Nielsen, Steven O.
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Dr. Stephen Nielsen joined the faculty of the Department of Chemistry in 2005. The overarching theme of his research is the theoretical description and molecular dynamics simulation of interfaces. His primary focus is on the curvature-dependent properties of interfaces. Major projects include the peptide solubilization of carbon nanotubes, the behavior of nanoparticles in fluids and at fluid Interfaces, and the free energy of phase transformations between different lipid self-assemblies. In addition, he develops new simulation tools including multiscale modeling algorithms and serves as head of the Nielsen Research Group.
Learn more about Professor Nielsen's work at his Department of Chemistry, Research Group and Research Explorer pages.
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Recent Submissions
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Supramolecular and Biomacromolecular Enhancement of Metal-Free Magnetic Resonance Imaging Contrast Agents
Many contrast agents for magnetic resonance imaging are based on gadolinium, however side effects limit their use in some patients. Organic radical contrast agents (ORCAs) are potential alternatives, but are reduced rapidly ... -
Ultrafast Pulsed Laser Induced Nanocrystal Transformation in Colloidal Plasmonic Vesicles
Plasmonic vesicle consists of multiple gold nanocrystals within a polymer coating or around a phospholipid core. As a multifunctional nanostructure, it has unique advantages of assembling small nanoparticles (< 5 nm) for ... -
Hydrophilic Directional Slippery Rough Surfaces for Water Harvesting
Multifunctional surfaces that are favorable for both droplet nucleation and removal are highly desirable for water harvesting applications but are rare. Inspired by the unique functions of pitcher plants and rice leaves, ... -
Nested Sampling of Isobaric Phase Space for the Direct Evaluation of the Isothermal-Isobaric Partition Function of Atomic Systems
Nested Sampling (NS) is a powerful athermal statistical mechanical sampling technique that directly calculates the partition function, and hence gives access to all thermodynamic quantities in absolute terms, including ... -
Towards an Understanding of Structure-Nonlinearity Relationships in Triarylamine-based Push-Pull Electro-Optic Chromophores: The Influence of Substituent and Molecular Conformation on Molecular Hyperpolarizabilities
(Royal Soc Chemistry, 2014-02-17)We calculated the second-order hyperpolarizability (beta) of a series of triarylamine (TAA) based donor-bridge-acceptor (D-π-A) push-pull type nonlinear optical (NLO) chromophores with different electron donor moieties and ... -
A Guiding Potential Method for Evaluating the Bending Rigidity of Tensionless Lipid Membranes from Molecular Simulation
(2013-07-18)A new method is proposed to estimate the bending rigidity of lipid membranes from molecular dynamics simulations. An external cylindrical guiding potential is used to impose a sinusoidal deformation to a planar membrane. ... -
Effects Of Spherical Fullerene Nanoparticles On A Dipalmitoyl Phosphatidylcholine Lipid Monolayer: A Coarse Grain Molecular Dynamics Approach
(Royal Society of Chemistry, 2012-07-30)The effect of carbon-based nanoparticles (CNPs) on biological systems is currently of great concern. Yet, few experimental techniques are capable of directly imaging and probing the energetics of such nano-bio systems. ... -
Modifying the Electronic Properties of Single-Walled Carbon Nanotubes using Designed Surfactant Peptides
(2012-05-25)The electronic properties of carbon nanotubes can be altered significantly by modifying the nanotube surface. In this study, single-walled carbon nanotubes (SWCNTs) were functionalized noncovalently using designed surfactant ...
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