Results 241 to 250 of about 35,825 (292)

Synthesis of CdTe colloidal quantum dots (QDs) in water

Frontiers of Chemistry in China, 2008
The comparison of growth processes and fluorescent properties of CdTe semiconductor quantum dots (QDs) that are synthesized in water with different modifiers are discussed in this paper. The samples are characterized through ultraviolet-visible spectra (UV-Vis), photoluminescence spectra (PL) and zeta potential.
Rong He, Xiaogang You, Hongye Tian, Feng Gao, Daxiang Cui   +4 more
openaire   +1 more source

Simulation of quantum dots (QDs) in the confinement regime

International Journal of Applied Science and Engineering Research, 2012
The ground state confinement energy and its associated wavelength as a function of radius for three different semiconductor quantum dots (QDs) were calculated using the Brus equation. The experimental observation of the size dependence on the band gap energy is in good agreement with the theoretical models for the semiconductor nanocrystals considered.
Chukwuocha E.O, Onyeaju M.C
openaire   +1 more source

1300 Nm Quantum Dot Semiconductor Disk Laser (QD-SDL)

2014 International Semiconductor Laser Conference, 2014
We report the first quantum dot semiconductor disk laser operating at 1300 nm under continuous optical pumping at room temperature. A threshold power of 21 mW and output power above 0.5 mW have been achieved.
S.S. Alharthi, E. Clarke, I.D. Henning, M.J. Adams   +3 more
openaire   +1 more source

Heating Effects of Colloidal ZnO Quantum Dots (QDs) on ZnO QD/CdSe QD/MoOx Photodetectors

IEEE Transactions on Nanotechnology, 2017
In this paper, the effects of heat treatment of a colloidal ZnO quantum dot (QD) (diameter ∼1.83–2.43 nm) based electron transport layer (ETL) on the performance of ZnO QD/CdSe QD/MoO x /Ag photodetectors (PDs) have been investigated possibly for the first time.
Hemant Kumar, Yogesh Kumar, Gopal Rawat, Chandan Kumar, Bratindranath Mukherjee, Bhola Nath Pal, Satyabrata Jit   +6 more
openaire   +1 more source

Current Application of Quantum Dots (QD) in Cancer Therapy: A Review

Mini-Reviews in Medicinal Chemistry, 2017
Semiconductor quantum dots proved themselves as efficient fluorescent probes in cancer detection and treatment. Their size, high stability, non-photobleaching and water solubility made them a unique fluorophore in place of conventional organic dyes.Newly emerged theranostic drug delivery system using quantum dots helped us in better understanding of ...
Lavanya Thilak, Babu, Priyankar, Paira
openaire   +2 more sources

Subcellular Distribution of CdSe Quantum Dots (QDs) in Breast Cancer Cells

Journal of Nanoscience and Nanotechnology, 2012
In spite of great advances in conventional cancer diagnosis and treatment, the early recognition and characterization for various cancers remain a technological bottleneck. The combined characteristics of board absorption and narrow emission make quantum dots (QDs) desirable fluorescent labels for cancer imaging and other applications in the biomedical
Lei, Hong, Zhe, Wang, Lin, Yuan, Jianhua, Tan, Lixin, Wang, Guangbo, Qu, Daoqiang, Zhang, Ronghai, Lin, Sijin, Liu   +8 more
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InAs/InP quantum dots (QD): from fundamental understanding to coupled QD 1.55 µm laser applications

physica status solidi c, 2007
AbstractWe report a brief overview of recent research developments on InAs/InP quantum dots (QDs). Eight‐band k·p calculations are performed on single InAs/InP QDs, and the impact of substrate orientation ((311)B or (100)) on electronic and optical properties is studied. The quaternary alloy InGaAsP capping is studied by magneto‐photoluminescence.
Cornet, Charles, Hayne, Manus, Schliwa, Andrei, Doré, François, Even, Jacky, Bimberg, Dieter, Moshchalkov, V.V., Loualiche, Slimane   +7 more
openaire   +1 more source

Single quantum dot (QD) imaging of fluid flow near surfaces

Experiments in Fluids, 2005
We introduce the use of quantum dot (QD) nanoparticles for near-surface velocimetry and provide preliminary data to demonstrate its feasibility. Evanescent wave illumination is used to image the motion of water-soluble (CdSe)ZnS QDs with a core size of 6 nm within a region of order 100 nm of a surface .
Shahram Pouya, Manoochehr Koochesfahani, Preston Snee, Moungi Bawendi, Daniel Nocera   +4 more
openaire   +1 more source

ChemInform Abstract: Optical Molecular Sensing with Semiconductor Quantum Dots (QDs)

ChemInform, 2012
AbstractReview: 183 refs.
Ronit Freeman, Itamar Willner
openaire   +1 more source

Surface Chemistry Studies of Quantum Dots (QDs) Modified with Surfactants

Journal of Cluster Science, 2003
Since luminescent CdSe quantum dots (QDs) have shown great potential in biological labeling, the surface chemistry behavior of QDs at interfaces is of great research interest. In the present study, CdSe QDs with green luminescence were modified with hydrophobic chains of varying lengths [from C6 to C18].
Guodong Sui, Jhony Orbulescu, Xiaojun Ji, Kerim M. Gattás-Asfura, Roger M. Leblanc, Miodrag Micic   +5 more
openaire   +1 more source