Browsing Chemical and Biomolecular Engineering by Title
Now showing items 6-25 of 139
-
Biochar and Microbial Signaling: Production Conditions Determine Effects on Microbial Communication
(2013)Charcoal has a long soil residence time, which has resulted in its production and use as a carbon sequestration technique (biochar). A range of biological effects can be triggered by soil biochar that can positively and ... -
Biocompatible Carbon Nanotube–Chitosan Scaffold Matching the Electrical Conductivity of the Heart
(2014)The major limitation of current engineered myocardial patches for the repair of heart defects is that insulating polymeric scaffold walls hinder the transfer of electrical signals between cardiomyocytes. This loss in signal ... -
Bottlebrush Copolymer Additives for Immiscible Polymer Blends
(2018)Thin films of immiscible polymer blends will undergo phase separation into large domains, but this behavior can be suppressed with additives that accumulate and adhere at the polymer/polymer interface. Herein, we describe ... -
Carbon nanotube fiber terahertz polarizer
(2016)Conventional, commercially available terahertz (THz) polarizers are made of uniformly and precisely spaced metallic wires. They are fragile and expensive, with performance characteristics highly reliant on wire diameters ... -
Carbon nanotube woven textile photodetector
(2018)The increasing interest in mobile and wearable technology demands the enhancement of functionality of clothing through incorporation of sophisticated architectures of multifunctional materials. Flexible electronic and ... -
Characterizing adsorption of associating surfactants on carbonates surfaces
(2018)HYPOTHESIS: The adsorption of anionic surfactants onto positively charged carbonate minerals is typically high due to electrostatic interactions. By blending anionic surfactants with cationic or zwitterionic surfactants, ... -
Characterizing Asphaltene Deposition in the Presence of Chemical Dispersants in Porous Media Micromodels
(2017)Asphaltenes are components in crude oil known to deposit and interrupt flows in critical regions during oil production, such as the wellbore and transportation pipelines. Chemical dispersants are commonly used to disperse ... -
Charged iodide in chains behind the highly efficient iodine doping in carbon nanotubes
(2017)The origin of highly efficient iodine doping of carbon nanotubes is not well understood. Relying on first-principles calculations, we found that iodine molecules (I2) in contact with a carbon nanotube interact to form ... -
Cofactor engineering for advancing chemical biotechnology
(2013)Cofactors provide redox carriers for biosynthetic reactions, catabolic reactions and act as important agents in transfer of energy for the cell. Recent advances in manipulating cofactors include culture conditions or ... -
Combined interfacial shear rheology and microstructure visualization of asphaltenes at air-water and oil-water interfaces
(2018)Asphaltenes are surface-active polyaromatic molecules in crude oil that are known to deposit in pipelines or stabilize water droplets by flocculating at interfaces resulting highly viscous emulsions, leading to significant ... -
Competing mechanisms and scaling laws for carbon nanotube scission by ultrasonication
(2012)Dispersion of carbon nanotubes (CNTs) into liquids typically requires ultrasonication to exfoliate individuals CNTs from bundles. Experiments show that CNT length drops with sonication time (or energy) as a power law t?m. ... -
Density functional study of dendrimer molecules in solvents of varying quality
(2018)Modified inhomogeneous statistical associating fluid theory (iSAFT) density functional theory is extended to dendrimer molecules in solvents of varying quality. The detailed structures of isolated dendrimers in implicit ... -
A density functional theory for patchy colloids based on Wertheim's association theory: Beyond the single bonding condition
(2013)In the framework of Wertheimﾒs theory, we develop the first classical density functional theory for patchy colloids where the patch can bond more than once. To test the theory we perform new Monte Carlo simulations for the ... -
Destabilization, Propagation, and Generation of Surfactant-Stabilized Foam during Crude Oil Displacement in Heterogeneous Model Porous Media
(2018)Foam flooding in porous media is of increasing interest due to its numerous applications such as enhanced oil recovery, aquifer remediation, and hydraulic fracturing. However, the mechanisms of oil-foam interactions have ... -
Differential Effect of Culture Temperature and Specific Growth Rate on CHO Cell Behavior in Chemostat Culture
(2014)Mild hypothermia condition in mammalian cell culture technology has been one of the main focuses of research for the development of breeding strategies to maximize productivity of these production systems. Despite the large ... -
Direct and indirect co-culture of chondrocytes and mesenchymal stem cells for the generation of polymer/extracellular matrix hybrid constructs
(2014)In this work, the influence of direct cell–cell contact in co-cultures of mesenchymal stem cells (MSCs) and chondrocytes for the improved deposition of cartilage-like extracellular matrix (ECM) within nonwoven fibrous ... -
Directing Assembly of DNA-Coated Colloids with Magnetic Fields To Generate Rigid, Semiflexible, and Flexible Chains
(2014)We report the formation of colloidal macromolecules consisting of chains of micron-sized paramagnetic particles assembled using a magnetic field and linked with DNA. The interparticle spacing and chain flexibility were ... -
Dynamic Self-Stiffening in Liquid Crystal Elastomers
(2013)Biological tissues have the remarkable ability to remodel and repair in response to disease, injury and mechanical stresses. Synthetic materials lack the complexity of biological tissues, and man-made materials that respond ... -
Dynamics of paramagnetic squares in uniform magnetic fields
(2016)The magnetic forces between paramagnetic squares cannot be calculated using a classic dipolar model because the magnetic field distribution is not uniform within square particles. Here, we present the calculation of magnetic ... -
Effect of Surfactant Partitioning Between Gaseous Phase and Aqueous Phase onﾠCO2ﾠFoam Transport for Enhanced Oil Recovery
(2016)CO2 flood is one of the most successful and promising enhanced oil recovery technologies. However the displacement is limited by viscous fingering, gravity segregation and reservoir heterogeneity. Foaming the CO2 and brine ...
