Results 91 to 100 of about 111,252 (299)

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Synthesis of Carbon Quantum Dots Based on Quinoa Straw and their Application in Alkali Metal Ions Detection

open access: yesBioResources
Carbon quantum dots (CQDs) with good water solubility and fluorescence properties were successfully synthesized from Chenopodium quinoa Willd. straw, a biomass by-product, by a one-step carbonization method.
Ye Xing, Ya-nan Wang, Haichao Li
doaj   +2 more sources

Kondo physics in carbon nanotubes

open access: yes, 2000
The connection of electrical leads to wire-like molecules is a logical step in the development of molecular electronics, but also allows studies of fundamental physics.
A Bachtold   +28 more
core   +1 more source

Magnetic-Field Dependence of Tunnel Couplings in Carbon Nanotube Quantum Dots [PDF]

open access: yes, 2012
By means of sequential and cotunneling spectroscopy, we study the tunnel couplings between metallic leads and individual levels in a carbon nanotube quantum dot.
Andergassen, S.   +8 more
core   +2 more sources

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Competitive Performance of Carbon “Quantum” Dots in Optical Bioimaging

open access: yesTheranostics, 2012
Carbon-based “quantum” dots or carbon dots are surface-functionalized small carbon nanoparticles. For bright fluorescence emissions, the carbon nanoparticles may be surface-doped with an inorganic salt and then the same organic ...
Li Cao, Sheng-Tao Yang, Xin Wang, Pengju G. Luo, Jia-Hui Liu, Sushant Sahu, Yamin Liu, Ya-Ping Sun
doaj  

Microsecond-lived quantum states in a carbon-based circuit driven by cavity photons

open access: yesNature Communications
Semiconductor quantum dots are an attractive platform for the realisation of quantum processors. To achieve long-range coupling between them, quantum dots have been integrated into microwave cavities.
B. Neukelmance   +18 more
doaj   +1 more source

Electrochemiluminescence of CdTe Quantum Dots and Sensitive Detection of Hemoglobin

open access: yesInternational Journal of Electrochemical Science, 2017
CdTe quantum dots were modified to the surface of glassy carbon electrode (GCE) using Nafion, and the electrochemiluminescence (ECL) behavior of CdTe quantum dots immobilized in Nafion was investigated.
Kui-Yu Yi, Chun-Sheng Wei
doaj   +1 more source

A Simple Hydrothermal Synthesis of Luminescent Carbon Quantum Dots from Different Molecular Precursors [PDF]

open access: yes, 2013
In this work,highly photoluminescent C-dots have been synthesised from different precursors such as sucrose, ascorbic acid, citric acid and their combinations under similar conditions to that of recently reported synthesis of C-dots from orange juice.The
Paikaray, Sonali
core  

Orbital Kondo effect in carbon nanotubes

open access: yes, 2005
Progress in the fabrication of nanometer-scale electronic devices is opening new opportunities to uncover the deepest aspects of the Kondo effect, one of the paradigmatic phenomena in the physics of strongly correlated electrons.
AC Hewson   +32 more
core   +1 more source

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