Results 151 to 160 of about 34,058 (316)
Photonic crystal waveguides in chalcogenide glasses
, 2011 The growing speed and bandwidth requirements of telecommunication systems demand all-optical on-chip solutions. Microphotonic devices can deliver low power nonlinear signal processing solutions. This thesis looks at the slow light photonic crystals in
Spurny, Marcel
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Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots
Advanced Robotics Research, EarlyView.Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley +1 more source
Tunable liquid crystal-loaded metasurfaces for IR and THz applications
We experimentally demonstrate a family of compact and efficient IR and THz electro-optical modulators based on active planar metamaterials (metasurfaces) hybridised with liquid ...
Fedotov, V.A. +6 more
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Waveguided optical reflectors using liquid crystals and composites
, 2012 We review several approaches to filter optical signals confined in waveguides by using either electro-optical or nonlinear optical effects in liquid crystals (LC) and ...
ASQUINI, Rita +2 more
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Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract
Advanced Robotics Research, EarlyView.We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis +7 more
wiley +1 more source
Doped Lithium Niobate Crystals for all-optical wavelength conversion
, 2011 Lithium niobate (LN) is an extremely interesting material for the realization of all-optical devices. At the state of the art, the use of LN crystals for nonlinear optical functions is limited, despite the very large d33 nonlinear coefficient exhibited ...
CRISTIANI, ILARIA +7 more
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Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source
Second order nonlinear processes in photonic crystals
, 2005 We show that the second order parametric nonlinear interaction from waves that are counter propagating may be perfectly phase matched in the framework of a photonic crystal.
Molinos-Gómez, Albert +7 more
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Numerical Modeling of Photothermal Self‐Excited Composite Oscillators
Advanced Robotics Research, EarlyView.We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu +6 more
wiley +1 more source
Phase matching analysis of noncollinear optical parametric process in nonlinear anisotropic crystals
, 2001 Phase matching for noncollinear optical parametric generation is investigated. All the possible phase matching configurations and existence conditions for general noncollinear three-wave mixing interactions are derived for propagation within the ...
Chen, GF +5 more
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