Results 61 to 70 of about 151,167 (221)

Nanoscale Agglomeration Mechanisms of BF‐DPB:BPyMPM Donor–Acceptor Systems for Organic Optoelectronic Devices

Advanced Functional Materials, EarlyView.
The intermolecular and molecule‐substrate interactions and resulting molecular assembly of the OLED and OPV donor and acceptor molecules BF‐DPB and BPyMPM are investigated on different single crystalline substrates using high‐resolution scanning probe microscopy.
Milena Merkel, Philipp Wiesener, Robert Schmidt, Rishi Shivhare, Nikos Doltsinis, Rudolf Bratschitsch, Saeed Amirjalayer, Koen Vandewal, Harry Mönig   +8 more
wiley   +1 more source

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

Advanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton, Naëmi Leo, Jakub Jurczyk, Claire Donnelly, Dédalo Sanz‐Hernández, Luka Skoric, Nicholas Mille, Stefan Stanescu, Donald A MacLaren, Rachid Belkhou, Aurelio Hierro‐Rodriguez, Amalio Fernández‐Pacheco   +11 more
wiley   +1 more source

Magnetic Field Amplification during Stellar Collisions between Low-mass Stars

The Astrophysical Journal Letters
Blue straggler stars in stellar clusters appear younger and bluer than other cluster members, offering a unique opportunity to understand the stellar dynamics and populations within their hosts.
Taeho Ryu, Alison Sills, Ruediger Pakmor, Selma de Mink, Robert Mathieu   +4 more
doaj   +1 more source

Blue stragglers as the source of the high-velocity A stars

The Astrophysical Journal, 1988
A quantitative estimate of the contribution of blue stragglers to the stellar population in the solar neighborhood is made, with particular attention to the spatial distribution of early-type stragglers at large distance from the Galactic plane. Blue stragglers are assumed to be created in the disk at a rate consistent with the empirical data from open
Bruce A. Twarog, Joseph C. Shields
openaire   +2 more sources

Proposing Altermagnetic‐Ferroelectric Type‐III Multiferroics with Robust Magnetoelectric Coupling

Advanced Materials, EarlyView.
Multiferroics are highly sought after for advanced technological applications. Here, a novel class of type‐III multiferroics is proposed, where ferroelectricity and altermagnetism are inherently interlocked by crystal symmetry, setting them apart from conventional multiferroics. The ferroelectric switching is shown to fully invert the spin polarization
Wei Sun, Changhong Yang, Wenxuan Wang, Ying Liu, Xiaotian Wang, Shifeng Huang, Zhenxiang Cheng   +6 more
wiley   +1 more source

Transitory Tidal Heating and Its Impact on Cluster Isochrones

The Astrophysical Journal
The kinetic energy in tidal flows, when converted into heat, can affect the internal structure of a star and shift its location on a color–magnitude diagram from that of standard models.
S. Jane Arthur, Gloria Koenigsberger, Kristin Brady, Diana Estrella-Trujillo, Catherine Pilachowski   +4 more
doaj   +1 more source

An Analytic Model for Blue Straggler Formation in Globular Clusters [PDF]

, 2011
We present an analytic model for blue straggler formation in globular clusters. We assume that blue stragglers are formed only through stellar collisions and binary star evolution, and compare our predictions to observed blue straggler numbers taken from the catalogue of Leigh, Sills & Knigge (2011).
arxiv   +1 more source

A Binary Origin for Blue Stragglers in Globular Clusters [PDF]

Nature, 457, 288 (2008), 2009
Blue stragglers in globular clusters are abnormally massive stars that should have evolved off the stellar main sequence long ago. There are two known processes that can create these objects: direct stellar collisions and binary evolution. However, the relative importance of these processes has remained unclear.
arxiv   +1 more source

Gate‐Tunable Exchange Bias and Voltage‐Controlled Magnetization Switching in a van der Waals Ferromagnet

Advanced Materials Interfaces, EarlyView.
Their research explores van der Waals magnets and uses a perpendicularly magnetized FGT/O‐FGT/hBN heterostructure to demonstrate gate voltage‐controlled magnetization switching. They observe bidirectional voltage control of exchange bias (EB), with the highest EB magnitude of 1.4 kOe and a blocking temperature of 150 K, both among the highest for ...
Mayank Sharma, Garen Avedissian, Witold Skowroński, Junhyeon Jo, Andrey Chuvilin, Fèlix Casanova, Marco Gobbi, Luis E. Hueso   +7 more
wiley   +1 more source

Stellar Encounters with Multiple Star Systems and the Blue Straggler Problem [PDF]

AIP Conference Proceedings, 2010
We present a technique to identify the most probable dynamical formation scenario for an observed binary or triple system containing one or more merger products or, alternatively, to rule out the possibility of a dynamical origin. Our method relies on an analytic prescription for energy conservation during stellar encounters. With this, observations of
Nathan Leigh, Alison Sills, Vicky Kologera, Marc van der Sluys   +3 more
openaire   +4 more sources