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We have studied the dependence of concentration quenching of luminescence (donor–acceptor energy transfer) on the thickness d of dye-doped polymeric films (HITC:PMMA) and found its strong inhibition at small values of ...

Waste shredder blades operate under abrasive contact and intermittent impacts from heterogeneous materials, making surface hardness a key property for maintaining cutting performance and reducing premature dulling. This ...

Advanced analytical techniques such as Inductively Coupled Plasma Mass Spectrometry (ICP-MS) are powerful tools for chemical analysis; however, they present several practical challenges, including high operating costs, t...

The MLCT luminescence quenching of pyRe(CO)3bpy+ and/or the polymer {[(vpy)2-vpyRe(CO)3bpy] CF3SO3}n–200 by amines proceeds via an electron transfer reaction which produces amine radical cations and pyReI (CO)3(bpy)•...

The concept of topology is universally observed in various physical objects when the objects can be described by geometric structures. Although a representative example is the knotted geometry of wavefunctions in recipro...

Objective: The objective of this study was to synthesise a novel silver nanocomposite incorporating quorum-quenching enzyme N-acyl-homoserine lactone-lactonase Est816 (Ag-Est816) to inhibit periodontal biofilm formation....

Plasmonic nanoparticles provide an ideal environment for the enhancement of fluorescent emission. On the one hand, they locally amplify the electromagnetic fields, increasing the emitter excitation rate, and on the other...

Nanocomposites based on few-layers graphene oxide (FGO) decorated with porphyrin nanorods (PN) were synthesized and the interfacial interaction between these two components was investigated by using scanning electron mic...

Collisional quenching of NO A 2 S+ (v = 0) by N2O and CO2 has been studied through measurements of vibrationally excited products by time resolved Fourier transform infrared emission. In both cases vibrationally excited ...

Temperature-dependent (5 K–300 K) Raman scattering study of A1g/A′1 phonon modes in mono-layer (1L), bilayer (2L), trilayer (3L), and tetralayer (4L) MoTe2 is reported. The temperature evolution of the modes’ inten...

While silicon single-photon avalanche diodes (SPAD) have reached very high detection efficiency and timing resolution, their use in fibre-optic communications, optical free space communications, and infrared se...

Materie / parole chiave: Quantum yield; Electron transport chain; Quenching (fluorescence); Fluorescence; Chlorophyll fluorescence; Photochemistry; Photosynthesis; Photosystem II; Chemistry; Yield (engineering); Excitation; Electron

A simple methodology was developed to quantify penicillamine (PA) in pharmaceutical samples, using the selective interaction of the drug with Cu-modified graphene quantum dots (Cu-GQDs). The proposed strategy combines th...

A new approach for introducing porosity in fluorescent polymer films to increase sensing performance is presented. A novel segmented conjugated polymer composed of p-quaterphenylene segments tethered by their meta positi...

Abstract The current research of the Q-P and Q-P-T process has been focused on controlling the heating temperature and holding time, or adding alloy elements into the steel to induce precipitation strengthening and impro...

We have grown arrays of silver nanowires in pores of anodic alumina membranes (metamaterials with hyperbolic dispersion at λ ≥ 615 nm), spin coated them with the dye-doped polymer (HITC:PMMA), and studied the rates...

The influence of Au nanorods coated with a silica layer on the photoluminescence (PL) of CdTe quantum dots (QDs) was investigated. The Au nanorods were prepared using a seed-mediated method. They were coated with a silic...

Abstract The considerable heat treatment induced runout value in the end face of the automobile main reducer gear is always dimensionally out of tolerance. It directly affects the dimensional accuracy, the grade of carbu...

This study comparatively examined spectroscopic features, photosynthetic parameters and energy partitioning in plants of Fittonia albivenis cv. Agyroneura and Fittonia albivenis cv. Verschaffeltii with different pigmenta...

This study presents a novel and high-level anticounterfeiting strategy based on Ce/Yb/Ho triply-doped NaGdF4 nanocrystals with temperature-responsive multicolor emission. A critical factor leading to the multicolor emiss...

Glasses with compositions (100-x) % Na2B4O7–x % MO (X=10,20,30,40) where (M) is Ba, Mg and Ca, are prepared using conventional melt quenching method. X-rays diffractions are performed. The result of (XRD) confirm the a...

We study the angular fluorescence intensity modulation of a single dye positioned near a spherical gold nanoparticle, induced by rotation of linearly polarized excitation light. Accurate positioning and alignment of nano...