Asset Details
Do you wish to reserve the book?
High-strength magnetically switchable plasmonic nanorods assembled from a binary nanocrystal mixture
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
High-strength magnetically switchable plasmonic nanorods assembled from a binary nanocrystal mixture
Do you wish to request the book?
High-strength magnetically switchable plasmonic nanorods assembled from a binary nanocrystal mixture
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
High-strength magnetically switchable plasmonic nanorods assembled from a binary nanocrystal mixture
2017
Overview
Two crystalline nanocrystals with superparamagnetic and plasmonic properties form mechanically strong hybrid nanorods with dual functionality.
Next-generation ‘smart’ nanoparticle systems should be precisely engineered in size, shape and composition to introduce multiple functionalities, unattainable from a single material
1
,
2
,
3
. Bottom-up chemical methods are prized for the synthesis of crystalline nanoparticles, that is, nanocrystals, with size- and shape-dependent physical properties
4
,
5
,
6
, but they are less successful in achieving multifunctionality
7
,
8
,
9
. Top-down lithographic methods can produce multifunctional nanoparticles with precise size and shape control
2
,
3
,
10
,
11
, yet this becomes increasingly difficult at sizes of ∼10 nm. Here, we report the fabrication of multifunctional, smart nanoparticle systems by combining top-down fabrication and bottom-up self-assembly methods. Particularly, we template nanorods from a mixture of superparamagnetic Zn
0.2
Fe
2.8
O
4
and plasmonic Au nanocrystals. The superparamagnetism of Zn
0.2
Fe
2.8
O
4
prevents these nanorods from spontaneous magnetic-dipole-induced aggregation, while their magnetic anisotropy makes them responsive to an external field. Ligand exchange drives Au nanocrystal fusion and forms a porous network, imparting the nanorods with high mechanical strength and polarization-dependent infrared surface plasmon resonances. The combined superparamagnetic and plasmonic functions enable switching of the infrared transmission of a hybrid nanorod suspension using an external magnetic field.
Publisher
Nature Publishing Group UK,Nature Publishing Group
