Heating of Nanosized Liquid Water in High-Intensity Terahertz Pulses
Zi-Qian Huang1,2** , Rong-Yao Yang1 , Wei-Zhou Jiang1 , Qi-Lin Zhang3
1 Department of Physics, Southeast University, Nanjing 2111892 Department of Physics, Guangxi Teachers Education University, Nanning 5300233 Department of Mathematics and Physics, Anhui Polytechnic University, Wuhu 241000
Abstract ：Non-equilibrium molecular dynamics simulations of liquid water in picosecond high-power terahertz pulses are performed by using a non-polarizable potential model. Numerical results show that the energy absorption of water molecules exhibits a pronounced resonance with THz pulses in the frequency range of 14–17 THz. With the THz pulse at resonant frequencies, the maximum temperature is about 562 K by heating the water at room temperature. Further investigation indicates that the results are independent of the size of the nanoscale water box. The efficiency of energy transfer by resonant absorption is more than seven times of microwave heating. These studies show promising applications of ultrashort THz pulses.
收稿日期: 2015-08-26
出版日期: 2016-01-29
:
31.15.xv
(Molecular dynamics and other numerical methods)
61.20.Ja
(Computer simulation of liquid structure)
87.50.uj
(Biophysical mechanisms of interaction)
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