nl8b00509_si_001.pdf (3.72 MB)
DNA-Mediated Size-Selective Nanoparticle Assembly for Multiplexed Surface Encoding
journal contribution
posted on 2018-03-23, 18:37 authored by Qing-Yuan Lin, Edgar Palacios, Wenjie Zhou, Zhongyang Li, Jarad A. Mason, Zizhuo Liu, Haixin Lin, Peng-Cheng Chen, Vinayak P. Dravid, Koray Aydin, Chad A. MirkinMultiplexed
surface encoding is achieved by positioning two different
sizes of gold nanocubes on gold surfaces with precisely defined locations
for each particle via template-confined, DNA-mediated nanoparticle
assembly. As a proof-of-concept demonstration, cubes with 86 and 63
nm edge lengths are assembled into arrangements that physically and
spectrally encrypt two sets of patterns in the same location. These
patterns can be decrypted by mapping the absorption intensity of the
substrate at λ = 773 and 687 nm, respectively. This multiplexed
encoding platform dramatically increases the sophistication and density
of codes that can be written using colloidal nanoparticles, which
may enable high-security, high-resolution encoding applications.
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gold surfacesencoding applicationsDNA-mediated nanoparticle assemblylocation687 nm63 nm edge lengthsDNA-Mediated Size-Selective Nanoparticle Assemblyproof-of-concept demonstrationgold nanocubesmultiplexed encoding platformMultiplexed Surface Encoding Multiplexed surface encodingpatternabsorption intensity
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