Sign reversal of dielectric anisotropy of ferroelectric liquid crystals doped with cadmium telluride quantum dots

2011 ◽  
Vol 99 (7) ◽  
pp. 072902 ◽  
Author(s):  
A. Kumar ◽  
P. Silotia ◽  
A. M. Biradar
Keyword(s):  
Quantum Dots ◽  
Liquid Crystals ◽  
Cadmium Telluride ◽  
Dielectric Anisotropy ◽  
Sign Reversal ◽  
Ferroelectric Liquid Crystals ◽  
Cadmium Telluride Quantum Dots

scholarly journals Memory effect in cadmium telluride quantum dots doped ferroelectric liquid crystals

2010 ◽  
Vol 97 (16) ◽  
pp. 163113 ◽  
Author(s):  
A. Kumar ◽  
J. Prakash ◽  
Mohd Taukeer Khan ◽  
S. K. Dhawan ◽  
A. M. Biradar
Keyword(s):  
Quantum Dots ◽  
Liquid Crystals ◽  
Cadmium Telluride ◽  
Memory Effect ◽  
Ferroelectric Liquid Crystals ◽  
Cadmium Telluride Quantum Dots

Luminescent CdTe quantum dots incarcerated in a columnar matrix of discotic liquid crystals for optoelectronic applications

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1262-1267 ◽  
Author(s):  
Manish Kumar ◽  
Sandeep Kumar
Keyword(s):  
Quantum Dots ◽  
Thermal Properties ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Cadmium Telluride ◽  
Cdte Quantum Dots ◽  
Discotic Liquid Crystals ◽  
Discotic Liquid Crystal ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

The effects of highly luminescent alkylamine-capped semiconductor cadmium telluride quantum dots (CdTe QDs) dispersion on the optical, electrical, thermal properties and supramolecular order of a discotic liquid crystal were studied.

scholarly journals Gene Expression and Transcriptome Profiling of Changes in a Cancer Cell Line Post-Exposure to Cadmium Telluride Quantum Dots: Possible Implications in Oncogenesis

Dose-Response ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 155932582110198
Author(s):  
Mohammed S. Aldughaim ◽  
Mashael R. Al-Anazi ◽  
Marie Fe F. Bohol ◽  
Dilek Colak ◽  
Hani Alothaid ◽  
...  
Keyword(s):  
Gene Expression ◽  
Quantum Dots ◽  
Cancer Cells ◽  
Cadmium Telluride ◽  
Cancer Progression ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Dependent Manner ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

Cadmium telluride quantum dots (CdTe-QDs) are acquiring great interest in terms of their applications in biomedical sciences. Despite earlier sporadic studies on possible oncogenic roles and anticancer properties of CdTe-QDs, there is limited information regarding the oncogenic potential of CdTe-QDs in cancer progression. Here, we investigated the oncogenic effects of CdTe-QDs on the gene expression profiles of Chang cancer cells. Chang cancer cells were treated with 2 different doses of CdTe-QDs (10 and 25 μg/ml) at different time intervals (6, 12, and 24 h). Functional annotations helped identify the gene expression profile in terms of its biological process, canonical pathways, and gene interaction networks activated. It was found that the gene expression profiles varied in a time and dose-dependent manner. Validation of transcriptional changes of several genes through quantitative PCR showed that several genes upregulated by CdTe-QD exposure were somewhat linked with oncogenesis. CdTe-QD-triggered functional pathways that appear to associate with gene expression, cell proliferation, migration, adhesion, cell-cycle progression, signal transduction, and metabolism. Overall, CdTe-QD exposure led to changes in the gene expression profiles of the Chang cancer cells, highlighting that this nanoparticle can further drive oncogenesis and cancer progression, a finding that indicates the merit of immediate in vivo investigation.

Hepatotoxicity of Cadmium Telluride Quantum Dots Induced by Mitochondrial Dysfunction

2020 ◽  
Vol 33 (9) ◽  
pp. 2286-2297
Author(s):  
Kathy C. Nguyen ◽  
Yan Zhang ◽  
Julie Todd ◽  
Kevin Kittle ◽  
Michelle Lalande ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Mitochondrial Dysfunction ◽  
Cadmium Telluride ◽  
Cadmium Telluride Quantum Dots

Novel aspects of application of cadmium telluride quantum dots nanostructures in radiation oncology

2017 ◽  
Vol 123 (8) ◽  
Author(s):  
Yousef Fazaeli ◽  
Hakimeh Zare ◽  
Shokufeh Karimi ◽  
Reza Rahighi ◽  
Shahzad Feizi
Keyword(s):  
Quantum Dots ◽  
Cadmium Telluride ◽  
Radiation Oncology ◽  
Cadmium Telluride Quantum Dots

scholarly journals Photoluminescence of CdSe/ZnS quantum dots in nematic liquid crystals in electric fields

2018 ◽  
Vol 9 ◽  
pp. 1544-1549 ◽  
Author(s):  
Margarita A Kurochkina ◽  
Elena A Konshina ◽  
Daria Khmelevskaia
Keyword(s):  
Quantum Dots ◽  
Liquid Crystals ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Electric Fields ◽  
Dielectric Anisotropy ◽  
Vertical Position ◽  
Decay Times ◽  
Pl Intensity

We have experimentally investigated the effect of the reorientation of a nematic liquid crystal (LC) in an electric field on the photoluminescence (PL) of CdSe/ZnS semiconductor quantum dots (QDs). To the LC with positive dielectric anisotropy, 1 wt % QDs with a core diameter of 5 nm was added. We compared the change of PL intensity and decay times of QDs in LC cells with initially planar or vertically orientated molecules, i.e., in active or passive LC matrices. The PL intensity of the QDs increases four-fold in the active LC matrix and only 1.6-fold in the passive LC matrix without reorientation of the LC molecules. With increasing electric field strength, the quenching of QDs luminescence occurred in the active LC matrix, while the PL intensity did not change in the passive LC matrix. The change in the decay time with increasing electric field strength was similar to the behavior of the PL intensity. The observed buildup in the QDs luminescence can be associated with the transfer of energy from LC molecules to QDs. In a confocal microscope, we observed the increase of particle size and the redistribution of particles in the active LC matrix with the change of the electric field strength. At the same time, no significant changes occurred in the passive LC matrix. With the reorientation of LC molecules from the planar in vertical position in the LC active matrix, quenching of QD luminescence and an increase of the ion current took place simultaneously. The obtained results are interesting for controlling the PL intensity of semiconductor QDs in liquid crystals by the application of electric fields.

scholarly journals Determination of ethanol in biodiesel samples using mercaptopropionic acid-capped cadmium telluride quantum dots as photoluminescence probes

Fuel ◽  
2019 ◽  
Vol 238 ◽  
pp. 425-429
Author(s):  
Elane M. Silva ◽  
Taiana B. Tarantino ◽  
Jorge S. Almeida ◽  
Josanaide S.R. Teixeira ◽  
Rodolfo M.M. Santana ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cadmium Telluride ◽  
Mercaptopropionic Acid ◽  
Cadmium Telluride Quantum Dots
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