Effect of Hydroxyl Content on Thermally Induced Change in Surface Morphology of Lithium Niobate (0001) Substrates

2005 ◽  
Vol 80 (5) ◽  
pp. 1203-1207 ◽  
Author(s):  
Hirotoshi Nagata ◽  
Kaori Shima ◽  
Junichiro Ichikawa
Keyword(s):  
Lithium Niobate ◽  
Surface Morphology ◽  
Hydroxyl Content ◽  
Thermally Induced

Synthesis and characterization of silver nanoparticle nanocomposite thin films with thermally induced surface morphology changes

2015 ◽  
Vol 159 ◽  
pp. 118-121 ◽  
Author(s):  
Ernandes T. Tenório-Neto ◽  
Marcos R. Guilherme ◽  
Manuel E.G. Winkler ◽  
Lucio Cardozo-Filho ◽  
Stéphani C. Beneti ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Morphology ◽  
Silver Nanoparticle ◽  
Synthesis And Characterization ◽  
Thermally Induced ◽  
Nanocomposite Thin Films ◽  
Morphology Changes

Progress Toward Viable Epitaxial Oxide Ferroelectric Waveguide Heterostructures on Gaas

1993 ◽  
Vol 310 ◽  
Author(s):  
D. K. Fork ◽  
J. J. Kingston ◽  
G. B. Anderson ◽  
E. J. Tarsa ◽  
J. S. Speck
Keyword(s):  
Lithium Niobate ◽  
Optical Waveguides ◽  
Critical Issue ◽  
Oxide Heterostructures ◽  
Thermally Induced ◽  
Cladding Layer ◽  
Gaas Substrates ◽  
Novel Approach ◽  
Waveguide Fabrication ◽  
Epitaxial Oxide

AbstractDiscoveries within the last two years have created possibilities for the fabrication of epitaxial oxide heterostructures on GaAs substrates. In particular, magnesium oxide, MgO, may have broad applications, including its use as a cladding layer in optical waveguides. This report expands upon earlier work by revealing additional epitaxial structures involving lithium niobate which have been grown. There are now five known variants of Z-lithium niobate on GaAs: direct Z-cut growth on GaAs (111)A or B, Z-cut growth on MgO (111)/GaAs (111)A or B, and Z-cut growth on MgO (111)/GaAs (001). Broad in-plane misalignment (about 15°) characterizes the latter structure, whereas the former posses a textural width of 3° to 5° in the plane. All structures contain internal boundaries resulting from 180° rotations about the Zaxis. A critical issue for any ferroelectric heterostructure is its integrity in the presence of thermally induced tensile strain. Approaches to the mitigation of thin fim fracture are discussed and a novel approach to strain relief via ridge waveguide fabrication is reported.

scholarly journals Tailorable Surface Morphology of 3D Scaffolds by Combining Additive Manufacturing with Thermally Induced Phase Separation

2017 ◽  
Vol 38 (16) ◽  
pp. 1700186 ◽  
Author(s):  
Andrea Di Luca ◽  
Joost R. Wijn ◽  
Clemens A. Blitterswijk ◽  
Sandra Camarero‐Espinosa ◽  
Lorenzo Moroni
Keyword(s):  
Phase Separation ◽  
Additive Manufacturing ◽  
Surface Morphology ◽  
Thermally Induced Phase Separation ◽  
3D Scaffolds ◽  
Thermally Induced

Thermally Induced Magnetoelastic Effect in Planar CoNi Microparticles on Lithium Niobate

2020 ◽  
Vol 14 (9) ◽  
pp. 2000256
Author(s):  
Dmitry Anatolevich Bizyaev ◽  
Anastas Akhmetovich Bukharaev ◽  
Niaz Ilgizovich Nurgazizov ◽  
Anton Petrovich Chuklanov ◽  
Stanistav Alexandrovich Migachev
Keyword(s):  
Lithium Niobate ◽  
Thermally Induced ◽  
Magnetoelastic Effect

An Established Epithelial Cell Line (NPC/HK1) from a Nasopharyngeal Carcinoma - II. A Sem Study

1982 ◽  
Vol 40 ◽  
pp. 224-225
Author(s):  
Li C.L. ◽  
Chew E.C. ◽  
Huang D.P. ◽  
Ho H.C. ◽  
Mak L.S. ◽  
...  
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Epithelial Cell ◽  
Surface Morphology ◽  
Cell Line ◽  
Epithelial Cell Line ◽  
Present Communication ◽  
Cells In Culture ◽  
Sem Study ◽  
Well Differentiated

An epithelial cell line, NPC/HK1, has recently been successfully established from a nasopharyngeal carcinoma of the moderately to well differentiated squamous type. The present communication reports on the surface morphology of the NPC/HK1 cells in culture.

Specimen Collection Effect in Scanning Electron Microscopy Images

1972 ◽  
Vol 30 ◽  
pp. 448-449
Author(s):  
J. Temple Black ◽  
Jose Guerrero
Keyword(s):  
Surface Morphology ◽  
Secondary Electron Emission ◽  
Secondary Electrons ◽  
Charge Effects ◽  
Material Density ◽  
Specimen Collection ◽  
The Subject ◽  
Curved Paths ◽  
Subject Material ◽  
Microscopy Images

In the SEM, contrast in the image is the result of variations in the volume secondary electron emission and backscatter emission which reaches the detector and serves to intensity modulate the signal for the CRT's. This emission is a function of the accelerating potential, material density, chemistry, crystallography, local charge effects, surface morphology and especially the angle of the incident electron beam with the particular surface site. Aside from the influence of object inclination, the surface morphology is the most important feature In producing contrast. “Specimen collection“ is the name given the shielding of the collector by adjacent parts of the specimen, producing much image contrast. This type of contrast can occur for both secondary and backscatter electrons even though the secondary electrons take curved paths to the detector-collector.Figure 1 demonstrates, in a unique and striking fashion, the specimen collection effect. The subject material here is Armco Iron, 99.85% purity, which was spark machined.

Morphologies of Nonadherent Al2O3 and Matching Substrate Surfaces

1972 ◽  
Vol 30 ◽  
pp. 524-525
Author(s):  
C. S. Giggins ◽  
J. K. Tien ◽  
B. H. Kear ◽  
F. S. Pettit
Keyword(s):  
Electron Microscopy ◽  
Oxide Scale ◽  
Oxidation Resistance ◽  
Substrate Surface ◽  
Morphological Features ◽  
Thermally Induced ◽  
Oxide Spallation ◽  
Oxidation Resistant ◽  
Induced Stresses ◽  
Substrate Surfaces

The performance of most oxidation resistant alloys and coatings is markedly improved if the oxide scale strongly adheres to the substrate surface. Consequently, in order to develop alloys and coatings with improved oxidation resistance, it has become necessary to determine the conditions that lead to spallation of oxides from the surfaces of alloys. In what follows, the morphological features of nonadherent Al2O3, and the substrate surfaces from which the Al2O3 has spalled, are presented and related to oxide spallation.The Al2O3, scales were developed by oxidizing Fe-25Cr-4Al (w/o) and Ni-rich Ni3 (Al,Ta) alloys in air at 1200°C. These scales spalled from their substrates upon cooling as a result of thermally induced stresses. The scales and the alloy substrate surfaces were then examined by scanning and replication electron microscopy.The Al2O3, scales from the Fe-Cr-Al contained filamentary protrusions at the oxide-gas interface, Fig. 1(a). In addition, nodules of oxide have been developed such that cavities were formed between the oxide and the substrate, Fig. 1(a).

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