Results 71 to 80 of about 3,100 (213)

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

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.
, , , A. J. Martino, B. J. Frey, J. D. Monnier, J. Rajagopal, K. A. Lee, L. D. Deming, L. J. Richardson, M. J. Kuchner, M. Zuray, R. J. Allen, R. K. Barry, R. Millan-Gabete, S. Seager, T. T. Hyde, W. A. Traub, W. C. Danchi   +18 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, Tianyun Huang, Aming Li, Pengyu Lv, Tingting Qin, Wenhui Chen, Hui Wei, Huiling Duan   +7 more
wiley   +1 more source

Optically Driven Deformable Mirrors [PDF]

Optically driven deformable mirrors may eventually supplant electrically driven deformable mirrors in some adaptive-optics and active-optics applications. Traditionally, the mirror facets in electrically driven deformable mirrors are actuated, variously,
Hemmati, Hamid
core   +1 more source

Proactive Robotic Grasp Stability via Tactile Safety Margin Feedback

Advanced Intelligent Systems, EarlyView.
We introduce the tactile safety margin (TSM), defined as the ratio between applied friction force (Ffric) and maximum friction (Fmax) derived from grip force. A bilayer E‐skin with decoupled temperature, strain, and pressure sensing enables real‐time grasp stability monitoring through measured TSM values, allowing robots to proactively adjust grip ...
Yebin Park, Jaehyun Kim, Taeyeong Kim, Woosung Cho, Junchen Luo, Myeongryun Seong, Chaeyong Park, Anna Lee, Seungmoon Choi, Insang You, Unyong Jeong   +10 more
wiley   +1 more source

Optoelectronic cooling of mechanical modes in a semiconductor nanomembrane

, 2010
Optical cavity cooling of mechanical resonators has recently become a research frontier. The cooling has been realized with a metal-coated silicon microlever via photo-thermal force and subsequently with dielectric objects via radiation pressure. Here we
Bagci, T., Liu, J., Lodahl, P., Naesby, A., Nielsen, B. Melholt, Polzik, E. S., Stobbe, S., Usami, K.   +7 more
core   +1 more source

A Review of Black Phosphorus‐Based Materials: From Preparation Strategies to Characterization Techniques

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, Jinzhi Lyu, Yongxiang Li, Yubing Wang, Xiangming Cui, Jianan Wang, Banglong Wan, Wei Yan   +7 more
wiley   +1 more source

Coherence‐Gated Mirau Interferometry for Single‐Shot Quantitative Phase Imaging and Motion Sensing

Laser &Photonics Reviews, EarlyView.
This paper presents a compact add‐on module converting a Mirau or other on‐axis interferometer into a single‐shot quantitative phase imaging system using coherence gating and precise optical path matching. Demonstrations include time‐resolved imaging of human cells and streaming red blood cells, visualization of evaporation dynamics in liquid mixtures,
Petr Bouchal, Martin Konečný, Zdeněk Nováček, Radim Chmelík, Zdeněk Bouchal   +4 more
wiley   +1 more source

A piezoelectric deformable X-ray mirror for phase compensation based on global optimization

Journal of Synchrotron Radiation, 2019
As a strong tool for the study of nanoscience, the synchrotron hard X-ray nanoprobe technique enables researchers to investigate complex samples with many advantages, such as in situ setup, high sensitivity and the integration of various experimental methods.
Hui Jiang, Naxi Tian, Dongxu Liang, Guohao Du, Shuai Yan   +4 more
openaire   +2 more sources

Giant Phonon‐Enhanced Terahertz Electro‐Optic Response in Ferroelectric van der Waals NbOX2 (X = Br, I)

Laser &Photonics Reviews, EarlyView.
Van der Waals ferroelectric NbOX2 thin films exhibit phonon‐resonance enhanced electro‐optic responses, 332 pm/V at 3.1 THz (NbOI2) and 192 pm/V at 3.7 THz (NbOBr2), the highest among vdW materials, and show 4% non‐resonant SHG modulation together with resonant phonon‐enhancement under a 150 kV/cm THz pump.
Baolong Zhang, Ruihuan Duan, Zheng Liu, Ranjan Singh   +3 more
wiley   +1 more source