نتایج جستجو برای: exfoliated
تعداد نتایج: 2683 فیلتر نتایج به سال:
Exfoliated cells that appear to be circulating endothelial cells were detected in human blood. Because the size of endothelial cells is larger than that of other circulating blood cells, we investigated whether the increased number of circulating endothelial cells might be responsible for cerebral embolism. We compared rabbits into which suspensions of endothelial cells were injected through th...
Exfoliation of graphite nanofibers (GNF) expands the interplanar spacing of the GNF which leads to increased hydrogen storage. The exfoliation technique plays a large role in the resulting GNF microstructure, surface area, and hydrogen storage properties. Variations in preparation conditions expand the GNF lattice from 3.4 Å to over 500 Å. The BET surface area of the exfoliated GNF increases as...
The electrochemical detection of NADH is of considerable interest because it is required as a cofactor in a large number of dehydrogenase-based biosensors. However, the presence of oxygenated functionalities on the electrode often causes fouling due to the adsorption of the oxidised form, NAD(+). Here we report an electroanalytical NADH sensor based on DMF-exfoliated graphene. The latter is sho...
MoS2 is a two-dimensional material that is gaining prominence due to its unique electronic and chemical properties. Here, we demonstrate ligand conjugation of chemically exfoliated MoS2 using thiol chemistry. With this method, we modulate the ζ-potential and colloidal stability of MoS2 sheets through ligand designs, thus enabling its usage as a selective artificial protein receptor for β-galact...
Graphene research has prospered impressively in the past few years, and promising applications such as high-frequency transistors, magnetic field sensors, and flexible optoelectronics are just waiting for a scalable and cost-efficient fabrication technology to produce high-mobility graphene. Although significant progress has been made in chemical vapor deposition (CVD) and epitaxial growth of g...
The ease of collection of preparations of exfoliated cells from the female genital tract has facilitated the recent widespread interest in cytodiagnostic tests for cancer, particularly of the cervix uteri. If cervical cells are readily available for cytological preparations they are also accessible to biochemical study. Such a biochemical study of exfoliated malignant and premalignant cells hol...
Flexible energy storage devices are highly demanded for various applications. Carbon cloth (CC) woven by carbon fibers (CFs) is typically used as electrode or current collector for flexible devices. The low surface area of CC and the presence of big gaps (ca. micro-size) between individual CFs lead to poor performance. Herein, we interconnect individual CFs through the in-situ exfoliated graphe...
BACKGROUND To determine the possible genotoxic effect of exposure to the smoke generated by biomass burning on workers involved in manual sugar cane harvesting. METHODS The frequency of micronuclei in exfoliated buccal cells and peripheral blood lymphocytes was determined in sugarcane workers in the Barretos region of Brazil, during the harvest season and compared to a control population, com...
A simple and inexpensive method to functionalize hexagonal boron nitride (hBN) was achieved by using an acid mixture of phosphoric and sulphuric acid. This functionalization induced the exfoliation of the layered structure of hBN into monolayer to few-layer sheets where the sizes of the sheets were dependent on the parent hBN powder used. Exfoliated hBN was shown to be stable in solvents such a...
We have been studying micro-luminescence of various exfoliated MoS2 akes using a confocal microscope. A crucial issue is to determine thickness of the investigated layer. The common way using atomic force microscopy, electron microscopy or the Raman spectroscopy requires moving the sample out from the confocal microscope experimental setup and looking for a particular exfoliated ake hidden amon...
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