Three-dimensional reconstructions of electrostatic potential distributions with 1.5-nm resolution using off-axis electron holography |
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Authors: | Tanigaki Toshiaki Aizawa Shinji Suzuki Takahiro Tonomura Akira |
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Affiliation: | Advanced Science Institute, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan. tanigaki-toshiaki@riken.jp |
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Abstract: | Three-dimensional (3D) reconstruction experiments were carried out by observing high-resolution 3D electrostatic potential distributions of Pt nanoparticles using off-axis electron holographic tomography. These Pt nanoparticles were mounted on the surfaces of amorphous silicon pillars. In order to realize high-resolution observation, we developed a mechanically stable 3D specimen holder with small specimen drifts and vibrations. From the 3D electrostatic potential distribution data of Pt nanoparticles (2.0?nm in diameter), we obtained the resolution of 1.5?nm. |
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