Results 71 to 80 of about 63,993 (274)

Plasma‐Polymerized Nanoparticles Presenting Fibrillin‐1 Drive Rapid Re‐Endothelialization of Vascular Grafts

Advanced Healthcare Materials, EarlyView.
Commercial vascular grafts are made from ePTFE, a highly hydrophobic, foreign material that fails at a high rate in small‐diameter applications. Plasma polymer nanoparticles (PPN) are a versatile material functionalisation tool, used here to present fibrillin‐1 fragment PF8 on the graft surface.
Bob S. L. Lee, Yuen Ting Lam, Alex H. P. Chan, Praveesuda L. Michael, Timothy C. Mitchell, Jui Chien Hung, Miguel Santos, Khoon S. Lim, Richard P. Tan, Steven G. Wise   +9 more
wiley   +1 more source

Chaos in driven Alfvén systems: unstable periodic orbits and chaotic saddles [PDF]

Nonlinear Processes in Geophysics, 2007
The chaotic dynamics of Alfvén waves in space plasmas governed by the derivative nonlinear Schrödinger equation, in the low-dimensional limit described by stationary spatial solutions, is studied.
A. C.-L. Chian, W. M. Santana, E. L. Rempel, F. A. Borotto, T. Hada, Y. Kamide   +5 more
doaj  

Enhanced entrainability of genetic oscillators by period mismatch

, 2013
Biological oscillators coordinate individual cellular components so that they function coherently and collectively. They are typically composed of multiple feedback loops, and period mismatch is unavoidable in biological implementations.
Hafner M, Izhikevich EM, Kuramoto Y, Masanori Arita, Patnaik PR, Trané C, Yoshihiko Hasegawa   +6 more
core   +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

Coexistence of single-mode and multi-longitudinal mode emission in the ring laser model

, 2005
A homogeneously broadened unidirectonal ring laser can emit in several longitudinal modes for large enough pump and cavity length because of Rabi splitting induced gain. This is the so called Risken-Nummedal-Graham-Haken (RNGH) instability.
Carr, Casini, de Valcárcel, E. Roldán, F. Prati, Fontana, Fu, Graham, Haken, Haken, Ikeda, J.L. Font, Khanin, Lugiato, Mayr, Narducci, Ohno, Pessina, R. Vilaseca, Risken, Risken, Roldán, Sparrow, Voigt, Weiss, Zorell   +25 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

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

Nonequilibrium Period with Emergence of Marangoni Circulations in Meniscus Splitting

Advanced Materials Interfaces, EarlyView.
The emergence and evolution of Marangoni convection in the meniscus splitting phenomenon are investigated. During the mass circulation of viscous fluids, the confluence and bifurcation of polymer dispersions beneath the evaporative interface lead to the inhomogeneous densification of the skin layer.
Leijie Wu, Kosuke Okeyoshi
wiley   +1 more source

Time-delayed feedback control of unstable periodic orbits near a subcritical Hopf bifurcation

, 2010
We show that Pyragas delayed feedback control can stabilize an unstable periodic orbit (UPO) that arises from a generic subcritical Hopf bifurcation of a stable equilibrium in an n-dimensional dynamical system. This extends results of Fiedler et al. [PRL
Bar-Eli, C.M. Postlethwaite, Campbell, Campbell, Campbell, Crawford, Dombovari, Dombovari, El’sgol’ts, Faria, Fiedler, Fiedler, Field, G. Brown, Golubitsky, Golubitsky, Guckenheimer, Guckenheimer, Hale, Hale, Hassard, Just, Kalmar-Nagy, M. Silber, Montgomery, Nakajima, Nayfeh, Orosz, Orosz, Ott, Postlethwaite, Postlethwaite, Postlethwaite, Pyragas, Pyragas, Pyragas, Pyragas, Pyragas, Pyragas, Qesmi, Sieber, Sparrow, Stone, Strogatz, Stépán, von Loewenich, Wiggins   +46 more
core   +1 more source