Results 21 to 30 of about 3,364 (187)

Zn-Porphyrin Nanoring as a CO Gas Sensor: A Fast Response and Short Recovery Time Sensor [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
The butadiyne-linked four-metalloporphyrin nanoring (Zn4P4) is a promising candidate in future nanoelectronic applications such as nanosensors for small gas molecules.
Sattar Arshadi   +2 more
doaj   +1 more source

Author Correction: Cycloparaazine, a full-azine carbon nanoring. [PDF]

open access: yesNat Commun
Drennhaus T   +11 more
europepmc   +2 more sources

Optical Enhancement by Gold Nanoring-Nanodisk Plasmonic Structures for Light Sensing Applications

open access: yesAl-Mustansiriyah Journal of Science, 2022
We design and numerically model a 3D nanoring-nanodisk structure and evaluate the effect of the ring and the disk radii size within the presented structure on optical enhancement.
Ahmad Aziz Darweesh   +2 more
doaj   +1 more source

Numerical investigation of plasmonic bowtie nanorings with embedded nanoantennas for achieving high SEIRA enhancement factors

open access: yesMaterials Research Express, 2022
This paper presents the numerical investigation of several complex plasmonic nanostructures — bowtie nanoring and crossed-bowtie nanoring nanoantennas with embedded bowtie nanoantennas and crossed-bowtie nanoantennas — for surface enhanced infrared ...
Aakansha Suchitta, Anuj Dhawan
doaj   +1 more source

Single-Acetylene Linked Porphyrin Nanorings [PDF]

open access: yesJournal of the American Chemical Society, 2017
The synthesis of ethyne-linked porphyrin nanorings has been achieved by template-directed Sonogashira coupling. The cyclic hexamer and octamer are predicted by density functional theory to adopt low symmetry conformations, due to dihedral twists between neighboring porphyrin units, but their symmetries are effectively D6h and D8h, respectively, in ...
Michel Rickhaus   +6 more
openaire   +3 more sources

Coarse Graining RNA Nanostructures for Molecular Dynamics Simulations [PDF]

open access: yes, 2010
A series of coarse-grained models have been developed for the study of the molecular dynamics of RNA nanostructures. The models in the series have one to three beads per nucleotide and include different amounts of detailed structural information.
Bruce A Shapiro   +6 more
core   +3 more sources

Optical Properties of Gold Nanorings [PDF]

open access: yesPhysical Review Letters, 2003
The optical response of ring-shaped gold nanoparticles prepared by colloidal lithography is investigated. Compared to solid gold particles of similar size, nanorings exhibit a redshifted localized surface plasmon that can be tuned over an extended wavelength range by varying the ratio of the ring thickness to its radius.
Aizpurua, Javier   +5 more
openaire   +3 more sources

Graphene nanoring as a tunable source of polarized electrons [PDF]

open access: yes, 2012
We propose a novel spin filter based on a graphene nanoring fabricated above a ferromagnetic strip. The exchange interaction between the magnetic moments of the ions in the ferromagnet and the electron spin splits the electronic states, and gives rise to
A V Malyshev   +5 more
core   +3 more sources

New synthesis route for high quality iron oxide-based nanorings: Structural and magnetothermal evaluations

open access: yesMaterials & Design, 2023
The present study reports on the successful fabrication of high quality monocrystallite magnetite (Fe3O4) nanorings, based on the transformation of monocrystallite hematite (α-Fe3O4) nanorings, using a wet and mild-temperature-mediated chemical route, as
V.R.R. Aquino   +5 more
doaj   +1 more source

Semiconductor nanoring lasers [PDF]

open access: yesApplied Physics Letters, 2011
Lasing in a subwavelength metal-clad nanoring resonator has been demonstrated with a tunable emission wavelength, controlled by the width of the ring. The emission wavelength is shown to be tunable within a 10 nm wavelength range by changing the ring width between 240 and 340 nm.
Kim, Min W., Ku, P.-C.
openaire   +2 more sources

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