Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Kanghyun Chu"'
Autor:
Shinhee Yun, Kyung Song, Kanghyun Chu, Soo-Yoon Hwang, Gi-Yeop Kim, Jeongdae Seo, Chang-Su Woo, Si-Young Choi, Chan-Ho Yang
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
Observation of a strain-gradient-induced piezoresponse at domain walls remains a challenge. Here, the authors find the piezoelectric response to be enhanced in the ferroelastic domain walls of centrosymmetric tungsten trioxide thin films due to a lar
Externí odkaz:
https://doaj.org/article/a40e15cd37e44a67b81b40e3e790dfb5
Autor:
Kwang-Eun Kim, Seuri Jeong, Kanghyun Chu, Jin Hong Lee, Gi-Yeop Kim, Fei Xue, Tae Yeong Koo, Long-Qing Chen, Si-Young Choi, Ramamoorthy Ramesh, Chan-Ho Yang
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-12 (2018)
Exploring topological textures in ferroelectrics facilitates the understanding and application of topological features in matter. Here the authors demonstrate the strain field induced evolution of topological vortices in nanoplatelets of rhombohedral
Externí odkaz:
https://doaj.org/article/7290f98d61364c70b8add692a417e246
Autor:
Gi-Yeop Kim, Kanghyun Chu, Kil-Dong Sung, Hak-Sung Lee, Sung-Dae Kim, Kyung Song, Taekjib Choi, Jaichan Lee, James P. Buban, Seog-Young Yoon, Kwang-Ho Kim, Chan-Ho Yang, Si-Young Choi
Publikováno v:
APL Materials, Vol 5, Iss 6, Pp 066104-066104-6 (2017)
The PbTiO3/SrTiO3 superlattice thin films with a low volume fraction of PbTiO3 have not attracted much interest because they are thought to exhibit only a paraelectric state. In this study, we focus on a superlattice thin film with thin PbTiO3 (PTO)
Externí odkaz:
https://doaj.org/article/8bd141177b0349738358532e723a3583
Autor:
Dae‐Sung Park, Aurora Diana Rata, Rasmus Tindal Dahm, Kanghyun Chu, Yulin Gan, Igor V. Maznichenko, Sergey Ostanin, Felix Trier, Hionsuck Baik, Woo Seok Choi, Chel‐Jong Choi, Young Heon Kim, Gregory J. Rees, Hafliði Pétur Gíslason, Paweł Adam Buczek, Ingrid Mertig, Mihai Adrian Ionescu, Arthur Ernst, Kathrin Dörr, Paul Muralt, Nini Pryds
Publikováno v:
Advanced Materials.
Publikováno v:
Journal of the Korean Physical Society. 80:1035-1041
Publikováno v:
npj Quantum Materials, Vol 4, Iss 1, Pp 1-9 (2019)
Topological defects have received much attention due to their stability against perturbations and potential applications in nonvolatile high-density memory. Topologically non-trivial textures can be compelled by constraints on boundary condition, geo
Autor:
Brahim Dkhil, Lukas M. Riemer, Dragan Damjanovic, Hana Uršič, Andrew J. Bell, Kanghyun Chu, Yang Li
Publikováno v:
Applied Physics Letters
Applied Physics Letters, American Institute of Physics, 2020, 117 (10), pp.102901. ⟨10.1063/5.0018243⟩
Applied Physics Letters, American Institute of Physics, 2020, 117 (10), pp.102901. ⟨10.1063/5.0018243⟩
Macroscopic polarity and its dynamic response to external electric fields and temperature in the nominally ergodic relaxor phase of pristine lead magnesium niobate crystals and ceramics, Pb(Mg1/3Nb2/3)O3 (PMN), were investigated. Dynamic pyroelectric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30c965b9d8acbb2cd354586b8f760b05
https://hal-centralesupelec.archives-ouvertes.fr/hal-03436235
https://hal-centralesupelec.archives-ouvertes.fr/hal-03436235
Autor:
Kyung Song, Si-Young Choi, Shinhee Yun, Jeongdae Seo, Soo-Yoon Hwang, Kanghyun Chu, Chan-Ho Yang, Gi-Yeop Kim, Chang-Su Woo
Publikováno v:
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
The emergence of a domain wall property that is forbidden by symmetry in bulk can offer unforeseen opportunities for nanoscale low-dimensional functionalities in ferroic materials. Here, we report that the piezoelectric response is greatly enhanced i
Autor:
Donghoon Kim, Sang Yeol Nam, Hyeon Han, Jucheol Park, Kanghyun Chu, Hyun M. Jang, Chan-Ho Yang, Seungyang Heo
Publikováno v:
ACS Applied Materials & Interfaces. 10:1846-1853
Ferroelectric photovoltaics (FPVs) are being extensively investigated by virtue of switchable photovoltaic responses and anomalously high photovoltages of ∼104 V. However, FPVs suffer from extremely low photocurrents due to their wide band gaps (Eg
Autor:
Kanghyun Chu, Chan-Ho Yang
Publikováno v:
The Review of scientific instruments. 89(12)
Piezoresponse force microscopy (PFM) is a widely used tool for ferroelectric domain imaging. Lateral PFM (LPFM) utilizes the torsional vibration mode of a probe cantilever; it can distinguish ferroelectric domains having different polarizations with