Results 21 to 30 of about 22,611,724 (309)

A Method for Prediction of Ultrasonic Detectability of Interface Gap Defects on TC4 Diffusion-Bonded Joints

open access: yesNanomaterials, 2022
An analysis method for the detectability of defects on the TC4 (Ti-6Al-4V) diffusion bonding interface was proposed in this study. First, a semi-analytical model of the liquid–solid coupling acoustic field with attenuation characteristics was constructed.
Lichen Teng, Zhenggan Zhou
doaj   +1 more source

Correlative Theoretical and Experimental Study of the Polycarbonate | X Interfacial Bond Formation (X = AlN, TiN, (Ti,Al)N) During Magnetron Sputtering

open access: yesAdvanced Materials Interfaces, 2023
To understand the interfacial bond formation between polycarbonate (PC) and magnetron‐sputtered metal nitride thin films, PC | X interfaces (X = AlN, TiN, (Ti,Al)N) are comparatively investigated by ab initio simulations as well as X‐ray photoelectron ...
Lena Patterer   +7 more
doaj   +1 more source

NBO/NRT Two-State Theory of Bond-Shift Spectral Excitation

open access: yesMolecules, 2020
We show that natural bond orbital (NBO) and natural resonance theory (NRT) analysis methods provide both optimized Lewis-structural bonding descriptors for ground-state electronic properties as well as suitable building blocks for idealized “diabatic ...
Yinchun Jiao, Frank Weinhold
doaj   +1 more source

Interacting Quantum Atoms—A Review

open access: yesMolecules, 2020
The aim of this review is threefold. On the one hand, we intend it to serve as a gentle introduction to the Interacting Quantum Atoms (IQA) methodology for those unfamiliar with it.
José Manuel Guevara-Vela   +3 more
doaj   +1 more source

Bond Insertion at Distorted Si(001) Subsurface Atoms

open access: yesInorganics, 2018
Using density functional theory (DFT) methods, we analyze the adsorption of acetylene and ethylene on the Si(001) surface in an unusual bond insertion mode. The insertion takes place at a saturated tetravalent silicon atom and the insight gained can thus
Lisa Pecher, Ralf Tonner
doaj   +1 more source

Research progress on the methods of observation and analysis of dental bonding interfaces

open access: yes口腔疾病防治, 2021
Dental bonding technology and materials have been used widely in dentistry because of their excellent properties. The development of novel bonding technology and materials is constantly being performed to improve the effect of dental bonding restorations.
MA Chaoqun   +5 more
doaj   +1 more source

Design Analysis of Adhesively Bonded Structures [PDF]

open access: yesPolymers, 2017
The existing analytical solutions for the peeling and shearing stresses in polymeric adhesively bonded structures are either too inaccurate or too complex for adoption by practicing engineers. This manuscript presents a closed-form solution that is reasonably accurate yet simple and concise enough to be adopted by practicing engineers for design ...
Wong, Ee-Hua, Liu, Johan
openaire   +3 more sources

Analysis of Oxygen–Pnictogen Bonding with Full Bond Path Topological Analysis of the Electron Density [PDF]

open access: yesInorganic Chemistry, 2021
A variety of methods are available to investigate the bonding in inorganic compounds. In contrast to wavefunction-based analyses, topological analysis of the electron density affords the advantage of analyzing a physical observable: the electron density.
Brent Lindquist-Kleissler   +2 more
openaire   +5 more sources

Effect of nanotopogranphy in direct wafer bonding: modeling and measurements [PDF]

open access: yes, 2005
Nanotopography, which refers to surface height variations of tens to hundreds of nanometers that extend across millimeter-scale wavelengths, is a wafer geometry feature that may cause failure in direct wafer bonding processes.
W.A. Baylies   +12 more
core   +1 more source

Semiquantal analysis of hydrogen bond [PDF]

open access: yesThe Journal of Chemical Physics, 2006
The semiquantal time-dependent Hartree (SQTDH) theory is applied to the coupled Morse and modified Lippincott-Schroeder (LS) model potentials of hydrogen bond. The structural correlation between the heavy atoms distance and the proton position, the geometric isotope effect, the energy of hydrogen bond formation, and the proton vibrational frequency ...
openaire   +2 more sources

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