Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
While upconverting lanthanide nanoparticles have numerous advantages over other exogenous contrast agents used in scanned multiphoton imaging, their long luminescence lifetimes cause images collected with non-descanned detection to be greatly blurred. We demonstrate herein the use of Richardson-Lucy deconvolution to d…
Upconversion in rare-earth ions is a sequential multiphoton process that efficiently converts two or more low-energy photons, which are generally near infrared (NIR) light, to produce anti-Stokes emission of a higher energy photon (e.g., NIR, visible, ultraviolet) using continuous-wave (cw) diode laser excitation. Her…
Los objetivos principales de este trabajo se han centrado en la obtencion de nanoparticulas superparamagneticas (oxido de hierro y nanoaleaciones con alta magnetizacion) y su detallada caracterizacion estructural, fisica y magnetica. Tambien se estudio la escalabilidad del metodo de sintesis propuesto, a fin de defini…
The mechanical properties of protective coatings produced by corrosion on the internal surfaces of pipelines transporting hydrocarbons have been investigated by indentation tests, which have revealed the spall or cracking attitude of the film.The role of material properties controlling the coating integrity and the ma…
The search for a smooth start-up method preventing the excessive increase of neutron flux and power production in the prospective fast reactor at the stage of establishing the self-sustained nuclear burning wave (NBW) regime is carried out. The problem is studied by means of numerical simulation of the initiation and…
In the present paper, we estimated backscattering factors for the TLD and active personal dosimeters using 662 keV gamma-ray photons on a PMMA surface, which are, for the TLD, 1.12; Dosicard, 1.116; DRD, 0.99; and Saphydose, 1.073, and on a water slab phantom surface; for the TLD, 1.115; Dosicard, 1.112; DRD, 1; and S…
Cellulose and chitin are the most abundant polysaccharides in nature. Chitin is the natural amino polysaccharide and is estimated to be produced annually almost as much as cellulose. These resources are renewable and inexhaustible if rationally utilised. Unique properties of chitin and chitosan (chitin derivative obta…
Polymeric vesicles (Pluronic® L-121) loaded with magnetic nanoparticles (MNP) and an anti-cancer drug (camptothecin) were prepared continuously in a micro mixing device. Characterization by TEM confirmed the successful incorporation of the MNP and DLS measurements showed a relatively narrow size distribution of the hy…
Single-molecule fluorescence is a powerful tool for imaging structures below the standard diffraction limit of light. The resolution gain comes from fitting the emission of isolated fluorophores, and localization accuracy improves with number of photons detected. Here, we control single-molecule emission by coupling f…
Magnetic and superparamagnetic colloids represent a versatile platform for the design of functional nanostructures which may act as effective tools for biomedicine, being active in cancer therapy, tissue imaging and magnetic separation. The structural, morphological and hence magnetic features of the magnetic nanopart…
A new type of coupled wave theory is described which is capable, in a very natural way, of analytically describing polychromatic gratings. In contrast to the well known and extremely successful coupled wave theory of Kogelnik, the new theory is based on a differential formulation of the process of Fresnel reflection w…
Al 3 M (M =Ti, Zr, Hf
Graphene nanomesh, with high density arrays of holes to mimic interconnected nanoribbon networks, opens up enormous potential for applications in electronics.It has been shown in the literature that the graphene nanomesh is able to sustain two orders of magnitude larger amount of current than the individual graphene n…
Au nanostructures that exhibit strong localized surface plasmon resonance (SPR) have excellent potential for photo-medicine, among a host of other applications. Here, we report the synthesis and use of colloidal gold nanorings (GNRs) with potential for enhanced photodynamic therapy of cancer. The GNRs were fabricated…
The adsorption of Zn (II) on lignite and coconut shell–based activated carbon fiber (ACF) was studied using a batch process to determine the governing mechanism of Zn (II) removal and the most suitable kinetic model. Zn (II) adsorption was found to be enhanced at higher solution temperatures, and the optimal contact t…
In the title compound, [Ag(C12H8N2S)2]BF4, the two-coordinate Ag(I) ion lies on a crystallographic inversion center and is linearly bonded to the N-donor atoms of two separate quinoxaline ligands. The thio-phenyl ring of the ligand is nearly coplanar with the quinoxaline ring system [dihedral angle = 9.15 (13)°]. In t…
The influence of macromolecular architectures on temperature-responsive properties of poly((N,N-dimethylamino)ethyl methacrylate) (PDMAEMA) was investigated to control the lower critical solution temperature (LCST) for promoting its potential application in the biomedical field. Temperature-responsive property of PDMA…
Laser shock peening is a well-known technology able to enhance the fatigue life of mechanical components by means of the introduction of residual stresses on their surface. These stresses are induced by means of the recoil pressure caused by the abrupt expansion, in a confining medium, of a laser-vaporized coating lay…
Abstract A novel approach to the synthesis of highly monodisperse quantum dot‐loaded polymer beads by combining impregnation and precipitation techniques was reported. The monodisperse poly(glycidyl methacrylate) (PGMA) beads were first synthesized by dispersion polymerization. Then, the PGMA beads were chemically mod…
We discuss a hyperspectral darkfield microscopy technique capable of imaging single nanoparticles at biologically compatible (<0.5 W/cm2) illumination conditions. The microscope was tested on an array of lithographically produced gold nanorod antennas and on colloidal gold nanorods deposited on a glass substrate. As a…