@article{williams_islam_velev_2022, title={Light scattering of colloidal suspensions: formation and stability in bourbon whiskeys}, volume={5}, ISSN={["2050-0416"]}, DOI={10.1002/jib.689}, abstractNote={The dilution of whiskey with water can lead to the formation of unwanted haze which is exacerbated at lower temperatures. This phenomenon is well known in the whiskey industry, and it is normal practice to use cold filtration to produce a clear product as well as improve product stability. However, to date, there has been no quantitative characterisation or understanding of the size and concentration of the colloidal particles as a function of whiskey dilution, temperature, and maturation. This report utilises light scattering techniques to characterise the formation of colloids in bourbon whiskeys of different aging periods. Higher water dilution decreased the size of the colloidal particulates and increased their stability. Aged samples (> 36 months) were found to be more stable, having a higher concentration of colloids at lower dilutions. This work demonstrates that dynamic light scattering can be useful for quality control in the spirits industry. © 2022 The Institute of Brewing & Distilling.}, journal={JOURNAL OF THE INSTITUTE OF BREWING}, author={Williams, Stuart J. and Islam, Sabina and Velev, Orlin D.}, year={2022}, month={May} } @article{islam_velev_2020, title={Mechanism and control of "coffee-ring erosion'' phenomena in structurally colored ionomer films}, volume={16}, ISSN={["1744-6848"]}, DOI={10.1039/c9sm02457c}, abstractNote={Structurally colored sulfopolyester films with higher fraction of hydrophilic groups experience higher “coffee-ring erosion” as a result of water droplet deposition.}, number={11}, journal={SOFT MATTER}, author={Islam, Sabina and Velev, Orlin D.}, year={2020}, month={Mar}, pages={2683–2694} } @article{carrithers_brown_rashed_islam_velev_williams_2020, title={Multiscale Self-Assembly of Distinctive Weblike Structures from Evaporated Drops of Dilute American Whiskeys}, volume={14}, ISSN={["1936-086X"]}, DOI={10.1021/acsnano.9b08984}, abstractNote={When a sessile droplet of a complex mixture evaporates, its nonvolatile components may deposit into various patterns. One such phenomena, the coffee ring effect, has been a topic of interest for several decades. Here, we identify what we believe to be a fascinating phenomenon of droplet pattern deposition for another well-known beverage-what we have termed a "whiskey web". Nanoscale agglomerates were generated in diluted American whiskeys (20-25% alcohol by volume), which later stratified as microwebs on the liquid-air interface during evaporation. The web's strandlike features result from monolayer collapse, and the resulting pattern is a function of the intrinsic molecular constituents of the whiskey. Data suggest that, for our conditions (diluted 1.0 μL drops evaporated on cleaned glass substrates), whiskey webs were unique to diluted American whiskey; however, similar structures were generated with other whiskeys under different conditions. Further, each product forms their own distinct pattern, demonstrating that this phenomenon could be used for sample analysis and counterfeit identification.}, number={5}, journal={ACS NANO}, author={Carrithers, Adam D. and Brown, Martin J. and Rashed, Mohamed Z. and Islam, Sabina and Velev, Orlin D. and Williams, Stuart J.}, year={2020}, month={May}, pages={5417–5425} } @article{islam_inglefield_velev_2018, title={Revisiting the colloidal fundamentals of water-dispersible polyesters: interactions and self-assembly of polymer nanoaggregates in water}, volume={14}, ISSN={["1744-6848"]}, DOI={10.1039/c7sm02536j}, abstractNote={When suspended in water, polyester ionomers self-assemble into soft nanoaggregates, whose colloidal properties can be predicted by classical DLVO theory.}, number={11}, journal={SOFT MATTER}, author={Islam, Sabina and Inglefield, David L., Jr. and Velev, Orlin D.}, year={2018}, month={Mar}, pages={2118–2130} }