Results 21 to 30 of about 7,283 (226)

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Right round: Onset and long-term evolution of rotation in star clusters

Astronomy & Astrophysics
We present the results of a detailed kinematic analysis of a significant fraction of the known population of Galactic star clusters aimed at constraining the physical mechanisms driving the onset and evolution of cluster rotation.
Dalessandro E., Della Croce A., Vesperini E., Cadelano M., Leanza S., Ettorre G., Hughes M.   +6 more
doaj   +1 more source

Scalar perturbations in f(T) gravity using the $$1 + 3$$ 1+3 covariant approach

European Physical Journal C: Particles and Fields, 2020
The cosmological scalar perturbations of standard matter are investigated in the context of extended teleparallel f(T) gravity theories using the $$1+3$$ 1+3 covariant formalism.
Shambel Sahlu, Joseph Ntahompagaze, Amare Abebe, Álvaro de la Cruz-Dombriz, David F. Mota   +4 more
doaj   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

Development of Multifunctional Hierarchically Restructured Antibacterial Neural Interfacing Electrodes via Plasma‐Enhanced Atomic Layer Deposition of Zinc Oxide Thin Films

Advanced Functional Materials, EarlyView.
ABSTRACT Next‐generation implantable neural‐interfacing devices are increasingly constrained by the coupled demands of electrode miniaturization, electrochemical performance, and implantation infection risk. Femtosecond laser–based hierarchical surface restructuring (HSR) technology has emerged as a scalable, manufacturing‐compatible platform for ...
Henna Khosla, Wesley Seche, Kriti Panchal, Steven J. May, Ekaterina Pomerantseva, Jacob Elmer, Tyler Cooper, Matthew J. Urban, Hailey Y. Maurer, Gregory A. Caputo, Jeffrey Hettinger, Shahram Amini, Gang Feng   +12 more
wiley   +1 more source

Broad-band modelling of the GRB 230812B afterglow: Implications for very-high-energy γ-ray detections with IACTs

Astronomy & Astrophysics
A significant fraction of the energy from the gamma-ray burst (GRB) jets, after powering the keV–MeV emission, forms an ultra-relativistic shock propagating into the circum-burst medium.
Mohnani S., Banerjee B., Miceli D., Nava L., Oganesyan G., Tiwari P., Ierardi A., De Santis A. L., Macera S., Shukla A., Branchesi M., Chatterjee S., Agarwal S., Datta A., Yadav K. K., Anupama G. C.   +15 more
doaj   +1 more source

Electrostatic Superlattices Beyond 1:1 Stoichiometry

Advanced Functional Materials, EarlyView.
Polymer‐mediated charge regulation drives two hierarchical routes to higher‐stoichiometry nanoparticle superlattices. Tuning the polymer's molecular weight promotes progressive interstitial filling, transforming ZnS into the fully occupied CaF2${\rm CaF}_2$ lattice. Exchanging polymer assignment between large and small nanoparticles instead breaks CsCl
Binay P. Nayak, Prapti Kakkar, Wesley P. Korba, Honghu Zhang, Wenjie Wang, Surya K. Mallapragada, Alex Travesset, David Vaknin   +7 more
wiley   +1 more source

The Universe Observed with Particle Detectors: Astrophysical Legacy of Guido Barbiellini Amidei

Condensed Matter
The development of modern high-energy astrophysics has been deeply intertwined with advances in particle detector technology. Guido Barbiellini Amidei (1943–2024) played a pivotal role in bridging experimental particle physics and astrophysical ...
Roberto Capuzzo Dolcetta
doaj   +1 more source

Spin Dynamics in the van der Waals Ferromagnet CrTe2 Engineered by Niobium Doping

Advanced Functional Materials, EarlyView.
Spin‐dynamic magnetic properties of van der Waals (vdW) ferromagnet 1T‐CrTe2 are tuned via niobium (Nb) as Cr1‐xNbxTe2 (x = 0–0.2). Nb doping enables wide‐band tuning of the resonance frequency from 40 GHz down to the few‐GHz regime, accompanied by a moderate increase in the Gilbert damping from ∼0.066 to ∼0.14.
Dhan Raj Lawati, Prem Bahadur Karki, Jitender Kumar, Karishma Prasad, Mohamed A. Elekhtiar, Kai Huang, Bibek Tiwari, Suvechhya Lamichhane, Rupak Timalsina, Zane Hubble, Ayodimeji E. Aregbesola, John Watt, Sy‐Hwang Liou, Evgeny Y. Tsymbal, Jian Wang, Kapildeb Ambal, Abdelghani Laraoui   +16 more
wiley   +1 more source

HST pre-imaging of a free-floating planet candidate microlensing event

Astronomy & Astrophysics
High-cadence microlensing observations uncovered a population of very short-timescale microlensing events, which are believed to be caused by the population of free-floating planets (FFPs) roaming the Milky Way.
Kapusta Mateusz, Mróz Przemek, Ryu Yoon-Hyun, Udalski Andrzej, Kozłowski Szymon, Terry Sean, Szymański Michał K., Soszyński Igor, Pietrukowicz Paweł, Poleski Radosław, Skowron Jan, Ulaczyk Krzysztof, Gromadzki Mariusz, Rybicki Krzysztof, Iwanek Patryk, Wrona Marcin, Mróz Mateusz J., Albrow Michael D., Chung Sun-Ju, Gould Andrew, Han Cheongho, Hwang Kyu-Ha, Jung Youn Kil, Shin In-Gu, Shvartzvald Yossi, Yee Jennifer C., Yang Hongjing, Zang Weicheng, Cha Sang-Mok, Kim Dong-Jin, Kim Seung-Lee, Lee Chung-Uk, Lee Dong-Joo, Lee Yongseok, Park Byeong-Gon, Pogge Richard W.   +35 more
doaj   +1 more source