Results 101 to 110 of about 33,568 (279)

Birefringence-induced phase delay enables Brillouin mechanical imaging in turbid media

Nature Communications
Acoustic vibrations of matter convey fundamental viscoelastic information that can be optically retrieved by hyperfine spectral analysis of the inelastic Brillouin scattered light. Increasing evidence of the central role of the viscoelastic properties in
Giuseppe Antonacci, Renzo Vanna, Marco Ventura, Maria Lucia Schiavone, Cristina Sobacchi, Morteza Behrouzitabar, Dario Polli, Cristian Manzoni, Giulio Cerullo   +8 more
doaj   +1 more source

Frequency comb Brillouin microscopy

, 2021
Brillouin light scattering (BLS), an almost a century-old technique, has evolved into a powerful and versatile method to study acoustic and magnetic phenomena down to the nanometer size scale. Presently, BLS can be applied in fields as diverse as acoustics, spintronics, geosciences, and biophysics. In addition, the advent of ultrafast laser sources has
openaire  

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

Advanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser, Ana M. Valencia, Sergei I. Ivlev, Marc Zeplichal, Andreas Terfort, Caterina Cocchi, Gregor Witte   +6 more
wiley   +1 more source

Inducing Ferromagnetism by Structural Engineering in a Strongly Spin‐Orbit Coupled Oxide

Advanced Functional Materials, EarlyView.
ABSTRACT Magnetic materials with strong spin‐orbit coupling (SOC) are essential for the advancement of spin‐orbitronic devices, as they enable efficient spin‐charge conversion, complex magnetic structures, spin‐valley physics, topological phases and other exotic phenomena.
Ji Soo Lim, Carmine Autieri, Merit Spring, Martin Kamp, Amar Fakhredine, Pavel Potapov, Daniel Wolf, Sergii Pylypenko, Axel Lubk, Johannes Schultz, Nicolas Perez, Börge Mehlhorn, Louis Veyrat, Mario Cuoco, Fadi Choueikan, Philippe Ohresser, Bernd Büchner, Giorgio Sangiovanni, Ralph Claessen, Michael Sing   +19 more
wiley   +1 more source

Optoacoustic lenses for lateral sub-optical resolution elasticity imaging

Photoacoustics
In this paper, we demonstrate for the first time the focusing of gigahertz coherent phonon pulses propagating in water using picosecond ultrasonics and Brillouin light scattering. We achieve this by using planar Fresnel zone plate and concave lenses with
Mengting Yao, Rafael Fuentes-Domínguez, Salvatore La Cavera, III, Fernando Pérez-Cota, Richard J. Smith, Matt Clark   +5 more
doaj   +1 more source

Strong influence of the complex bandstructure on the tunneling electroresistance: A combined model and ab-initio study

, 2010
The tunneling electroresistance (TER) for ferroelectric tunnel junctions (FTJs) with BaTiO_{3} (BTO) and PbTiO}_{3} (PTO) barriers is calculated by combining the microscopic electronic structure of the barrier material with a macroscopic model for the ...
I. Mertig, J. Henk, J. Henk, M. Fechner, N. F. Hinsche, P. Bose, P. Ghosez, P. Zahn, P. Zahn, R. Resta, S. Ostanin   +10 more
core   +1 more source

Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate

Advanced Materials, EarlyView.
High‐curvature carbon materials identified via machine learning and simulation can enhance the heat release and combustion performance of ammonium perchlorate. ABSTRACT The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and
Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang   +8 more
wiley   +1 more source

Uncertainty principle for experimental measurements: Fast versus slow probes

, 2015
The result of a physical measurement depends on the timescale of the experimental probe. In solid-state systems, this simple quantum mechanical principle has far-reaching consequences: the interplay of several degrees of freedom close to charge, spin or ...
Ayral, Thomas, Biermann, Silke, Hansmann, Philipp, Tejeda, Antonio   +3 more
core   +3 more sources

Strain Engineering of Magnetoresistance and Magnetic Anisotropy in CrSBr

Advanced Materials, EarlyView.
Biaxial compressive strain significantly enhances magnetoresistance and critical saturation fields in thin flakes of the 2D magnet CrSBr, along all three crystallographic axes. First‐principles calculations link these effects to strain‐induced increases in exchange interactions and magnetic anisotropy.
Eudomar Henríquez‐Guerra, Alberto M. Ruiz, Marta Galbiati, Álvaro Cortés‐Flores, Daniel Brown, Esteban Zamora‐Amo, Lisa Almonte, Andrei Shumilin, Juan Salvador‐Sánchez, Ana Pérez‐Rodríguez, Iñaki Orue, Andrés Cantarero, Andres Castellanos‐Gomez, Federico Mompeán, Mar Garcia‐Hernandez, Efrén Navarro‐Moratalla, Enrique Diez, Mario Amado, José J. Baldoví, M. Reyes Calvo   +19 more
wiley   +1 more source

Dual fiber probe with 3D-printed micro-lens for Brillouin microscopy

APL Photonics
Brillouin spectroscopy is a powerful technique for non-invasive micromechanical analysis of biological materials such as tissues and cells. Conventional bulk-optical Brillouin spectroscopy systems, however, face challenges in translation to endoscopic ...
Joshua Trapp, Hadi Mahmodi, Marco Wende, Luke McAlary, Lezanne Ooi, Jiawen Li, Robert A. McLaughlin, Alois Herkommer, Andrea Toulouse, Irina Kabakova   +9 more
doaj   +1 more source