Site-selective integration of monolayer-protected inorganic nanoparticles onto surface monolayer templates by a solvent-induced lift-off process

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Volumn 2, Issue 10, 2006, Pages 1130-1133

  Akamatsu, Kensuke ^a   Samitsu, Shoji ^a   Tsuruoka, Takaaki ^a   Hasegawa, Jun ^a   Nawafune, Hidemi ^a  

^a KONAN UNIVERSITY   (Japan)

Author keywords

Gold; Lift off processes; Nanoparticles; Pattern formation; Surface modification

Indexed keywords

GRANULAR MATERIALS; INORGANIC COMPOUNDS; INTEGRATION; SOLVENTS; SURFACE TREATMENT;

LIFT OFF PROCESS; MICROFABRICATED DEVICES; NANOGRANULAR FILM; PATTERN FORMATION;

NANOSTRUCTURED MATERIALS;

GOLD; METAL NANOPARTICLE; METHANOL; NANOMATERIAL; NANOPARTICLE; SILICON; SOLVENT; WATER;

ARTICLE; ATOMIC FORCE MICROSCOPY; CHEMISTRY; CRYSTALLIZATION; INSTRUMENTATION; METHODOLOGY; NANOTECHNOLOGY; SCANNING ELECTRON MICROSCOPY; SURFACE PROPERTY; TRANSMISSION ELECTRON MICROSCOPY;

CRYSTALLIZATION; GOLD; METAL NANOPARTICLES; METHANOL; MICROSCOPY, ATOMIC FORCE; MICROSCOPY, ELECTRON, SCANNING; MICROSCOPY, ELECTRON, TRANSMISSION; NANOPARTICLES; NANOSTRUCTURES; NANOTECHNOLOGY; SILICON; SOLVENTS; SURFACE PROPERTIES; WATER;

EID: 33748581010     PISSN: 16136810     EISSN: 16136829     Source Type: Journal    
DOI: 10.1002/smll.200600171     Document Type: Article

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27. The resolution of patterns also depends on other experimental conditions. Large amounts of gold nanoparticles in solution during processing gave thick granular films (e.g., a few tens of micrometers in thickness) on the substrate with patterned monolayer templates. In this case, when the obtained granular films were washed with water or chloroform, patterns were generated but the edge of the remaining films was discontinuous. Therefore, the concentration of gold nanoparticles in solution plays an important role for determining the resolution of the patterns and should be optimized to achieve high-quality micro-patterns, depending on the feature size of the predesigned monolayer templates.
28. In this experiment, methanol (90 μL) was first dropped onto the substrate. An additional drop of methanol containing MUA-protected Au nanoparticles (10 μL) was subsequently dropped onto the substrate. The sample was then dried at 60°C.