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3-D Printed Microstructures With Zno Nanoflower For Antimicrobial Applications, Henry Yuqing
3-D Printed Microstructures With Zno Nanoflower For Antimicrobial Applications, Henry Yuqing
Theses
Many studies have been conducted to combat the bacterial infections problem by creating antimicrobial surfaces. However, the majority of them require complex manufacturing processes and expensive equipment. In this study, a cheaper and easy to be fabricated antimicrobial surface has been developed. First, a micropatterned 3D printed structure was fabricated. Then it was coated with zinc oxide (ZnO) nanoflower. The study demonstrated that micropatterned structure served as an “armor” to the nanostructure from plastic scraper and finger abrasion. To test the antimicrobial performance of the surface, the chip was immersed in 2E8 CFU/mL Escherichia coli (E. coli) suspension and incubated …
Towards A Robust And Long-Lasting Antimicrobial Surface, Justin A. Silva
Towards A Robust And Long-Lasting Antimicrobial Surface, Justin A. Silva
Theses
Bacterial adhesion to surfaces such as medical devices causes approximately 1.7 million infections and 75,000 deaths each year in the United States. Throughout the past several years, many studies have been conducted on micro- and nanostructure-enabled antimicrobial surfaces. However, this idea is controversial, as some studies have shown that superhydrophobic micro and nanostructures cannot prevent bacterial growth over time and that they are not a practical solution to reduce healthcare-related infections. The objective of this study is to develop a mechanically durable and long-lasting antimicrobial surface to prevent bacterial growth. High-aspect-ratio micro mushroom structures are fabricated by high resolution stereolithography …
Evaluation Of Natural Plant Powders With Potential Use In Antimicrobial Packaging Applications, Yujie Cheng
Evaluation Of Natural Plant Powders With Potential Use In Antimicrobial Packaging Applications, Yujie Cheng
Theses
This study investigates the antimicrobial effects of vanillin, turmeric and curcumin in packaging coating application. Reagent alcohol and DMSO were introduced as two solutions for the three antimicrobial agents. The coating solutions involving these three antimicrobial agents are: vanillin/ Reagent alcohol (10, 5, 2.5 and 1.25% (w/w)), vanillin/DMSO (10, 5, 2.5, 1.25, 0.625 and 0.3125% (w/w)), turmeric/ Reagent alcohol (10, 5, 2.5 and 1.25% (w/w)), turmeric/DMSO (10, 5, 2.5, 1.25, 0.625 and 0.3125% (w/w)), curcumin/ Reagent alcohol (10, 5, 2.5 and 1.25 (w/w)) and curcumin/DMSO (10, 5, 2.5, 1.25, 0.625 and 0.3125% (w/w)). The antimicrobial activity effects of the aforementioned …