Results 11 to 20 of about 3,053,858 (295)

Spin phenomena in semiconductor quantum dots [PDF]

open access: yes, 2013
This thesis discusses development of new semiconductor quantum dot (QD) devices and materials. Optical spectroscopy of single QDs is employed in order to investigate electronic structure and magnetic properties of these materials.
Puebla Nunez, Jorge Luis
core   +6 more sources

Primary Amine Functionalized Carbon Dots for Dead and Alive Bacterial Imaging

open access: yesNanomaterials, 2023
Small molecular dyes are commonly used for bacterial imaging, but they still meet a bottleneck of biological toxicity and fluorescence photobleaching. Carbon dots have shown high potential for bio-imaging due to their low cost and negligible toxicity and
Yuting Liu   +4 more
doaj   +1 more source

Electrochemical Synthesis of Carbon Quantum Dots

open access: yesChemElectroChem, 2023
AbstractCarbon quantum dots (CDs) are “small” carbon nanostructures with excellent photoluminescence properties, together with low‐toxicity, high biocompatibility, excellent dispersibility in water as well as organic solvents. Due to their characteristics, CDs have been studied for a plethora of applications as biosensors, luminescent probes for ...
Daniele Rocco   +4 more
openaire   +2 more sources

Carbon quantum dots

open access: yes, 2021
Carbon Quantum dots are a class of materials studied under Nanotechnology. We know that nanotechnology is a wide research topic as it has wide range of applications in various fields. This review is about carbon quantum dots which is the carbon material in the range 1-10 nm. Carbon Quantum dots with unique optical properties, low toxicity, low cost and
Thiago Leandro Oliveira   +1 more
openaire   +3 more sources

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

Synergy between “Probiotic” Carbon Quantum Dots and Ciprofloxacin in Eradicating Infectious Biofilms and Their Biosafety in Mice

open access: yesPharmaceutics, 2021
Orally administrated probiotic bacteria can aid antibiotic treatment of intestinal infections, but their arrival at their intestinal target site is hampered by killing in the gastrointestinal tract and by antibiotics solely intended for pathogen killing.
Yanyan Wu   +5 more
doaj   +1 more source

Carbon quantum dots as a tracer of water seepage sources and pathways in grottoes

open access: yesHeritage Science, 2023
Water seepage is one of the main factors leading to the damage of grottoes. The sources and pathways of water seepage need to be identified to relieve it.
Bo Sun   +4 more
doaj   +1 more source

Multiwall Carbon Nanotubes as Quantum Dots [PDF]

open access: yesPhysical Review Letters, 2002
We have measured the differential conductance dI/dV of individual multi-wall carbon nanotubes (MWNT) of different lengths. A cross-over from wire-like (long tubes) to dot-like (short tubes) behavior is observed. dI/dV is dominated by random conductance fluctuations (UCF) in long MWNT devices (L=2...7 $μm$), while Coulomb blockade and energy level ...
Buitelaar, MR   +4 more
openaire   +5 more sources

Recent advances of biomass carbon dots on syntheses, characterization, luminescence mechanism, and sensing applications

open access: yesNano Select, 2021
Carbon dots have attracted much attention due to their high fluorescence intensity, easy modification, good stability, and biocompatibility. However, the realization of low‐cost mass production of high‐quality carbon dots still faces great challenges ...
Ying Lou   +8 more
doaj   +1 more source

Modern advances in obtaining of carbon quantum dots, characterizing their properties and biomedical application: a review

open access: yesВестник. Серия физическая, 2021
Carbon quantum dots have attracted great interest in recent years due to their unique physical and chemical properties. The certain property that distinguishes carbon quantum dots from other priority nanomaterials is their visible photoluminescence at ...
N. Zhylkybayeva   +5 more
doaj   +1 more source

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