表面科学
Online ISSN : 1881-4743
Print ISSN : 0388-5321
ISSN-L : 0388-5321
32 巻 , 12 号
選択された号の論文の14件中1~14を表示しています
巻頭言
特集:レーザー応用技術の新展開
ポピュラーサイエンス
  • 香取 秀俊
    原稿種別: ポピュラーサイエンス
    2011 年 32 巻 12 号 p. 797-800
    発行日: 2011/12/10
    公開日: 2011/12/22
    ジャーナル フリー
    The ‘magic frequency’ protocol has made it possible to design new type of atomic clocks based on well-engineered perturbations. Such ‘optical lattice clocks’ will allow extremely precise and speedy timekeeping, which targets fractional uncertainty of 10-18, by using a large number of atoms and by sharing ‘magic frequency’ protocol. This paper covers motivations for developing such clocks and their experimental realizations. Possible impacts and future applications of optical lattice clocks are discussed, such as testing the fundamental laws of physics and developing relativistic geodesy.
  • 古澤 明
    原稿種別: ポピュラーサイエンス
    2011 年 32 巻 12 号 p. 801-803
    発行日: 2011/12/10
    公開日: 2011/12/22
    ジャーナル フリー
    Quantum teleportation is a transfer protocol of quantum states, which cannot be realized only with classical physics. The essence of this protocol is quantum entanglement, which was proposed by Einstein as a counter example for quantum mechanics. In terms of quantum information processing, quantum teleportation can be regarded as an “Identity” operation. So one can modify the quantum circuit to make an arbitrary operation and universal quantum computing. One of the application of the quantum computing is “quantum version of coherent communication”, which enables us to get the channel capacity beyond the classical limit (Shannon limit).
論文
  • 緒方 文彦, 冨永 壽人, 寒川 萌, 井上 健二, 川崎 直人
    原稿種別: 論文
    2011 年 32 巻 12 号 p. 804-808
    発行日: 2011/12/10
    公開日: 2011/12/22
    ジャーナル フリー
    In this study, carbonaceous material was prepared from waste cotton (CT1000). Yield, base consumption, pH, specific surface area, pore volume, and mean pore diameter of CT1000 were investigated. Specific surface area and pore volume of CT1000 was greater than that of CT (virgin waste cotton). Kayacryl Yellow (KY: yellow dye) was used for adsorbate. The equilibrium adsorption was reached within 48 h. The adsorption rate data was fitted to the pseudo-second-order kinetic equation, which indicated that reaction rate was in proportion to the square of adsorbate concentration in aqueous solution systems. Moreover, the adsorption isotherm data was fitted to the Freundlich equation. Amount of KY adsorbed onto CT1000 in the presence of dye assistant auxiliaries was similar trend to that onto CT1000 in the absence of dye assistant auxiliaries. These results showed that CT1000 was useful for purification of wastewater containing dyestuffs.
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