@inproceedings {552,
	title = {Characterization of phonon density of states of a graphene junction beyond nearest neighbor interactions},
	booktitle = {Proceedings of the 38th Samahang Pisika ng Pilipinas Physics Conference},
	year = {2020},
	month = {19{\textendash}23 Oct 2020},
	pages = {SPP-2020-4G-05},
	address = {Presented online},
	abstract = {Graphene has exceptional thermal properties that has presented a wide range of applications. Ballistic thermal transport in graphene due to phonons was made possible by placing a zigzag graphene junction in the middle of a heat sink and a heat source- which induced a temperature gradient that caused heat to flow through the junction. Following the harmonic oscillator model for the graphene junction, interlayer and intralayer interactions were derived beyond nearest neighbors. This paper aims to characterize the zigzag graphene junction{\textquoteright}s phonon density of states and examine the effects of adding next nearest neighbors and varying the bond stretching force constant, ks, on the next nearest neighbor interactions. We observed a wider distribution of energies when adding next nearest neighbor interactions at equal ks. Varying ks showed similar results as this indicates the strength of interaction between the next nearest neighboring atoms.},
	url = {https://paperview.spp-online.org/proceedings/article/view/SPP-2020-4G-05},
	author = {Krishna Lyn Delima and Cristine Villagonzalo}
}
@inproceedings {delimaSPP2019,
	title = {Interlayer and intralayer interactions in a graphene junction beyond nearest neighbors},
	booktitle = {Proceedings of the 37th Samahang Pisika ng Pilipinas Physics Conference},
	year = {2019},
	month = {29 May 2019},
	pages = {SPP-2019-PB-34},
	address = {Tagbilaran City, Philippines},
	abstract = {The potential applications of the ballistic property of the thermal transport due to phonons in a zigzag graphene junction has prompted scientists to study the material{\textquoteright}s thermal properties. A zigzag graphene junction placed between a heat source and a heat sink has an induced temperature gradient wherein ballistic thermal transport becomes possible. Thermal transport studies for this system are usually characterized at the molecular level by nearest neighbor interactions between the carbon atoms within the junction. This paper aims to derive interlayer and intralayer interactions beyond nearest neighbors using a harmonic interaction potential and highlight their effects. We successfully determined these interactions by taking the Hamiltonian interaction matrix and illustrated a systematic way to add more interactions between graphene interlayers.},
	url = {https://paperview.spp-online.org/proceedings/article/view/SPP-2019-PB-34},
	author = {Krishna Lyn Delima and Cristine Villagonzalo}
}