Abstract
DNA-programmable assembly has been used to prepare superlattices composed of octahedral and spherical nanoparticles, respectively. These superlattices have the same body-centered cubic lattice symmetry and macroscopic rhombic dodecahedron crystal habit but tunable lattice parameters by virtue of the DNA length, allowing one to study and determine the effect of nanoscale structure and lattice parameter on the light-matter interactions in the superlattices. Backscattering measurements and finite-difference time-domain simulations have been used to characterize these two classes of superlattices. Superlattices composed of octahedral nanoparticles exhibit polarization-dependent backscattering but via a trend that is opposite to that observed in the polarization dependence for analogous superlattices composed of spherical nanoparticles. Electrodynamics simulations show that this polarization dependence is mainly due to the anisotropy of the nanoparticles and is observed only if the octahedral nanoparticles are well-aligned within the superlattices. Both plasmonic and photonic modes are identified in such structures, both of which can be tuned by controlling the size and shape of the nanoparticle building blocks, the lattice parameters, and the overall size of the three-dimensional superlattices (without changing habit).
| Original language | English |
|---|---|
| Pages (from-to) | 2313-2318 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 17 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 12 2017 |
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Keywords
- anisotropic nanoparticles
- DNA-programmable assembly
- plasmonics
- polarization
ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
Cite this
Polarization-Dependent Optical Response in Anisotropic Nanoparticle-DNA Superlattices. / Sun, Lin; Lin, Haixin; Park, Daniel J.; Bourgeois, Marc R.; Ross, Michael B.; Ku, Jessie C.; Schatz, George C; Mirkin, Chad A.
In: Nano Letters, Vol. 17, No. 4, 12.04.2017, p. 2313-2318.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Polarization-Dependent Optical Response in Anisotropic Nanoparticle-DNA Superlattices
AU - Sun, Lin
AU - Lin, Haixin
AU - Park, Daniel J.
AU - Bourgeois, Marc R.
AU - Ross, Michael B.
AU - Ku, Jessie C.
AU - Schatz, George C
AU - Mirkin, Chad A.
PY - 2017/4/12
Y1 - 2017/4/12
N2 - DNA-programmable assembly has been used to prepare superlattices composed of octahedral and spherical nanoparticles, respectively. These superlattices have the same body-centered cubic lattice symmetry and macroscopic rhombic dodecahedron crystal habit but tunable lattice parameters by virtue of the DNA length, allowing one to study and determine the effect of nanoscale structure and lattice parameter on the light-matter interactions in the superlattices. Backscattering measurements and finite-difference time-domain simulations have been used to characterize these two classes of superlattices. Superlattices composed of octahedral nanoparticles exhibit polarization-dependent backscattering but via a trend that is opposite to that observed in the polarization dependence for analogous superlattices composed of spherical nanoparticles. Electrodynamics simulations show that this polarization dependence is mainly due to the anisotropy of the nanoparticles and is observed only if the octahedral nanoparticles are well-aligned within the superlattices. Both plasmonic and photonic modes are identified in such structures, both of which can be tuned by controlling the size and shape of the nanoparticle building blocks, the lattice parameters, and the overall size of the three-dimensional superlattices (without changing habit).
AB - DNA-programmable assembly has been used to prepare superlattices composed of octahedral and spherical nanoparticles, respectively. These superlattices have the same body-centered cubic lattice symmetry and macroscopic rhombic dodecahedron crystal habit but tunable lattice parameters by virtue of the DNA length, allowing one to study and determine the effect of nanoscale structure and lattice parameter on the light-matter interactions in the superlattices. Backscattering measurements and finite-difference time-domain simulations have been used to characterize these two classes of superlattices. Superlattices composed of octahedral nanoparticles exhibit polarization-dependent backscattering but via a trend that is opposite to that observed in the polarization dependence for analogous superlattices composed of spherical nanoparticles. Electrodynamics simulations show that this polarization dependence is mainly due to the anisotropy of the nanoparticles and is observed only if the octahedral nanoparticles are well-aligned within the superlattices. Both plasmonic and photonic modes are identified in such structures, both of which can be tuned by controlling the size and shape of the nanoparticle building blocks, the lattice parameters, and the overall size of the three-dimensional superlattices (without changing habit).
KW - anisotropic nanoparticles
KW - DNA-programmable assembly
KW - plasmonics
KW - polarization
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UR - http://www.scopus.com/inward/citedby.url?scp=85017539848&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.6b05101
DO - 10.1021/acs.nanolett.6b05101
M3 - Article
VL - 17
SP - 2313
EP - 2318
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 4
ER -