Results 61 to 70 of about 53,002 (228)

Determination of Thermal History by Photoluminescence of Core-shelled Quantum Dots Going Through Heating Events

, 2014
A kind of novel thermal history nanosensors were theoretically designed and experimentally demonstrated to permanently record thermal events. The photoluminescence spectrum of core-shelled quantum dots CdSe/ZnS irreversibly shifted with heating histories
Chen, G., Chen, X., Lan, Y., Lu, Y., Ren, Z., Skula, N., Wang, H.   +6 more
core   +1 more source

Nanozymes at the Bio‐Nano Interface: From Synthesis, Defect Engineering, Catalytic Behavior in Biological Microenvironments, and Biosafety Implications

Advanced Materials Interfaces, EarlyView.
Nanozymes (NZs) have emerged as versatile artificial enzymes with tunable catalytic properties driven by atomic coordination, defect engineering, and surface chemistry. This review presents a bio–nano interface framework linking synthesis strategies, structural design, and catalytic behavior within complex biological microenvironments.
Karen Guadalupe Quintero‐Garrido, Aída Jimena Velarde‐Salcedo, Alejandro López‐Amador, Noé Arjona, Citlali Uitz Toalá, Carmen Gonzalez, Beatriz Liliana España‐Sánchez   +6 more
wiley   +1 more source

A Large Blue Shift of the Biexciton State in Tellurium Doped CdSe Colloidal Quantum Dots

, 2008
The exciton-exciton interaction energy of Tellurium doped CdSe colloidal quantum dots is experimentally investigated. The dots exhibit a strong Coulomb repulsion between the two excitons, which results in a huge measured biexciton blue shift of up to 300
Franzl T., Fujisawa J.-I., Klimov V. I., Klimov V. I., Nag A., Norris D. J., Norris D. J., Oron D., Oron D., Piryatinski A., Pradhan N., Pradhan N., Sungjee K., Woggon U., Zeng Q.   +14 more
core   +2 more sources

Nanocrystalline semiconductors: synthesis, properties, and perspectives [PDF]

, 2001
The preparation of hollow particles of ZnO by calcination of hydrozincite coated poly(styrene) beads is reported. Synthetic studies have been performed on such polymer/inorganic composite precursors in order to establish the optimum conditions for the ...
O'Brien, P, Pickett, NL, Trindade, T
core   +2 more sources

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Synthesis of Novel Stable ZnSe Magic‐Sized Clusters and Their Direct Transformation to Quantum Dots

Advanced Science, EarlyView.
We have developed a low‐temperature synthetic approach that enables the fabrication of novel ZnSe MSCs with remarkable thermal stability. These stabilized MSCs serve as efficient precursors that can be readily converted to ZnSe QDs under mild conditions through simple introduction of a selenium source.
Bin Song, Zihui Jin, Xuanyu Zhang, Rong‐Jun Xie   +3 more
wiley   +1 more source

p-State Luminescence in CdSe Nanoplatelets: The Role of Lateral Confinement and an LO Phonon Bottleneck

, 2015
We report excited state emission from p-states at excitation fluences well below ground state saturation in CdSe nanoplatelets. Size dependent exciton ground state-excited state energies and dynamics are determined by three independent methods, time ...
Achtstein, Alexander W, Antanovich, Artsiom, Artemyev, Mikhail, Bertrand, Guillaume HV, Christodoulou, Sotirios, Jagsch, Stefan T, Kickhöfel, Sebastian, Moreels, Iwan, Prudnikau, Anatol V, Schliwa, Andrei, Scott, Riccardo, Woggon, Ulrike   +11 more
core   +1 more source

Transferable Pair Potentials for CdS and ZnS Crystals [PDF]

, 2012
A set of interatomic pair potentials is developed for CdS and ZnS crystals. We show that a simple energy function, which has been used to describe the properties of CdSe [J. Chem. Phys.
Alexey Zayak, Allen M. P., Eran Rabani, Hellwege K.-H., Hellwege K.-H., Jeffrey B. Neaton, Michael Grünwald, Phillip L. Geissler, Wyckoff R. W. G.   +8 more
core   +1 more source

SYNTHESIS AND CHARACTERIZATION OF CdSe COLLOIDAL QUANTUM DOTS IN ORGANIC SOLVENT [PDF]

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2014
In this paper we present experimental results on preparation and characterization of colloidal CdSe quantum dots in organic solvent. CdSe QDs were synthesized following a modified literature method.
Ion Geru, Olga Bordian, Constantin Loshmansky, Ion Culeac, Constantin Turta   +4 more
doaj  

Effects of growth time on the material properties of CdTe/CdSe core/shell nanoparticles prepared by a facile wet chemical route

Materials Research Express, 2022
This study presents a facile synthetic approach used to prepare CdTe/CdSe core/shell nanoparticles (NPs). The effects of reaction time on the material properties of the CdTe/CdSe NPs are reported.
Sharon Kiprotich, F B Dejene, Martin O Onani   +2 more
doaj   +1 more source