Search Results - "Takao, Yoshinori"

Modifications of plasma density profile and thrust by neutral injection in a helicon plasma thruster by Takahashi, Kazunori, Takao, Yoshinori, Ando, Akira

“…Argon propellant is introduced from the upstream and downstream sides of a high power helicon plasma thruster. The plasma density profile and the imparted…”
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Neutral-depletion-induced axially asymmetric density in a helicon source and imparted thrust by Takahashi, Kazunori, Takao, Yoshinori, Ando, Akira

“…The high plasma density downstream of the source is observed to be sustained only for a few hundreds of microsecond at the initial phase of the discharge, when…”
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Thrust imparted by a stepped-diameter magnetic nozzle rf plasma thruster by Takahashi, Kazunori, Takao, Yoshinori, Ando, Akira

“…A stepped-diameter source tube is employed on a magnetic nozzle radiofrequency plasma thruster, where the magnetic field lines intersecting the wall near the…”
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High-performance planar-type electron source based on a graphene-oxide-semiconductor structure by Murakami, Katsuhisa, Miyaji, Joji, Furuya, Ryo, Adachi, Manabu, Nagao, Masayoshi, Neo, Yoichiro, Takao, Yoshinori, Yamada, Yoichi, Sasaki, Masahiro, Mimura, Hidenori

“…A graphene-oxide-semiconductor (GOS) planar-type electron source was fabricated by direct synthesis of graphene on an oxide layer via low-pressure chemical…”
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Low-power-consumption, high-current-density, and propellantless cathode using graphene-oxide-semiconductor structure array by Furuya, Ryo, Takao, Yoshinori, Nagao, Masayoshi, Murakami, Katsuhisa

“…Graphene-oxide-semiconductor (GOS) planar-type electron sources—which consist of a graphene electrode layer, a thin SiO2 insulator, and a Si substrate—can be…”
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Uniform needle-emitter arrays for ionic liquid electrospray thrusters with precise thrust control by Tachibana, Fumiya, Tsuchiya, Toshiyuki, Takao, Yoshinori

“…Abstract The development of ionic liquid electrospray thrusters with highly precise needle-emitter arrays is reported. Micro-electro-mechanical systems process…”
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Microfabricated emitter array for an ionic liquid electrospray thruster by Nakagawa, Kaito, Tsuchiya, Toshiyuki, Takao, Yoshinori

“…We have fabricated needle-shaped emitters on a Si wafer by a MEMS process, and measured the voltage-current characteristics and the frequency dependence of a…”
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Oxidation Resistance Improvement of Graphene-Oxide-Semiconductor Planar-Type Electron Sources Using h‑BN as an Oxygen-Resistant, Electron-Transmissive Coating by Matsumoto, Naoyuki, Takao, Yoshinori, Nagao, Masayoshi, Murakami, Katsuhisa

“…Graphene–oxide–semiconductor (GOS) planar-type electron emission devices with a hexagonal boron nitride (h-BN) protective layer have demonstrated improved…”
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Surface smoothing during plasma etching of Si in Cl2 by Nakazaki, Nobuya, Matsumoto, Haruka, Tsuda, Hirotaka, Takao, Yoshinori, Eriguchi, Koji, Ono, Kouichi

“…Effects of initial roughness on the evolution of plasma-induced surface roughness have been investigated during Si etching in inductively coupled Cl2 plasmas,…”
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Development of a momentum vector measurement instrument in steady-state plasmas by Takahashi, Kazunori, Sugawara, Takeharu, Akahoshi, Hikaru, Takao, Yoshinori, Ando, Akira

“…Momentum vector measurement instrument yielding individual and simultaneous identification of local fluxes of momentum components in two different directions,…”
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7. Inspection of Hepatocellular Carcinoma 5: Angiography by Takao, Yoshinori

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Fabrication of nano-capillary emitter arrays for ionic liquid electrospray thrusters by Suzuki, Kanta, Nagao, Masayoshi, Liu, Yongxun, Murakami, Katsuhisa, Khumpuang, Sommawan, Hara, Shiro, Takao, Yoshinori

“…Abstract In this study, we fabricated nano-capillary emitter arrays for stable ion emission of ionic liquid electrospray thrusters, employing the fabrication…”
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Effects of straggling of incident ions on plasma-induced damage creation in "fin"-type field-effect transistors by Eriguchi, Koji, Matsuda, Asahiko, Takao, Yoshinori, Ono, Kouichi

“…We investigated the plasma-induced physical damage (PPD) mechanism in a field-effect transistor (FET) with a fin-type channel, called FinFET. Compared to PPD…”
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Vector Resolved Energy Fluxes and Collisional Energy Losses in Magnetic Nozzle Radiofrequency Plasma Thrusters by Emoto, Kazuma, Takahashi, Kazunori, Takao, Yoshinori

“…Energy losses in a magnetic nozzle radiofrequency plasma thruster are investigated to improve the thruster efficiency and are calculated from particle energy…”
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Fabrication of a high-density emitter array for electrospray thrusters using field emitter array process by Inoue, Naoki, Nagao, Masayoshi, Murakami, Katsuhisa, Khumpuang, Sommawan, Hara, Shiro, Takao, Yoshinori

“…To improve the thrust density of electrospray thrusters using ionic liquids as the propellant, we have fabricated a high-density emitter array utilizing the…”
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Modeling of ion-bombardment damage on Si surfaces for in-line analysis by Matsuda, Asahiko, Nakakubo, Yoshinori, Takao, Yoshinori, Eriguchi, Koji, Ono, Kouichi

“…Structures and mechanism of ion-bombardment damage on silicon wafers exposed to plasma were investigated comprehensively. By using molecular dynamics…”
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Evaluation technique for plasma-induced SiOC dielectric damage by capacitance-voltage hysteresis monitoring by Nishida, Kentaro, Okada, Yukimasa, Takao, Yoshinori, Eriguchi, Koji, Ono, Kouichi

“…We propose an electrical method, named capacitance-voltage (C-V) monitoring, for quantifying plasma-induced damage (PID) to interlayer dielectrics. By this…”
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Molecular dynamics simulations of silicon chloride ion incidence during Si etching in Cl-based plasmas by Nakazaki, Nobuya, Takao, Yoshinori, Eriguchi, Koji, Ono, Kouichi

“…Classical molecular dynamics (MD) simulations have been performed for SiClx+ (x = 0-4) ions incident on Si(100) surfaces, using an improved Stillinger-Weber…”
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Mechanism of Highly Efficient Electron Emission from a Graphene/Oxide/Semiconductor Structure by Murakami, Katsuhisa, Adachi, Manabu, Miyaji, Joji, Furuya, Ryo, Nagao, Masayoshi, Yamada, Yoichi, Neo, Yoichiro, Takao, Yoshinori, Sasaki, Masahiro, Mimura, Hidenori

“…Highly efficient electron emission of 48.5% was demonstrated by a graphene/oxide/semiconductor (GOS) structure. The main factors contributing to this…”
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Modeling and Simulation of Nanoscale Surface Rippling during Plasma Etching of Si under Oblique Ion Incidence by Tsuda, Hirotaka, Takao, Yoshinori, Eriguchi, Koji, Ono, Kouichi

“…A three-dimensional atomic-scale cellular model (ASCeM-3D) has been developed to reproduce the evolution of feature profiles on atomic or nanometer scale…”
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