Hydrogen diffusion mechanism in ultra-thin Pd alloys by torsional oscillator

扭转振荡器研究超薄钯合金中的氢扩散机制

• 批准号: 21760025
• 负责人: AOKI Yuki
• 金额: $ 2.58万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760025/
• 关键词: 水素; シリコン基板; 透過; 超薄膜; 界面; 吸着; 拡散; パラジウム; 昇温脱離; 銀; シリコン; 銀薄膜

The technological innovation for improvement of the hydrogen storage efficiency is expected. In the viewpoint of the hydrogen absorption in the atomic level, the hydrogen molecule dissociatively adsorbs at the Pd top surface. Subsequently, the hydrogen atom diffuses into the bulk. During the diffusing process toward the bulk, the atomic hydrogen goes through the very near surface region, whose potential energy is drastically different than that of the bulk. Though this very near surface region is very narrow as 1 or 2 atom layers, every hydrogen atom stores into the bulk or releases to the vacuum via this region. Therefore, the investigation of the hydrogen adsorption or desorption mechanism at this peculiar very near surface region is a key for improvement of the hydrogen storage efficiency. This study focuses to the hydrogen adsorption or desorption mechanism at the very near surface region.

提高储氢效率的技术创新值得期待。从原子水平的氢吸收来看，氢分子解离吸附在Pd顶表面。随后，氢原子扩散到本体中。在向块体扩散的过程中，原子氢穿过非常接近的表面区域，其势能与块体的势能截然不同。尽管这个非常接近表面的区域非常狭窄，只有 1 或 2 个原子层，但每个氢原子都会通过该区域存储到主体中或释放到真空中。因此，研究这种特殊的极近表面区域的氢吸附或解吸机制是提高储氢效率的关键。这项研究的重点是非常接近表面区域的氢吸附或解吸机制。

项目成果

Ag/Si(111)7x7表面のAg/Si境界面に吸着した水素

Ag/Si(111)7x7表面Ag/Si界面上吸附的氢

• 发表时间: 2010
• 作者: 石林

Quantum interference of Rashba-type spin-split surface state electrons.

Rashba型自旋分裂表面态电子的量子干涉。

• DOI: 10.1103/physrevlett.107.027204
• 发表时间: 2011-07-07
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: H. Hirayama;Y. Aoki;Chiaki Kato
• 通讯作者: Chiaki Kato

Spin Fluid Dynamics Observed by Magnetic Fountain Effect and Mechanical spin pumping effect in the ferromagnetic superfluid^3 A_1 Phase

铁磁超流体^3<He> A_1相中磁喷泉效应和机械自旋泵浦效应观察的自旋流体动力学

• 发表时间: 2010
• 作者: Y. Aoki; A. Yamaguchi; K. Suzuki; H. Ishimoto;H. Kojima
• 通讯作者: H. Kojima

H adsorption at Ag/Si interfaces in epitaxially grown Ag(111) films on Si(111) 7×7 substrates

Si(111) 7×7 衬底上外延生长的 Ag(111) 薄膜中 Ag/Si 界面的 H 吸附

• 发表时间: 2010
• 作者: Y. Aoki; L. Shin; T. Sugimoto; H. Hirayama
• 通讯作者: H. Hirayama

Spin pump for boosting spin polarization of superfluid^3 A_1 phase

用于增强超流体^3<He> A_1相自旋极化的自旋泵

• 发表时间: 2009
• 作者: A. Yamaguchi; Y. Aoki; S. Murakawa; H. Ishimoto;H. Kojima
• 通讯作者: H. Kojima