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Fluorescent Quantum Dots and Its Composites for Highly Sensitive Detection of Heavy Metal Ions and Pesticide Residues: A Review

open access: yesChemosensors, 2023
Quantum dots nanomaterials have attracted extensive interest for fluorescence chemical sensors due their attributes, such as excellent optical characteristics, quantum size effects, interface effects, etc. Moreover, the fluorescence properties of quantum
Zhezhe Wang   +4 more
doaj   +1 more source

Investigation of carbon nanotube quantum dots connected to ferromagnetic leads [PDF]

open access: yes, 2015
The implementation of ferromagnetic contacts in complex nanoelectronic devices, e.g. in spin-valves bears great potential for applications and fundamental investigations. Spin-valves are structures with two magnetic contacts and a non-magnetic medium (
Samm, Julia
core   +1 more source

Spins, disorder and interactions in GaAs and graphene [PDF]

open access: yes, 2012
This thesis describes experiments on semiconductor spin physics under the influence of diverse disorder and carrier-carrier interaction. Motivated by recent observations of GaAs spin qubit coherence limited by hyperfine coupling to nuclear-spin en ...
Kölbl, Dominikus
core   +1 more source

Thermally activated charge fluctuations in GaAs double quantum dots [PDF]

open access: yes, 2014
In this thesis, laterally defined GaAs quantum dots and double quantum dots are investigated by means of real-time charge sensing. A quantum dot charge sensor, adjacent to the investigated double dot system, detects single electron tunneling with ...
Biesinger, Daniel Erich Fridolin
core   +1 more source

Graphene-Quantum-Dot-Mediated Semiconductor Bonding: A Route to Optoelectronic Double Heterostructures and Wavelength-Converting Interfaces

open access: yesC, 2020
A semiconductor bonding technique that is mediated by graphene quantum dots is proposed and demonstrated. The mechanical stability, electrical conductivity, and optical activity in the bonded interfaces are experimentally verified.
Kosuke Nishigaya   +2 more
doaj   +1 more source

Nanomaterials 2021 Best Paper Awards: Announcement and Interview with the Winner

open access: yesNanomaterials, 2021
After an extensive voting period, we are proud to present the Best Paper Award to “Carbon Dots and Graphene Quantum Dots in Electrochemical Biosensing [...]
Nanomaterials Editorial Office
doaj   +1 more source

As-grown carbon nanotube quantum dots with superconducting contacts [PDF]

open access: yes, 2014
The progress in fabrication technology and the miniaturization of nanostructured devices in the recent past has attracted a lot of interest in the field of electronic circuits on the nanoscale where the system's spatial dimensions allow for the ...
Nau, Stefan
core   +1 more source

Quantum Dots in Graphene Nanoribbons

open access: yesNano Letters, 2017
Graphene quantum dots (GQDs) hold great promise for applications in electronics, optoelectronics, and bioelectronics, but the fabrication of widely tunable GQDs has remained elusive. Here, we report the fabrication of atomically precise GQDs consisting of low-bandgap N = 14 armchair graphene nanoribbon (AGNR) segments that are achieved through edge ...
Shiyong Wang   +7 more
openaire   +4 more sources

Making Graphene Luminescent by Oxygen Plasma Treatment [PDF]

open access: yes, 2009
We show that strong photoluminescence (PL) can be induced in single-layer graphene using an oxygen plasma treatment. The PL is spatially uniform across the flakes and connected to elastic scattering spectra distinctly different from those of gapless ...
Novoselov, K. S.   +21 more
core   +1 more source

Recent Progress in Graphene-Based Electrocatalysts for Hydrogen Evolution Reaction

open access: yesNanomaterials, 2022
Hydrogen is regarded as a key renewable energy source to meet future energy demands. Moreover, graphene and its derivatives have many advantages, including high electronic conductivity, controllable morphology, and eco-friendliness, etc., which show ...
Xupeng Qin   +6 more
doaj   +1 more source

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