Results 31 to 40 of about 55,487 (266)

Prospects for the use of nanoparticles (quantum dots) in ophthalmology

open access: yesОфтальмохирургия
Purpose. A systematic analysis of domestic and foreign literature devoted to the potential use of quantum dots (QD) in ophthalmology, as well as the identification of the main problems regarding the implementation of QD in ophthalmic practice.
V.O. Ponomarev, K.A. Tkachenko
doaj   +1 more source

Engineering directed excitonic energy transfer [PDF]

open access: yes, 2010
We provide an intuitive platform for engineering exciton transfer dynamics. We show that careful consideration of the spectral density, which describes the system-bath interaction, leads to opportunities to engineer the transfer of an exciton.
Alan Aspuru-Guzik   +5 more
core   +2 more sources

DDX3X induces mesenchymal transition of endothelial cells by disrupting BMPR2 signaling

open access: yesFEBS Open Bio, EarlyView.
Elevated DDX3X expression led to downregulation of BMPR2, a key regulator of endothelial homeostasis and function. Our co‐immunoprecipitation assays further demonstrated a molecular interaction between DDX3X and BMPR2. Notably, DDX3X promoted lysosomal degradation of BMPR2, thereby impairing its downstream signaling and facilitating endothelial‐to ...
Yu Zhang   +7 more
wiley   +1 more source

Enzyme-Polymers Conjugated to Quantum-Dots for Sensing Applications

open access: yesSensors, 2011
In the present research, the concept of developing a novel system based on polymer-enzyme macromolecules was tested by coupling carboxylic acid functionalized poly(vinyl alcohol) (PVA-COOH) to glucose oxidase (GOx) followed by the bioconjugation with CdS
Alexandra Mansur   +2 more
doaj   +1 more source

Semiconductor Quantum Dots as Target Analytes: Properties, Surface Chemistry and Detection

open access: yesNanomaterials, 2022
Since the discovery of Quantum Dots (QDs) by Alexey I. Ekimov in 1981, the interest of researchers in that particular type of nanomaterials (NMs) with unique optical and electrical properties has been increasing year by year. Thus, since 2009, the number
Jesús Sanmartín-Matalobos   +6 more
doaj   +1 more source

Time-Resolved Intraband Relaxation of Strongly-Confined Electrons and Holes in Colloidal PbSe Nanocrystals

open access: yes, 2004
The relaxation of strongly-confined electrons and holes between 1P and 1S levels in colloidal PbSe nanocrystals has been time-resolved using femtosecond transient absorption spectroscopy.
A. A. Lipovskii   +9 more
core   +1 more source

Colloidal quantum dots enabling coherent light sources for integrated silicon-nitride photonics [PDF]

open access: yes, 2017
Integrated photoniccircuits, increasingly based on silicon (-nitride), are at the core of the next generation of low-cost, energy efficient optical devices ranging from on-chip interconnects to biosensors.
Aubert, Tangi   +6 more
core   +3 more sources

Tunable Coordination Number in Non‐Metal‐Introduced Copper Catalysts Enables High‐Performance Electrochemical CO2 Reduction to C2 Products

open access: yesAdvanced Functional Materials, EarlyView.
Copper catalysts introduced with different non‐metallic elements regulating the coordination number of Cu are prepared by magnetron sputtering. Reducing the Cu coordination number enhances C─C coupling and boosts C2+ product selectivity, by lowering the energy barrier for the *CO → *CHO conversion step. The optimized Si‐doped Cu catalyst achieves a C2+
Xiaoye Du   +8 more
wiley   +1 more source

Multicolor Optoelectronic Synapse Enabled by Photon‐Modulated Remote Doping in Solution‐Processed Van Der Waals Heterostructures

open access: yesAdvanced Functional Materials, EarlyView.
Multicolor optoelectronic synapses are realized by vertically integrating solution‐processed MoS2 thin‐film and SWCNT. The electronically disconnected but interactive MoS2 enables photon‐modulated remote doping, producing a bi‐directional photoresponse.
Jihyun Kim   +8 more
wiley   +1 more source

Facile and versatile ligand analysis method of colloidal quantum dot

open access: yesScientific Reports, 2021
Colloidal quantum-dots (QDs) are highly attractive materials for various optoelectronic applications owing to their easy maneuverability, high functionality, wide applicability, and low cost of mass-production.
Jin Hae Kim   +8 more
doaj   +1 more source

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