Results 101 to 110 of about 11,482,618 (369)

Effect of Workpiece Motion on Forming Velocity in Electromagnetic Forming [PDF]

open access: yes, 2012
The effect of workpiece motion on the forming velocity is analysed by the finite element method. To study the two factors of workpiece displacement and motional electromotive force, a static model, an incomplete motional model and a complete motional ...
Han, Xiaotao   +4 more
core  

The Emerging 4D Printing of Shape‐Memory Thermomorphs for Self‐Adaptative Biomedical Implants

open access: yesAdvanced Functional Materials, EarlyView.
4D printing enables the creation of smart implants that adapt to changing conditions in the human body over time. At the core of this technology are shape‐memory thermomorphs (SMTMs). This review offers an in‐depth analysis of 4D printing with SMTMs, emphasizing the latest advancements in smart materials, stimuli, programming principles, and their ...
Aixiang Ding, Fang Tang, Eben Alsberg
wiley   +1 more source

Electromagnetic Force Distribution and Forming Performance in Electromagnetic Tube Expansion with Axial Compression

open access: yesIEEE Access, 2020
Electromagnetic tube expansion has been given much attention due to its superior cold forming properties. The traditional electromagnetic coil is of single structure, which results in substantial tube wall thinning and mechanical strength reduction. This
Li Qiu   +7 more
doaj   +1 more source

The Potential for Electromagnetic Metal Forming for Plane (Car Body) Components [PDF]

open access: yes, 2004
Classical quasi-static technologies of sheet metal forming are not the only domain of the Fraunhofer Institute for Machine Tools and Forming Technology (IWU). It also delves into techniques for high-energy rate forming, such as gas generator technology,
Blau, P.   +3 more
core  

Electromagnetic waves in a Josephson junction in a thin film

open access: yes, 1994
We consider a one-dimensional Josephson junction in a superconducting film with the thickness that is much less than the London penetration depth. We treat an electromagnetic wave propagating along this tunnel contact. We show that the electrodynamics of
A. Barone   +14 more
core   +1 more source

Softening the "crystal-scaffold" for life's emergence [PDF]

open access: yes, 2011
Del Giudice's group study how water can organize on hydrophilic surfaces forming coherent domains (loaning energy from the quantum vacuum), plus quasi-free electrons, whose excitations produce cold vortices, aligning to ambient fields. Their electric and
Mitra, Asoke Nath, Mitra-Delmotte, Gargi
core   +3 more sources

Models for Electromagnetic Metal Forming [PDF]

open access: yes, 2008
This paper presents a comparison of different simulation options for electromagnetic metal forming in order to make preliminary investigations with adequate accuracy. Four simulation models are compared. The models mainly differ in their complexity, handling and necessary precondition program packages.
Bartels, G.   +3 more
openaire   +2 more sources

Flexible Leaf‐Like Fuel Cell From Plasmonic Janus Nanosheet

open access: yesAdvanced Functional Materials, EarlyView.
A flexible leaf‐like fuel cell is fabricated by conductive gold nanowire sponge‐supported plasmonic Janus nanosheet, which can generate a power of 8.93 mW cm⁻2 with less than 10% performance deterioration even being bent or twisted. Further assembly in a tree‐like layout demonstrates omnidirectional light harvesting capability and wind resistance ...
Yifeng Huang   +3 more
wiley   +1 more source

The Kerr theorem and multiparticle Kerr-Schild solutions

open access: yes, 2005
We discuss and prove an extended version of the Kerr theorem which allows one to construct exact solutions of the Einstein-Maxwell field equations from a holomorphic generating function $F$ of twistor variables.
ALEXANDER BURINSKII   +9 more
core   +1 more source

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

open access: yesAdvanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia   +9 more
wiley   +1 more source

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