Results 141 to 150 of about 3,970 (183)

Toxicity of CdTe Quantum Dots in Bacterial Strains

IEEE Transactions on NanoBioscience, 2009
Contradictory results on quantum dot cytotoxicity exist for many types of biological systems, especially microorganisms. In this study, we compare the cytotoxicity of CdTe quantum dots (QDs) to four very different environmental bacterial strains, giving quantitative models of the growth curves for exposed organisms.
Eve-Marei, Dumas, Valéry, Ozenne, Randall E, Mielke, Jay L, Nadeau   +3 more
openaire   +2 more sources

Electrochemical properties of CdSe and CdTe quantum dots

Chemical Society Reviews, 2012
Semiconductor nanocrystal quantum dots (QDs), owing to their unique opto-electronic properties determined by quantum confinement effects, have been the subject of extensive investigations in different areas of science and technology in the past two decades. The electrochemical behaviour of QDs, particularly for CdSe and CdTe nanocrystals, has also been
AMELIA, MATTEO, LINCHENEAU, CHRISTOPHE, SILVI, SERENA, CREDI, ALBERTO   +3 more
openaire   +3 more sources

Luminescence and growth of CdTe quantum dots and clusters

Physical Chemistry Chemical Physics, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Wuister, S.F., van Driel, A.F., Meijerink, A.   +2 more
openaire   +2 more sources

Mechanism of Antimicrobial Activity of CdTe Quantum Dots

Langmuir, 2008
The antimicrobial activity and mechanism of CdTe quantum dots (QDs) against Escherichia coli were investigated in this report. Colony-forming capability assay and atomic force microscopy (AFM) images show that the QDs can effectively kill the bacteria in a concentration-dependent manner.
Zhisong, Lu, Chang Ming, Li, Haifeng, Bao, Yan, Qiao, Yinghui, Toh, Xu, Yang   +5 more
openaire   +2 more sources

Reborn water-soluble CdTe quantum dots

Talanta, 2014
Recovery of fully aggregated water-soluble CdTe quantum dots was achieved by simple treatment with a strong base. A deprotonation-triggered disaggregation is postulated to be the main mechanism involved in the quantum dots "reborn" process.
Anita, Lourenço, Teresa, Casimiro, Vasco D B, Bonifácio   +2 more
openaire   +2 more sources

Manifestation of CdTe quantum dots and interdiffusion in IR reflection spectra of CdTe/ZnTe structures with quantum dots

Physics of the Solid State, 2007
The IR reflection spectra of structures that consist of alternating layers of CdTe quantum dots and ZnTe barriers and are grown on ZnTe and CdTe/ZnTe buffer layers on GaAs(001) substrates are studied. The spectra are processed using dispersion analysis, and the parameters of the oscillators are determined.
I. V. Kucherenko, V. S. Vinogradov, G. Karczewski, N. N. Novikova, M. Cestelli Guidi, M. Piccinini   +5 more
openaire   +1 more source

Doped CdTe-based quantum dots

Bulletin of the Russian Academy of Sciences: Physics, 2015
Colloidal semiconductor CdTe-based quantum dots are investigated. An ab initio computer design of quantum dots based on nanoparticles of CdTe and CdTe doped with atoms of transition elements (Co, Mn) is executed. Partial densities of the electron states of the investigated quantum dots are calculated.
A. N. Kravtsova, K. A. Lomachenko, S. A. Suchkova, I. A. Pankin, M. B. Fayn, A. L. Bugaev, A. V. Soldatov   +6 more
openaire   +1 more source

Optoelectronic characteristics of CdTe/HgTe/CdTe quantum-dot quantum-well nanoparticles

Solid State Communications, 2006
Optoelectronic characteristics of CdTe/HgTe/CdTe quantum-dot quantum-well (QDQW) nanoparticles synthesized by the colloidal method are investigated in this study. Strong exciton bands were observed in absorption and photoluminescence (PL) spectra taken for the CdTe/HgTe/CdTe QDQW nanoparticles.
Dong-Won Kim, Kyoungah Cho, Hyunsuk Kim, Byoungjun Park, Man Young Sung, Sangsig Kim   +5 more
openaire   +1 more source

Extracellular microbial synthesis of biocompatible CdTe quantum dots

Acta Biomaterialia, 2010
An efficient bacterial synthesis method to harvest cadmium telluride (CdTe) quantum dots (QDs) with tunable fluorescence emission using Escherichia coli is demonstrated. Ultraviolet-visible, photoluminescence, X-ray diffraction and transmission electron microscopy analysis confirmed the superior size-tunable optical properties, with fluorescence ...
Haifeng, Bao, Zhisong, Lu, Xiaoqiang, Cui, Yan, Qiao, Jun, Guo, James M, Anderson, Chang Ming, Li   +6 more
openaire   +2 more sources

Detection of UV Rays Using CdTe Quantum Dots

International Journal of Measurement Technologies and Instrumentation Engineering, 2015
Development of simple UV detection system using CdTe quantum dots (QDs) as primary detector with scintillating property on exposure to UV rays is reported. CdTe, CdTe/ZnS and CdTe/CdS QDs were synthesized in aqueous phase using mercaptosuccinic acid (MSA) as a capping agent and studied for its properties like crystallite size, band gap energy ...
A. Anbarasi, R. Kalpana 0003, A. Arivarasan, R. Jayavel, B. Venkataraman   +4 more
openaire   +1 more source