In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 44, No. 3L ( 2005-03-01), p. L402-
Abstract:
Dopant-induced laser ablation was applied to thin polystyrene- block -poly(4-vinylpyridine) (PS- b -P4VP) diblock copolymer films doped selectively with tetrakis(4-carboxyphenyl)porphine (TCPP) into the nanoscale spherical domain of P4VP-island parts. Under dry-film conditions, the ablation of the island parts was not induced. On the other hand, in methanol solvent, only the P4VP-island parts doped with TCPP were ablated selectively. The dopant-induced laser ablation is attributed to the fact that the P4VP-island parts are in the swollen state, where P4VP chains cross-linked by TCPP-dopant molecules exist with a high density in methanol. This is the first report concerning the site-selective laser ablation of diblock copolymer films.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.44.L402
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2005
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
Permalink