Effect of radiant energy on near-surface water.

Effect of radiant energy on near-surface water.
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DOI:
10.1021/jp908163w
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发表时间:
2009-10-22
期刊:
The journal of physical chemistry. B
影响因子:
--
通讯作者:
Pollack GH
Pollack GH
中科院分区:
其他
文献类型:
--
作者:
Chai B;Yoo H;Pollack GH

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虽然最近对界面水的研究主要集中在靠近固体边界的少数界面层上,但百年来的研究已经广泛表明,界面附近的液体宏观域具有与体不同的特征。最近的观察表明,胶体和分子溶质被排除在许多亲水表面附近的广泛区域之外,重新点燃了对这些远程效应的兴趣[Zheng和Pollack物理]。电子工程学报,2003,68(03):1408。对这些含水“隔离区”的研究表明,与散装水相比,这些水的相更加有序,隔离区和隔离区以外的区域之间存在局部电荷分离[Zheng等人]。胶体界面科学,2006,27,19;郑和明太鱼水与细胞:亲水表面附近的溶质排斥和电位分布施普林格:荷兰,2006年;pp 165-174],这里通过pH测量得到了证实。然而,主要的问题是,建造这些带电、低熵区域的能量可能来自哪里。结果表明,辐射能以可逆的、波长相关的方式极大地扩展了这些区域。入射辐射能可能以熵损失和电荷分离的形式储存在水中。
While recent research on interfacial water has focused mainly on the few interfacial layers adjacent to the solid boundary, century-old studies have extensively shown that macroscopic domains of liquids near interfaces acquire features different from the bulk. Interest in these long-range effects has been rekindled by recent observations showing that colloidal and molecular solutes are excluded from extensive regions next to many hydrophilic surfaces [Zheng and Pollack Phys. Rev. E 2003, 68, 031408]. Studies of these aqueous “exclusion zones” reveal a more ordered phase than bulk water, with local charge separation between the exclusion zones and the regions beyond [Zheng et al. Colloid Interface Sci. 2006, 127, 19; Zheng and Pollack Water and the Cell: Solute exclusion and potential distribution near hydrophilic surfaces; Springer: Netherlands, 2006; pp 165–174], here confirmed using pH measurements. The main question, however, is where the energy for building these charged, low-entropy zones might come from. It is shown that radiant energy profoundly expands these zones in a reversible, wavelength-dependent manner. It appears that incident radiant energy may be stored in the water as entropy loss and charge separation.
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