Insights into Drying of Noncircular Sessile Nanofluid Droplets toward Multiscale Surface Patterning Using a Wall-Less Confinement Architecture

被引:6
作者
Kabi, Prasenjit [1 ]
Chaudhuri, Swetaprovo [1 ,2 ]
Basu, Saptarshi [1 ,3 ]
机构
[1] Indian Inst Sci, Interdisciplinary Ctr Energy Res, Bangalore 560012, Karnataka, India
[2] Indian Inst Sci, Dept Aerosp Engn, Bangalore 560012, Karnataka, India
[3] Indian Inst Sci, Dept Mech Engn, Bangalore 560012, Karnataka, India
关键词
DELAYED COALESCENCE; IMAGE VELOCIMETRY; MISCIBLE LIQUIDS; EVAPORATION; LITHOGRAPHY; SUPPRESSION; DYNAMICS; DROPS; FLOW;
D O I
10.1021/acs.langmuir.6b02962
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Surface patterning with functional colloids is an important research area because of its widespread applicability in domains such as nanoelectronics, pharmaceutics, semiconductors, and photovoltaics among others. In this endeavor, we propose a low-cost patterning technique that aspires to eliminate the more expensive methodologies that are presently in practice. Using a simple document stamp on which patterns of any geometry can be embossed, we are able to print 2D millimeter-scale "wall-less confinement" using an ink-based hydrophobic fence on any plasma-treated superhydrophilic surface. The confinement is subsequently filled with nanocolloidal liquid(s). Using confinement geometry, we are able to control the 3D shape of the droplet to exhibit multiple interfacial curvatures. The droplet in the "wall-less confinements" evaporates naturally, exhibiting unique geometry (curvature)-induced flow structures that induce the nanoparticles to self-assemble into functional patterns. We have also shown that by modifying the geometry of the pattern, evaporation, flow, and particle deposition dynamics get altered, leading to precipitate topologies from macro- to microscales. We present two such geometrical designs that demonstrate the capability of modifying both macroscopic and microscopic features of the final precipitate. We have also provided a description of the physical mechanisms of the drying process by resolving the unique flow pattern using a combination of imaging and microparticle image velocimetry. These provide insights into the coupled dynamics of evaporation and flow responsible for the evolution of particle deposition pattern. Precipitate characterization using scanning electron microscopy and dark-field microscopy highlights the transformation in the deposit morphology.
引用
收藏
页码:10977 / 10986
页数:10
相关论文
共 29 条
  • [1] MECHANICAL STABILITY OF SOL-GEL FILMS
    ATKINSON, A
    GUPPY, RM
    [J]. JOURNAL OF MATERIALS SCIENCE, 1991, 26 (14) : 3869 - 3873
  • [2] Towards universal buckling dynamics in nanocolloidal sessile droplets: the effect of hydrophilic to superhydrophobic substrates and evaporation modes
    Basu, Saptarshi
    Bansal, Lalit
    Miglani, Ankur
    [J]. SOFT MATTER, 2016, 12 (22) : 4896 - 4902
  • [3] Self-Assembly of Colloidal Particles from Evaporating Droplets: Role of DLVO Interactions and Proposition of a Phase Diagram
    Bhardwaj, Rajneesh
    Fang, Xiaohua
    Somasundaran, Ponisseril
    Attinger, Daniel
    [J]. LANGMUIR, 2010, 26 (11) : 7833 - 7842
  • [4] Studies on surface wettability of poly(dimethyl) siloxane (PDMS) and glass under oxygen-plasma treatment and correlation with bond strength
    Bhattacharya, S
    Datta, A
    Berg, JM
    Gangopadhyay, S
    [J]. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 2005, 14 (03) : 590 - 597
  • [5] Delayed coalescence of droplets with miscible liquids: Lubrication and phase field theories
    Borcia, R.
    Menzel, S.
    Bestehorn, M.
    Karpitschka, S.
    Riegler, H.
    [J]. EUROPEAN PHYSICAL JOURNAL E, 2011, 34 (03)
  • [6] Arched Structures Created by Colloidal Droplets as They Dry
    Chen, Lifeng
    Evans, Julian R. G.
    [J]. LANGMUIR, 2009, 25 (19) : 11299 - 11301
  • [7] Dancing droplets: Autonomous surface tension-driven droplet motion
    Cira, Nate J.
    Benusiglio, Adrien
    Prakash, Manu
    [J]. PHYSICS OF FLUIDS, 2014, 26 (09)
  • [8] Suppression of the Coffee Ring Effect by Hydrosoluble Polymer Additives
    Cui, Liying
    Zhang, Junhu
    Zhang, Xuemin
    Huang, Long
    Wang, Zhanhua
    Li, Yunfeng
    Gao, Hainan
    Zhu, Shoujun
    Wang, Tieqiang
    Yang, Bai
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2012, 4 (05) : 2775 - 2780
  • [9] Buoyancy-induced on-the-spot mixing in droplets evaporating on nonwetting surfaces
    Dash, Susmita
    Chandramohan, Aditya
    Weibel, Justin A.
    Garimella, Suresh V.
    [J]. PHYSICAL REVIEW E, 2014, 90 (06)
  • [10] Capillary flow as the cause of ring stains from dried liquid drops
    Deegan, RD
    Bakajin, O
    Dupont, TF
    Huber, G
    Nagel, SR
    Witten, TA
    [J]. NATURE, 1997, 389 (6653) : 827 - 829