巻号一覧
40 巻 (2013)
- 4 号 p. 133-
- 3 号 p. 92-
- 2 号 p. 51-
- 1 号 p. 1-
40 巻, 4 号
選択された号の論文の6件中1～6を表示しています
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解説
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小林 速男, 小林 昭子2013 年 40 巻 4 号 p. 133-138
発行日: 2013/10/25
公開日: 2022/11/20
ジャーナル フリーSince the discoveries of Peierls transitions of one-dimensional molecular metals around the early 1970s, and especially the discovery of the first organic superconductor in 1980, a great deal of progress has been made in the field of physics and chemistry of molecular conductors. In this review, our studies and the related works on the development and electromagnetic properties of several molecular conductors such as α-, β-, θ- and κ-ET2I3, single-component molecular metal, [Ni(tmdt)2] and two types of magnetic organic superconductors based on BETS molecules and magnetic FeCl4- and FeBr4- anions, were briefly described. The thermal properties of magnetic organic superconductors, especially somewhat mysterious properties of the field-induced organic superconductor, λ-BETS2FeCl4 clarified by Nishio’s group were also described.抄録全体を表示PDF形式でダウンロード (748K) -
水野 操, 水谷 泰久2013 年 40 巻 4 号 p. 139-145
発行日: 2013/10/25
公開日: 2022/11/20
ジャーナル フリーVibrational energy flow in hemeproteins has been examined by picosecond time-resolved anti-Stokes resonance Raman spectroscopy. By taking advantage of the extremely short nonradiative excited state lifetime of heme in the protein (<< ps), excess vibrational energy of 20000−25000 cm−1 was optically deposited selectively at the heme site. Subsequent energy relaxation in the protein moiety was investigated by monitoring the anti-Stokes Raman intensities of heme and tryptophan residues. Our results demonstrate that the present technique is a powerful tool for studying the vibrational energy flow in proteins.抄録全体を表示PDF形式でダウンロード (862K) -
岡田 悠悟, 宇野 真由美, 竹谷 純一2013 年 40 巻 4 号 p. 146-149
発行日: 2013/10/25
公開日: 2022/11/20
ジャーナル フリーWe disclose a method of quantitatively characterizing crystalline defects by measuring low-temperature thermal conductivity in relatively clean organic molecular crystals. A new thermodevice is developed to measure low-temperature thermal conductivity of organic single crystals that often grow only minute.The technique of Micro Electro Mechanical Systems (MEMS) is employed, so that samples with the length from a few tens to several hundreds of μm can be mounted.Thermal conductivity of rubrene single crystals is measured down to 0.5 K in order to estimate the density of crystalline defects quantitatively from their phonon mean-free paths.The temperature profile of the rubrene crystals exhibit a pronounced peak at ~ 10 K in the thermal conductivity due to very long mean-free paths of their phonons, which indicates extremely low-level defect density in the region of 1015-1016 cm-3 depending on different growth methods.The crystals grown from the gas phase tend to have less defects than those grown from solution.抄録全体を表示PDF形式でダウンロード (554K) -
丹羽 栄貴2013 年 40 巻 4 号 p. 150-157
発行日: 2013/10/25
公開日: 2022/11/20
ジャーナル フリーThe sintering temperature dependence of the porosity, specific surface area and electrical conductivity of LaNi0.6Fe0.4O3-δ, which is one of the candidate materials for solid oxide fuel cells (SOFC) cathodes, prepared by Pechini method has been investigated. From a comparison of the sintering property, specific surface area and electrical conductivity with those of specimens prepared by other preparation methods, it has been revealed that the Pechini method and co-precipitation (CP) route are the most suitable methods for the preparation of LaNi0.6Fe0.4O3-δ ceramic for SOFC cathode. The superior properties of the specimens prepared by the Pechini method and CP route can be attributed to the homogeneous cation distribution in the precursor, resulting in lower temperature required for sintering, at which the abnormal grain growth does not occur and a homogeneous grain size can be obtained.抄録全体を表示PDF形式でダウンロード (765K) -
山澤 一彰, 丹波 純2013 年 40 巻 4 号 p. 158-164
発行日: 2013/10/25
公開日: 2022/11/20
ジャーナル フリーTemperature measurement is a common tool for scientific research and manufacturing products etc. However, the knowledge of temperature standards, i.e. how the unit of temperature is defined, how the temperature standards are actually realized and how they are disseminated, might not be widely recognized. In this article, we first summarize the current status of the temperature standards; from the definition of the base unit kelvin, to the temperature scale and the traceability of measurement. Then we refer to the evolution of the temperature standards, specifically the topics related to the redefinition of the unit kelvin.抄録全体を表示PDF形式でダウンロード (865K)
フロギストン
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2013 年 40 巻 4 号 p. 165-167
発行日: 2013/10/25
公開日: 2022/11/20
ジャーナル フリーPDF形式でダウンロード (212K)
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