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Wen Y, Liu Y. Controlled stretching and splitting behaviors of nanodroplets by designing surface wettability patterns. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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2
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Suspended water nanodroplets evaporation and its deviation from continuum estimations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3
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Huang Y, Zhang C, Meng S. Molecular origin of fast evaporation at the solid-water-vapor line in a sessile droplet. NANOSCALE 2022; 14:2729-2734. [PMID: 35112686 DOI: 10.1039/d1nr07479b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
By analyzing the behaviors of water molecules at the solid-water-vapor contact line, we explore the molecular origin of large evaporation rates at the contact line and find new ways to increase the evaporation of the droplet. In contrast to previous models considering macroscopic surroundings and the geometry of the droplet, here we study the behaviors of water molecules by introducing cohesive energy which includes interactions of water molecules with both other water molecules in the droplet and atoms in the substrate. Molecules at the contact line bear the smallest evaporating energy barrier and therefore, possess the largest possibility to evaporate. Further analyses show that the evaporation rate of the droplet is enhanced through the large length of the contact line. These analyses are corroborated by experiments, where the evaporation rate of the droplet is enhanced up to 30% by incorporating hollow glass spheres in the droplet. Our theoretical and experimental efforts illustrate the underlying molecular mechanisms of large evaporation rates of a droplet, providing new avenues to accelerate droplet evaporation.
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Affiliation(s)
- Yongfeng Huang
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - Cui Zhang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - Sheng Meng
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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Zhou J, Li S, Tang SZ, Zhang D, Tian H. Effect of nanostructure on explosive boiling of thin liquid water film on a hot copper surface: a molecular dynamics study. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.2007909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Junjie Zhou
- School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Shanshan Li
- School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Song-Zhen Tang
- School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Dongwei Zhang
- School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Heqing Tian
- School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, People’s Republic of China
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5
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Study on CO
2
gasification properties of coal gasification wastewater slurry. ASIA-PAC J CHEM ENG 2021. [DOI: 10.1002/apj.2617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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6
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He X, Chen R, Zhu X, Liao Q, Li S. Laser assisted microfluidic membrane evaporator for sample crystallization separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116817] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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He B, Darhuber AA. Evaporation of water droplets on photoresist surfaces – An experimental study of contact line pinning and evaporation residues. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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8
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He X, Xu Q, Chen R, Zhu X, Liao Q, Ye D, Zhang B, Jiao L, Li W. IR laser induced phase change behaviors of the NaCl solution in the microchannel. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.05.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Qiang W, Wang B, Li Q, Wang W. Molecular dynamics simulation of wetting and evaporation characteristics for sessile nanofluid nanodroplets. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Ao T, Matsumoto M. Example of a Fluid-Phase Change Examined with MD Simulation: Evaporative Cooling of a Nanoscale Droplet. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:11679-11686. [PMID: 28830145 DOI: 10.1021/acs.langmuir.7b02059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We carried out a series of molecular dynamics simulations in order to examine the evaporative cooling of a nanoscale droplet of a Lennard-Jones liquid. After thermally equilibrating a droplet at a temperature Tini/Tt ≃ 1.2 (Tt is the triple-point temperature), we started the evaporation into vacuum by removing vaporized particles and monitoring the change in droplet size and the temperature inside. As free evaporation proceeds, the droplet reaches a deep supercooled liquid state of T/Tt ≃ 0.7. The temperature was found to be uniform in spite of the fast evaporative cooling on the surface. The time evolution of the evaporating droplet properties was satisfactorily explained with a simple one-dimensional phase-change model. After a sufficiently long run, the supercooled droplet was crystallized into a polycrystalline fcc structure. The crystallization is a stochastic nucleation process. The time and the temperature of inception were evaluated over 42 samples, which indicate the existence of a stability limit.
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Affiliation(s)
- Takashi Ao
- Department of Mechanical Engineering and Science, Kyoto University , Kyoto 615-8540, Japan
| | - Mitsuhiro Matsumoto
- Department of Mechanical Engineering and Science, Kyoto University , Kyoto 615-8540, Japan
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11
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Karadima KS, Mavrantzas VG, Pandis SN. Molecular dynamics simulation of the local concentration and structure in multicomponent aerosol nanoparticles under atmospheric conditions. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp02036h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
MD simulations predicted core–shell or partially engulfed morphologies (depending on the type of the organic compound present) in multicomponent aerosol nanoparticles.
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Affiliation(s)
- Katerina S. Karadima
- Department of Chemical Engineering
- University of Patras
- Patras
- Greece
- Institute of Chemical Engineering Sciences
| | - Vlasis G. Mavrantzas
- Department of Chemical Engineering
- University of Patras
- Patras
- Greece
- Institute of Chemical Engineering Sciences
| | - Spyros N. Pandis
- Department of Chemical Engineering
- University of Patras
- Patras
- Greece
- Institute of Chemical Engineering Sciences
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12
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Igoshkin AM, Golovnev IF, Krisyuk VV, Igumenov IK. Structure of zirconium tetrahydroborate Zr(BH4)4: A molecular dynamics study. J STRUCT CHEM+ 2016. [DOI: 10.1134/s0022476616060020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Li Q, Wang B, Chen Y, Zhao Z. Wetting and evaporation of argon nanodroplets on smooth and rough substrates: Molecular dynamics simulations. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.04.090] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Zhang J, Borg MK, Sefiane K, Reese JM. Wetting and evaporation of salt-water nanodroplets: A molecular dynamics investigation. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 92:052403. [PMID: 26651708 DOI: 10.1103/physreve.92.052403] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Indexed: 06/05/2023]
Abstract
We employ molecular dynamics simulations to study the wetting and evaporation of salt-water nanodroplets on platinum surfaces. Our results show that the contact angle of the droplets increases with the salt concentration. To verify this, a second simulation system of a thin salt-water film on a platinum surface is used to calculate the various surface tensions. We find that both the solid-liquid and liquid-vapor surface tensions increase with salt concentration and as a result these cause an increase in the contact angle. However, the evaporation rate of salt-water droplets decreases as the salt concentration increases, due to the hydration of salt ions. When the water molecules have all evaporated from the droplet, two forms of salt crystals are deposited, clump and ringlike, depending on the solid-liquid interaction strength and the evaporation rate. To form salt crystals in a ring, it is crucial that there is a pinned stage in the evaporation process, during which salt ions can move from the center to the rim of the droplets. With a stronger solid-liquid interaction strength, a slower evaporation rate, and a higher salt concentration, a complete salt crystal ring can be deposited on the surface.
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Affiliation(s)
- Jun Zhang
- James Weir Fluids Laboratory, Department of Mechanical and Aerospace Engineering, University of Strathclyde, Glasgow G1 1XJ, United Kingdom
| | - Matthew K Borg
- School of Engineering, University of Edinburgh, Edinburgh EH9 3FB, United Kingdom
| | - Khellil Sefiane
- School of Engineering, University of Edinburgh, Edinburgh EH9 3FB, United Kingdom
- Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin, China
| | - Jason M Reese
- School of Engineering, University of Edinburgh, Edinburgh EH9 3FB, United Kingdom
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Si C, Wang XD, Chen M, Duan YY. Effect of wall adsorption on the nano-droplet evaporation in a nano-channel: A molecular dynamics investigation. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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