Results 21 to 30 of about 71,683 (272)

Dependence of Quantum Dot Toxicity In Vitro on Their Size, Chemical Composition, and Surface Charge

Nanomaterials, 2022
Semiconductor nanocrystals known as quantum dots (QDs) are of great interest for researchers and have potential use in various applications in biomedicine, such as in vitro diagnostics, molecular tracking, in vivo imaging, and drug delivery.
Alyona Sukhanova, Svetlana Bozrova, Evgeniia Gerasimovich, Maria Baryshnikova, Zinaida Sokolova, Pavel Samokhvalov, Chris Guhrenz, Nikolai Gaponik, Alexander Karaulov, Igor Nabiev   +9 more
doaj   +1 more source

Qualified difference sets from unions of cyclotomic classes [PDF]

, 2009
Qualified difference sets (QDS) composed of unions of cyclotomic classes are discussed. An exhaustive computer search for such QDS and modified QDS that also possess the zero residue has been conducted for all powers n=4,6,8 and 10. Two new families were
Broughan, Kevin A., Byard, Kevin
core   +2 more sources

Stable CsPbBr3 Achieved by Porphyrin–Thiol Surface Management and Their Dual‐Stimuli Responsive for Optical Encoding

Advanced Materials Interfaces, 2023
Surface ligand management plays an essential role in improving the stability of perovskite quantum dots (QDs) and endowing them with novel property. Herein, a red fluorescence porphyrin‐thiol (named Por‐SH) is applied to adjust the surface and stimuli ...
Xiaoxia Feng, Xiyue Zhao, Jinli Liu, Pengxiao Xu, Jiacheng Liu   +4 more
doaj   +1 more source

Excitons in InGaAs Quantum Dots without Electron Wetting Layer States [PDF]

, 2018
The Stranski-Krastanov (SK) growth-mode facilitates the self-assembly of quantum dots (QDs) using lattice-mismatched semiconductors, for instance InAs and GaAs.
Denneulin, Thibaud, Kardynał, Beata E., Kovacs, Andras, Ludwig, Arne, Löbl, Matthias C., Ritzmann, Julian, Scholz, Sven, Söllner, Immo, Warburton, Richard J., Wieck, Andreas D.   +9 more
core   +2 more sources

Twin-Field Quantum Digital Signature with Fully Discrete Phase Randomization

Entropy, 2022
Quantum digital signatures (QDS) are able to verify the authenticity and integrity of a message in modern communication. However, the current QDS protocols are restricted by the fundamental rate-loss bound and the secure signature distance cannot be ...
Jiayao Wu, Chen He, Jiahui Xie, Xiaopeng Liu, Minghui Zhang   +4 more
doaj   +1 more source

Quantifying engineered nanomaterial toxicity: comparison of common cytotoxicity and gene expression measurements [PDF]

, 2017
BACKGROUND: When evaluating the toxicity of engineered nanomaterials (ENMS) it is important to use multiple bioassays based on different mechanisms of action.
Atha, Donald H., Dennis, Allison M., Dua, Varsha, Hollingsworth, Jennifer A., Iyer, Rashi, Nagy, Amber, Nelson, Bryant C., Steinbrück, Andrea   +7 more
core   +2 more sources

CdSe/ZnS Quantum Dots Impaired the First Two Generations of Placenta Growth in an Animal Model, Based on the Shh Signaling Pathway

Nanomaterials, 2019
The toxicity, especially the transgenerational toxicity of quantum dots (QDs) in vivo, is still scarcely understood in spite of great promising applications of QDs in biomedicine.
Wuding Hong, Huijuan Kuang, Xingping He, Lin Yang, Pengfei Yang, Bolu Chen, Zoraida P. Aguilar, Hengyi Xu   +7 more
doaj   +1 more source

Near-infrared quantum dots labelled with a tumor selective tetrabranched peptide for in vivo imaging

Journal of Nanobiotechnology, 2018
Background Near-infrared quantum dots (NIR QDs) are a new class of fluorescent labels with excellent bioimaging features, such as high fluorescence intensity, good fluorescence stability, sufficient electron density, and strong tissue-penetrating ability.
Jlenia Brunetti, Giulia Riolo, Mariangela Gentile, Andrea Bernini, Eugenio Paccagnini, Chiara Falciani, Luisa Lozzi, Silvia Scali, Lorenzo Depau, Alessandro Pini, Pietro Lupetti, Luisa Bracci   +11 more
doaj   +1 more source

Green light emitting hydrophilic CdTe quantum dots with magic size signature

Next Materials
Synthesis of highly stable green light emitting CdTe quantum dots in aq. medium is discussed. The absorption spectroscopy revealed formation of dots of the size about 4 nm.
Priyanka Phalswal, Akshay P. Raj M, Vaibhav Singh, Devesh Khanna, Pawan K. Khanna   +4 more
doaj   +1 more source

Enhanced glutathione content allows the in vivo synthesis of fluorescent CdTe nanoparticles by Escherichia coli. [PDF]

PLoS ONE, 2012
The vast application of fluorescent semiconductor nanoparticles (NPs) or quantum dots (QDs) has prompted the development of new, cheap and safer methods that allow generating QDs with improved biocompatibility.
Juan P Monrás, Víctor Díaz, Denisse Bravo, Rebecca A Montes, Thomas G Chasteen, Igor O Osorio-Román, Claudio C Vásquez, José M Pérez-Donoso   +7 more
doaj   +1 more source