Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Daesu, Lee"'
Autor:
Jeong Rae Kim, Jinhyuk Jang, Kyoung-June Go, Se Young Park, Chang Jae Roh, John Bonini, Jinkwon Kim, Han Gyeol Lee, Karin M. Rabe, Jong Seok Lee, Si-Young Choi, Tae Won Noh, Daesu Lee
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Previous studies are limited to modulate oxygen octahedral rotation angles within the same pattern, and engineering the pattern remains a challenge. Here, the authors demonstrate a designed nonequilibrium oxygen octahedral rotation pattern leads to r
Externí odkaz:
https://doaj.org/article/ad5be48573384242a0298f0fd289e95c
Autor:
Sung Min Park, Bo Wang, Tula Paudel, Se Young Park, Saikat Das, Jeong Rae Kim, Eun Kyo Ko, Han Gyeol Lee, Nahee Park, Lingling Tao, Dongseok Suh, Evgeny Y. Tsymbal, Long-Qing Chen, Tae Won Noh, Daesu Lee
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Manipulating the electric state of large band gap dielectrics without any damage is quite challenging. Here, the authors demonstrate by mechanically introducing strain gradients that large electric fields are generated via flexoelectric interactions,
Externí odkaz:
https://doaj.org/article/b5de0e79ebd545199c9e849966d7944f
Autor:
Huimin Qiao, Pin Zhao, Owoong Kwon, Ahrum Sohn, Fangping Zhuo, Dong‐Min Lee, Changhyo Sun, Daehee Seol, Daesu Lee, Sang‐Woo Kim, Yunseok Kim
Publikováno v:
Advanced Science, Vol 8, Iss 20, Pp n/a-n/a (2021)
Abstract The triboelectric effect is a ubiquitous phenomenon in which the surfaces of two materials are easily charged during the contact‐separation process. Despite the widespread consequences and applications, the charging mechanisms are not suff
Externí odkaz:
https://doaj.org/article/059b3afbfa9f4e0185ea3e88565a5063
Autor:
Saikat Das, Bo Wang, Tula R. Paudel, Sung Min Park, Evgeny Y. Tsymbal, Long-Qing Chen, Daesu Lee, Tae Won Noh
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Flexoelectricity exists in every dielectric material exposed to a strain gradient and is enhanced at the nanoscale. However, precisely determining flexoelectric coupling parameters at the nanoscale is challenging, but has been overcome here by measur
Externí odkaz:
https://doaj.org/article/37c0109bf1f0493c8f6983cf9b8b216f
Autor:
Daesu Lee
Publikováno v:
APL Materials, Vol 8, Iss 9, Pp 090901-090901-12 (2020)
Flexoelectricity describes the generation of electric polarization in response to inhomogeneous strain, i.e., strain gradient, in all dielectrics. Importantly, strain gradients are inversely scaled to the material dimension so that more prominent and
Externí odkaz:
https://doaj.org/article/3fe7cca338b6421daca53594632b72a9
Autor:
Daesu Lee
Publikováno v:
New Physics: Sae Mulli. 71:808-813
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be64bc373cf1de27877f6c21f56722f0
https://doi.org/10.3938/npsm.71.808
https://doi.org/10.3938/npsm.71.808
Autor:
Ji Hye Lee, Hong Joon Kim, Jiyong Yoon, Sanghyeon Kim, Jeong Rae Kim, Wei Peng, Se Young Park, Tae Won Noh, Daesu Lee
Publikováno v:
Physical Review Letters. 129
Flexoelectricity-based mechanical switching of ferroelectric polarization has recently emerged as a fascinating alternative to conventional polarization switching using electric fields. Here, we demonstrate hyperefficient mechanical switching of pola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f95c1ccdf530373e158ace5456197376
https://doi.org/10.1103/physrevlett.129.117601
https://doi.org/10.1103/physrevlett.129.117601
Autor:
Wei Peng, Se Young Park, Chang Jae Roh, Junsik Mun, Hwiin Ju, Jinkwon Kim, Eun Kyo Ko, Zhengguo Liang, Sungsoo Hahn, Jinfeng Zhang, Liang Si, Yong Jin Jo, Yongjoo Jo, Tae Heon Kim, Changyoung Kim, Lingfei Wang, Miyoung Kim, Jong Seok Lee, Tae Won Noh, Daesu lee
Electric polarization can only be well defined in insulators, not in metals, and there is no general scheme to induce and control bulk polarity in metals. Here, we circumvent this limitation by utilizing a pseudo-electric field generated by inhomogen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::919855fd7f3f3ae120c29778594798fd
https://doi.org/10.21203/rs.3.rs-1615545/v1
https://doi.org/10.21203/rs.3.rs-1615545/v1
Publikováno v:
Journal of Vacuum Science & Technology A. 40
SrTiO3 has many applications involving interfaces with other materials, but defects that affect the properties of SrTiO3 films can also play a significant role at its heterointerfaces and even at junctions with nonstoichiometric SrTiO3. Depth-resolve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad26a0f5544e7886d8ad43d0e1eaee94
https://doi.org/10.1116/6.0001782
https://doi.org/10.1116/6.0001782
Autor:
Jong Seok Lee, Tae Won Noh, Han Gyeol Lee, Chang Jae Roh, Se Young Park, Si-Young Choi, Kyoung June Go, John Bonini, Jinhyuk Jang, Jeong Rae Kim, Jinkwon Kim, Karin M. Rabe, Daesu Lee
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Nature Communications
Nature Communications
Nonequilibrium atomic structures can host exotic and technologically relevant properties in otherwise conventional materials. Oxygen octahedral rotation forms a fundamental atomic distortion in perovskite oxides, but only a few patterns are predomina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccf2c51ce22da062ac817ccdcb492f85
http://link.springer.com/article/10.1038/s41467-020-18741-w
http://link.springer.com/article/10.1038/s41467-020-18741-w