2017 Fiscal Year Final Research Report
Electrochemical control of the number of dopant atoms
Project/Area Number |
16K13689
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Thin film/Surface and interfacial physical properties
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Research Institution | Waseda University |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Keywords | ドーパント / 電気化学ポテンシャル |
Outline of Final Research Achievements |
In order to develop a technique that can control the number of dopant atoms in a medium such as one by one, we studied the method based on the electrochemical potential. Silver sulfide nanodots were used as model systems for removing/dissolving dopant Ag atoms from/into the nanodots. By applying an electric field in the silver sulfide nanodots by a scanning tunneling microscope, we succeeded in controlled removal/dissolution of Ag dopant atoms from/into the silver sulfide nanodots. The similar control was also achieved using Ag-doped Ta2O5 nanodots. Measurement of a change in resistance due to the removal/dissolution using silver sulfide nanodots revealed that the developed technique can control the resistivity of a medium.
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Free Research Field |
表面物理学、ナノサイエンス、ナノデバイス
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