Abstract:
:In the way of making graphene an industry-friendly material, it must be mass-produced with high-quality and reduced cost over large areas. Assisted by machine-learning techniques, rapid, nondestructive and accurate determination of large graphene sheets on SiO2 /Si substrates has been made possible in recent years by the optical microscopy method. Optimization of the substrate to achieve the maximum contrast can further extend the application of the optical microscopy method for quality control of the mass-produced graphene. Graphene/n2 /n3 three-layer structures, where n2 and n3 are refractive indices, are routinely used for identifying the number of graphene layers by optical reflection microscopy. In this paper, two analytical equations are derived that can be easily used for high-contrast optical imaging of graphene sheets without any need to resort to the cumbersome numerical methods. One of the equations is derived for choosing the best material with refractive index n2 that when coated on a substrate with refractive index n3 , maximizes the optical contrast. The other equation is derived for finding the best thickness of the SiO2 layer in graphene/SiO2 /Si structures, which are in common use for fabrication of graphene-based devices. The results are implemented in a MATLAB GUI, see Supporting Information, to assist the users in using the equations.
journal_name
Microsc Res Techjournal_title
Microscopy research and techniqueauthors
Rashidian Vaziri MRdoi
10.1002/jemt.23505subject
Has Abstractpub_date
2020-09-01 00:00:00pages
1132-1140issue
9eissn
1059-910Xissn
1097-0029journal_volume
83pub_type
杂志文章abstract::Despite the great number of studies devoted to neural stem/progenitor cell biology, the ultrastructural characteristics of these cells in vitro have not been fully studied. To determine the fine structure of hippocampal neural progenitor cells (NPCs) in culture, mouse fetal hippocampi (E18) were extracted, dissected, ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22454
更新日期:2015-02-01 00:00:00
abstract::Magnetotactic bacteria orient and migrate along geomagnetic field lines. Each cell contains membrane-enclosed, nano-scale, iron-mineral particles called magnetosomes that cause alignment of the cell in the geomagnetic field as the bacteria swim propelled by flagella. In this work we studied the ultrastructure of the f...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20380
更新日期:2007-01-01 00:00:00
abstract::Progressive multifocal leukoencephalopathy is an important viral opportunistic infection of oligodendrocytes leading to direct demyelination. Virus is likely disseminated to the brain via the blood. However, the timing of that dissemination with relationship to clinical disease is unknown. Important clues about viral ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.1070320405
更新日期:1995-11-01 00:00:00
abstract::In the current investigation, 16 samples of six species of the genus Polygonatum were collected from different geographical regions in China. Leaf micromorphological traits were studied in detail using scanning electron microscopy. About five-leaf samples were used for each species collected from different geographica...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23529
更新日期:2020-11-01 00:00:00
abstract::The aim of this study was to evaluate the effect of final irrigation protocols (17% EDTA, BioPure MTAD, SmearClear, and QMiX) on microhardness and erosion of root canal dentin. Fifty roots were sectioned transversely at the cement-enamel junction and each root was sectioned horizontally into 4-mm-thick slices. The sam...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22268
更新日期:2013-10-01 00:00:00
abstract::Directed growth cone movement is crucial for the correct wiring of the nervous system. This movement is governed by the concerted actions of cell surface receptors, signaling proteins, cytoskeleton-associated molecules, and molecular motors. In order to investigate the molecular basis of growth cone motility, we appli...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(20000115)48:2<97::AID-JEMT
更新日期:2000-01-15 00:00:00
abstract::The human dentin-enamel junction (DEJ) is a natural junction that unites two dissimilar mineralized tissues in the human tooth: enamel and dentin. DEJ plays a critical role in maintaining structural and functional integrity of the tooth. However, its structure, chemical composition and function remain unclear and cont...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23648
更新日期:2020-11-19 00:00:00
abstract::Several processing techniques of digital images allowed us to quantify the percentage of cell surface covered by microprojections (microvilli or microplicae) (SCM), the adhesion between epithelial cells by the parameter intercellular junctions (IJ), the size (cell area), shape (cell shape) and shade (cell shade) of ce...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20833
更新日期:2010-10-01 00:00:00
abstract::We present a microscopic investigation of nanocomposite films of iron oxide (γ-Fe(2)O(3)) magnetic nanowires (NWs) aligned into polymers, formed upon evaporation of solutions of acrylate polymer/magnetic nanoparticles under magnetic field (MF). The field causes the assembly of the γ-Fe(2)O(3) nanoparticles along the d...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20848
更新日期:2010-10-01 00:00:00
abstract::A cognitive task can often be subdivided into several subprocesses, which follow a specific temporal order. Here, we report an event-related functional magnetic resonance imaging (fMRI) experiment on memory search, in which the temporal onset of search in primary memory was varied relative to retrieval from secondary ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/1097-0029(20001001)51:1<29::AID-JEMT3>3.0.
