Evaporation Dynamics of Completely Pinned and Partially Pinned Sessile Droplets in Multidroplet Configurations.

The evaporation of sessile droplets placed in close proximity is influenced by complex vapor-vapor interactions, producing a shielding effect that can significantly extend droplet lifetimes. This study presents a systematic experimental investigation of evaporation dynamics in multidroplet configurations under ambient conditions, comparing completely pinned and partially pinned contact line modes. Completely pinned droplets are generated by introducing alumina nanoparticles, while partially pinned droplets consist of pure water. An isolated droplet is compared with arrays of two, three, and five droplets, each arranged at a fixed spacing ratio. High-speed shadowgraphy is used to measure droplet height, contact angle, volume, and lifetime. Results show that, although completely pinned droplets evaporate faster in absolute terms due to a constant contact radius, they experience a more pronounced relative lifetime increase from vapor shielding than partially pinned droplets. In five-droplet configurations, lifetimes increase by up to 89 and 124% compared to isolated droplets for partially pinned and completely pinned modes, respectively. A theoretical model incorporating evaporative cooling predicts central droplet lifetimes with good agreement. These findings underscore the coupled influence of contact line mobility and droplet proximity on evaporation rates.

• Publication year

  2025

• Venue

  Langmuir

• Publication date

  2025-11-06

• Fields of study

  Chemistry, Medicine, Materials Science, Physics

• Identifiers
  DOI 10.1021/acs.langmuir.5c04303arXiv 2511.06691PMID 41194681
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

• Evaporation of Sessile Drops on a Heated Superhydrophobic Substrate.

  2025cited by this paper
• High-order asymptotic methods provide accurate, analytic solutions to intractable potential problems

  2024cited by this paper
• Intricate Evaporation Dynamics in Different Multidroplet Configurations.

  2024influential reference
• Evaporation-driven coalescence of two droplets undergoing freezing

  2024cited by this paper
• Physics of drying complex fluid drop: Flow field, pattern formation, and desiccation cracks

  2023cited by this paper
• Drying dynamics of sessile-droplet arrays

  2023cited by this paper
• Effect of surface wettability on evaporation rate of droplet array

  2023cited by this paper
• An Experimental Investigation of Evaporation of Ethanol-Water Droplets Laden with Alumina Nanoparticles on a Critically Inclined Heated Substrate.

  2022cited by this paper
• Analytical modeling of the evaporation of sessile drop linear arrays.

  2022cited by this paper
• Evaporation of pure and binary droplets on curved substrates

  2022cited by this paper
• Counter-Intuitive Evaporation in Nanofluids Droplets due to Stick-Slip Nature.

  2022cited by this paper
• Predicting the lifetimes of evaporating droplets in ordered arrays

  2022cited by this paper
• Evaporation of Binary-Mixture Liquid Droplets: The Formation of Picoliter Pancakelike Shapes.

  2021cited by this paper
• A Review on the Evaporation Dynamics of Sessile Drops of Binary Mixtures: Challenges and Opportunities

  2021cited by this paper
• Evaporation Dynamics of a Sessile Droplet of Binary Mixture Laden with Nanoparticles.

  2021cited by this paper
• Evaporation of multiple droplets

  2021cited by this paper
• Interferometric measurement of co-operative evaporation in 2D droplet arrays

  2021cited by this paper
• Wetting dynamics of a water droplet on micro-pillar surfaces with radially varying pitches.

  2020cited by this paper
• Likelihood of survival of coronavirus in a respiratory droplet deposited on a solid surface

  2020cited by this paper
• Lifetime of sessile saliva droplets in the context of SARS-CoV-2

  2020cited by this paper
• Marangoni circulation in evaporating droplets in the presence of soluble surfactants.

