Phononics and Micromechanics of Bio-Colloidal Wiseana Iridovirus

Author

Xiong, Huiming ; Hartschuh, Ryan D. ; Wargacki, Stephen P. ; Neiswinger, Johnathan ; Kisliuk, Alexander ; Sihn, Sangwook ; Ward, Vernon K. ; Vaia, Richard A. ; Sokolov, Alexei P.

Author_Institution

Dept. of Polymer Sci., Univ. of Akron, Akron, OH

fYear

2008

fDate

18-21 Aug. 2008

Firstpage

638

Lastpage

639

Abstract

By using Brillouin light scattering (BLS), we have investigated phononic properties of Wiseana iridovirus (WIV) assemblies and dispersed individual viruses at hypersonic frequency window. Propagating modes in virus assemblies and localized vibrational eigenmodes of individual virus have been identified. Based on phonon spectra, Young´s modulus of the virus has been estimated to be ~ 7 GPa, suggesting that the WIV virions are mechanically more similar to their DNA cores than to their capsid (protein) shells. The results also indicate that viral colloids are mechanically coupled during assembly in contrast to a system of synthetic polymeric colloids.

Keywords

Brillouin spectra; DNA; Young´s modulus; bio-optics; biomechanics; cellular biophysics; colloids; eigenvalues and eigenfunctions; micromechanics; microorganisms; molecular biophysics; phonons; proteins; Brillouin light scattering; DNA; Wiseana iridovirus; Young´s modulus; biocolloids; capsid shells; micromechanics; phonon spectra; phononics; propagating modes; protein; vibrational eigenmodes; viral colloids; viruses; Assembly; Brillouin scattering; DNA; Frequency; Light scattering; Optical propagation; Phonons; Proteins; Vibrations; Viruses (medical);

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2008. NANO '08. 8th IEEE Conference on

Conference_Location

Arlington, Texas

Print_ISBN

978-1-4244-2103-9

Electronic_ISBN

978-1-4244-2104-6

Type

conf

DOI

10.1109/NANO.2008.193

Filename

4617175