更新日期:2000-10-01 00:00:00
abstract::Uranium-contaminated soils from the U.S. Department of Energy (DOE) Fernald Site, Ohio, have been examined by a combination of backscattered electron imaging (BSE) and analytical electron microscopy with electron diffraction (AEM). The inhomogeneous distribution of particulate uranium phases in the soil required the d...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.1070310208
更新日期:1995-06-01 00:00:00
abstract::The ultrastructure of adult human articular cartilage matrix is reexamined in tissue processed according to recently improved cryotechniques [Studer et al. (1995) J. Microsc., 179:321-332]. In truely vitrified tissue, a network of fine cross-banded filaments (10-15 nm in diameter) with a periodicity characteristic of ...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19970515)37:4<271::AID-JEM
更新日期:1997-05-15 00:00:00
abstract::The glycoconjugate pattern of developing ovarian follicles in wild and cultured Senegalese sole Solea senegalensis was investigated by means of lectin histochemistry. Ovaries from cultured fish contained oocytes up to the late vitellogenic stage, whereas they reached the hydration stage in wild specimens. The follicul...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22040
更新日期:2012-08-01 00:00:00
abstract::Shape from focus (SFF) is a widely used passive optical method for 3D shape reconstruction. In SFF, a focus measure, which is used to estimate the relative focus level, plays a critical role in depth estimation. In this article, we present a new focus measure for accurate 3D shape estimation in optical microscopy base...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23386
更新日期:2020-01-01 00:00:00
abstract::Common mulberry weed (Fatoua villosa (Thunb.) Nakai) and creeping amaranth (Amaranthus crassipes Schlecht) are reported for the first time in Pakistan's flora as these were not listed in any other literature nor identified before in Pakistan. Plants were found as a result of taxonomic studies performed in 2013 in Pesh...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23000
更新日期:2018-05-01 00:00:00
abstract::Nowadays the processes of crossing of different mammalian species are well characterized in light of genetics, and possibility of reproduction. Generally, lack detailed studies on changes in anatomy and histology of internal systems of hybrids. Bison bonasus hybrid is an interspecific species between the bull of Europ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23516
更新日期:2020-10-01 00:00:00
abstract::The present investigation was designed to throw light on the microbial status of bakery products available in bakeries and supermarkets of Lahore. Different bakery samples such as biscuits, pizza, patties were collected from different localities such as Anar Kali, Chauburji, Faisal Town, Iqbal Town, Model Town, Muslim...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23103
更新日期:2019-02-01 00:00:00
abstract::Gymnosporia arenicola Jordaan (Celastraceae) is a shrub or small tree, which naturally occurs in coastal sand dunes of Southern Mozambique and South Africa. Its dried leaf is often used in traditional medicine for the treatment of infectious and inflammatory diseases. Hereby, we present results of studies carried out ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22565
更新日期:2015-11-01 00:00:00
abstract::With an increase in the advancement of digital imaging and computing power, computationally intelligent technologies are in high demand to be used in ophthalmology cure and treatment. In current research, Retina Image Analysis (RIA) is developed for optometrist at Eye Care Center in Management and Science University. ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22867
更新日期:2017-07-01 00:00:00
abstract::Anatomical study of leaf xylary vessel elements of Carthamus oxycantha under various intensities of lead (Pb) and nickel (Ni) stress (200, 400, 600, and 800 mg Pb(NO3 )2 , NiCl2 ·6H2 O/kg of the soil) was conducted. The deformations caused due to metal stress were detected using point-based image registration techniqu...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23476
更新日期:2020-07-01 00:00:00
