Results 151 to 160 of about 2,117,850 (329)
Multi-Skein Invariants for Welded and Extended Welded Knots and Links [PDF]
arXiv, 2018 The theory of welded and extended welded knots is a generalization of classical knot theory. Welded (resp. extended welded) knot diagrams include virtual crossings (resp. virtual crossings and wen marks) and are equivalent under an extended set of Reidemeister-type moves.
arxiv
О некоторых особенностях структуры участков коры выветривания серпентинитов Кемпирсайского массива [PDF]
, 1953 New diode laser devices use the modular character of diode lasers to form beam shapes that are adapted to the processing task. In this paper cutting and welding applications of these tools are presented.
Benter, C. +3 more
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Physics Procedia, 2014 AbstractUp to date the evaporation process in laser beam welding of alloys with volatile elements is not completely understood. This paper discusses the phenomena occurring at the welding process of brass with 37m% zinc. Since copper has a solidification temperature of 1,087°C and zinc vaporizes at a temperature of 907°C, a strong evaporation takes ...
Konstantin Hofmann +3 more
openaire +2 more sources
Applications of Laser Welding in Dentistry: A State-of-the-Art Review
Micromachines, 2018 The dental industry without lasers is inconceivable right now. This captivating technology has outlasted other possible alternative technologies applied in dentistry in the past due to its precision, accuracy, minimal invasive effect as well as faster ...
Asma Perveen, C. Molardi, C. Fornaini
semanticscholar +1 more source
Advanced Materials Technologies, EarlyView.This study employs a CFD model to simulate laser cutting of copper current collectors used for Li‐Ion battery production. This model predicts cut edge quality by assessing the influence of power, scanner speed, and foil thickness. Defects are classified and an optimal working area is found.
Caterina Angeloni +3 more
wiley +1 more source
Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials
Advanced Robotics Research, EarlyView.Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira +5 more
wiley +1 more source
Advanced Theory and Simulations, EarlyView.This study proposes a model for the electrical transport properties of random networks of metal oxide nanowires. Based on the characteristic lengths and energies of nanowires, it allows for discussing the transition from the junction‐dominated to the nanowire‐dominated transport regime.
Andrea Ponzoni
wiley +1 more source
Integration of an optical fiber taper with an optical microresonator fabricated in glass by femtosecond laser 3D micromachining [PDF]
arXiv, 2014 We report on fabrication of a microtoroid resonator of a high-quality factor (i. e., Q-factor of ~3.24x10^6 measured under the critical coupling condition) using femtosecond laser three-dimensional (3D) micromachining. Coupling of light into and out of the microresonator has been realized with a fiber taper that is reliably assembled with the ...
arxiv
Advanced Science, EarlyView.A reconfigurable microneedle electrode array integrated system is developed for minimally invasive and transdermal monitoring of subcutaneous electromyography, reactive oxygen species, and pH values. By assembling discrete thumbtack‐shaped microneedles into an array, the system enables multi‐parameter detection with single‐microneedle resolution.
Zhengjie Liu +12 more
wiley +1 more source
Многопроходная сварка сталей больших толщин с использованием лазерного излучения [PDF]
, 2005 Описана технология много проходной автоматизированной лазерной и лазерно-дуговой сварки конструкционных сталей толщиной до 20 мм. Производительность гибридного способа сварки выше в несколько раз по сравнению с лазерной сваркой.Technology of automated ...
Бернацкий, А.В. +6 more
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