Results 71 to 80 of about 63,374 (271)

Prediction of dynamic voltage stability status based on Hopf and limit induced bifurcations using extreme learning machine

International Journal of Electrical Power & Energy Systems, 2015
Abstract Evaluation of voltage stability status considering its dynamic boundaries is a key issue for saving global stability of power systems. However, this evaluation is a computationally demanding task and its implementation is very hard (if not impossible) for on-line environments such as dispatching centers of power systems. In this paper, a new
Mohammad Hossein Velayati, Nima Amjady, Issa Khajevandi   +2 more
openaire   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

Advanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia, Rogelio Ortigosa, Jesús Martínez‐Frutos, Daniel Garcia‐Gonzalez   +3 more
wiley   +1 more source

Sideband attraction via internal resonance in a multimode membrane as a mechanism for frequency combs

Physical Review Research
We explore self-induced parametric coupling between a driven (low frequency) and an undriven (high frequency) mode, also called internal resonances, in a membrane micromechanical system.
Mengqi Fu, Orjan Ameye, Fan Yang, Jan Košata, Javier del Pino, Oded Zilberberg, Elke Scheer   +6 more
doaj   +1 more source

A phenomenological approach to normal form modeling: a case study in laser induced nematodynamics

, 2005
An experimental setting for the polarimetric study of optically induced dynamical behavior in nematic liquid crystal films has allowed to identify most notably some behavior which was recognized as gluing bifurcations leading to chaos.
Azzam R. M. A., Benoît E., C. TONIOLO, C. TRESSER, Carbone V., Cipparrone G., Coullet P., Diener F., G. RUSSO, Gambaudo J. M., Gambaudo J. M., S. RESIDORI, Stokes G. G., Tresser C., Tresser C., Tresser C., Šil'nikov L. P., Šil'nikov L. P.   +17 more
core   +1 more source

Freeform Manufacturing of Plant‐Based Structural Colors for Scalable Photonic and Mechanochromic Devices

Advanced Materials, EarlyView.
A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song, Peiqi Niu, Wenxi Gu, Chun Lam Clement Chan, Jiuhong Yi, Xu Liu, Peng Tan, Chon In Haydn Cheong, Qingwen Guan, Dan Fang, Bingpu Zhou, Zi Liang Wu, Ji Liu, Yan Yan Shery Huang, Iek Man Lei   +14 more
wiley   +1 more source

Deployable 3D‐Printed Vascular Stent with Surface‐Catalysed Endogenous Nitric Oxide Generation

Advanced Materials, EarlyView.
A deployable 3D‐printed vascular stent was fabricated with surface‐catalyzed endogenous nitric oxide generation, representing a promising new direction for stent development. The stent can be remotely controlled by magnetic force in its compressed state and fully deployed at the target site using an untethered heat source, potentially eliminating the ...
Kun Zhou, Zifei Han, Kang Lin, Di Wu, Siti Nur Asyura Adzlan, Qingqing Fan, Christina Cortez‐Jugo, Rona Chandrawati, Cyrille Boyer   +8 more
wiley   +1 more source

Wave propagation in nonlinear metamaterial multi-atomic chains based on homotopy method

AIP Advances, 2016
This paper studies the dispersion properties and wave propagation in the tetratomic nonlinear acoustic metamaterial chain based on the homotopy analysis method (HAM). We perform a comparison between HAM and Perturbation approach, harmonic balance method (
Xin Fang, Jihong Wen, Jianfei Yin, Dianlong Yu   +3 more
doaj   +1 more source

Fabrication Technologies for Soft, Multimaterial Optical Fibers for In Vivo Diagnostics and Phototherapy, With a Focus on Extrusion Printing

Advanced Materials Technologies, EarlyView.
Soft multimaterial optical fibers integrate multiple functionalities—such as waveguiding, side emission, sensing, drug delivery or actuation—into a single filament for wearable, implantable, and tissue‐integrated devices for diagnostics and phototherapy.
Zahra Kafrashian, Jun Feng, Aránzazu del Campo   +2 more
wiley   +1 more source

Influence of through-flow on linear pattern formation properties in binary mixture convection

, 1996
We investigate how a horizontal plane Poiseuille shear flow changes linear convection properties in binary fluid layers heated from below. The full linear field equations are solved with a shooting method for realistic top and bottom boundary conditions.
A. Bers, A. C. Newell, A. E. Deane, A. La Porta, Ch. Jung, D. Bensimon, D. Gutkowicz-Krusin, D. Gutkowicz-Krusin, D. P. Chock, E. Kaplan, E. Knobloch, E. Knobloch, E. Moses, G. W. T. Lee, G. Zimmermann, G. Zimmermann, H. B. Squire, H. Gao, H. R. Brand, H. W. Müller, H. W. Müller, H. W. Müller, H. Yahata, H. Yahata, I. Progogine, J. K. Platten, J. K. Platten, J. K. Platten, K. Lerman, M. A. Dominguez-Lerma, M. Bestehorn, M. Bestehorn, M. C. Cross, M. C. Cross, M. C. Cross, M. C. Cross, M. Liu, M. Lücke, N. D. Stein, O. Lhost, O. Lhost, P. Büchel, P. Glandsdorff, P. Huerre, P. Huerre, P. Kolodner, P. Kolodner, P. Le Gal, R. J. Briggs, R. J. Deissler, R. P. Behringer, S. Chandrasekhar, S. J. Linz, St. Hollinger, T. Clune, V. Croquette, V. Croquette, V. Steinberg, W. Barten, W. Barten, W. Hort, W. Schöpf, W. Schöpf   +62 more
core   +1 more source

Preservation of Extracellular Vesicle Integrity and Cargo Using Spiral Microfluidic Chip‐Based Separation

Advanced Materials Technologies, EarlyView.
A spiral microfluidic chip is compared with ultrafiltration for the separation of extracellular vesicles (EVs). The method preserves miRNA cargo and membrane integrity more effectively, resulting in intact vesicle morphology and consistent surface biomarker expression.
Huiseop Lee, Sehyeon Kim, Dasom Kong, Hye‐min Park, Hyun‐Ji Park, Jinsik Kim   +5 more
wiley   +1 more source