@inproceedings {villagonzalo-spp-2007,
	title = {Reduction of the thermal conductivity in a 1D superlattice},
	booktitle = {Proceedings of the 25th Samahang Pisika ng Pilipinas Physics Congress},
	year = {2007},
	month = {24{\textendash}26 Oct 2007},
	pages = {SPP-2007-022},
	address = {University of the Phlippines Los Ba{\~n}os, Laguna},
	abstract = {<div>Many technological applications require solids having very low thermal conductivity. This work demonstrates that this can be achieved for specific layer parameters in a superlattice. The phonon dispersion for thick or uneven layered superlattices is modeled using the harmonic approximation in one dimension (1D). The dispersion curves for superlattices with uneven thickness in layers are characterized by the disappearance of forbidden regions. These gaps are usually found in superlattices having uniform thickness. From these results and assuming a constant phonon mean free path, a marked decrease in the lattice contribution to the thermal conductivity is obtained as a function of layer thickness, mass ratio between the layers or asymmetry in its structure.</div>},
	author = {Cristine Villagonzalo and Jane Dizon}
}
@inproceedings {dizon-spp-2004,
	title = {Thermal conductivity in a one-dimensional superlattice},
	booktitle = {Proceedings of the 22nd Samahang Pisika ng Pilipinas Physics Congress},
	year = {2004},
	month = {25{\textendash}27 Oct 2004},
	pages = {155},
	address = {Bohol Tropics Resort, Tagbilaran City},
	abstract = {<div>We investigate the phonon thermal conductivity in a one-dimensional superlattice for transport perpendicular to the layers by utilizing analytic methods. A reduction on the thermal conductivity was observed when the layer thickness of the superlattice was increased. Difference in the mass ratio of the atoms in the chain and force constant ratio on alternating layers produced variations in the thermal conductivity. Higher difference of either of these two parameters results in the decrease of the thermal conductivity.</div>},
	author = {Jane Dizon and Cristine Villagonzalo}
}