@article{dfac6c2dd42a434d9f4012983ce2d95a,
title = "Tunability of liquid-infused silicone materials for biointerfaces",
abstract = "The ability to control the properties of bio-inspired liquid-infused surfaces is of interest in a wide range of applications. Liquid layers created using oil-infused polydimethylsiloxane elastomers offer a potentially simple way of accomplishing this goal through the adjustment of parameters such as curing agent ratio and oil viscosity. In this work, the effect of tuning these compositional parameters on the properties of the infused polymer are investigated, including infusion dynamics, stiffness, longevity in the face of continuous liquid overlayer removal, and resistance to bacterial adhesion. It is found that that curing agent concentration appears to have the greatest impact on the functionality of the system, with a lower base-to-curing agent ratio resulting in both increased longevity and improved resistance to adhesion by Escherichia coli. A demonstration of how these findings may be implemented to introduce patterned wettability to the surface of the infused polymers is presented by controlling the spatial arrangement of bacteria. These results demonstrate a new degree of control over immobilized liquid layers and will facilitate their use in future applications.",
author = "Irini Sotiri and Amanda Tajik and Yang Lai and Zhang, {Cathy T.} and Yevgen Kovalenko and Nemr, {Carine R.} and Haylea Ledoux and Jack Alvarenga and Edythe Johnson and Patanwala, {Huseini S.} and Timonen, {Jaakko V.I.} and Yuhang Hu and Joanna Aizenberg and Caitlin Howell",
note = "Funding Information: The authors are very grateful to Michael Aizenberg for guidance and stimulating discussions, as well as Michael Kreder, Jonathan C. Overton, and Daniel Daniel for helpful advice, and W. Gramlich for technical feedback. This material is based upon work supported by the Defense Advanced Research Projects Agency Grant No. N66001-11-1-4180 and Contract No. HR0011-13-C-0025. Funding Information: Caitlin Howell is an Assistant Professor of Biomedical Engineering at the University of Maine. She began her career at the University of Maine, study-ing biology with a minor in mathematics and working in any research laboratory that would take her. After a brief experi-ence as an ornithology field hand in the Maine woods—where the birds and ecology PhD students were amazing but the bugs were most decidedly not—she landed in the laboratory of Professor Jody Jellison, a leader in the field of fungal wood decay. While proving herself through the enthusiastic washing of dirty glassware, she learned how to do real science from Dr. Jellison and her PhD student at the time, Jonathan Schilling. But above all, she learned how something that may not be very glamorous on the surface (like wood decay) can be fascinating when you look closer and start wondering why and how. In her senior year, she received the Ron Cockcroft award from the International Research Group on Wood Protection to travel to Troms{\o}, Norway to share the results of her research with the international community, as well as a National Science Foundation (NSF) Teaching Fellowship to share her newly discovered passion for science with over 80 local middle school students each week. Publisher Copyright: {\textcopyright} 2018 Author(s).",
year = "2018",
month = dec,
day = "1",
doi = "10.1116/1.5039514",
language = "English (US)",
volume = "13",
journal = "Biointerphases",
issn = "1559-4106",
publisher = "American Vacuum Society",
number = "6",
}