Lifetime of sessile saliva droplets in the context of SARS-CoV-2

Spreading of respiratory diseases, such as COVID-19, from contaminated surfaces is dependent on the drying time of the deposited droplets containing the virus. The evaporation rate depends on environmental conditions, such as ambient temperature and relative humidity and physical properties (e.g., droplet volume, contact angle and composition). The respiratory droplets contain salt (NaCl), protein (mucin), and surfactant (dipalmitoylphosphatidylcholine) in addition to water, which are expected to influence the evaporation in a big way. A diffusion-based theoretical model for estimating the drying time is developed which takes into account the dynamic contact angle of saliva droplets laden with salt and insoluble surfactants. The effect of the initial volume, contact angle, salinity, surfactant concentration, ambient temperature and relative humidity on the drying time of droplets is investigated.

• Publication year

  2020

• Venue

  International Communications in Heat and Mass Transfer

• Publication date

  2020-08-07

• Fields of study

  Materials Science, Medicine, Physics, Environmental Science

• Identifiers
  DOI 10.1016/j.icheatmasstransfer.2021.105178arXiv 2008.04100PMCID 7885686
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Early Transmission Dynamics in Wuhan, China, of Novel Coronavirus–Infected Pneumonia

  2020cited by this paper
• Effects of ambient temperature and humidity on droplet lifetime – A perspective of exhalation sneeze droplets with COVID-19 virus transmission

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

  2020influential reference
• The flow physics of COVID-19

  2020cited by this paper
• Turbulent Gas Clouds and Respiratory Pathogen Emissions: Potential Implications for Reducing Transmission of COVID-19.

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

  2019cited by this paper
• Physico-chemical characteristics of evaporating respiratory fluid droplets

  2018influential reference
• Recent advances in droplet wetting and evaporation.

  2018cited by this paper
• Effect of ambient temperature and relative humidity on interfacial temperature during early stages of drop evaporation.

  2016cited by this paper
• Evaporation of Sessile Droplets Laden with Particles and Insoluble Surfactants.

  2016cited by this paper
• The evaporation behavior of sessile droplets from aqueous saline solutions.

  2015cited by this paper
• Preparation and adhesion performance of transparent acrylic pressure sensitive adhesives for touch screen panel

  2014cited by this paper
• Transport and deposition patterns in drying sessile droplets

  2014cited by this paper
• Comparison of Approaches for Measuring the Mass Accommodation Coefficient for the Condensation of Water and Sensitivities to Uncertainties in Thermophysical Properties

  2012cited by this paper
• Evaluation of Plasma-Deposited Hydrophobic Coatings on Pigment-Coated Paper for Reduced Dampening Water Absorption

  2010cited by this paper
• Perry's Chemical Engineers' Handbook

  2007cited by this paper
• Factors involved in the aerosol transmission of infection and control of ventilation in healthcare premises

  2006cited by this paper
• Dynamics of water spreading on a glass surface.

  2004cited by this paper
• Experimental study of evaporating water-ethanol mixture sessile drop: influence of concentration

  2003cited by this paper
• Evaporation of a Sessile Droplet on a Substrate

  2002cited by this paper
• Wetting of wood

  1997cited by this paper
• Water Wetting and Retention of Cotton Assemblies as Affected by Alkaline and Bleaching Treatments

  1996cited by this paper
• On the collision of a droplet with a solid surface

  1991cited by this paper

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

  2025cites this paper
• Influence of interfacial characteristics and spatial dynamics on the antiviral efficacy of aerosolized plasma activated water

  2025cites this paper
• Evaporation of Sessile Drops on a Heated Superhydrophobic Substrate.

  2025cites this paper
• Intricate Evaporation Dynamics in Different Multidroplet Configurations.

  2024cites this paper
• Insights into Surrogate Respiratory Droplet Behaviour on Inclined Surfaces: Implications for Disease Transmission

  2024cites this paper
• Influence of indoor environmental conditions on airborne transmission and lifetime of sneeze droplets in a confined space: a way to reduce COVID-19 spread

  2023cites this paper
• Experimental investigation on the effect of vapor environment on the pattern evolutions during sessile water droplet evaporation at low pressures

  2023cites this paper
• Stability and Retention Force Factor for Binary-Nanofluid Sessile Droplets on an Inclined Substrate

  2023cites this paper
• Reduced-Order Model for Surfactant-Laden Electrified Sessile Droplets.

  2023cites this paper
• Evaporation of pure and binary droplets on curved substrates

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

  2022cites this paper
• Role of barriers in the airborne spread of virus-containing droplets: A study based on high-resolution direct numerical simulations

  2022cites this paper
• Penetration and secondary atomization of droplets impacted on wet facemasks

  2021cites this paper
• Intense jet flow with symmetric vortices induced by saline concentration gradient at free surface of a drying saline droplet

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

  2021cites this paper
• Fluid dynamics of respiratory droplets in the context of COVID-19: Airborne and surfaceborne transmissions

  2021cites this paper
• Sequentially estimating the dynamic contact angle of sessile saliva droplets in view of SARS-CoV-2

  2021influential citation