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Displaying 26 - 50 of 1922

The Role of Side Chains and Hydration on Mixed Charge Transport in n-type Polymer Films

March 30, 2025
Author(s)
Lucas Flagg, Lee Richter, Jokubas Surgailis, Victor Druet, Sophie Griggs, Xiaocui Wu, Stefania Moro, David Ohayon, Christina Kousseff, Adam Marks, Iuliana Petruta Maria, Hu Chen, Maximilian Moser, Giovanni Costantini, Iain McCulloch, Sahika inal
Introducing polar ethylene glycol (EG) side chains to a conjugated polymer backbone is a well-established synthetic strategy to design organic mixed ion-electron conductors (OMIECs). However, the impact that film swelling has on mixed conduction properties

Marine debris impacts on Hawaiian green sea turtles (Chelonia mydas): High prevalence of hook-and-line fishing gear in strandings

March 29, 2025
Author(s)
Marthe Hoiberg, Jan Borgelt, Philip Mostert, Shawn Murakawa, Summer Martin, Jon Gelman, Jennifer Lynch, Francesca Verones
Stranding data are critical for monitoring threats to sea turtles. By analyzing four decades of green turtle (Chelonia mydas) strandings from the Main Hawaiian Islands, we elucidate temporal and spatial trends. In Hawai'i, fibropapillomatosis (FP) has been

Rheology and Microstructural Behavior of Semidilute Suspensions of Semiflexible Rods across Five Decades of Shear Rate

February 18, 2025
Author(s)
Paul Salipante, Ryan Murphy, Steve Kuei, Jeffrey Fagan, Christopher Sims, Kathleen Weigandt, Steven Hudson
Rod-like particles are efficient rheology modifiers and are commonly found in a variety of biological and industrially relevant suspensions, from biofilaments to worm-like surfactant micelles. These suspensions display strong shear-thinning behavior, and

Simulated inter-filament fusion in embedded 3D printing

November 15, 2024
Author(s)
Leanne Friedrich, Ross Gunther
In embedded 3D printing (EMB3D), a nozzle extrudes continuous filaments inside of a viscoelastic support bath. Compared to other extrusion processes, EMB3D enables softer structures and print paths that conform better to the shape of the part. However

An easy to implement strategy for improving operational stability and controlling threshold voltage in organic electrochemical transistors: Combining chemical p-doping with degassed solvents

November 4, 2024
Author(s)
Vianna N. Le, Kyle N. Baustert, Megan Brown, Joel H. Bombile, Lucas Flagg, Karl Thorley, Alyssa Stubbers, Christina J. Kousseff, Olga Solomeshch, T. John Balk, Iain McCulloch, Nir Tessler, Chad Risko, Kenneth R. Graham, Alexandra F. Paterson
Although p-type organic mixed ionic electronic conductors (OMIECs) are susceptible to oxidation, it has not yet been considered as to whether oxygen, solvent degradation products, or degradation products formed in the solvent in the presence of oxygen

Two-fluid model for nonlinear flow of wormlike micelle solutions. I: Model

November 1, 2024
Author(s)
Paul Salipante, Michael Cromer, Steven D. Hudson
We develop a rheological model to approximate the nonlinear rheology of wormlike micelles using two constitutive models to represent a structural transition at high shear rates. The model is intended to describe the behavior of semidilute wormlike micellar

Two-fluid model for nonlinear flow of wormlike micelle solutions. II: Experiment

November 1, 2024
Author(s)
Paul Salipante, Michael Cromer, Steven D. Hudson
Applications often expose wormlike micelle solutions to a very wide range of shear and temperature conditions. The two-species model presented in Part I [Salipante et al., J. Rheol. 68 (2024)] describes the nonlinear rheology over a wide range of shear

Correlation of Structure and Morphology in an Ethylene-glycol Side-chain Modified Polythiophene via Combined X-ray Scattering and Four-dimensional Scanning Transmission Electron Microscopy

October 10, 2024
Author(s)
Andrew Herzing, Lucas Flagg, Chad R. Snyder, Lee Richter, Jonathan Onorato, Christine Luscombe, Ruipeng Li
We report the results of a combined grazing incidence wide-angle X-ray scattering (GIWAXS) and four-dimensional scanning transmission microscopy (4D-STEM) analysis of the effects of thermal processing on poly(3[2-(2-methoxyethoxy)ethoxy]-methylthiophene- 2

Visualizing Shockwave Interactions and Sub-Catastrophic Damage in Materials via Mechanophores

October 7, 2024
Author(s)
Polette Centellas, Kyle Mehringer, Andrew Bowman, Katherine Evans, Parth Vagholkar, Travis Thornell, Liping Huang, Sarah Morgan, Christopher Soles, Yoan Simon, Edwin Chan
Understanding the physical and chemical response of materials to impulsive deformation is crucial for applications ranging from soft robotic locomotion to space exploration to seismology. However, investigating material properties at extreme strain rates

Effects of Weathering and Formulation on the Properties of Vinyl Siding

September 23, 2024
Author(s)
Ronald Lankone, Mauro Zammarano, Song Jhang, Ickchan Kim, David Goodwin, Gianluca Sarti, Stefano Gardi, Camillo Cardelli, Lipiin Sung
Vinyl siding has become a popular choice for residential exteriors across the United States. In its insulated form, this siding includes a shell, capstock, and substrate, that encase a foamed material, serving as an efficient insulating material. While it

Structure Development in Cross-Linked, Soybean Oil-based Waterborne Polyurethanes

August 16, 2024
Author(s)
Zoran S Petrovic, Jasna Djonlagic, Jian Hong, Milica Vukovic, Jan Ilavsky, Brian Bush, Fan Zhang
Development of waterborne polyurethanes (WPU) using bio-based sources represents a step towards sustainable materials science and industry. We synthesized bio-based cationic water-dispersed crosslinked polyurethanes from high oleic soybean oil (HOSO)

The Block Copolymer Phase Behavior Database

August 10, 2024
Author(s)
Nathan Rebello, Akash Arora, Hidenobu Mochigase, Tzyy-Shyang Lin, Debra Audus, Bradley Olsen
The Block Copolymer Database (BCDB) is a platform that allows users to search, submit, visualize, benchmark, and download experimental phase measurements and their associated characterization information for di- and multiblock copolymers. To the best of

Additive Manufacturing of Highly Entangled Polymer Networks

August 1, 2024
Author(s)
Abhishek Dhand, Matthew Davidson, Hannah Zlotnick, Thomas Kolibaba, Jason Killgore, Jason Burdick
Incorporation of polymer chain entanglements within a single network can synergistically improve stiffness and toughness, yet attaining such dense entanglements through vat photopolymerization additive manufacturing (e.g., digital light processing, DLP)
Displaying 26 - 50 of 1922
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