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Topic Area: Biological Physics
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Displaying records 1 to 10 of 17 records.
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1. Pb(II) Adsorption on Isostructural Hydrated Alumina and Hematite (0001) Sur faces: A DFT Study
Topic: Biological Physics
Published: 1/20/2009
Authors: Sara E. Mason, Christopher R. Iceman, Kunaljeet Tanwar, Thomas P. Trainor, Anne Marie Chaka
Abstract: The persistence of lead (Pb) in contaminated topsoil is ranked as one of the most serious environmental issues in the U.S. and other countries. Adsorption of Pb at the aqueous interface of nanoscale metal oxide and metal (oxy)hydroxide particles is ...

2. Characterization and Control of Lipid Layer Fluidity in Hybrid Bilayer Membranes
Topic: Biological Physics
Published: 1/31/2007
Authors: Neil A. Anderson, Lee J Richter, John C. Stephenson, Kimberly A Briggman
Abstract: The main gel-to-liquid-crystal (LC) phase transition temperature, Tm, of the distal lipid layer in hybrid bilayer membranes (HBMs) under water was investigated using vibrational sum frequency spectroscopy (VSFS). VSFS has unique sensitivity to order ...

3. Cholesterol/Phospholipid Interactions in Hybrid Bilayer Membranes
Topic: Biological Physics
Published: 5/25/2007
Authors: Dustin Levy, Kimberly A Briggman
Abstract: The interactions between cholesterol and saturated phospholipids in hybrid bilayer membranes (HBMs) were investigated using the interface-sensitive technique of vibrational sum frequency spectroscopy (VSFS). The unique sensitivity of VSFS to order/di ...

4. Conformational Effects on Excitonic Interactions in a Prototypical H-bonded Bichromophore: Bis(2-hydroxyphenyl)methane
Topic: Biological Physics
Published: 4/30/2009
Authors: David F Plusquellic, Nathan Pillsbury, Christian Mueller, Timothy Zwier
Abstract: Laser induced fluorescence (LIF), single vibronic level fluorescence, UV holeburning, and fluorescence-dip infrared (FDIR) spectroscopy have been carried out on bis-(2-hydroxyphenyl)methane (2HDPM) in order to characterize the ground and first excite ...

5. Determination of Lipid Phase Transition Temperatures in Hybrid Bilayer Membranes
Topic: Biological Physics
Published: 9/9/2006
Authors: Neil A. Anderson, Lee J Richter, John C. Stephenson, Kimberly A Briggman
Abstract: The main gel to liquid crystal (LC) phase transition temperature, Tm, of the lipid monolayers in hybrid bilayer membranes (HBMs) was investigated using vibrational sum frequency spectroscopy (VSFS). The unique sensitivity of VSFS to probe order/diso ...

6. Dipolar Chains formed by synthesized cobalt nanocubes
Topic: Biological Physics
Published: 5/11/2009
Authors: Guangjun Cheng, Robert D Shull, Angela R Hight Walker
Abstract: Cobalt nanocubes with an average edge length of 50 nm and the epsilon crystalline structure were synthesized via thermo-decomposition in 1,2-dichlorobenzene at 120 oC in the presence of the surfactants. These nanocubes form dipolar chains upon drying ...

7. Direct Measurement of Association and Dissociation Rates of DNA Binding in Live Cells by Fluorescence Correlation Spectroscopy
Topic: Biological Physics
Published: 7/1/2009
Authors: Ariel Michelman-Ribeiro, Davide Mazza, Tilman Rosales, Timothy J. Stasevich, Boukari Hacene, Vikas Rishi, Charles Vinson, Jay R. Knutson, James G. NcNally
Abstract: Measurement of live-cell binding interactions is vital for understanding the biochemical reactions that drive cellular processes. Here we develop, characterize and apply a new procedure to extract information about binding to an immobile substra ...

8. Generation and Mixing of Subfemtoliter Aqueous Droplets on Demand
Topic: Biological Physics
Published: 8/27/2009
Authors: Kristian Helmerson, Jianyong NMN Tang, Ana Jofre, Rani Kishore, Joseph Earl Reiner, Mark E Greene, Geoffrey M Lowman, John Denker, Christina NMN Willis, Lori Goldner
Abstract: We describe a novel method of generating monodisperse sub-femtoliter aqueous droplets on demand by means of piezoelectric injection. Droplets with volumes down to 200 aL are generated by this technique. The droplets are injected into a low refractive ...

9. Immobilization of Proteins on Carboxylic Acid-Functionalized Nanopatterns
Topic: Biological Physics
Published: 11/28/2012
Authors: John Peter Ngunjiri, Daniel Joshua Stark, Tian Tian, Kimberly A Briggman, Jayne C Garno
Abstract: The immobilization of proteins on nanopatterned surfaces was investigated using in situ atomic force microscopy (AFM) and ex situ infrared reflectance-absorption spectroscopy (IRAS). The AFM-based lithography technique of nanografting provided contro ...

10. Out-of-plane Stokes imaging polarimeter for early skin cancer diagnosis
Topic: Biological Physics
Published: 7/1/2012
Authors: P. Ghassemi, Paul Lemaillet, Thomas Avery Germer, J. W. Shupp, S. Venna, M. E. Boisvert, K. E. Flanagan, M. H. Jordan, J. C. Ramella-Roman
Abstract: Optimal treatment of skin cancer before it metastasizes depends critically on early diagnosis and treatment. Imaging spectroscopy and polarized remittance have been utilized in the past for diagnostic purposes, but valuable information can be also o ...

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