abstract::The present paper covers the results of different transmission electron microscopy studies on silver halide microcrystals. Pure AgBr as well as core-shell AgBr-AgBrI crystals are investigated. In the former parallel and non-parallel twinning modes yielding tabular and needle- or tetrahedral-shaped microcrystals, respe...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0029(19980715)42:2<85::AID-JEMT
更新日期:1998-07-15 00:00:00
abstract::This manuscript reviews gap junctions' roles in control of intestinal motility. Gap junctions (GJs) of small intestine (SmIn) are found between circular muscle (CM) cells, between interstitial cells of Cajal (ICC) of deep muscular plexus (DMP) and between them and adjacent outer circular muscle (OCM). GJs between long...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19991201)47:5<309::AID-JEM
更新日期:1999-12-01 00:00:00
abstract::In recent years, the zebrafish Danio rerio has emerged as a powerful model organism for the study of vertebrate embryogenesis. Zebrafish, like other vertebrates, possess pigment cells that arise from two distinct embryonic sources: those of the dermis and epidermis originate from the neural crest, while those that com...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.10161
更新日期:2002-09-15 00:00:00
abstract::The ruminant placenta has a very uniform gross structure based on localised areas of fetomaternal membrane apposition and proliferation to form placentomes. There is no consistency, however, in the number or size of these placentomes (6-150), nor in the villus architecture of the individual placentome. The one consist...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19970701/15)38:1/2<88::AID
更新日期:1997-07-01 00:00:00
abstract::We summarize the molecular phenotype, diagnostic criteria, and the newest advances related to seeking the pathogenic mechanism(s) of sporadic inclusion-body myositis (s-IBM), a muscle disease usually of persons over age 50. On the basis of our research, several processes seem to be important in relation to the still-s...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/jemt.20186
更新日期:2005-07-01 00:00:00
abstract::A major challenge when performing scanning electron microscopy and X-ray analysis on many ceramic materials is their electrical insulation properties, which leads to buildup of the surface charge and reduced contrast in the secondary electron image. A new procedure was established to quantitatively determine the neutr...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23118
更新日期:2018-10-01 00:00:00
abstract::Pituitary-derived factors, including ACTH, have been widely implicated in initiating adrenal regeneration. However, recent work has demonstrated that adrenal regeneration is also modulated by adrenal nerves that extensively reinnervate the regenerating adrenal. Moreover, transection of the splanchnic nerve removes sen...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.10334
更新日期:2003-06-15 00:00:00
abstract::We have in recent studies presented unexpected immunohistochemical evidence favoring the existence of a local production of catecholamines, and an occurrence of adrenergic receptors on the tendon cells (tenocytes), in the human patellar tendon. This was particularly noticed for tendons from patients suffering from ten...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20495
更新日期:2007-10-01 00:00:00
abstract::Iris L. is one of the important genus of family Iridaceae, consist of 56 taxa naturally occurred in Turkey. The similarities and variations in the subgenus overlapping the taxonomic positions of the species in the subgenera and needs anatomical assessment especially by microscopic techniques. In this study, the taxono...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23221
更新日期:2019-06-01 00:00:00
abstract::Isoform diversity in striated muscle is largely controlled at the level of transcription. In this review we will concentrate on studies concerning transcriptional regulation of the alkali myosin light chain 1F/3F gene. Uncoupled activity of the MLC1F and 3F promoters, together with complex patterns of transcription in...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/1097-0029(20000915)50:6<510::AID-JEMT8>3.0
更新日期:2000-09-15 00:00:00