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Browsing MIT Open Access Articles by Author "Varanasi, Kripa K."

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Browsing MIT Open Access Articles by Author "Varanasi, Kripa K."

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  • Khalil, Karim Samir; Mahmoudi, Seyed Reza; Abu-dheir, Numan; Varanasi, Kripa K. (American Institute of Physics (AIP), 2014-07)
    Droplet manipulation and mobility on non-wetting surfaces is of practical importance for diverse applications ranging from micro-fluidic devices, anti-icing, dropwise condensation, and biomedical devices. The use of active ...
  • Varanasi, Kripa K.; Deng, Tao (Institute of Electrical and Electronics Engineers, 2010-06)
    Heterogeneous nucleation of water plays an important role in wide range of natural and industrial processes. Though heterogeneous nucleation of water is ubiquitous and everyday experience, spatial control of this important ...
  • Rykaczewski, Konrad; Paxson, Adam T.; Staymates, Matthew; Walker, Marlon L.; Sun, Xiaoda; Anand, Sushant; Srinivasan, Siddarth; McKinley, Gareth H.; Chinn, Jeff; Scott, John Henry J.; Varanasi, Kripa K. (Nature Publishing Group, 2014-03)
    Compared to the significant body of work devoted to surface engineering for promoting dropwise condensation heat transfer of steam, much less attention has been dedicated to fluids with lower interfacial tension. A vast ...
  • Smyth, Katherine M.; Paxson, Adam T.; Kwon, HyukMin; Deng, Tao; Varanasi, Kripa K. (Institute of Electrical and Electronics Engineers, 2010-06)
    We study the wetting energetics and wetting hysteresis of sessile and impacting water droplets on superhydrophobic surfaces as a function of surface texture and surface energy. For sessile drops, we find three wetting ...
  • Varanasi, Kripa K.; Chamarthy, Pramod; Chauhan, Shakti; de Bock, Peter; Deng, Tao; Kulkarni, Ambarish; Mandrusiak, Gary; Rush, Brian; Russ, Boris; Denault, Lauraine; Weaver, Stanton; Gerner, Frank; Leland, Quinn; Yerkes, Kirk (Nano Science and Technology Institute, 2009-05)
    In the DARPA Thermal Ground Plane (TGP) program[1],we are developing a new thermal technology that will enable a monumental thermal technological leap to an entirely new class of electronics, particularly electronics ...
  • Varanasi, Kripa K.; Deng, Tao; Hsu, Ming; Bhate, Nitin; Smith, Jonathan David (American Institute of Physics (AIP), 2010-12)
    We study frost formation and its impact on icephobic properties of superhydrophobic surfaces. Using an environmental scanning electron microscope, we show that frost nucleation occurs indiscriminately on superhydrophobic ...
  • Varanasi, Kripa K.; Deng, Tao; Hsu, Ming; Bhate, Nitin (Nano Science and Technology Institute, 2009-05)
    In this paper, we present static and dynamic wetting interactions of water droplets on a variety of superhydrophobic surfaces. For sessile droplets, wetting states were determined by measuring contact angles and comparing ...
  • Smith, J. David; Meuler, Adam J.; Bralower, Harrison L.; Venkatesan, Rama; Subramanian, Sivakumar; Cohen, Robert E.; McKinley, Gareth H.; Varanasi, Kripa K. (Royal Society of Chemistry, The, 2012-03)
    Clathrate hydrate formation and subsequent plugging of deep-sea oil and gas pipelines represent a significant bottleneck for deep-sea oil and gas operations. Current methods for hydrate mitigation are expensive and energy ...
  • de Bock, H. Peter J.; Chauhan, Shakti; Chamarthy, Pramod; Weaver, Stanton E.; Deng, Tao; Gerner, Frank M.; Ababneh, Mohammed T.; Varanasi, Kripa K. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    As power densities in electronic devices have increased dramatically over the last decade, advanced thermal management solutions are required. A significant part of the thermal resistance budget is commonly taken up by the ...
  • Kwon, HyukMin; Paxson, Adam T.; Varanasi, Kripa K.; Patankar, Neelesh A. (American Physical Society, 2011-01)
    A hitherto unknown mechanism for wetting transition is reported. When a pendant drop settles upon deposition, there is a virtual “collision” where its center of gravity undergoes rapid deceleration. This induces a high ...
  • Meuler, Adam J.; Varanasi, Kripa K.; Mabry, Joseph M.; McKinley, Gareth H.; Cohen, Robert E.; Smith, Jonathan David (American Chemical Society (ACS), 2010-10)
    Ice formation and accretion may hinder the operation of many systems critical to national infrastructure, including airplanes, power lines, windmills, ships, and telecommunications equipment. Yet despite the pervasiveness ...
  • Paxson, Adam T.; Varanasi, Kripa K. (Nature Publishing Group, 2013-02)
    The mobility of drops on surfaces is important in many biological and industrial processes, but the phenomena governing their adhesion, which is dictated by the morphology of the three-phase contact line, remain unclear. ...
  • Varanasi, Kripa K.; Hsu, Ming; Bhate, Nitin; Yang, Wensha; Deng, Tao (American Institute of Physics, 2009-08)
    Heterogeneous nucleation of water plays an important role in a wide range of natural and industrial processes. Though heterogeneous nucleation of water is ubiquitous and an everyday experience, spatial control of this ...
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