Publications

A03 WATANABE, Shinji |Proposed Research Projects (2016-2017)

Paper | Original Paper

2017

*Shinji Watanabe, Toshio Ando,
High-speed XYZ-nanopositioner for scanning ion conductance microscopy,
Applied Physics Letters 111, 113606/1-4 (2017).

[Summary] We describe a tip-scan-type high-speed XYZ-nanopositioner designed for scanning ion conductance microscopy (SICM), with a special care being devoted to the way of nanopipette holding. The nanopipette probe is mounted in the center of a hollow piezoactuator, both ends of which are attached to identical diaphragm flexures, for Z-positioning. This design minimizes the generation of undesirable mechanical vibrations. Mechanical amplification is used to increase the XY-travel range of the nanopositioner. The first resonance frequencies of the nanopositioner are measured as ~100kHz and ~2.3kHz for the Z- and XY-displacements, respectively. The travel ranges are ~6um and ~34lm for Z and XY, respectively. When this nanopositioner is used for hoppingmode imaging of SICM with a ~10-nm radius tip, the vertical tip velocity can be increased to 400nm/ms; hence, the one-pixel acquisition time can be minimized to ~1ms.



International Conferences

2018

Poster

Shinji Watanabe,
High-speed Ion Conductance Microscope,
The 1st NanoLSI International Symposium (Feb. 21-22, 2018), Tokyo, Japan.


2017

Oral (contributed)

Shinji Watanabe,
Improvements in Fundamental Performance of Scanning Ion Conductance Microscope for Visualizing Morphological Changes in Biological Samples with Nanoscale,
ICSPM25 (25th International Colloquium on Scanning Probe Microscopy) (Dec. 7-9, 2017), Atagawa, Japan.

Poster

Shinji Watanabe,
Development of High-Speed Ion Conductance Microscopy for Visualizing Morphological Changes in Biological Samples with Nanoscale Resolution,
International Symposium on Fluctuation and Structure out of Equilibrium 2017 (Nov. 20-23, 2017), Sendai, Japan.

Oral (contributed)

Shinji Watanabe,
High-speed ion conductance microscopy for visualizing morphological changes in biological samples with nanoscale resolution,
International Symposium on Atomic Force Microscopy at Solid-Liquid Interfaces (Nov. 8-9, 2017), Kanazawa, Japan.


2016

Invited

*Shinji Watanabe, and Toshio Ando,
High-speed ion conductance microscopy for studying biological samples,
ICSPM24 (Dec. 14-16, 2016), Honolulu, USA.

Oral (contributed)

*Shinji Watanabe, Noriyuki Kodera, Takayuki Uchihashi, Hiroki Konno, and Toshio Ando,
Development of high-speed scanning ion conductance microscopy for visualizing biological samples in action,
4th Kanazawa Bio-AFM Workshop 2016 (Oct. 3-6, 2016), Kanazawa, Japan.

Invited

*Toshio Ando, Noriyuki Kodera, Takayuki Uchihashi, Shinji Watanabe, Takamitsu Haruyama, and Hiroki Konno,
Functional extension of high-speed atomic force microscopy,
ISPM 2016 (Jun. 12-15, 2016), Grindelwald, Switzerland.

Grant-in-Aid for Scientific Research (KAKENHI) on Innovative Areas, MEXT, Japan
Synergy of Fluctuation and Structure : Quest for Universal Laws in Non-Equilibrium Systems