Zobrazeno 1 - 10
of 158
pro vyhledávání: '"OTA, Norio"'
Autor:
Ota, Norio
Astronomical near-infrared Diffuse-Interstellar-Bands (DIBs) were characterized by pure carbon Fullerene and Graphene molecules comparing with laboratory experiment and with Time-Dependent Density-Functional-Theory (TD-DFT) analysis. It is well known
Externí odkaz:
http://arxiv.org/abs/2405.00275
Autor:
Ota, Norio
This molecular orbital analysis predicts that pure carbon graphene molecules would play an important role on astronomically observed Diffuse Interstellar Bands (DIB), rather than fullerene. Laboratory experiments precisely coincided with observed DIB
Externí odkaz:
http://arxiv.org/abs/2312.13550
Autor:
Ota, Norio
This study theoretically predicts the specific Polycyclic Aromatic Hydrocarbon (PAH) molecules to reproduce both astronomically observed Infrared Bands (IR) and Diffuse Interstellar Bands (DIB). In our recent paper, we could reproduce IR by the hydro
Externí odkaz:
http://arxiv.org/abs/2310.06264
Autor:
Ota, Norio, Li, Aigen
Protoplanetary disk around a just born young star contains a lot of cosmic dust. especially polycyclic-aromatic-hydrocarbon (PAH), which would become basic component to create biological organics. This study classified many astronomically observed in
Externí odkaz:
http://arxiv.org/abs/2303.05645
Publikováno v:
Journal of the Magnetics Society of Japan, Volume 45 Issue 6 Pages 142-148 (2021)
Magnetism of fullerene C60 was studied by three methods of the density functional theory (DFT) calculation, laboratory experiment and astronomical observation. DFT revealed that the most stable spin state was non-magnetic one of Sz=0/2. This is contr
Externí odkaz:
http://arxiv.org/abs/2107.04725
Autor:
Ota, Norio, Nemes, Laszlo
Publikováno v:
J. Magn. Soc. Jpn. 45, 30 (2021)
Void defect is a possible origin of ferromagnetic like feature of pure carbon material. Applying density functional theory to void defect induced graphene nano ribbon (GNR), a detailed relationship between multiple spin state and structure change was
Externí odkaz:
http://arxiv.org/abs/2104.09740
Publikováno v:
J. Magn. Soc. Jpn. 45, 41 (2021)
Void-defect is a possible origin of ferromagnetic feature on pure carbon materials. In our previous paper, void-defect on graphene-nanoribbon show highly polarized spin configuration. In this paper, we studied cases for graphene molecules by quantum
Externí odkaz:
http://arxiv.org/abs/2104.09745
Void-defect induced magnetism of graphene molecule was recently reported in our previous paper of this series study. This paper investigated the case of hydrogenated graphene molecule, in chemical term, polycyclic aromatic hydrocarbon (PAH). Molecula
Externí odkaz:
http://arxiv.org/abs/2104.09747
It is well known since 2010 that fullerene C60 is widespread through the interstellar space. Also, it is well known that graphene is a source material for synthesizing fullerene. Here, we simply assume the occurrence of graphene in space. Infrared sp
Externí odkaz:
http://arxiv.org/abs/2007.03862
Autor:
Ota, Norio
It had been understood that astronomically observed infrared spectrum of carbon rich planetary nebula as like Tc 1 and Lin 49 comes from fullerene (C60). Also, it is well known that graphene is a raw material for synthesizing fullerene. This study se
Externí odkaz:
http://arxiv.org/abs/1904.10140