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2023-0127-01
Nanotechnology / Materials
posted：2023/01/27
海水のイオン導電性を利用した海中無線通信 ～海水管，漁業用いけす内のワイヤレスリアルタイムモニタリングが可能に～
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
collaborative researchers： 佐藤 弘隆 , 正留 康太 , 野本 玲於奈
2316
Nanotechnology / Materials
posted：2020/11/12
ダイヤモンド電界効果トランジスタ及びその製造方法
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
2020-0131-03
Nanotechnology / Materials
posted：2020/02/06
Development of new electric wireless seawater communication
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
● Electric communication utilizing conductivity of seawater● Transmitter : metal electrode ⇔ Receiver : transistor shape sensor operating in solutions● Apply square wave voltage to metal electrode &nb...
2039
Nanotechnology / Materials
posted：2018/04/18
第7017016号
第7017016号 ノーマリオフ動作ダイヤモンド電力素子及びこれを用いたインバータ
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
1843
Nanotechnology / Materials
posted：2017/03/06
特許第6205017号
特許第6205017号 トランジスタの製造方法及びセンサ素子
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
2016-0203-08
Nanotechnology / Materials
posted：2016/02/03
Boron-doped nanocrystalline diamond as a p-type transparent electrode
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
collaborative researchers：古閑 三靖
● Production method of the p-type conduction of high Boron-doped NCD with high transmittance and excellent electrical characteristic● Achieving two layers which High Boron-doped NCD was grown on top of undoped transparent NCD with quartz substrate
2016-0203-07
Nanotechnology / Materials
posted：2016/02/03
Vertically oriented graphite layers on diamond substrate
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
collaborative researchers：INABA, Masafumi Part-time Lecturer
● Implant ions to diamond (100) surface at high temperature ● Interstitial carbon atoms defuse to the diamond surface during the thermal treatment (1700oC, 2h) after implantation● High density vertically oriented graphite layer was formed on diamond surface
2016-0203-06
Nanotechnology / Materials
posted：2016/02/03
MOSFET on polycrystalline diamond
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
collaborative researchers：モフド シャムスル ナシリク ビン サムソル バハリン , INABA, Masafumi Part-time Lecturer , 北林 祐哉 , 柴田 将暢
● We developed high breakdown voltage MOSFET with polycrystalline black diamond ● The device exhibits perfect modulation and good device characteristic pinch off and saturation region● High voltage breakdown of 1824 V by black polycrystalline diamond
1736
Manufacturing Technology
posted：2015/11/03
2017-45897
2017-45897 多結晶ダイヤモンド上のパワーMOSFET（ダイヤモンド電界効果トランジスタ及びその製造方法）
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
◆多結晶ダイヤモンド（黒い）上にMOSFETを作製 ◆顕著な変調・良好なデバイス特性◆逆阻止耐圧1800Vを達成
2014-0122-05
Nanotechnology / Materials
posted：2014/01/23
ダイヤモンド半導体を用いた高信頼性電力素子
KAWARADA, Hiroshi Professor (Faculty of Science and Engineering School of Fundamental Science and Engineering)
・550℃の大気中でも導電性が確保され、絶縁性が向上した保護膜の製造方法・表面を水素化したダイヤモンド基板上に２層の保護膜を形成することで実現
