Results 51 to 60 of about 126,705,889 (309)

Topological Spin‐Texture Transitions in van der Waals Magnets Revealed by X‐Ray Fourier Transform Holography

open access: yesAdvanced Materials, EarlyView.
Applied here for the first time to a 2D material, high‐resolution synchrotron x‐ray Fourier transform holography directly images topological spin textures in Fe3GeTe2. Combined with atomistic tight‐binding simulations including itinerant electrons and Rashba spin‐orbit coupling, the approach reveals labyrinth, skyrmion, and mixed phases, and uncovers ...
Sourav Chowdhury   +16 more
wiley   +1 more source

The Sinjakya dynasty and its political relationship with the Moslem and the Ayyubid dynasty [PDF]

open access: yesآداب الرافدين, 1989
The Euphrates Island has played an important role on the stage of events in Arab Islamic history since the beginning of the first century AH, due to its political, economic and geographical importance, and this importance has increased after the weakness
Alaa Qaday
doaj   +1 more source

Elasticity‐Driven Periodic Polarization Patterns in a Chiral Ferroelectric Nematic Fluid

open access: yesAdvanced Materials, EarlyView.
Chiral polar ferroelectric nematic fluids exhibit spontaneous formation of stripe, square, and hexagonal polarization textures under confinement. Controlled by thickness and anchoring, these patterns produce spatially modulated nonlinear optical responses.
Anej Sterle   +11 more
wiley   +1 more source

Strong Coupling in Bulk Nanoplasmonic Nanoplatelet Perovskite Scintillators

open access: yesAdvanced Materials, EarlyView.
A bulk scintillating nanocomposite is engineered from CsPbBr3 nanoplatelets and Ag nanocubes to support exciton–plasmon strong coupling under X‐ray excitation. The resulting hybrid polaritonic states appear directly in radioluminescence, opening a route toward polariton‐enabled scintillator design beyond conventional Purcell enhancement.
Michal Makowski   +13 more
wiley   +1 more source

Atomistic Insights into Gradient Architecture Driven Strengthening in Additively Manufactured Cu–Ni Stepwise Graded Structures

open access: yesAdvanced Materials Interfaces, EarlyView.
Atomistic simulations reveal the interlayer mechanics of additively manufactured materials, showing how build direction and layer interfaces govern diffusion, defect evolution, and mechanical strength. Distinct anisotropic behavior arises from interface‐controlled deformation and dislocation activity, establishing critical links between microstructural
Rohit Singh, Jinoop Arackal Narayanan
wiley   +1 more source

Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing

open access: yesAdvanced Materials Technologies, EarlyView.
Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar   +5 more
wiley   +1 more source

Shooting Experiments with Early Medieval Arrowheads

open access: yesEXARC Journal, 2019
In the Merovingian era (5th-8th century AD) a lot of variously shaped iron arrowheads were used by the Franks, Alemannians and Bavarians, who dwelled in the region known today as Germany, Austria and Switzerland (See Figure 1).
Holger Riesch
doaj  

The history of Andulus during the Islamic Era and the Rule of Arabs (711 - 755 A.D) [PDF]

open access: yesتاریخ اسلام, 2000
After capturing Maghreb, Moslems sought for more conquests in order to make the field ready to spread Islam more and more. The Moslems' readiness and appropriate circumstances prepared the arrangements for the spread of Islam in a vast area, called ...
gholamreza jamshid-nezhad avval
doaj  

East meets West

open access: yesActa Periodica Duellatorum, 2017
By the Late Middle Ages, mounted troops - cavalry in the form of knights - are established as the dominant battlefield arm in North-Western Europe. This paper considers the development of cavalry after the Germanic Barbarian Successor Kingdoms such as ...
Jürg Gassmann
doaj   +1 more source

Helix Alignment, Chevrons, and Edge Dislocations in Twist‐Bend Ferroelectric Nematics

open access: yesAdvanced Science, EarlyView.
The recently discovered twist‐bend ferroelectric nematic (NTBF) is the new member of the multiferroic family, representing a fluid with an oblique helicoidal (heliconical) periodic structure of spontaneous electric polarization. The work presents a thorough exploration of the material properties of this phase, how the periodic modulation of ...
Bijaya Basnet   +8 more
wiley   +1 more source

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