OYO BUTURI
Vol.88
No.3
2019
3
20193883

OYO BUTURI Vol.88 No.3 (2019)

Crystal growth/Process engineering and their applications for development of functional materials

Cover of OYO BUTURI Vol.88 No.3 (2019)
Cover photo of OYO BUTURI Vol.88 No.3 (2019)

The calculated results of phonon dispersion relations and the density of states of a peapod where fullerene is closely packed within a carbon nano-tube (CNT). The induced periodic distortion (swell) turns the CNT into an artificial superlattice, with the unit cell indicated by the dashed lines in the drawing, which gives rise to zone folding and consequently reduces the thermal conductivity. As such, research that controls the transport of thermal phonons (as particles and waves) using a nanoscale structure has become widely utilized and its development as the field of “phonon engineering” is expected. (p.189)