Yukio Sato, Ph. D. (Science)
Age: 37 (as of Apr. 1, 2016), Born in Fukuoka Prefecture, JAPAN.
Department of Materials Science and Engineering, Kyushu University
Room No. 638, West Zone Building 4, Kyushu University
744 Motooka, Nishi-ku, Fukuoka, 819-0395, JAPAN
||2002. 3. BS in Engineering, The University of Tokyo.|
2004. 3. MS in Science, Graduate School of Frontier Sciences,
The University of Tokyo.
2006. 9. Ph. D. in Science, Graduate School of Frontier Sciences, The University of Tokyo.
||2004. 4. JSPS Research Fellow (for PhD candidate) at the University of Tokyo (UT)|
2006.10. JSPS Research Fellow (for Postdoctoral researcher) in UT
2007. 4. JSPS Research Fellow (for Postdoctoral researcher) in Japan Fine Ceramics Center (JFCC)
2007. 4. Visiting Researcher, JFCC (concurrently)
2010. 4. Assistant Professor, Inst. of Eng. Innov., Graduate School of Eng., The University of Tokyo
2014. 4. Associate Professor, Dep. of Mat. Sci. and Eng., Graduate School of Eng., Kyushu University
||Ceramic Society of Japan, Japan Institute of Metal, The Physical Society of Japan, The Japanse Society of Microscopy, The Japan Society of Applied Physics, The American Ceramic Society|
||International advisory board, Applied Microscopy|
||Semiconducting ceramics, Ferroelectrics, Grain boundary/Interface, Electron Microscopy,|
Ultrasonic imaging devices are used in medical diagnosis. The movie shows the change of nanostructure in piezoelectric probe that is the major component of medical imaging devices in its working. Change of the nanostructure was observed for the first time by us with the use of in-situ transmission electron microscopy. This result provided an important insight to understand how does this imaging device work.
Crystalline solids usually expands when they are heated. However, there are some exceptions. Transmission electron microscopy images of such materials has revealed that nanoscale regions of smaller crystal volume are dispersed in that material, which is a reason that this material shrinks when they are heated.
A large number of devices are integrated in electrical circuit of cellphone. Varistor is one such devices, which protects the circuit from electrical surges emitted from humanbeing. However, mechanism that the electrical function arises had not well been understood. We have revealed microscopic origin of the electrical function in the atomic scale. The image on the right shows the atomic arragement of the device. Our theoretical calculations revealed that this peculiar atomic arrangement is a cause of the electrical function.
Further details on the researches will be uploaded here.
Major research archivement:
Selected journal papers:
"Monoclinic nanodomains in morphotropic phase boundary Pb(Mg1/3Nb2/3)O3 - PbTiO3"
Y. Sato et al., Applied Physics Letters, 104, 082905-1-4 (2014).
Real-Space Distribution of Local WO4 Ordering in Negative Thermal Expansive ZrW2O8"
Y. Sato et al., Journal of the American Chemical Society, 134, 13942-13945 (2012).
"Real-Time Direct Observations of Polarization Reversal in a Piezoelectric Crystal: Pb(Mg1/3Nb2/3)O3 - PbTiO3 Studied via In Situ Electrical Biasing Transmission Electron Microscopy"
Y. Sato et al., Physical Review Letters, 107, 187601-1-5 (2011).
"Atomic structures and electrical properties of ZnO grain boundaries"
Y. Sato et al., Journal of the American Ceramic Society, 90, 337-357 (2007). (Feature Article)
We received The Ross Coffin Purdy Award from the American Ceramic Society for this publication.
"Role of Pr segregation on acceptor state formation at ZnO grain boundaries"
Y. Sato et al., Physical Review Letters, 97, 106802-1-4 (2006).
Recent invited talks:
Y. Sato, Pacifichem 2015, Hawaii, USA, 2015. 12. 20.
Y. Sato, International Symposium on Korean Society of Electron Microscopy, Korea, 2015. 11. 12.
Y. Sato, IUMRS-ICAM 2015, Korea, 2015. 10. 28.
Y. Sato, EMSI-2015, India, 2015. 7. 10.
Y. Sato, EMN Ceramics Meeting, USA, 2015. 1. 28.
Y. Sato, Asian Meeting on Ferroelectricity and Asian Meeting on Electroceramics (AMF-AMEC) 2014, China, 2014. 10. 29.
Y. Sato, The 15th IUMRS-ICA (International Union of Materials Research Societies, International Conference in Asia), Japan, 2014. 8. 25.
Y. Sato, SPIE Photonics West 2014, USA, 2014. 2. 3.
Y. Sato et al., The 9th Korea-Japan Conference on Ferroelectrics, Korea, 2012. 8.10.
Y. Sato et al., Ross Coffin Purdy Award, The American Ceramic Society, 2008.10. 6.
Y. Sato et al., Graduate Student Gold Award, Materials Research Society, 2005.11.30.
Articles in newspaper and magazine：
セラミックス，「米国MRSシンポジウムにおいてGraduate Student Gold Award 受賞」，March, 2006.
日刊工業新聞，「セラミックス中の添加材、原子レベルで直接観察」，2006. 9. 4.
Here is the full list of research archievement.