Vibrational Modes of Nano-Template Viruses

Abstract

Viruses have recently attracted attention as biological templates for assembly of nanostructures and nanoelectronic circuits. They can be coated with metals, silica or semiconductor materials and form end-to-end nanorod assemblies. Such viruses as tobacco mosaic virus (TMV) and M13 bacteriophage have appropriate cylindrical shape and particularly suitable dimensions: M13 is 860 nm long and 6.5 nm in diameter, while TMV is 300 nm long, 18 nm in diameter and with a 4 nm in diameter axial channel. The knowledge of vibrational, i.e. quasi-acoustic phonon, modes of these viruses is important for material and structural characterization of the virus-based nano-templates and for in-situ control of the nanostructure self-assembly. In this paper we report on calculation of the dispersion relations for the lowest vibrational frequencies of TMV and M13 bacteriophage immersed in air and water. We analyze the damping of vibrations in water and discuss application of micro-Raman spectroscopy for control of the virus-based self-assembly processes.

Free vibration of biopolymer spherical shells of high structural heterogeneity

“…Therefore, for axisymmetric free vibration of a biopolymer spherical shell, for given parameters (µ, k s , R/h, G * /G, h 0 /h), one can determine the dimensionless nature frequencies from Eq. (13) or (20) for each value of n or k, respectively. Thus, there are total five natural frequencies associated with each pair (n, k).…”

“…(13) are denoted by Ω 1 , Ω 2 , Ω 3 (Ω 1 < Ω 2 < Ω 3 ), while the two frequencies of the torsional vibration modes determined by Eq. (20) are denoted by Ω 4 , Ω 5 (Ω 4 < Ω 5 ).…”

“…Motivated by this hypothesis, several groups investigated vibrational modes of viruses. 5,8,17,20 Ford 3 has reported theoretical estimates of vibrational frequencies of spherical virus particles using the liquid drop model and an elastic sphere model. Talati and Jha 4 used an elastic continuum model to calculate low-frequency vibrational modes of spherical viruses immersed in a medium.…”

Protein-Directed Synthesis of γ-Fe2O3Nanoparticles and Their Magnetic Properties Investigation

“…14 Moreover, some bio-scaffolds such as polysaccharide, 15 DNAs, 16 viruses, 17 proteins and peptides, [18][19][20] have been utilized in the synthesis of magnetic nanostructures.…”

Probing the low-frequency vibrational modes of viruses with Raman scattering—bacteriophage M13 in water

“…23 The longitudinal and transverse sound speeds were obtained from measurements of the lysozyme protein. 24 These values were also used by Fonoberov and Balandin 14,15 and Balandin and Fonoberov 25 in their pioneering work on tubular viruses. There is no certain method to determine the AIBP ratio ␣ C / ␣ S .…”