Author(s): Shen, Boxuan ; Linko, Veikko ; Tapio, Kosti ; Pikker, Siim ; Lemma, Tibebe [UNESP] ; Gopinath, Ashwin ; Gothelf, Kurt V. ; Kostiainen, Mauri A. ; Toppari, J. Jussi
Date: 2018
Persistent ID: http://hdl.handle.net/11449/160144
Origin: Oasisbr
Made available in DSpace on 2018-11-26T15:47:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-02-01
Academy of Finland
Jane and Aatos Erkko Foundation
Finnish Cultural Foundation
Emil Aaltonen Foundation
Academy of Finland Centres of Excellence Programme
U.S. Office of Naval Research
Finnish Academy of Science and Letters (Vilho, Yrjo and Kalle Vaisala Foundation)
Programmable self-assembly of nucleic acids enables the fabrication of custom, precise objects with nanoscale dimensions. These structures can be further harnessed as templates to build novel materials such as metallic nanostructures, which are widely used and explored because of their unique optical properties and their potency to serve as components of novel metamaterials. However, approaches to transfer the spatial information of DNA constructions to metal nanostructures remain a challenge. We report a DNA-assisted lithography (DALI) method that combines the structural versatility of DNA origami with conventional lithography techniques to create discrete, well-defined, and entirely metallic nanostructures with designed plasmonic properties. DALI is a parallel, high-throughput fabrication method compatible with transparent substrates, thus providing an additional advantage for optical measurements, and yields structures with a feature size of similar to 10 nm. We demonstrate its feasibility by producing metal nanostructures with a chiral plasmonic response and bowtie-shaped nano-antennas for surface-enhanced Raman spectroscopy. We envisage that DALI can be generalized to large substrates, which would subsequently enable scale-up production of diverse metallic nanostructures with tailored plasmonic features.
Univ Jyvaskyla, Dept Phys, Nanosci Ctr, POB 35, Jyvaskyla 40014, Finland
Aalto Univ, Dept Bioprod & Biosyst, Biohybrid Mat, Aalto 00076, Finland
Aalto Univ, Dept Appl Phys, HYBER Ctr Excellence, Aalto 00076, Finland
CALTECH, Dept Bioengn, Pasadena, CA 91125 USA
Aarhus Univ, Interdisciplinary Nanosci Ctr, iNANO, Ctr DNA Nanotechnol, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
Aarhus Univ, Dept Chem, Langelandsgade 140, DK-8000 Aarhus C, Denmark
Univ Estadual Paulista, Fac Ciencias & Tecnol, Dept Fis, BR-19060900 Presidente Prudente, SP, Brazil
Univ Estadual Paulista, Fac Ciencias & Tecnol, Dept Fis, BR-19060900 Presidente Prudente, SP, Brazil
Academy of Finland: 130900
Academy of Finland: 263526
Academy of Finland: 286845
Academy of Finland: 289947
Academy of Finland: 135193
Academy of Finland: 218182
U.S. Office of Naval Research: N000141410702
