Raman enhancement in bowtie-shaped aperture-particle hybrid nanostructures fabricated with DNA-assisted lithography

Kabusure, Kabusure Mogasa; Piskunen, Petteri; Yang, Jiaqi; Linko, Veikko; Hakala, Tommi Kristian

doi:10.1039/d3nr00616f

Cited by 4 publications

(1 citation statement)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent studies have demonstrated the potential of combining top-down lithographic techniques with bottom-up (bio) chemical approaches to precisely control and position metallic nanoparticles and other biomaterials on macroscopic surfaces [12][13][14][15][16][17]. Of the various bottom-up methods, DNA origami nanotechnology has emerged as a promising approach for arranging nanoscale objects with a precision of 1-2 nm [13,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Positional control of DNA origami based gold dimer hybrid nanostructures on pre-structured surfaces

Liu,

Wang,

Guckel

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

This study explores important parameters for achieving a high-level positional control of DNA-nanoparticle hybrid structures by drop-casting onto a pre-structured silicon surface, in which the active adsorption sites were defined using electron beam lithography (EBL). By confining the adsorption sites to the scale of the DNA origami, we create multi-dimensional patterns and study the effect of diffusion and hybrid nanostructure concentration in the liquid on site occupation. We also propose a physical diffusion model that highlights the importance of surface diffusion in facilitating the adsorption of hybrid nanostructure onto active sites, particularly for two and one-dimensional adsorption sites. Our study shows prominent results of the hybrid nanostructure’s selective adsorption, indicating high adsorption efficiency and precise control over the position, as well as the spatial orientation. We anticipate similar results in related systems, both in terms of different surfaces and similar DNA structures. Overall, our findings offer promising prospects for the development of large-scale nanoarrays on micrometer-scale surfaces with nanometer precision and orientation control.

show abstract