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Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox
นักวิจัย : Zhang, Xi , Huang, Yongli , Ma, Zengsheng , Zhou, Yichun , Zhou, Ji , Zheng, Weitao , Jiang, Qing , Sun, Chang Q.
คำค้น : DRNTU::Science::Chemistry::Physical chemistry
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Zhang, X., Huang, Y., Ma, Z., Zhou, Y., Zhou, J., Zheng, W., et al. (2014). Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox. Physical chemistry chemical physics, 16(42), 22995-23002. , http://hdl.handle.net/10220/24395 , http://dx.doi.org/10.1039/C4CP03669G
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical chemistry chemical physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The Mpemba paradox, that is, hotter water freezes faster than colder water, has baffled thinkers like Francis Bacon, René Descartes, and Aristotle since B.C. 350. However, a commonly accepted understanding or theoretical reproduction of this effect remains challenging. Numerical reproduction of observations, shown herewith, confirms that water skin supersolidity [Zhang et al., Phys. Chem. Chem. Phys., DOI: 10.1039/C1034CP02516D] enhances the local thermal diffusivity favoring heat flowing outwardly in the liquid path. Analysis of experimental database reveals that the hydrogen bond (O:H–O) possesses memory to emit energy at a rate depending on its initial storage. Unlike other usual materials that lengthen and soften all bonds when they absorb thermal energy, water performs abnormally under heating to lengthen the O:H nonbond and shorten the H–O covalent bond through inter-oxygen Coulomb coupling [Sun et al., J. Phys. Chem. Lett., 2013, 4, 3238]. Cooling does the opposite to release energy, like releasing a coupled pair of bungees, at a rate of history dependence. Being sensitive to the source volume, skin radiation, and the drain temperature, the Mpemba effect proceeds only in the strictly non-adiabatic ‘source–path–drain’ cycling system for the heat “emission–conduction–dissipation” dynamics with a relaxation time that drops exponentially with the rise of the initial temperature of the liquid source.

บรรณานุกรม :
Zhang, Xi , Huang, Yongli , Ma, Zengsheng , Zhou, Yichun , Zhou, Ji , Zheng, Weitao , Jiang, Qing , Sun, Chang Q. . (2557). Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhang, Xi , Huang, Yongli , Ma, Zengsheng , Zhou, Yichun , Zhou, Ji , Zheng, Weitao , Jiang, Qing , Sun, Chang Q. . 2557. "Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhang, Xi , Huang, Yongli , Ma, Zengsheng , Zhou, Yichun , Zhou, Ji , Zheng, Weitao , Jiang, Qing , Sun, Chang Q. . "Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Zhang, Xi , Huang, Yongli , Ma, Zengsheng , Zhou, Yichun , Zhou, Ji , Zheng, Weitao , Jiang, Qing , Sun, Chang Q. . Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.