منابع مشابه
Core–Shell Plasmonic Nanohelices
We introduce core-shell plasmonic nanohelices, highly tunable structures that have a different response in the visible for circularly polarized light of opposite handedness. The glass core of the helices is fabricated using electron beam induced deposition and the pure gold shell is subsequently sputter coated. Optical measurements allow us to explore the chiral nature of the nanohelices, where...
متن کاملHierarchical structured nanohelices of ZnS.
Wurtzite-structured materials, such as ZnO, ZnS, GaN, and AlN, have an important characteristic: the presence of polar surfaces that result from cationor anion-terminated atomic planes. Consequently, a series of novel nanostructures, such as nanosprings, nanorings, nanohelices, and nanobows, have been formed. The mechanism that drives the formation of these novel configurations minimizes the el...
متن کاملSemiconductor nanohelices templated by supramolecular ribbons.
Nanohelices of cadmium sulfide (CdS) have been made by the mineralization of supramolecular organic ribbons. A schematic representation of how coiled CdS helices (yellow) can be templated from a twisted ribbon (blue) by growth along one face of the ribbon is shown top right.
متن کاملSuperelasticity and nanofracture mechanics of ZnO nanohelices.
A superelasticity (shape memory) behavior has been discovered for the superlattice-structured ZnO nanohelices. By in situ manipulation using a nanoprobe, the nanohelix could elastically recover its shape after an extremely large axial stretching to a degree close to the theoretical limit, while suffering little residual plastic deformation. As a result, its spring constant can be increased cont...
متن کاملConversion of zinc oxide nanobelts into superlattice-structured nanohelices.
A previously unknown rigid helical structure of zinc oxide consisting of a superlattice-structured nanobelt was formed spontaneously in a vapor-solid growth process. Starting from a single-crystal stiff nanoribbon dominated by the c-plane polar surfaces, an abrupt structural transformation into the superlattice-structured nanobelt led to the formation of a uniform nanohelix due to a rigid latti...
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ژورنال
عنوان ژورنال: ACS Photonics
سال: 2017
ISSN: 2330-4022,2330-4022
DOI: 10.1021/acsphotonics.7b00496