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You searched on: Topic Area: Chemical Physics

Displaying records 1 to 10 of 22 records.
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1. Impact of intrinsic backbone chain stiffness on the bottle-brush diblock copolymer morphology
Topic: Chemical Physics
Published: 8/5/2016
Authors: Panagiotis Theodorakis, Alexandros Chremos
Abstract: We investigate the role of the intrinsic backbone chain stiffness on the morphology behavior of bottle-brush diblock copolymers by using molecular dynamics simulations of a bead-spring coarse- grained model. We focus on bottle-brush having blocks ...

2. Depletion-Driven Crystallization of Cubic Colloids Sedimented on a Surface
Topic: Chemical Physics
Published: 5/19/2016
Authors: Harold Wickes Hatch, William P Krekelberg, Steven D Hudson, Vincent K Shen
Abstract: Cubic colloids, sedimented on a surface and immersed in a solution of depletant molecules, were modeled with a family of shapes which smoothly varies from squares to circles. Using Wang-Landau simulations with expanded ensembles, we observe the fo ...

3. Coherent cavity-enhanced dual-comb spectroscopy
Topic: Chemical Physics
Published: 5/4/2016
Authors: Adam J Fleisher, David A Long, Zachary D Reed, David F Plusquellic, Joseph Terence Hodges
Abstract: Multiheterodyne spectroscopy performed with two stabilized optical frequency combs (OFCs) has shown great potential as a fast, accurate, and high-resolution substitute for existing interferometry methods that require lengthy integration times and pre ...

4. Self-Assembly of Trimer Colloids: Effect of shape and interaction range
Topic: Chemical Physics
Published: 4/5/2016
Authors: Harold Wickes Hatch, Seung Y. Yang, Jeetain Mittal, Vincent K Shen
Abstract: Trimers with one attractive bead and two repulsive beads, similar to recently synthesized trimer patchy colloids, were simulated with flat-histogram Monte Carlo methods to obtain the stable self-assembled structures for different shapes and interac ...

5. Analysis of Several High-Resolution Bands of Spiropentane, C5H8
Topic: Chemical Physics
Published: 6/15/2015
Authors: Alfons Weber, A. Maki, J. E Price, Jared Harzan, J. W. Nibler, T. Masiello, T Blake
Abstract: The high resolution absorption spectrum of spiropentane (C5H8) from 200 cm-1 to 4000 cm−1 has been measured and a detailed analysis is presented for eight bands in the region from 700 cm−1 to 2200 cm−1. Two fundamental perpendicula ...

6. One-dimensional frequency-based spectroscopy
Topic: Chemical Physics
Published: 5/22/2015
Authors: Joseph Terence Hodges, A. Cygan, Piotr Wcislo, S. Wojtewicz, Piotr Maslowski, R. Ciurylo, D Lisak
Abstract: Recent developments in optical metrology have tremendously improved the precision and accuracy of the horizontal (frequency) axis in measured spectra. However, the vertical (typically absorbance) axis is usually based on intensity measurements tha ...

7. Long Working-Distance Optical Trap for in Situ Analysis of Contact-Induced Phase Transformations
Topic: Chemical Physics
Published: 5/11/2015
Authors: Joshua A Gordon, Ryan D Davis, Sara Lance, Margaret A Tolbert
Abstract: The development and characterization of a long working-distance optical trap to analyze a diverse range of particle phase transformations and crystal growth processes is described. Utilizing an upward propagating Gaussian beam and a down-ward propag ...

8. Computational Study of Trimer Self-Assembly and Fluid Phase Behavior
Topic: Chemical Physics
Published: 4/24/2015
Authors: Harold Wickes Hatch, Vincent K Shen, Jeetain Mittal
Abstract: The fluid phase diagram of trimer particles composed of one central attractive bead and two repulsive beads was determined as a function of simple geometric parameters using flat-histogram Monte Carlo methods. A variety of self-assembled structures ...

9. Identification of phase boundaries in surfactant solutions via Compton spectrum quenching,Identification of phase boundaries in surfactant solutions via Compton spectrum quenching
Topic: Chemical Physics
Published: 9/18/2014
Author: Denis E Bergeron
Abstract: The critical micelle concentration and the phase boundary between isolated surfactant molecules and aggregates are probed via fluorescence spectroscopy and a Compton spectrum quenching technique for aqueous and toluenic solutions of Triton X-100 (TX- ...

10. Mid-Infrared Time-Resolved Frequency Comb Spectroscopy of Transient Free Radicals
Topic: Chemical Physics
Published: 6/10/2014
Authors: Adam J Fleisher, Bryce Bjork, Thinh Q. Bui, Kevin C Cossel, Mitchio Okumura, Jun Ye
Abstract: Quantitative measurements in chemical kinetics require unambiguous determinations of reactant, intermediate, and product concentrations on time scales faster than the reaction rate. Direct absorption spectroscopy in the mid-infrared (mid-IR) can fulf ...

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