What is SNDM?
Principle of SNDM
Illustration of SNDM
Determination of the Polization
Measurement with AFM
Resolution of SNDM
Quantitative Measurement
Higher-Order Nonlinear Dielectric Microscopy
3-dimension-type SNDM
We study on original microscope systems for ferroelectric and the piezoelectric materials. These systems are indispensable for electrical communication devices.
This is an original technology invented by Prof. CHO. With this microscopy, distribution of ferroelectrics polarization directions can be observed. So far, the resolution is sub-nanometer.
Recently, FeRAMs attract much interest as non-volatile memories. We focus on the the next generation that requires a high density recording system.
 About the Ferroelectric Recording |
 Experimental results (single crystal) |
Experimental results (thin film) |