  2020cited by this paper
• Evaporation of sessile ethanol-water droplets on a critically inclined heated surface

  2020cited by this paper
• The shielding effect extends the lifetimes of two-dimensional sessile droplets

  2020cited by this paper
• Evaporation of ethanol-water sessile droplet of different compositions at an elevated substrate temperature

  2019cited by this paper
• Effects of operational parameters on liquid nitrogen spray cooling

  2019cited by this paper
• Competitive evaporation of multiple sessile droplets

  2019cited by this paper
• Universal evaporation dynamics of ordered arrays of sessile droplets

  2019cited by this paper
• Study of the phenomenon of the interaction between sessile drops during evaporation

  2019cited by this paper
• Cooperative evaporation in two-dimensional droplet arrays.

  2019cited by this paper
• Evaporation of water: evaporation rate and collective effects

  2016cited by this paper
• Effects of Substrate Heating and Wettability on Evaporation Dynamics and Deposition Patterns for a Sessile Water Droplet Containing Colloidal Particles.

  2016cited by this paper
• Insight into the Evaporation Dynamics of a Pair of Sessile Droplets on a Hydrophobic Substrate.

  2016cited by this paper
• Collective and convective effects compete in patterns of dissolving surface droplets.

  2016cited by this paper
• Controlled Uniform Coating from the Interplay of Marangoni Flows and Surface-Adsorbed Macromolecules.

  2016cited by this paper
• Deposition pattern of interacting droplets

  2015cited by this paper
• Effect of substrate temperature on pattern formation of nanoparticles from volatile drops.

  2015cited by this paper
• Evaporation of sessile droplets

  2014cited by this paper
• Effect of liquid–vapor interface area on the evaporation rate of small sessile droplets

  2014cited by this paper
• On the uniqueness of the receding contact angle: effects of substrate roughness and humidity on evaporation of water drops.

  2014cited by this paper
• Droplet evaporation on heated hydrophobic and superhydrophobic surfaces.

  2014cited by this paper
• Influence of nanoparticles on reducing and enhancing evaporation mass transfer and its efficiency

  2013cited by this paper
• Thermal effects of the substrate on water droplet evaporation.

  2012cited by this paper
• Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces.

  2012cited by this paper
• Experimental investigation of the drying process of water-based paints used in automotive industry

  2011cited by this paper
• Stick-slip of evaporating droplets: substrate hydrophobicity and nanoparticle concentration.

  2011cited by this paper
• Suppression of the coffee-ring effect by shape-dependent capillary interactions

  2011cited by this paper
• Infrared thermography investigation of an evaporating sessile water droplet on heated substrates.

  2010cited by this paper
• Active thermal management of on-chip hot spots using EWOD-driven droplet microfluidics

  2010cited by this paper
• The strong influence of substrate conductivity on droplet evaporation

  2009cited by this paper
• Evaporating characteristics of sessile droplet on hydrophobic and hydrophilic surfaces

  2009cited by this paper
• The effect of nanoparticles on the liquid–gas surface tension of Bi2Te3 nanofluids

  2009cited by this paper
• Effect of TiO2 nanoparticles on contact line stick-slip behavior of volatile drops.

  2009cited by this paper
• On the effect of marangoni flow on evaporation rates of heated water drops.

  2008cited by this paper
• Inkjet-printed line morphologies and temperature control of the coffee ring effect.

  2008cited by this paper
• Spray cooling heat transfer: The state of the art

  2007cited by this paper
• Influence of substrate conductivity on circulation reversal in evaporating drops.

  2007cited by this paper
• Electrohydrodynamic (EHD) dispensing of nanoliter DNA droplets for microarrays.

  2006cited by this paper
• Control of colloidal particle deposit patterns within picoliter droplets ejected by ink-jet printing.

  2006cited by this paper
• Droplet evaporation study applied to DNA chip manufacturing.

  2005cited by this paper
• Ink-jet printing of polymers – from single dots to thin film libraries

  2004cited by this paper
• Inkjet printing of well-defined polymer dots and arrays.

  2004cited by this paper
• Capillary flow as the cause of ring stains from dried liquid drops

  1997cited by this paper
• Influence of Evaporation on Contact Angle

  1995cited by this paper
• A study of the evaporation rates of small water drops placed on a solid surface

  1989cited by this paper
• The evaporation of sessile or pendant drops in still air

  1977cited by this paper

• No citing papers are available for this paper.