Toru Nakanishi's research while affiliated with Nagoya University and other places
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Publications (4)
Potassium-ion electrets, which mainly consist of amorphous silica and permanently store negative charge, are vital elements of small autonomous vibration-powered generators. However, negative charge decay is sometimes observed to cause issues for applications. In this study, we propose an improved guideline for the fabrication of potassium-ion elec...
A potassium-ion electret, which is a key element of vibration-powered microelectromechanical generators, is a material that permanently stores negative charge. However, the charge storing mechanism of a potassium-ion electret is still unclear. In this study, we theoretically study the atomic and electronic structures of amorphous SiO2 with and with...
A potassium-ion electret, which is a key element of vibration-powered microelectromechanical generators, can store negative charge almost permanently. However, the mechanism by which this negative charge is stored is still unclear. We theoretically study the atomic and electronic structures of amorphous silica (a-SiO2) with and without potassium at...
A potassium-ion electret, which is a key element of vibration-powered microelectromechanical generators, can store negative charge almost permanently. However, the mechanism by which this negative charge is stored is still unclear. We theoretically study the atomic and electronic structures of amorphous silica (a-SiO2) with and without potassium at...
Citations
... When polarizing the electret film in this work, on the other hand, potassium ions are displaced to the cathode side using the physics similar to that of anodic bonding as documented in detail elsewhere. (37)(38)(39) These two processes are substantially the same from an ion-migration viewpoint. We only need to figure out a total process so as not to mitigate the built-in potential of anodic bonding during the subsequent electret formation. ...
... When polarizing the electret film in this work, on the other hand, potassium ions are displaced to the cathode side using the physics similar to that of anodic bonding as documented in detail elsewhere. (37)(38)(39) These two processes are substantially the same from an ion-migration viewpoint. We only need to figure out a total process so as not to mitigate the built-in potential of anodic bonding during the subsequent electret formation. ...
