نتایج جستجو برای: oxidization

تعداد نتایج: 478  

Journal: :The Review of scientific instruments 2008
M D Nornberg H Ji J L Peterson J R Rhoads

We present an experiment designed to study magnetohydrodynamic effects in free surface channel flow. The wide aspect ratio channel (the width to height ratio is about 15) is completely enclosed in an inert atmosphere to prevent oxidization of the liquid metal. A custom-designed pump reduces entrainment of oxygen, which was found to be a problem with standard centrifugal and gear pumps. Laser Do...

2016
W. Q. Liu M. Y. Song N. J. Maltby S. P. Li J. G. Lin M. G. Samant S. S. P. Parkin P. Bencok Paul Steadman Alexey Dobrynin Y. B. Xu R. Zhang

The spin and orbital magnetic moments of the Fe3O4 epitaxial ultrathin film synthesized by plasma assisted simultaneous oxidization on MgO(100) have been studied with X-ray magnetic circular dichroism (XMCD). The ultrathin film retains a rather large total magnetic moment, i.e. (2.73±0.15)μB/f.u., which is ~ 70% of that for the bulk-like Fe3O4. A significant unquenched orbital moment up to (0.5...

2013
Jiaquan Xu Lianyi Chen Hongseok Choi Hiromi Konish Xiaochun Li

Molten salts are widely used to extract oxides and particulate phases from molten Al and protect Al from oxidization during molten aluminum alloys processing. It was reported that TiCN showed a reasonable stability in molten aluminum during solidification nanoprocessing of aluminum matrix nanocomposites. To further verify the TiCN stability in molten aluminum in molten salt, EDX and TEM were us...

Journal: :Optics express 2014
Feng Xia Xinzheng Zhang Meng Wang Sanming Yi Qian Liu Jingjun Xu

Metal-transparent-metallic-oxide (MTMO) grayscale photomasks fabricated by direct laser writing have been proposed in recent years. The fabrication mechanism is attributed to light-induced melt-oxidization. The temporal-spatial distribution of temperature fields of indium film-glass samples under a laser pulse have been calculated by the Finite-Difference Time-Domain method. The laser action ar...

Journal: :Physical review letters 2002
W H Rippard A C Perrella F J Albert R A Buhrman

Ballistic electron emission microscopy is used to study the formation of ultrathin tunnel barriers by the oxidization of aluminum. An O2 exposure, approximately 30 mTorr sec, forms a uniform tunnel barrier with a barrier height straight phi(b) of 1.2 eV. Greater O2 exposure does not alter straight phi(b) or the ballistic transmissivity of the oxide conduction band. Tunneling spectroscopy indica...

Journal: :Nano letters 2007
Rusen Yang Yu-Lun Chueh Jenny Ruth Morber Robert Snyder Li-Jen Chou Zhong Lin Wang

Hierarchical tree-shaped nanostructures, nanobelts, and nanowires of Zn3P2 were synthesized in a thermal assisted laser ablation process. All nanostructures are tetragonal phased Zn3P2 with excellent crystallinity and are free from an oxidization layer according to electron microscopy and X-ray diffraction analyses. Optical measurement revealed a strong absorption from the ultraviolet to near-i...

Journal: :Bioscience, biotechnology, and biochemistry 2002
Mariana Petkova-Andonova Hiromasa Imaishi Hideo Ohkawa

In higher plants, long-chain fatty acid hydroperoxides are intermediates in the synthesis of a diverse group of bioactive compounds. We used the reverse trascriptase-polymerase chain reaction to isolate a gene responsible for the oxidization of fatty acids from Petunia hybrida. A P450 cDNA not isolated earlier, CYP92B1, contained an open reading frame predicted to encode a polypeptide consistin...

Journal: :Optics express 2014
Yoko Sakurai Kuniyuki Kakushima Kenji Ohmori Keisaku Yamada Hiroshi Iwai Kenji Shiraishi Shintaro Nomura

Low-temperature photoluminescence (PL) spectra of electron-hole systems in Si nanowires (NWs) prepared by thermal oxidization of Si fin structures were studied. Mapping of PL reveals that NWs with uniform width are formed over a large area. Annealing temperature dependence of PL peak intensities was maximized at 400 °C for each NW type, which are consistent with previous reports. Our results co...

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