Outputs (8)

Lattice dynamics of polyaniline and poly(p-pyridyl vinyline): First-principles determination (2006)
Journal Article
Zheng, G., Clark, S., Brand, S., & Abram, R. (2006). Lattice dynamics of polyaniline and poly(p-pyridyl vinyline): First-principles determination. Physical review B, 74(16), https://doi.org/10.1103/physrevb.74.165210

First-principles density functional studies of the dynamical properties of the conjugated polymers polyaniline and poly(p-pyridyl vinyline) are presented in this work. We have employed linear response within density functional perturbation theory, as... Read More about Lattice dynamics of polyaniline and poly(p-pyridyl vinyline): First-principles determination.

Propagation of electromagnetic waves through a system of randomly placed cylinders: the partial scattering wave resonance (2006)
Journal Article
Kaliteevski, M., Beggs, D., Brand, S., Abram, R., Fletcher, J., Swift, G., & Chamberlain, J. (2006). Propagation of electromagnetic waves through a system of randomly placed cylinders: the partial scattering wave resonance. Journal of Modern Optics, 53(14), 2089-2097. https://doi.org/10.1080/09500340600799015

Propagation of electromagnetic waves through a system of randomly placed cylinders has been modelled. It was found that there is a dip in the ballistic transmission spectra for both the E and H polarizations, which is associated with scattering of th... Read More about Propagation of electromagnetic waves through a system of randomly placed cylinders: the partial scattering wave resonance.

Statistics of the eigenmodes and optical properties of one-dimensional disordered photonic crystals (2006)
Journal Article
Kaliteevski, M., Beggs, D., Brand, S., Abram, R., & Nikolaev, V. (2006). Statistics of the eigenmodes and optical properties of one-dimensional disordered photonic crystals. Physical review E: Statistical, nonlinear, and soft matter physics, 73(5), https://doi.org/10.1103/physreve.73.056616

The eigenmode spectrum and transmission properties of a certain class of one-dimensional disordered photonic crystals have been studied statistically. It is shown that the relative fluctuation of the optical width of the period of the photonic crysta... Read More about Statistics of the eigenmodes and optical properties of one-dimensional disordered photonic crystals.

Molecular dynamics calculations of the thermal expansion properties and melting points of Si and Ge (2006)
Journal Article
Timon, V., Brand, S., Clark, S., & Abram, R. (2006). Molecular dynamics calculations of the thermal expansion properties and melting points of Si and Ge. Journal of Physics: Condensed Matter, 18(13), 3489-3498. https://doi.org/10.1088/0953-8984/18/13/016

The thermal expansion properties and melting points of silicon and germanium are calculated using molecular dynamics simulations within the density functional theory framework. An isothermal–isobaric (NPT) ensemble is considered in a periodic system... Read More about Molecular dynamics calculations of the thermal expansion properties and melting points of Si and Ge.

Properties of two-dimensional photonic crystals with octagonal quasicrystalline unit cells (2006)
Journal Article
Roper, D., Beggs, D., Kaliteevski, M., Brand, S., & Abram, R. (2006). Properties of two-dimensional photonic crystals with octagonal quasicrystalline unit cells. Journal of Modern Optics, 53(3), 407-416. https://doi.org/10.1080/09500340500415076

The bandstructures of two-dimensional photonic crystals with octagonal quasicrystalline unit cells have been calculated. The existence of photonic band-gaps in such structures is demonstrated, and results showing the variation of the spectral positio... Read More about Properties of two-dimensional photonic crystals with octagonal quasicrystalline unit cells.

Stability of the photonic band gap in the presence of disorder (2006)
Journal Article
Kaliteevski, M., Beggs, D., Brand, S., Abram, R., & Nikolaev, V. (2006). Stability of the photonic band gap in the presence of disorder. Physical review B, 73(3), https://doi.org/10.1103/physrevb.73.033106

The photonic eigenmodes near a band gap of a type of one-dimensional disordered photonic crystal have been investigated statistically. For the system considered, it is found that the tail of the density of states entering the band gap is characterize... Read More about Stability of the photonic band gap in the presence of disorder.

THz frequency studies of metallic structures (2006)
Journal Article
Brand, S., Kaliteevski, M., & Abram, R. (2006). THz frequency studies of metallic structures. Proceedings of SPIE, 6328, 63280-63280. https://doi.org/10.1117/12.680313

A plane-wave complex photonic bandstructure approach is used to calculate the pass bands as a function of rod diameter for a system consisting of circular metallic rods in a 2-D square lattice. In addition, FDTD calculations are employed to calculate... Read More about THz frequency studies of metallic structures.

Enhanced THz transmission apertures through sub-wavelength annular apertures (2006)
Journal Article
Gallant, A., Levitt, J., Kaliteevski, M., Wood, D., Petty, M., Abram, R., …Chamberlain, J. (2006). Enhanced THz transmission apertures through sub-wavelength annular apertures. Proceedings of SPIE, 6323, https://doi.org/10.1117/12.680552

We report on the development of a surface micromachined process for the fabrication of coaxial apertures surrounded by periodic grooves. The process uses a combination of copper electroforming and the negative epoxy based resist, SU8, as a thin flexi... Read More about Enhanced THz transmission apertures through sub-wavelength annular apertures.