Results 61 to 70 of about 3,113 (205)
Advanced Science, EarlyView.Defect‐configurational origins of the asymmetric apparent electrostrain are revealed in different piezoelectric ceramics via atomic‐scale visualization of defect configurations. Migration of oxygen vacancies leads to the electrobending effect in N2‐sintered BaTiO3, while defect dipoles in Ba0.99TiO2.99 generate true asymmetric electrostrain without ...
Jie Wang +7 more
wiley +1 more source
Removing Orbital Debris with Lasers
, 2011 Orbital debris in low Earth orbit (LEO) are now sufficiently dense that the use of LEO space is threatened by runaway collisional cascading. A problem predicted more than thirty years ago, the threat from debris larger than about 1 cm demands serious ...
Alexander Rubenchik +41 more
core +1 more source
Advanced Science, EarlyView.Ferroelectric Rashba semiconductors promise ultralow‐power devices but lack industry‐quality films. This work demonstrates CMOS‐compatible fabrication of high‐quality α‐GeTe(111) films via magnetron sputtering, enabled by a 5 nm Sb2Te3 seed layer. Structural and ferroelectric analyses show robust, switchable polarization comparable to MBE films, paving
Jules Lagrave +14 more
wiley +1 more source
Adaptive optics in high-contrast imaging
, 2016 The development of adaptive optics (AO) played a major role in modern astronomy over the last three decades. By compensating for the atmospheric turbulence, these systems enable to reach the diffraction limit on large telescopes.
A. Amara +42 more
core +2 more sources
Evolution of Physical Intelligence Across Scales
Advanced Intelligent Discovery, EarlyView.By following the evolution of physical intelligence across scales, this article shows how intelligence arises from materials, structures, physical interactions, and collectives. It establishes physical intelligence as the evolutionary foundation upon which embodied intelligence is built.
Ke Liu +7 more
wiley +1 more source
Solderjet Bumping as a Versatile Tool for the Integration of Piezoelectric Deformable Mirrors
Physics Procedia, 2016 AbstractA deformable mirror (DM) is a device that aims to compensate laser-induced mirror deformation and thermal lensing in the optical system. The mounting of membrane based DM with screen-printed actuators is crucial, as stress may deform the membrane and change their characteristics (shape, piezoelectric deflection, natural frequency).
Burkhardt, Thomas +4 more
openaire +1 more source
The Fourier-Kelvin Stellar Interferometer a Low Complexity, Low Cost Space Mission for High-Resolution Astronomy and Direct Exoplanet Detection [PDF]
, 2006 The Fourier-Kelvin Stellar Interferometer (FKSI) is a mission concept for a spacecraft-borne nulling interferometer for high-resolution astronomy and the direct detection of exoplanets and assay of their environments and atmospheres.
+18 more
core +2 more sources
Membrane Mirrors With Bimorph Shape Actuators [PDF]
Deformable mirrors of a proposed type would be equipped with relatively-large-stroke microscopic piezoelectric actuators that would be used to maintain their reflective surfaces in precise shapes.
Yang, Eui-Hyeok
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The structure, properties, preparation methods, and characterization techniques of BP. As a typical 2D layered material, black phosphorus (BP) demonstrates exceptional promise in various fields, particularly in energy storage for alkali metal‐ion batteries. However, its distinctive structure and properties, together with the compositional complexity of
Yunqing Wang +7 more
wiley +1 more source
Design and Optimization of Piezoelectric Dual-Mode Micro-Mirror [PDF]
, 2010 The final publication is available at www.springerlink.comMEMS micro-mirrors have been widely used in optical communication, projection display, and microscanner, etc. Various MEMS micro-mirror devices have been reported.
Hu, Junling +4 more
core +1 more source