Background: Pancreatic islet transplantation is one of the most promising strategies for treating patients with type I diabetes mellitus.Objective: We aimed to assess the immunoisolation properties of the multilayer encapsulated islets using alginate-chitosan-PEG for immunoprotection and insulin secretion from the encapsulated islets induced under differe...

The anomalous Berthelot-type optical properties of quaternary AlInGaN heterostructure with different quantum well pairs have been systematically investigated in this study. The Berthelot-type model refers to the temperature dependence of emission intensity with blue then red shift behavior in disorder material system. The photoluminescence of the AlInGaN heterostructures is also found to exhibi...

Tungsten sulfide decorated with indium oxide nanoparticles (In2O3/WS2) was studied for a chemiresistive-type NH3 sensor at room temperature. It found that the responses of developed In2O3/WS2 heterostructure nanocomposite-based sensors are significantly improved to 3.81 from 1.45 WS2. The response and recovery time heterostructure-based decrease 88 s/116 s (10 ppm) 112 s/192 WS2-based one. also...

One of the strategies to overcome drawbacks fast charge recombination a photocatalyst is develop semiconductor heterostructures. Herein, we report two-step precipitation-hydrothermal process create CuFeO2-ZnO heterostructures with different weight percentages CuFeO2 (0.5, 1, 5, and 10%). Though X-ray diffraction detected presence on ZnO above 5%, Raman spectroscopy could reveal phase as low 0.5...

We have evaluated the tunneling contact resistivity based on numerical calculation of tunneling current density across an AlGaN barrier layer in non-polar AlGaN/GaN heterostructures. In order to reduce the tunneling contact resistivity, we have introduced an n-AlXGa1−XN layer between an n-GaN cap layer and an i-AlGaN barrier layer. The tunneling contact resistivity has been optimized by varying...

Shot noise: Fluctuations of the current flowing through a device that result from the discreteness of the charge carrier. Shot noise provides information on the charge carriers and the transport mechanism in the device. The shot noise measurements in semiconductor heterostructure devices shed light on how the devices operate, beyond information provided by the electrical conductance. The shot n...

Background: Neurofibromatosis 1 (NF1) is a relatively common autosomal dominant condition. Among the complications of the disease, such as neurological disorders, hypertension and skeletal deformities, malignancy is the most serious one and is the main cause of early death in these patients. Objective: Review of cases of NF-1 associated with malignancies. Patents and Methods: In a retrospective...

The features of the electroluminescence spectra narrow-gap type II InAs/InSb/InAs heterostructures containing a single layer InSb quantum dots placed into p-n-InAs junction were studied. luminescent properties under forward and reverse bias in temperature range 77–300 K investigated as function surface density nano-objects buried matrix. When applying to study, suppression negative interband lu...