Results 71 to 80 of about 409,083 (217)

The effect of dynamical compressive and shear strain on magnetic anisotropy in a low symmetry ferromagnetic film [PDF]

, 2017
Dynamical strain generated upon excitation of a metallic film by a femtosecond laser pulse may become a versatile tool enabling control of magnetic state of thin _lms and nanostructures via inverse magnetostriction on a picosecond time scale.
A M Kalashnikova, A S Salasyuk, A V Akimov, A V Scherbakov, A W Rushforth, Atulasimha J, Bowe S, D R Yakovlev, Gurevich A G, J Jäger, Landau L D, Lide D R, M Bayer, Shelukhin L A, T L Linnik, V N Kats   +15 more
core   +3 more sources

Formation of Laser‐Induced Periodic Surface Structures on Titanium Alloy Using a Picosecond Laser: Dependence on Fluence and Number of Laser Pulses

Advanced Materials Interfaces, EarlyView.
Laser treatment of materials is a versatile technique for generating ordered surface structures. Nevertheless, such structures are the result of laser parameters such as laser pulse fluence. We demonstrate that homogeneous low special frequency laser‐induced periodic surface structures are contingent on both single and effective fluence dose and can be
Iana Fomicheva, Petr Druzhinin, Hans Amler, Alexander B. Tesler, George Sarau, Gerd Leuchs, Silke H. Christiansen   +6 more
wiley   +1 more source

Phonon engineering with superlattices: generalized nanomechanical potentials [PDF]

, 2019
Earlier implementations to simulate coherent wave propagation in one-dimensional potentials using acoustic phonons with gigahertz-terahertz frequencies were based on coupled nanoacoustic resonators.
Esmann, M., Lanzillotti-Kimura, N. D., Ortiz, O.   +2 more
core   +2 more sources

Elastic stiffness of metallic multilayers studied by picosecond ultrasonics: improved interpretation of interface elasticity

Japanese Journal of Applied Physics, 2019
In metallic multilayers, elastic stiffness is often reported to decrease with an increasing number of interfaces. This phenomenon is generally attributed to softening at interfaces, and a decrease of 50% or more in interface stiffness is expected.
N. Nakamura, Ryo Yokomura, N. Takeuchi, Daiki Yamakado, H. Ogi   +4 more
semanticscholar   +1 more source

Resistive Heating for Inducing Localized Crystal Growth in Organic Thin Film Devices

Advanced Materials Technologies, EarlyView.
Rubrene thin films are promising for organic optoelectronics due to high hole mobility. However, uncontrolled crystallization and grain boundaries from standard thermal processing hinder lateral device scalability. This work presents femtosecond‐laser micromachining and patterned resistive heating to induce localized, deterministic crystallization ...
Anna‐Lena Hofmann, Roozbeh Irandoost, Moritz Nützel, Tobias Antrack, Wooik Jang, Markas Sudzius, Hrisheekesh Thachoth Chandran, Gang Li, Johannes Benduhn, Karl Leo   +9 more
wiley   +1 more source

In situ imaging of the dynamics of photo-induced structural phase transition at high pressures by picosecond acoustic interferometry

New Journal of Physics, 2017
Picosecond acoustic interferometry is used to monitor in time the motion of the phase transition boundary between two water ice phases, VII and VI, coexisting at a pressure of 2.15 GPa when compressed in a diamond anvil cell at room temperature.
Maju Kuriakose, Nikolay Chigarev, Samuel Raetz, Alain Bulou, Vincent Tournat, Andreas Zerr, Vitalyi E Gusev   +6 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Effect of picosecond strain pulses on thin layers of the ferromagnetic semiconductor (Ga,Mn)(As,P)

, 2010
The effect of picosecond acoustic strain pulses (ps-ASP) on a thin layer of (Ga,Mn)As co-doped with phosphorus was probed using magneto-optical Kerr effect (MOKE).
A. Lemaître, B. Perrin, B. Perrin, C. Gourdon, C. Testelin, E. Charron, E. Peronne, L. Thevenard, M. Cubukcu, S. Vincent   +9 more
core   +2 more sources

Enhanced Self‐Phase Modulation in Silicon Nitride Waveguides Integrated With 2D MoS2 Films

Advanced Materials Technologies, EarlyView.
ABSTRACT On‐chip integration of 2D materials provides a promising route toward next‐generation integrated optical devices with performance beyond existing limits. Here, significantly enhanced spectral broadening induced by self‐phase modulation (SPM) is experimentally demonstrated in silicon nitride (Si3N4) waveguides integrated with 2D monolayer ...
Shahaz S. Hameed, Di Jin, Aihao Zhao, Jiayang Wu, Junkai Hu, Irfan H. Abidi, Sebastien Cueff, Christian Grillet, Yuning Zhang, Houssein El Dirani, Corrado Sciancalepore, Sebastien Kerdiles, Quentin Wilmart, Sumeet Walia, Christelle Monat, David J. Moss   +15 more
wiley   +1 more source

High resolution 3D imaging of living cells with sub-optical wavelength phonons [PDF]

, 2016
Label-free imaging of living cells below the optical diffraction limit poses great challenges for optical microscopy. Biologically relevant structural information remains below the Rayleigh limit and beyond the reach of conventional microscopes.
A Danielli, AA Maznev, AR Kherlopian, BA Atef Gadalla, C Rossignol, C Sparrow, C Thomsen, C Thomsen, C Zhang, E Weiss, EM Strohm, EM Strohm, F Lanni, F Palombo, F Pérez-Cota, F Zernike, G Rothmund, G Scarcelli, G Scarcelli, H Kwok, HX You, JW Lichtman, K König, LS De Clerck, MJ Rust, MS Muha, O Matsuda, PA Elzinga, RJ Smith, RJ Smith, S Danworaphong, S Nawaz, T Dehoux, T Kundu, U Müller, UV Nägerl, W Chen, W Choi   +37 more
core   +1 more source