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Online since: July 2011
Authors: Thomas Pardoen, Ulf Södervall, Jean Pierre Raskin, Umesh Bhaskar, Vikram Passi, Azeem Zulfiqar, Bengt Nilsson, Goran Petersson, Mats Hagberg
This could directly lift the original degeneracy of some energy levels; indeed the energy band structure of a semiconductor has its origins on the basis of crystal symmetries.
Photolithography on silicon-nitride is done followed by etching using SF6 chemistry (Fig. 3c).
SEM image of the final released structure is shown in Fig. 3d.
For the structures designed for electro-mechanical measurements the additional steps (before release) is the opening of windows at the anchors/contact pads for degenerate boron doping (necessary for tunnel contacts) and the deposition and annealing of metal (Al) for the contact pads.
Pardoen: Smart Materials and Structures Vol. 18 (2009), p. 115018
Online since: October 2014
Authors: Alain N. Gleizes, Constantin Vahlas, D. Samélor, Vincent Sarou-Kanian, Pierre Florian, Dominique Massiot
The “most amorphous structure” is that of Al2O3 grown between 480 and 550 °C.
This structure is the less propitious to grain boundary formation.
Bottyan, A MAS NMR study of the structure of amorphous alumina films, J.
Forty, Structural Chemistry of Anodic Alumina, Thin Solid Films 173 (1989) 209-213
Ahn, Structure of amorphous aluminum oxide, Phys.
Online since: May 2020
Authors: Yong Mao, Zong Bo Li, Shun Meng Zhang, Kai Xiong, Ying Jie Sun
The Monkhorst-Pack grids were employed for cubic structures (Rh, Ir, W, Ta, Nb, and Mo) while Γ-centered grids were applied for hexagonal structure (Re and Os) [21].
Fig. 1 (a) Fm-3m: Crystallographic structure of the Rh or Ir; (b) Im-3m: Crystallographic structure of the W, Ta, Nb or Mo; (c) P63/mmc: Crystallographic structure of the Re or Os.
In addition, since different crystal structures have different symmetry, the number of independent elastic constants for different crystal structures is also different.
The BCC is a non-close-packed structure, so its deformation is relatively easy compared to the closely packed FCC and HCP structures.
Journal of Physics and Chemistry of Solids 24 (1963), 909-917
Online since: September 2024
Authors: Olha Lytvynenko, Ksenia Umerenkova, Vitalii Borysenko, Hanna Koloskova, Olexandr Kondratenko
This parameter represents the number of internodal areas in the structure of the metal matrix, assigned to metal atoms, available for rooting of hydrogen.
In most intermetallic compounds, the initial crystal structure does not differ from the structure of the metal matrix in the hydride phases of IMС–hydrogen systems in the region of disordered α-, β-phases.
For the compound LaNi5 with a hexagonal structure of the CaCu5 type at the parameters a0 = 5.015×10-10 m, с0 = 3.987×10-10 m of the elementary lattice containing nM = nIMC = 6 atoms, its volume v0 = 86.84×10-30 m3.
Materials Chemistry and Physics. 316 (2024) 129099
Ju, Review on the key technologies and future development of insulation structure for liquid hydrogen storage tanks.
Online since: January 2026
Authors: Alvin Fachrully Septiano, Muhammad Beni, Tio Kurnianto, Imam Maulana, Muhammad Rizky
The drying process was optimized to achieve a consistent and defect-free structure.
As the cut-off frequency increases to 10 (B), the edge contrast becomes sharper, further defining the femoral structure.
The Gaussian High Pass Filter (GHPF) method effectively enhances image contrast and edge detection, improving the visibility of anatomical structures.
Oglat, Researching the radiation absorption and scattering of gamma rays by using different absorbers, Radiation Physics and Chemistry. 172.108810. (2020). https://doi.org/10.1016/j.radphyschem.2020.109072
Ravali, Hindlimb Skeletal Structure of the Green-winged Macaw: An Anatomical Research, http://dx.doi.org/10.56557/UPJOZ/2024/v45i104042
Online since: July 2006
Authors: Dominique Daniel, Ravi Shahani, Gilles Guiglionda, Pierre Litalien
Cost-efficient designs of aluminum autobody structures consist mainly of stampings using conventional technology.
Work hardening is also influenced by the distribution of dispersoids, which could induce an irregular and tangled dislocation structure at large strain more prone to dynamic recovery.
Friction in sheet metal forming is affected by the topographies of the interacting surfaces, their chemistry, the lubricant used and the speed and mechanics of the forming process.
Online since: May 2023
Authors: Gerardo Terán-Mendez, Liliana Medina-Almazán, Ruben Cuamatzi-Melendez, Apolinar Albiter Hernández
Fatigue Behaviour of Offshore T-Weld Connections Repaired by Grinding and Wet Welding Gerardo Teran-Mendez1,a, Rubén Cuamatzi-Meléndez2,b*, Liliana Medina-Almazán3,c and Apolinar Albiter Hernández4,d 1Department of Chemistry Engineering, National Polytechnique Institute, Zacatenco, Mexico City, Mexico, S/N. 2,4Mexican Institute of Petroleum, Eje Central Lazaro Cárdenas 152, Col.
However, such loads can produce fatigue damage, like localized cracking in the weld toes of T-welded connections of the submerged structures of fixed platforms.
Finally, it was also observed that the present research results can be used as a reference to repair submerged marine structures for water depths lower than 50 m with good confidence.
Pijpers, Use of HSS and VHSS in steel structures in civil and offshore engineering, Steel Construction, 11 (2018) 249–256
Rogalski, Underwater wet welding of S1300 ultra-high strength steel, Marine Structures, 81 (2022) 103120
Online since: July 2015
Authors: Mohammad Faraz Ahmer, Salman Hameed
The textural properties and surface chemistry of the micro- and mesoporous RH-derived ACs were evaluated [75].
The H-CMNs were thoroughly bound within the nanoporous network structure of a-CNTs atoms.
The sandwitched multilayer structures with oxide deposition improved the device performance.
Three-Dimensionally Ordered Mesoporous (3DOm) Carbon Materials as Electrodes for Electrochemical Double-Layer Capacitors with Ionic Liquid Electrolytes, Chemistry of Materials 25 (2013) 4137-4148
Chen, Structure and Capacitive Performance of Porous Carbons Derived from Terephthalic Acid−Zinc Complex via a Template Carbonization Process, Industrial & Engineering Chemistry Research 52 (2013) 16211-16219
Online since: April 2013
Authors: Hulusi Özkul, José Barroso Aguiar, Sandra Cunha
The crystal structure is strengthened by MC modification.
However, the uncovered surfaces structures spall and fall off in fire, occurring with severe explosion.
The textile reinforcement structures were coated with an epoxy resin.
The general requirement for repair of concrete structures is efficiency and durability.
Seidler, Seven well known fundamental flaws against innovations in construction chemistry, Key Engineering Materials, 466 (2011), 15-19
Online since: July 2016
Authors: Zi Kui Liu, Bi Cheng Zhou
The olivine crystal structure used in the phonon calculations is shown in Figure 7.
(This figure is reproduced from Ref. [3] with permission from The Royal Society of Chemistry.)
(This figure is reproduced from Ref. [3] with permission from The Royal Society of Chemistry.)
A snapshot of the amorphous structure of LLTO at 300K is shown in Figure 21.
Martin, Electronic Structure: Basic Theory and Practical Methods, Book. (2004) 624