Results 171 to 180 of about 118,171 (236)

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

Advanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh, Ymir K. Frodason, Clemens Petersen, Benjamin M. Janzen, Luca Sung‐Min Choi, Nils Bernhardt, Felix Nippert, Zbigniew Galazka, Joel B. Varley, Holger von Wenckstern, Lasse Vines, Markus R. Wagner   +11 more
wiley   +1 more source

Atomic state interferometry for complex vector light. [PDF]

Nanophotonics
Samanta K, Svensson SJ, Franke-Arnold S, Westerberg N.   +3 more
europepmc   +1 more source

Radiation Effects in Electret Organic Thin‐Film Transistors Due to High Flux and High Dose X‐Ray Irradiation

Advanced Materials, Volume 38, Issue 8, 6 February 2026.
Electret‐style organic thin‐film transistors are evaluated for synchrotron X‐ray dosimetry at ultra‐high dose rates, showing promising performance and agreement with standard detectors. XPS and NEXAFS reveal radiation‐induced oxidation and Fermi level shifts in pentacene and polystyrene, correlating with reduced charge carrier mobility and providing ...
Alexandria Mitchell, Jessie A. Posar, James Cayley, Georgia York, Michael Lerch, Attila J. Mozer, Igor Píš, Elena Magnano, Luca Tosti, Maddalena Pedio, Alasdair Syme, Ian G. Hill, Marco Petasecca   +12 more
wiley   +1 more source

Calculation of Vibrational Circular Dichroism Spectra Employing Nuclear Velocity Perturbation or Magnetic Field Perturbation Theory Using an Atomic-Orbital-Based Linear Response Approach. [PDF]

J Phys Chem A
Kumar R, Luber S.
europepmc   +1 more source

Control of Covalent Bond Enables Efficient Magnetic Cooling

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang, Yoshio Miura, Noriki Terada, Enda Xiao, Shintaro Kobayashi, Allan Döring, Terumasa Tadano, Andres Martin‐Cid, Takuo Ohkochi, Shogo Kawaguchi, Yoshitaka Matsushita, Tadakatsu Ohkubo, Tetsuya Nakamura, Konstantin Skokov, Oliver Gutfleisch, Kazuhiro Hono, Hossein Sepehri‐Amin   +16 more
wiley   +1 more source

Mitigating Singlet Exciton Back‐Transfer using 2D Spacer Layers for Perovskite‐Sensitised Upconversion

Advanced Optical Materials, Volume 14, Issue 6, 9 February 2026.
The efficiency of bulk perovskite‐sensitised upconversion is hindered by parasitic singlet back‐transfer. A 2D perovskite spacer layer is introduced to weaken this loss pathway by increasing the separation between the sensitiser and the emitter. The spacer layer enhances the upconversion efficiency at lower excitation powers and improves the stability ...
Nicholas P. Sloane, Damon M. de Clercq, Md Arafat Mahmud, Jianghui Zheng, Adrian Mena, Guoliang Wang, Michael P. Nielsen, Anita W.Y. Ho‐Baillie, Christopher G. Bailey, Timothy W. Schmidt, Dane R. McCamey   +10 more
wiley   +1 more source

Machine learning-driven prediction of ultrafast spin relaxation in metal halide perovskites for spintronic applications. [PDF]

Chem Sci
Li J, Chen M, Wang P, Li X, Huang Y, Ding K, Mao L, Xiang XD, Chen X.   +8 more
europepmc   +1 more source

Epsilon‐Negative Derived Electromagnetic Wave Absorption of Magnetic Metacomposites by Bifunctional Phase Paradigm

Advanced Science, Volume 13, Issue 7, 3 February 2026.
An epsilon‐negative response of up to 100000 in the radio frequency band is achieved by creating a metacomposite system with graphene/iron (III) oxide as the main body. The magnetic metacomposites are just like the mythical creature Qiongqi in Chinese mythology, capable of swallowing electromagnetic wave pollution that falls from the sky.
Xiance Zhu, Yunpeng Qu, Qiuyun Yang, Jing Mao, Xiaosi Qi, Yunlei Zhou, Chunyuan Deng, Shicheng Qiu, Yao Liu   +8 more
wiley   +1 more source

Joint Inversion of Radionuclide Production Rate Data and Thermoremanent Magnetic Records over the Holocene. [PDF]

Sol Phys
Schanner MA, Nilsson A, Muscheler R.
europepmc   +1 more source

Luminescent Chiral Molecular Glasses by Melt‐Quenching Enantiopure BINAP

Advanced Science, Volume 13, Issue 8, 9 February 2026.
Melt‐quenching of enantiopure BINAP yields transparent chiral molecular glasses that retain axial chirality and display blue‐shifted luminescence together with strongly enhanced circularly polarized emission with dissymmetry factors |glum| of ≈10−2.
Nuttaporn Krittametaporn, Philipp Ralle, Dorothea Dierks, Christian Nelle, Suresh K. Vasa, Pascal Kolodzeiski, Rasmus Linser, Andreas Steffen, Sebastian Henke   +8 more
wiley   +1 more source