Results 261 to 270 of about 6,397,764 (332)

Tunable and Persistent Macroscopic Polarization in Nominally Centrosymmetric Defective Oxides

open access: yesAdvanced Materials, EarlyView.
This work introduces an approach to defect‐mediated symmetry breaking and built‐in polarization in nominally centrosymmetric defective oxides, Gd‐doped CeO2‐δ films, by controlling macroscopic charge asymmetry. Electric field‐driven asymmetric redistribution of oxygen vacancies induces a switchable, stable polarization, leading to a notable, persistent
Dae‐Sung Park   +10 more
wiley   +1 more source

Materials and Device Engineering Perspective: Recent Advances in Organic Photovoltaics

open access: yesAdvanced Materials, EarlyView.
This review article provides a comprehensive overview of recent advances in organic photovoltaics (OPVs), covering key aspects such as material development, morphology control, stability challenges, and emerging applications—including semitransparent OPVs.
Ying Zhang   +4 more
wiley   +1 more source

Terahertz Electronic and Spin Currents in Wafer‐Scale Van der Waals Bi2Se3/WSe2 Heterostructures and Polymorphs

open access: yesAdvanced Materials, EarlyView.
Van der Waals heterostructures offer exciting possibilities for artificial materials with unique optical, electronic, and spintronic properties. However, their use in the terahertz (THz) range is limited due to material constraints. This study demonstrates scalable, large‐area, crystalline 2D heterostructures, combining topological insulators ...
M. Mičica   +22 more
wiley   +1 more source

Minimum Orbital Period of Precataclysmic Variables

open access: green, 2019
L. A. Nelson   +3 more
openalex   +1 more source

AC Current‐Driven Magnetization Switching and Nonlinear Hall Rectification in a Magnetic Topological Insulator

open access: yesAdvanced Materials, EarlyView.
This study reports alternating‐current (AC) driven magnetization reversal in a semi‐magnetic topological insulator (Cr,Bi,Sb)2Te3/(Bi,Sb)2Te3, with low current density. Time‐domain Hall voltage measurements reveal a nonlinear and rectified Hall effect, along with higher‐harmonic responses and hysteresis.
Yuto Kiyonaga   +9 more
wiley   +1 more source

Epigenomic profiling of immune cell subtypes reveals H3K27ac-marked stress signatures after long-duration spaceflight. [PDF]

open access: yesSci Rep
Fullstone TL   +5 more
europepmc   +1 more source

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