Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Alternative and Complementary Medicine (1)
- Bioelectrical and Neuroengineering (1)
- Biomaterials (1)
- Biomedical Devices and Instrumentation (1)
- Biomedical Engineering and Bioengineering (1)
-
- Catalysis and Reaction Engineering (1)
- Chemical Engineering (1)
- Computational Engineering (1)
- Life Sciences (1)
- Materials Science and Engineering (1)
- Mechanical Engineering (1)
- Medicine and Health Sciences (1)
- Nanoscience and Nanotechnology (1)
- Other Mechanical Engineering (1)
- Physical Sciences and Mathematics (1)
- Polymer and Organic Materials (1)
- Institution
- Keyword
-
- Aging (1)
- Aging rate (1)
- Architecture (1)
- Batteries (1)
- Branching (1)
-
- Catalase (1)
- Charge storage (1)
- Docker (1)
- Edible electronics (1)
- Enzyme (1)
- Fluid (1)
- Hydraulic (1)
- Melanin (1)
- Melanins (1)
- Microparticle (1)
- NFPA (1)
- Peptide-templated (1)
- Physical aging (1)
- Polystyrene (1)
- Raman (1)
- Reaction (1)
- SEM (1)
- Simulation (1)
- TOSSIM (1)
- Vehicle (1)
- Wireless Cyber-Physical Simulator(WCPS) (1)
Articles 1 - 6 of 6
Full-Text Articles in Engineering
Survey Of The Performance Of Gold Nanoparticles Within An Ssdna-Stabilized Biosensor For The Detection Of Hg2+, Madalyn Zagajowski
Survey Of The Performance Of Gold Nanoparticles Within An Ssdna-Stabilized Biosensor For The Detection Of Hg2+, Madalyn Zagajowski
Pence-Boyce STEM Student Scholarship
Methods
5 nm AuNPs were synthesized by combining solutions of HAuCl4 and sodium citrate, followed by dropwise addition of NaBH4 solution and aging for 24 hours. Additionally, Hg-bound poly(30)T ssDNA oligos were prepared by incubating with HgCl2 solution, with exonuclease I being added to denature unbound DNA. Aliquots of the AuNP solution were then treated with the ssDNA, either Hg-bound or non-Hg bound, and UV-vis and fluorescence spectra were taken of the samples with a Shimadzu UV-1280 spectrophotometer and a Hitachi F-2500 fluorescence spectrophotometer.
Results & Discussion
The UV-vis spectral data of the non-Hg bound AuNP/ssDNA complex samples did not …
Impact Of Chain Architecture On The Thickness Dependence Of Physical Aging Rate Of Thin Polystyrene Films, Gregory Brown, Elizabeth Lewis, Bryan D. Vogt
Impact Of Chain Architecture On The Thickness Dependence Of Physical Aging Rate Of Thin Polystyrene Films, Gregory Brown, Elizabeth Lewis, Bryan D. Vogt
Williams Honors College, Honors Research Projects
The dynamics of polymer thin films have been demonstrated to be significantly altered from the bulk, but the origins of such differences are not well defined. In this work, we seek to understand the differences in the structural dynamics (or physical aging) of polystyrene (PS) through branching and other well defined architectures (comb and centipede). The aging dynamics of ultrathin films (< 30 nm) differ from relatively thick films (100-150nm) with linear PS thin films aging more rapidly than the relatively “bulk-like” thick films. Ellipsometric measurements are used to characterize the physical aging rate of the films. The change in film thickness and refractive index as the films are held below the glass transition temperature (Tg) provides a simple measure of the physical aging. In this study, four different architectures (linear, comb, 4 arm star, and centipede) will be investigated. For each PS architecture, the aging rate will be determined for film …
Fluid Power Vehicle Competition, Madison Graham, Wayne Ritchie, Emily Dicks, Ariana Cupello
Fluid Power Vehicle Competition, Madison Graham, Wayne Ritchie, Emily Dicks, Ariana Cupello
Williams Honors College, Honors Research Projects
Our senior design project for the Honors College and the Department of Mechanical Engineering was to design a fluid powered vehicle. Our design was tested in an official capacity against other universities’ vehicles at the Fluid Powered Vehicle Challenge hosted and funded by the National Fluid Power Association (NFPA) and its industry partners. This competition had six different evaluations for our vehicle design; three race events, midway presentation, final presentation, and safety inspection. The three different race events were the sprint race, the efficiency race, and the endurance race. The sprint race was a 475 feet speed test, the efficiency …
Electrochemical And Spectroscopic Study Of Peptide-Template Melanins, Daniel Courter, Olivia Rossi, Zhen Tian
Electrochemical And Spectroscopic Study Of Peptide-Template Melanins, Daniel Courter, Olivia Rossi, Zhen Tian
Honors Theses and Capstones
Melanins are organic polymers made up of 5,6-dihydroxyindole carboxylic acid (DHICA) and 5,6-dihydroxyindole (DHI). Biochemical systems synthesize melanins through a complex reaction pathway. Previous research exhibited that naturally-occurring melanins (NatMel) and their synthetic analogues (SynMel) can potentially serve as electrode materials for aqueous charge storage devices. Small surface area creates technical challenges for these melanins as charge storage materials. This research herein demonstrates that the structure of melanins can affect the charge storage capacities of monovalent Na+cations and divalent Mg2+ cations. 2-D sheet-like peptide melanins (PepMel) were synthesized into tripeptides consisting of aspartic acid (D), phenylalanine (F), …
Enzyme-Catalyzed Reactions Using Enzymes Immobilized On Non-Spherical Particles, Alexander D. Redfearn
Enzyme-Catalyzed Reactions Using Enzymes Immobilized On Non-Spherical Particles, Alexander D. Redfearn
Honors Theses and Capstones
Modern and industrial chemical reactions often utilize enzyme-catalyzed reactions to increase product yields. Given the high cost of enzymes it is desirable to preserve the activity of the enzymes and reuse them several times. In this study, I explored the possibility of immobilizing enzymes on custom-made non-spherical SU-8 microparticles to conduct enzyme-catalyzed reactions in flow reactors. The decomposition of hydrogen peroxide using bovine liver catalase was studied due to its well-understood enzyme kinetics. Soft lithography techniques were used to synthesize prismatic SU-8 microparticles. I will discuss the progress that has been made in immobilizing the enzyme on the particle surface …
The Next Generation Of Wireless Cyber-Physical Simulator, Xinghan Wang, Kevin Xu
The Next Generation Of Wireless Cyber-Physical Simulator, Xinghan Wang, Kevin Xu
Undergraduate Research Symposium Posters
In order to make Wireless Cyber-Physical Simulator(WCPS) more accessible to people in the research community, and also to improve its accuracy of representing real industrial models, we worked on the dockerization of WCPS, and implemented the multi-rate feature for WCPS, enabling the simulator to have different network rate and plant rate when running a simulation. We created a new version of WCPS by dockerizing run-time libraries and the TOSSIM server and also embedding the multi-rate feature in the old version. This report includes the introduction and dockerization of WCPS, and shows the results of using the new generation of WCPS …