynamic pressures in a wide frequency range(1 Hz to 1 kHz).Moreover,actuators are integrated on ultra-flexible substrate with chessboard pattern to minimize stress during mechanical deformations.Finally,remote transmissions of various tactile stimuli,such as shapes,textures,and vibration patterns were demonstrated by the telehaptic system with low latency(<1.55 ms)and high fidelity as proven by the shorttime Fourier-transform analysis. | Hanbit Jin Yunjeong Kim Wooseup Youm Yulim Min Saerom Seo Chaehyun Lim Chan-Hwa Hong Seyoung Kwon Gyeongseok Park Steve Park Hye Jin Kim | 2022 | npj Flexible Electronics2022，6，1： | 0 |
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